ID RAB8A_HUMAN Reviewed; 207 AA. AC P61006; B4DEK7; P24407; Q6FHV5; DT 26-APR-2004, integrated into UniProtKB/Swiss-Prot. DT 26-APR-2004, sequence version 1. DT 02-JUN-2021, entry version 183. DE RecName: Full=Ras-related protein Rab-8A; DE AltName: Full=Oncogene c-mel; DE Flags: Precursor; GN Name=RAB8A; Synonyms=MEL, RAB8; OS Homo sapiens (Human). OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; OC Homo. OX NCBI_TaxID=9606; RN [1] RP NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). RX PubMed=8294494; DOI=10.1083/jcb.124.1.101; RA Zahraoui A., Joberty G., Arpin M., Fontaine J.J., Hellio R., Tavitian A., RA Louvard D.; RT "A small rab GTPase is distributed in cytoplasmic vesicles in non polarized RT cells but colocalizes with the tight junction marker ZO-1 in polarized RT epithelial cells."; RL J. Cell Biol. 124:101-115(1994). RN [2] RP NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). RX PubMed=1886711; RA Nimmo E.R., Sanders P.G., Padua R.A., Hughes D., Williamson R., RA Johnson K.J.; RT "The MEL gene: a new member of the RAB/YPT class of RAS-related genes."; RL Oncogene 6:1347-1351(1991). RN [3] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). RC TISSUE=Brain; RA Puhl H.L. III, Ikeda S.R., Aronstam R.S.; RT "cDNA clones of human proteins involved in signal transduction sequenced by RT the Guthrie cDNA resource center (www.cdna.org)."; RL Submitted (APR-2002) to the EMBL/GenBank/DDBJ databases. RN [4] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). RA Kalnine N., Chen X., Rolfs A., Halleck A., Hines L., Eisenstein S., RA Koundinya M., Raphael J., Moreira D., Kelley T., LaBaer J., Lin Y., RA Phelan M., Farmer A.; RT "Cloning of human full-length CDSs in BD Creator(TM) system donor vector."; RL Submitted (MAY-2003) to the EMBL/GenBank/DDBJ databases. RN [5] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2). RC TISSUE=Cerebellum; RX PubMed=14702039; DOI=10.1038/ng1285; RA Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., RA Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., RA Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S., RA Yamamoto J., Saito K., Kawai Y., Isono Y., Nakamura Y., Nagahari K., RA Murakami K., Yasuda T., Iwayanagi T., Wagatsuma M., Shiratori A., Sudo H., RA Hosoiri T., Kaku Y., Kodaira H., Kondo H., Sugawara M., Takahashi M., RA Kanda K., Yokoi T., Furuya T., Kikkawa E., Omura Y., Abe K., Kamihara K., RA Katsuta N., Sato K., Tanikawa M., Yamazaki M., Ninomiya K., Ishibashi T., RA Yamashita H., Murakawa K., Fujimori K., Tanai H., Kimata M., Watanabe M., RA Hiraoka S., Chiba Y., Ishida S., Ono Y., Takiguchi S., Watanabe S., RA Yosida M., Hotuta T., Kusano J., Kanehori K., Takahashi-Fujii A., Hara H., RA Tanase T.-O., Nomura Y., Togiya S., Komai F., Hara R., Takeuchi K., RA Arita M., Imose N., Musashino K., Yuuki H., Oshima A., Sasaki N., RA Aotsuka S., Yoshikawa Y., Matsunawa H., Ichihara T., Shiohata N., Sano S., RA Moriya S., Momiyama H., Satoh N., Takami S., Terashima Y., Suzuki O., RA Nakagawa S., Senoh A., Mizoguchi H., Goto Y., Shimizu F., Wakebe H., RA Hishigaki H., Watanabe T., Sugiyama A., Takemoto M., Kawakami B., RA Yamazaki M., Watanabe K., Kumagai A., Itakura S., Fukuzumi Y., Fujimori Y., RA Komiyama M., Tashiro H., Tanigami A., Fujiwara T., Ono T., Yamada K., RA Fujii Y., Ozaki K., Hirao M., Ohmori Y., Kawabata A., Hikiji T., RA Kobatake N., Inagaki H., Ikema Y., Okamoto S., Okitani R., Kawakami T., RA Noguchi S., Itoh T., Shigeta K., Senba T., Matsumura K., Nakajima Y., RA Mizuno T., Morinaga M., Sasaki M., Togashi T., Oyama M., Hata H., RA Watanabe M., Komatsu T., Mizushima-Sugano J., Satoh T., Shirai Y., RA Takahashi Y., Nakagawa K., Okumura K., Nagase T., Nomura N., Kikuchi H., RA Masuho Y., Yamashita R., Nakai K., Yada T., Nakamura Y., Ohara O., RA Isogai T., Sugano S.; RT "Complete sequencing and characterization of 21,243 full-length human RT cDNAs."; RL Nat. Genet. 