ID GVPI2_HALSA Reviewed; 113 AA. AC Q9HHT7; P33962; DT 11-JAN-2001, integrated into UniProtKB/Swiss-Prot. DT 11-JAN-2001, sequence version 1. DT 13-SEP-2023, entry version 83. DE RecName: Full=Gas vesicle protein I2; DE Short=GvpI2; GN Name=gvpI2 {ECO:0000312|EMBL:AAG20889.1}; GN Synonyms=c-gvpI {ECO:0000303|PubMed:1404376}; GN OrderedLocusNames=VNG_6233G {ECO:0000312|EMBL:AAG20889.1}; OS Halobacterium salinarum (strain ATCC 700922 / JCM 11081 / NRC-1) OS (Halobacterium halobium). OG Plasmid pNRC200. OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Halobacteriales; OC Halobacteriaceae; Halobacterium. OX NCBI_TaxID=64091; RN [1] RP NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND GAS VESICLE GENE CLUSTER. RC STRAIN=NRC-817; RX PubMed=1404376; DOI=10.1016/0022-2836(92)90914-6; RA Englert C., Krueger K., Offner S., Pfeifer F.; RT "Three different but related gene clusters encoding gas vesicles in RT halophilic archaea."; RL J. Mol. Biol. 227:586-592(1992). RN [2] {ECO:0000312|EMBL:CAA64348.1} RP NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND INDUCTION. RC STRAIN=PHH1 /PHH4; RX PubMed=8763925; DOI=10.1128/jb.178.14.4012-4019.1996; RA Krueger K., Pfeifer F.; RT "Transcript analysis of the c-vac region and differential synthesis of the RT two regulatory gas vesicle proteins GvpD and GvpE in Halobacterium RT salinarium PHH4."; RL J. Bacteriol. 178:4012-4019(1996). RN [3] {ECO:0000312|EMBL:AAG20889.1} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=ATCC 700922 / JCM 11081 / NRC-1; PLASMID=pNRC200; RX PubMed=11016950; DOI=10.1073/pnas.190337797; RA Ng W.V., Kennedy S.P., Mahairas G.G., Berquist B., Pan M., Shukla H.D., RA Lasky S.R., Baliga N.S., Thorsson V., Sbrogna J., Swartzell S., Weir D., RA Hall J., Dahl T.A., Welti R., Goo Y.A., Leithauser B., Keller K., Cruz R., RA Danson M.J., Hough D.W., Maddocks D.G., Jablonski P.E., Krebs M.P., RA Angevine C.M., Dale H., Isenbarger T.A., Peck R.F., Pohlschroder M., RA Spudich J.L., Jung K.-H., Alam