36:40-45(2004). RN [6] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). RA Ebert L., Schick M., Neubert P., Schatten R., Henze S., Korn B.; RT "Cloning of human full open reading frames in Gateway(TM) system entry RT vector (pDONR201)."; RL Submitted (JUN-2004) to the EMBL/GenBank/DDBJ databases. RN [7] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RX PubMed=15057824; DOI=10.1038/nature02399; RA Grimwood J., Gordon L.A., Olsen A.S., Terry A., Schmutz J., Lamerdin J.E., RA Hellsten U., Goodstein D., Couronne O., Tran-Gyamfi M., Aerts A., RA Altherr M., Ashworth L., Bajorek E., Black S., Branscomb E., Caenepeel S., RA Carrano A.V., Caoile C., Chan Y.M., Christensen M., Cleland C.A., RA Copeland A., Dalin E., Dehal P., Denys M., Detter J.C., Escobar J., RA Flowers D., Fotopulos D., Garcia C., Georgescu A.M., Glavina T., Gomez M., RA Gonzales E., Groza M., Hammon N., Hawkins T., Haydu L., Ho I., Huang W., RA Israni S., Jett J., Kadner K., Kimball H., Kobayashi A., Larionov V., RA Leem S.-H., Lopez F., Lou Y., Lowry S., Malfatti S., Martinez D., RA McCready P.M., Medina C., Morgan J., Nelson K., Nolan M., Ovcharenko I., RA Pitluck S., Pollard M., Popkie A.P., Predki P., Quan G., Ramirez L., RA Rash S., Retterer J., Rodriguez A., Rogers S., Salamov A., Salazar A., RA She X., Smith D., Slezak T., Solovyev V., Thayer N., Tice H., Tsai M., RA Ustaszewska A., Vo N., Wagner M., Wheeler J., Wu K., Xie G., Yang J., RA Dubchak I., Furey T.S., DeJong P., Dickson M., Gordon D., Eichler E.E., RA Pennacchio L.A., Richardson P., Stubbs L., Rokhsar D.S., Myers R.M., RA Rubin E.M., Lucas S.M.; RT "The DNA sequence and biology of human chromosome 19."; RL Nature 428:529-535(2004). RN [8] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RA Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., RA Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., RA Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., RA Turner R., Yooseph S., Lu F., Nusskern D.R., Shue B.C., Zheng X.H., RA Zhong F., Delcher A.L., Huson D.H., Kravitz S.A., Mouchard L., Reinert K., RA Remington K.A., Clark A.G., Waterman M.S., Eichler E.E., Adams M.D., RA Hunkapiller M.W., Myers E.W., Venter J.C.; RL Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases. RN [9] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). RC TISSUE=Skin; RX PubMed=15489334; DOI=10.1101/gr.2596504; RG The MGC Project Team; RT "The status, quality, and expansion of the NIH full-length cDNA project: RT the Mammalian Gene Collection (MGC)."; RL Genome Res. 14:2121-2127(2004). RN [10] RP ISOPRENYLATION AT CYS-204. RX PubMed=8375503; DOI=10.1016/0014-5793(93)80897-4; RA Joberty G., Tavitian A., Zahraoui A.; RT "Isoprenylation of Rab proteins possessing a C-terminal CaaX motif."; RL FEBS Lett. 330:323-328(1993). RN [11] RP INTERACTION WITH RAB3IP, AND SUBCELLULAR LOCATION. RC TISSUE=Brain; RX PubMed=12221131; DOI=10.1091/mbc.e02-03-0143; RA Hattula K., Furuhjelm J., Arffman A., Peranen J.; RT "A Rab8-specific GDP/GTP exchange factor is involved in actin remodeling RT and polarized membrane transport."; RL Mol. Biol. Cell 13:3268-3280(2002). RN [12] RP SUBCELLULAR LOCATION, AND INTERACTION WITH OPTN. RX PubMed=15837803; DOI=10.1083/jcb.200501162; RA Sahlender D.A., Roberts R.C., Arden S.D., Spudich G., Taylor M.J., RA Luzio J.P., Kendrick-Jones J., Buss F.; RT "Optineurin links myosin VI to the Golgi complex and is involved in Golgi RT organization and exocytosis."; RL J. Cell Biol. 169:285-295(2005). RN [13] RP PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-185, AND IDENTIFICATION BY RP MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RC TISSUE=Cervix carcinoma; RX PubMed=17081983; DOI=10.1016/j.cell.2006.09.026; RA Olsen J.V., Blagoev B., Gnad F., Macek B., Kumar C., Mortensen P., Mann M.; RT "Global, in vivo, and site-specific phosphorylation dynamics in signaling RT networks."; RL Cell 127:635-648(2006). RN [14] RP INTERACTION WITH BIRC6/BRUCE. RX PubMed=18329369; DOI=10.1016/j.cell.2008.01.012; RA Pohl C., Jentsch S.; RT "Final stages of cytokinesis and midbody ring formation are controlled by RT BRUCE."; RL Cell 132:832-845(2008). RN [15] RP IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RC TISSUE=Cervix carcinoma; RX PubMed=18669648; DOI=10.1073/pnas.0805139105; RA Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E., RA Elledge S.J., Gygi S.P.; RT "A quantitative atlas of mitotic phosphorylation."; RL Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008). RN [16] RP IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RX PubMed=19413330; DOI=10.1021/ac9004309; RA Gauci S., Helbig A.O., Slijper M., Krijgsveld J., Heck A.J., Mohammed S.; RT "Lys-N and trypsin cover complementary parts of the phosphoproteome in a RT refined SCX-based approach."; RL Anal. Chem. 81:4493-4501(2009). RN [17] RP INTERACTION WITH PIFO. RX PubMed=20643351; DOI=10.1016/j.devcel.2010.06.005; RA Kinzel D., Boldt K., Davis E.E., Burtscher I., Trumbach D., Diplas B., RA Attie-Bitach T., Wurst W., Katsanis N., Ueffing M., Lickert H.; RT "Pitchfork regulates primary cilia disassembly and left-right asymmetry."; RL Dev. Cell 19:66-77(2010). RN [18] RP FUNCTION, AND SUBCELLULAR LOCATION. RX PubMed=20890297; DOI=10.1038/ncb2106; RA Bryant D.M., Datta A., Rodriguez-Fraticelli A.E., Peraenen J., RA Martin-Belmonte F., Mostov K.E.; RT "A molecular network for de novo generation of the apical surface and RT lumen."; RL Nat. Cell Biol. 12:1035-1045(2010). RN [19] RP SUBCELLULAR LOCATION, INTERACTION WITH EHD1 AND MICALL1, AND MUTAGENESIS OF RP THR-22 AND GLN-67. RX PubMed=19864458; DOI=10.1091/mbc.e09-06-0535; RA Sharma M., Giridharan S.S., Rahajeng J., Naslavsky N., Caplan S.; RT "MICAL-L1 links EHD1 to tubular recycling endosomes and regulates receptor RT recycling."; RL Mol. Biol. Cell 20:5181-5194(2009). RN [20] RP PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-181 AND SER-185, AND RP IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RC TISSUE=Cervix carcinoma; RX PubMed=20068231; DOI=10.1126/scisignal.2000475; RA Olsen J.V., Vermeulen M., Santamaria A., Kumar C., Miller M.L., RA Jensen L.J., Gnad F., Cox J., Jensen T.S., Nigg E.A., Brunak S., Mann M.; RT "Quantitative phosphoproteomics reveals widespread full phosphorylation RT site occupancy during mitosis."; RL Sci. Signal. 3:RA3-RA3(2010). RN [21] RP IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RX PubMed=21269460; DOI=10.1186/1752-0509-5-17; RA Burkard T.R., Planyavsky M., Kaupe I., Breitwieser F.P., Buerckstuemmer T., RA Bennett K.L., Superti-Furga G., Colinge J.; RT "Initial characterization of the human central proteome."; RL BMC Syst. Biol. 5:17-17(2011). RN [22] RP INTERACTION WITH DCDC1, AND SUBCELLULAR LOCATION. RX PubMed=22159412; DOI=10.1242/jcs.085407; RA Kaplan A., Reiner O.; RT "Linking cytoplasmic dynein and transport of Rab8 vesicles to the midbody RT during cytokinesis by the doublecortin domain-containing 5 protein."; RL J. Cell Sci. 124:3989-4000(2011). RN [23] RP FUNCTION, AND INTERACTION WITH MYO5B. RX PubMed=21282656; DOI=10.1073/pnas.1010754108; RA Roland J.T., Bryant D.M., Datta A., Itzen A., Mostov K.E., Goldenring J.R.; RT "Rab GTPase-Myo5B complexes control membrane recycling and epithelial RT polarization."; RL Proc. Natl. Acad. Sci. U.S.A. 108:2789-2794(2011). RN [24] RP PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-185, AND IDENTIFICATION BY RP MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RX PubMed=21406692; DOI=10.1126/scisignal.2001570; RA Rigbolt K.T., Prokhorova T.A., Akimov V., Henningsen J., Johansen P.T., RA Kratchmarova I., Kassem M., Mann M., Olsen J.V., Blagoev B.; RT "System-wide temporal characterization of the proteome and phosphoproteome RT of human embryonic stem cell differentiation."; RL Sci. Signal. 4:RS3-RS3(2011). RN [25] RP SUBCELLULAR LOCATION. RX PubMed=21255211; DOI=10.1111/j.1600-0854.2011.01165.x; RA Seto S., Tsujimura K., Koide Y.; RT "Rab GTPases regulating phagosome maturation are differentially recruited RT to mycobacterial phagosomes."; RL Traffic 12:407-420(2011). RN [26] RP FUNCTION IN CILIOGENESIS, AND SUBCELLULAR LOCATION. RX PubMed=21844891; DOI=10.1038/cr.2011.134; RA Chen Y., Wu B., Xu L., Li H., Xia J., Yin W., Li Z., Shi D., Li S., Lin S., RA Shu X., Pei D.; RT "A SNX10/V-ATPase pathway regulates ciliogenesis in vitro and in vivo."; RL Cell Res. 22:333-345(2012). RN [27] RP INTERACTION WITH OCRL. RX PubMed=22543976; DOI=10.1093/hmg/dds163; RA Luo N., West C.C., Murga-Zamalloa C.A., Sun L., Anderson R.M., Wells C.D., RA Weinreb R.N., Travers J.B., Khanna H., Sun Y.; RT "OCRL localizes to the primary cilium: a new role for cilia in Lowe RT syndrome."; RL Hum. Mol. Genet. 21:3333-3344(2012). RN [28] RP PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-185, AND IDENTIFICATION BY RP MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RC TISSUE=Cervix carcinoma, and Erythroleukemia; RX PubMed=23186163; DOI=10.1021/pr300630k; RA Zhou H., Di Palma S., Preisinger C., Peng M., Polat A.N., Heck A.J., RA Mohammed S.; RT "Toward a comprehensive characterization of a human cancer cell RT phosphoproteome."; RL J. Proteome Res. 12:260-271(2013). RN [29] RP PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-185, AND IDENTIFICATION BY RP MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RC TISSUE=Liver; RX PubMed=24275569; DOI=10.1016/j.jprot.2013.11.014; RA Bian Y., Song C., Cheng K., Dong M., Wang F., Huang J., Sun D., Wang L., RA Ye M., Zou H.; RT "An enzyme assisted RP-RPLC approach for in-depth analysis of human liver RT phosphoproteome."; RL J. Proteomics 96:253-262(2014). RN [30] RP IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RX PubMed=25944712; DOI=10.1002/pmic.201400617; RA Vaca Jacome A.S., Rabilloud T., Schaeffer-Reiss C., Rompais M., Ayoub D., RA Lane L., Bairoch A., Van Dorsselaer A., Carapito C.; RT "N-terminome analysis of the human mitochondrial proteome."; RL Proteomics 15:2519-2524(2015). RN [31] RP INTERACTION WITH LRRK2; GDI1; GDI2; CHM; CHML; RABGGTA; RABGGTB; RAB3IP; RP TBC1D15 AND INPP5B, SUBCELLULAR LOCATION, PHOSPHORYLATION AT THR-72, AND RP MUTAGENESIS OF THR-72. RX PubMed=26824392; DOI=10.7554/elife.12813; RA Steger M., Tonelli F., Ito G., Davies P., Trost M., Vetter M., Wachter S., RA Lorentzen E., Duddy G., Wilson S., Baptista M.A., Fiske B.K., Fell M.J., RA Morrow J.A., Reith A.D., Alessi D.R., Mann M.; RT "Phosphoproteomics reveals that Parkinson's disease kinase LRRK2 regulates RT a subset of Rab GTPases."; RL Elife 5:0-0(2016). RN [32] RP FUNCTION. RX PubMed=27103069; DOI=10.15252/embj.201593350; RA Sellier C., Campanari M.L., Julie Corbier C., Gaucherot A., RA Kolb-Cheynel I., Oulad-Abdelghani M., Ruffenach F., Page A., Ciura S., RA Kabashi E., Charlet-Berguerand N.; RT "Loss of C9ORF72 impairs autophagy and synergizes with polyQ Ataxin-2 to RT induce motor neuron dysfunction and cell death."; RL EMBO J. 35:1276-1297(2016). RN [33] RP INTERACTION WITH GDI1; GDI2; CHM; CHML; RILPL1 AND RILPL2, SUBCELLULAR RP LOCATION, PHOSPHORYLATION AT THR-72, AND MUTAGENESIS OF THR-72. RX PubMed=29125462; DOI=10.7554/elife.31012; RA Steger M., Diez F., Dhekne H.S., Lis P., Nirujogi R.S., Karayel O., RA Tonelli F., Martinez T.N., Lorentzen E., Pfeffer S.R., Alessi D.R., RA Mann M.; RT "Systematic proteomic analysis of LRRK2-mediated Rab GTPase phosphorylation RT establishes a connection to ciliogenesis."; RL Elife 6:0-0(2017). RN [34] RP FUNCTION, INTERACTION WITH RILPL1, SUBCELLULAR LOCATION, PHOSPHORYLATION AT RP THR-72, AND MUTAGENESIS OF THR-72. RX PubMed=30398148; DOI=10.7554/elife.40202; RA Dhekne H.S., Yanatori I., Gomez R.C., Tonelli F., Diez F., Schuele B., RA Steger M., Alessi D.R., Pfeffer S.R.; RT "A pathway for Parkinson's Disease LRRK2 kinase to block primary cilia and RT Sonic hedgehog signaling in the brain."; RL Elife 7:0-0(2018). RN [35] RP X-RAY CRYSTALLOGRAPHY (2.0 ANGSTROMS) OF 6-176 IN COMPLEX WITH OCRL. RX PubMed=21378754; DOI=10.1038/emboj.2011.60; RA Hou X., Hagemann N., Schoebel S., Blankenfeldt W., Goody R.S., RA Erdmann K.S., Itzen A.; RT "A structural basis for Lowe syndrome caused by mutations in the Rab- RT binding domain of OCRL1."; RL EMBO J. 30:1659-1670(2011). RN [36] RP X-RAY CRYSTALLOGRAPHY (2.85 ANGSTROMS) OF 1-207 IN COMPLEX WITH MICALCL, RP AND INTERACTION WITH MICAL3; MICAL1; EHBP1 AND EHBP1L1. RX PubMed=27552051; DOI=10.7554/elife.18675; RA Rai A., Oprisko A., Campos J., Fu Y., Friese T., Itzen A., Goody R.S., RA Gazdag E.M., Muller M.P.; RT "bMERB domains are bivalent Rab8 family effectors evolved by gene RT duplication."; RL Elife 5:E18675-E18675(2016). CC -!- FUNCTION: The small GTPases Rab are key regulators of intracellular CC membrane trafficking, from the formation of transport vesicles to their CC fusion with membranes. Rabs cycle between an inactive GDP-bound form CC and an active GTP-bound form that is able to recruit to membranes CC different sets of downstream effectors directly responsible for vesicle CC formation, movement, tethering and fusion. That Rab is involved in CC polarized vesicular trafficking and neurotransmitter release. Together CC with RAB11A, RAB3IP, the exocyst complex, PARD3, PRKCI, ANXA2, CDC42 CC and DNMBP promotes transcytosis of PODXL to the apical membrane CC initiation sites (AMIS), apical surface formation and lumenogenesis CC (PubMed:20890297). Together with MYO5B and RAB11A participates in CC epithelial cell polarization (PubMed:21282656). May be involved in CC ciliogenesis (PubMed:21844891, PubMed:30398148). Together with MICALL2, CC may also regulate adherens junction assembly (By similarity). May play CC a role in insulin-induced transport to the plasma membrane of the CC glucose transporter GLUT4 and therefore play a role in glucose CC homeostasis (By similarity). Involved in autophagy (PubMed:27103069). CC {ECO:0000250|UniProtKB:P35280, ECO:0000250|UniProtKB:P55258, CC ECO:0000269|PubMed:20890297, ECO:0000269|PubMed:21282656, CC ECO:0000269|PubMed:21844891, ECO:0000269|PubMed:27103069, CC ECO:0000269|PubMed:30398148}. CC -!- ACTIVITY REGULATION: Activated in response to insulin. {ECO:0000250}. CC -!- SUBUNIT: Interacts (GTP-bound form) with MICALL1; regulates RAB8A CC association with recycling endosomes (By similarity). Interacts with CC MICALL2; competes with RAB13 and is involved in E-cadherin endocytic CC recycling (By similarity). Interacts (GTP-bound form) with MICAL1, CC MICALCL, MICAL3, EHBP1 and EHBP1L1; at least in case of MICAL1, CC MICALCL, MICAL3 and EHBP1L1 two molecules of RAB8A can bind to one CC molecule of the effector protein; ternary complexes of RAB8A, RAB13 and CC either MICAL1 or EHBP1L1 are possible (PubMed:27552051). Interacts with CC EHD1 (PubMed:19864458). Interacts with MAP4K2 and SYTL4 (By CC similarity). Interacts with SGSM1 and SGSM3 (By similarity). Interacts CC with RABIF, RIMS2, RPH3A and RPH3A (By similarity). Interacts with OPTN CC (PubMed:15837803). Interacts with RAB3IP (PubMed:12221131). Interacts CC with MYO5B (PubMed:21282656). Interacts with PIFO (PubMed:20643351). CC Interacts with BIRC6/bruce (PubMed:18329369). Interacts with OCRL CC (PubMed:22543976, PubMed:21378754). Interacts with AHI1 (By CC similarity). Interacts with DCDC1 (PubMed:22159412). Interacts with CC LRRK2; interaction facilitates phosphorylation of Thr-72 CC (PubMed:26824392). Interacts with RAB31P, GDI1, GDI2, CHM, CHML, CC RABGGTA, RABGGTB, TBC1D15 and INPP5B; these interactions are dependent CC on Thr-72 not being phosphorylated (PubMed:26824392, PubMed:29125462). CC Interacts with RILPL1 and RILPL2; these interactions are dependent on CC the phosphorylation of Thr-72 by LRRK2 (PubMed:29125462, CC PubMed:30398148). {ECO:0000250|UniProtKB:P55258, CC ECO:0000269|PubMed:12221131, ECO:0000269|PubMed:15837803, CC ECO:0000269|PubMed:18329369, ECO:0000269|PubMed:19864458, CC ECO:0000269|PubMed:20643351, ECO:0000269|PubMed:21282656, CC ECO:0000269|PubMed:21378754, ECO:0000269|PubMed:22159412, CC ECO:0000269|PubMed:22543976, ECO:0000269|PubMed:26824392, CC ECO:0000269|PubMed:27552051, ECO:0000269|PubMed:29125462, CC ECO:0000269|PubMed:30398148}. CC -!- INTERACTION: CC P61006; Q5S007: LRRK2; NbExp=7; IntAct=EBI-722293, EBI-5323863; CC P61006; Q01968: OCRL; NbExp=15; IntAct=EBI-722293, EBI-6148898; CC P61006; Q96CV9: OPTN; NbExp=4; IntAct=EBI-722293, EBI-748974; CC P61006; Q96QF0: RAB3IP; NbExp=5; IntAct=EBI-722293, EBI-747844; CC P61006; Q96QF0-2: RAB3IP; NbExp=2; IntAct=EBI-722293, EBI-747865; CC P61006; P47224: RABIF; NbExp=6; IntAct=EBI-722293, EBI-713992; CC P61006; Q5EBL4: RILPL1; NbExp=2; IntAct=EBI-722293, EBI-2797110; CC P61006; Q969X0: RILPL2; NbExp=8; IntAct=EBI-722293, EBI-717552; CC P61006; O60271: SPAG9; NbExp=3; IntAct=EBI-722293, EBI-1023301; CC P61006; Q5ZWZ3: lpg0940; Xeno; NbExp=3; IntAct=EBI-722293, EBI-6417967; CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000269|PubMed:26824392, CC ECO:0000305|PubMed:12221131}; Lipid-anchor CC {ECO:0000305|PubMed:12221131}; Cytoplasmic side CC {ECO:0000305|PubMed:12221131}. Golgi apparatus CC {ECO:0000269|PubMed:15837803}. Recycling endosome membrane CC {ECO:0000269|PubMed:19864458}. Cell projection, cilium CC {ECO:0000269|PubMed:21844891, ECO:0000269|PubMed:29125462}. Cytoplasmic CC vesicle, phagosome {ECO:0000269|PubMed:21255211}. Cytoplasmic vesicle, CC phagosome membrane {ECO:0000250|UniProtKB:Q92930}; Lipid-anchor CC {ECO:0000250|UniProtKB:Q92930}; Cytoplasmic side CC {ECO:0000250|UniProtKB:Q92930}. Cytoplasm, cytoskeleton, microtubule CC organizing center, centrosome, centriole CC {ECO:0000250|UniProtKB:P55258}. Cytoplasm, cytoskeleton, cilium basal CC body {ECO:0000269|PubMed:30398148}. Midbody CC {ECO:0000269|PubMed:22159412}. Cytoplasm {ECO:0000269|PubMed:26824392}. CC Cytoplasm, cytoskeleton, cilium axoneme {ECO:0000269|PubMed:30398148}. CC Note=Colocalizes with OPTN at the Golgi complex and in vesicular CC structures close to the plasma membrane (PubMed:15837803). In the GDP- CC bound form, present in the perinuclear region (PubMed:12221131). Shows CC a polarized distribution to distal regions of cell protrusions in the CC GTP-bound form (PubMed:12221131). Colocalizes with PARD3, PRKCI, EXOC5, CC OCLN, PODXL and RAB11A in apical membrane initiation sites (AMIS) CC during the generation of apical surface and lumenogenesis CC (PubMed:20890297). Localizes to tubular recycling endosome CC (PubMed:19864458). Recruited to phagosomes containing S.aureus or CC M.tuberculosis (PubMed:21255211). Non-phosphorylated RAB8A CC predominantly localizes to the cytoplasm whereas phosphorylated RAB8A CC localizes to the membrane (PubMed:26824392, PubMed:29125462, CC PubMed:30398148). {ECO:0000269|PubMed:12221131, CC ECO:0000269|PubMed:15837803, ECO:0000269|PubMed:19864458, CC ECO:0000269|PubMed:20890297, ECO:0000269|PubMed:21255211, CC ECO:0000269|PubMed:26824392, ECO:0000269|PubMed:29125462, CC ECO:0000269|PubMed:30398148}. CC -!- ALTERNATIVE PRODUCTS: CC Event=Alternative splicing; Named isoforms=2; CC Name=1; CC IsoId=P61006-1; Sequence=Displayed; CC Name=2; CC IsoId=P61006-2; Sequence=VSP_056399; CC -!- PTM: Phosphorylation of Thr-72 in the switch II region by LRRK2 CC prevents the association of RAB regulatory proteins, including CHM, CC CHML and RAB GDP dissociation inhibitors GDI1 and GDI2. CC {ECO:0000269|PubMed:26824392, ECO:0000269|PubMed:29125462}. CC -!- SIMILARITY: Belongs to the small GTPase superfamily. Rab family. CC {ECO:0000305}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; X56741; CAA40065.1; -; mRNA. DR EMBL; S53268; AAB19681.1; -; mRNA. DR EMBL; AF498943; AAM21091.1; -; mRNA. DR EMBL; BT007184; AAP35848.1; -; mRNA. DR EMBL; AK293676; BAG57118.1; -; mRNA. DR EMBL; CR536583; CAG38820.1; -; mRNA. DR EMBL; AC008894; -; NOT_ANNOTATED_CDS; Genomic_DNA. DR EMBL; CR542274; CAG47070.1; -; mRNA. DR EMBL; CH471106; EAW84526.1; -; Genomic_DNA. DR EMBL; BC002977; AAH02977.1; -; mRNA. DR CCDS; CCDS12339.1; -. [P61006-1] DR PIR; B49647; B49647. DR RefSeq; NP_005361.2; NM_005370.4. [P61006-1] DR PDB; 3QBT; X-ray; 2.00 A; A/C/E/G=6-176. DR PDB; 3TNF; X-ray; 2.50 A; A=6-176. DR PDB; 4LHV; X-ray; 1.95 A; A/B/C/D/E=6-176. DR PDB; 4LHW; X-ray; 1.55 A; A/B/C/D/E=6-176. DR PDB; 4LHX; X-ray; 3.05 A; A/B=1-184. DR PDB; 4LHY; X-ray; 3.10 A; A/B=1-184. DR PDB; 4LHZ; X-ray; 3.20 A; A/B=1-184. DR PDB; 4LI0; X-ray; 3.30 A; A/B=1-184. DR PDB; 5SZI; X-ray; 2.85 A; A=1-207. DR PDB; 6RIR; X-ray; 1.77 A; A/B=1-181. DR PDB; 6SQ2; X-ray; 1.68 A; A/B=1-181. DR PDB; 6STF; X-ray; 2.40 A; A/B/C/D/E=5-176. DR PDB; 6STG; X-ray; 2.50 A; A/B=5-176. DR PDB; 6ZSI; X-ray; 1.91 A; A/B=1-176. DR PDB; 6ZSJ; X-ray; 2.00 A; A/B=1-176. DR PDB; 7BWT; X-ray; 2.30 A; B=2-183. DR PDBsum; 3QBT; -. DR PDBsum; 3TNF; -. DR PDBsum; 4LHV; -. DR PDBsum; 4LHW; -. DR PDBsum; 4LHX; -. DR PDBsum; 4LHY; -. DR PDBsum; 4LHZ; -. DR PDBsum; 4LI0; -. DR PDBsum; 5SZI; -. DR PDBsum; 6RIR; -. DR PDBsum; 6SQ2; -. DR PDBsum; 6STF; -. DR PDBsum; 6STG; -. DR PDBsum; 6ZSI; -. DR PDBsum; 6ZSJ; -. DR PDBsum; 7BWT; -. DR SMR; P61006; -. DR BioGRID; 110382; 126. DR CORUM; P61006; -. DR DIP; DIP-43703N; -. DR IntAct; P61006; 96. DR MINT; P61006; -. DR STRING; 9606.ENSP00000300935; -. DR iPTMnet; P61006; -. DR PhosphoSitePlus; P61006; -. DR SwissPalm; P61006; -. DR BioMuta; RAB8A; -. DR DMDM; 46810392; -. DR EPD; P61006; -. DR jPOST; P61006; -. DR MassIVE; P61006; -. DR MaxQB; P61006; -. DR PaxDb; P61006; -. DR PeptideAtlas; P61006; -. DR PRIDE; P61006; -. DR ProteomicsDB; 57245; -. [P61006-1] DR Antibodypedia; 27297; 285 antibodies. DR DNASU; 4218; -. DR Ensembl; ENST00000300935; ENSP00000300935; ENSG00000167461. [P61006-1] DR Ensembl; ENST00000586682; ENSP00000467501; ENSG00000167461. [P61006-2] DR GeneID; 4218; -. DR KEGG; hsa:4218; -. DR UCSC; uc002ndn.5; human. [P61006-1] DR CTD; 4218; -. DR DisGeNET; 4218; -. DR GeneCards; RAB8A; -. DR HGNC; HGNC:7007; RAB8A. DR HPA; ENSG00000167461; Low tissue specificity. DR MIM; 165040; gene. DR neXtProt; NX_P61006; -. DR OpenTargets; ENSG00000167461; -. DR PharmGKB; PA30743; -. DR VEuPathDB; HostDB:ENSG00000167461.11; -. DR eggNOG; KOG0078; Eukaryota. DR GeneTree; ENSGT00940000157246; -. DR HOGENOM; CLU_041217_23_1_1; -. DR InParanoid; P61006; -. DR OMA; KAPSWLS; -. DR OrthoDB; 1426655at2759; -. DR PhylomeDB; P61006; -. DR TreeFam; TF314097; -. DR BRENDA; 3.6.5.2; 2681. DR PathwayCommons; P61006; -. DR Reactome; R-HSA-1445148; Translocation of SLC2A4 (GLUT4) to the plasma membrane. DR Reactome; R-HSA-2565942; Regulation of PLK1 Activity at G2/M Transition. DR Reactome; R-HSA-5620912; Anchoring of the basal body to the plasma membrane. DR Reactome; R-HSA-5620916; VxPx cargo-targeting to cilium. DR Reactome; R-HSA-8854214; TBC/RABGAPs. DR Reactome; R-HSA-8873719; RAB geranylgeranylation. DR Reactome; R-HSA-8876198; RAB GEFs exchange GTP for GDP on RABs. DR SIGNOR; P61006; -. DR BioGRID-ORCS; 4218; 9 hits in 1004 CRISPR screens. DR ChiTaRS; RAB8A; human. DR GeneWiki; RAB8A; -. DR GenomeRNAi; 4218; -. DR Pharos; P61006; Tbio. DR PRO; PR:P61006; -. DR Proteomes; UP000005640; Chromosome 19. DR RNAct; P61006; protein. DR Bgee; ENSG00000167461; Expressed in liver and 251 other tissues. DR ExpressionAtlas; P61006; baseline and differential. DR Genevisible; P61006; HS. DR GO; GO:0005814; C:centriole; IEA:UniProtKB-SubCell. DR GO; GO:0005813; C:centrosome; IDA:UniProtKB. DR GO; GO:0005929; C:cilium; IDA:UniProtKB. DR GO; GO:0005829; C:cytosol; TAS:Reactome. DR GO; GO:0043197; C:dendritic spine; IBA:GO_Central. DR GO; GO:0005768; C:endosome; IBA:GO_Central. DR GO; GO:0070062; C:extracellular exosome; HDA:UniProtKB. DR GO; GO:0098978; C:glutamatergic synapse; IEA:Ensembl. DR GO; GO:0000139; C:Golgi membrane; TAS:Reactome. DR GO; GO:0030496; C:midbody; IDA:UniProtKB. DR GO; GO:0043025; C:neuronal cell body; IEA:Ensembl. DR GO; GO:0097730; C:non-motile cilium; IDA:BHF-UCL. DR GO; GO:0045335; C:phagocytic vesicle; IDA:UniProtKB. DR GO; GO:0030670; C:phagocytic vesicle membrane; IEA:UniProtKB-SubCell. DR GO; GO:0005886; C:plasma membrane; IBA:GO_Central. DR GO; GO:0014069; C:postsynaptic density; IEA:Ensembl. DR GO; GO:0055038; C:recycling endosome membrane; IDA:UniProtKB. DR GO; GO:0008021; C:synaptic vesicle; IBA:GO_Central. DR GO; GO:0032588; C:trans-Golgi network membrane; TAS:Reactome. DR GO; GO:0030140; C:trans-Golgi network transport vesicle; IBA:GO_Central. DR GO; GO:0019003; F:GDP binding; IDA:UniProtKB. DR GO; GO:0005525; F:GTP binding; IDA:UniProtKB. DR GO; GO:0003924; F:GTPase activity; IDA:UniProtKB. DR GO; GO:0031489; F:myosin V binding; IPI:UniProtKB. DR GO; GO:0019901; F:protein kinase binding; IEA:Ensembl. DR GO; GO:0031267; F:small GTPase binding; ISS:UniProtKB. DR GO; GO:0006914; P:autophagy; IEA:UniProtKB-KW. DR GO; GO:0007409; P:axonogenesis; ISS:UniProtKB. DR GO; GO:0032869; P:cellular response to insulin stimulus; ISS:UniProtKB. DR GO; GO:0060271; P:cilium assembly; IDA:BHF-UCL. DR GO; GO:0048210; P:Golgi vesicle fusion to target membrane; IDA:BHF-UCL. DR GO; GO:0098969; P:neurotransmitter receptor transport to postsynaptic membrane; IBA:GO_Central. DR GO; GO:0098887; P:neurotransmitter receptor transport, endosome to postsynaptic membrane; IEA:Ensembl. DR GO; GO:0043687; P:post-translational protein modification; TAS:Reactome. DR GO; GO:0072659; P:protein localization to plasma membrane; ISS:UniProtKB. DR GO; GO:0009306; P:protein secretion; IBA:GO_Central. DR GO; GO:0010506; P:regulation of autophagy; IMP:UniProtKB. DR GO; GO:0017157; P:regulation of exocytosis; IBA:GO_Central. DR GO; GO:0048169; P:regulation of long-term neuronal synaptic plasticity; IEA:Ensembl. DR GO; GO:0051223; P:regulation of protein transport; IEA:Ensembl. DR GO; GO:0006904; P:vesicle docking involved in exocytosis; IDA:BHF-UCL. DR GO; GO:0099003; P:vesicle-mediated transport in synapse; IEA:Ensembl. DR InterPro; IPR027417; P-loop_NTPase. DR InterPro; IPR005225; Small_GTP-bd_dom. DR InterPro; IPR001806; Small_GTPase. DR Pfam; PF00071; Ras; 1. DR SUPFAM; SSF52540; SSF52540; 1. DR TIGRFAMs; TIGR00231; small_GTP; 1. DR PROSITE; PS51419; RAB; 1. PE 1: Evidence at protein level; KW 3D-structure; Alternative splicing; Autophagy; Cell membrane; KW Cell projection; Cilium; Cilium biogenesis/degradation; Cytoplasm; KW Cytoplasmic vesicle; Cytoskeleton; Endosome; Golgi apparatus; GTP-binding; KW Lipoprotein; Membrane; Methylation; Nucleotide-binding; Phosphoprotein; KW Prenylation; Protein transport; Proto-oncogene; Reference proteome; KW Transport. FT CHAIN 1..204 FT /note="Ras-related protein Rab-8A" FT /id="PRO_0000121130" FT PROPEP 205..207 FT /note="Removed in mature form" FT /evidence="ECO:0000255" FT /id="PRO_0000370793" FT NP_BIND 17..22 FT /note="GTP" FT /evidence="ECO:0000269|PubMed:27552051, FT ECO:0007744|PDB:5SZI" FT NP_BIND 34..40 FT /note="GTP" FT /evidence="ECO:0000269|PubMed:27552051, FT ECO:0007744|PDB:5SZI" FT NP_BIND 63..67 FT /note="GTP" FT /evidence="ECO:0000250|UniProtKB:Q9H0U4, FT ECO:0000269|PubMed:27552051, ECO:0007744|PDB:5SZI" FT NP_BIND 121..124 FT /note="GTP" FT /evidence="ECO:0000269|PubMed:27552051, FT ECO:0007744|PDB:5SZI" FT NP_BIND 152..154 FT /note="GTP" FT /evidence="ECO:0000250|UniProtKB:Q9H0U4, FT ECO:0000269|PubMed:27552051, ECO:0007744|PDB:5SZI" FT MOTIF 37..45 FT /note="Effector region" FT /evidence="ECO:0000250" FT MOD_RES 72 FT /note="Phosphothreonine; by LRRK2" FT /evidence="ECO:0000269|PubMed:26824392, FT ECO:0000269|PubMed:29125462, ECO:0000269|PubMed:30398148" FT MOD_RES 181 FT /note="Phosphoserine" FT /evidence="ECO:0007744|PubMed:20068231" FT MOD_RES 185 FT /note="Phosphoserine" FT /evidence="ECO:0007744|PubMed:17081983, FT ECO:0007744|PubMed:20068231, ECO:0007744|PubMed:21406692, FT ECO:0007744|PubMed:23186163, ECO:0007744|PubMed:24275569" FT MOD_RES 204 FT /note="Cysteine methyl ester" FT /evidence="ECO:0000255" FT LIPID 204 FT /note="S-geranylgeranyl cysteine" FT /evidence="ECO:0000269|PubMed:8375503" FT VAR_SEQ 161..205 FT /note="AFFTLARDIKAKMDKKLEGNSPQGSNQGVKITPDQQKRSSFFRCV -> RYQ FT SKNGQKIGRQQPPGEQPGSQNHTGPAEEEQLFPMCSSVRNTA (in isoform 2)" FT /evidence="ECO:0000303|PubMed:14702039" FT /id="VSP_056399" FT MUTAGEN 22 FT /note="T->N: Loss of interaction with MICALL1." FT /evidence="ECO:0000269|PubMed:19864458" FT MUTAGEN 67 FT /note="Q->L: Probable constitutively active mutant locked FT in the active GTP-bound form. Stimulates interaction with FT MICALL1." FT /evidence="ECO:0000269|PubMed:19864458" FT MUTAGEN 72 FT /note="T->A: Loss of phosphorylation. No effect on the FT binding of GDP or GTP. Localizes primarily to the Golgi FT complex but does not affect membrane localization." FT /evidence="ECO:0000269|PubMed:26824392, FT ECO:0000269|PubMed:29125462, ECO:0000269|PubMed:30398148" FT MUTAGEN 72 FT /note="T->E: Phosphomimetic mutant. No effect on the FT binding of GDP or GTP. Loss of GDI1, GDI2, CHM, CHML, FT RABGGTA, RABGGTB, RAB3IP, TBC1D15, and INPP5B binding. FT Increases localization to the cell membrane." FT /evidence="ECO:0000269|PubMed:26824392, FT ECO:0000269|PubMed:29125462, ECO:0000269|PubMed:30398148" FT CONFLICT 177..183 FT /note="LEGNSPQ -> WKATAP (in Ref. 2; AAB19681)" FT /evidence="ECO:0000305" FT STRAND 7..14 FT /evidence="ECO:0007829|PDB:4LHW" FT HELIX 21..30 FT /evidence="ECO:0007829|PDB:4LHW" FT STRAND 36..38 FT /evidence="ECO:0007829|PDB:6STF" FT STRAND 42..52 FT /evidence="ECO:0007829|PDB:4LHW" FT STRAND 55..64 FT /evidence="ECO:0007829|PDB:4LHW" FT STRAND 65..67 FT /evidence="ECO:0007829|PDB:6STF" FT TURN 69..72 FT /evidence="ECO:0007829|PDB:4LHW" FT HELIX 73..78 FT /evidence="ECO:0007829|PDB:4LHW" FT STRAND 82..89 FT /evidence="ECO:0007829|PDB:4LHW" FT HELIX 93..97 FT /evidence="ECO:0007829|PDB:4LHW" FT HELIX 99..109 FT /evidence="ECO:0007829|PDB:4LHW" FT STRAND 115..121 FT /evidence="ECO:0007829|PDB:4LHW" FT TURN 122..124 FT /evidence="ECO:0007829|PDB:4LHX" FT HELIX 126..128 FT /evidence="ECO:0007829|PDB:4LHW" FT HELIX 133..142 FT /evidence="ECO:0007829|PDB:4LHW" FT STRAND 146..149 FT /evidence="ECO:0007829|PDB:4LHW" FT TURN 152..155 FT /evidence="ECO:0007829|PDB:4LHW" FT HELIX 158..174 FT /evidence="ECO:0007829|PDB:4LHW" SQ SEQUENCE 207 AA; 23668 MW; AA52DBF54A2CD056 CRC64; MAKTYDYLFK LLLIGDSGVG KTCVLFRFSE DAFNSTFIST IGIDFKIRTI ELDGKRIKLQ IWDTAGQERF RTITTAYYRG AMGIMLVYDI TNEKSFDNIR NWIRNIEEHA SADVEKMILG NKCDVNDKRQ VSKERGEKLA LDYGIKFMET SAKANINVEN AFFTLARDIK AKMDKKLEGN SPQGSNQGVK ITPDQQKRSS FFRCVLL //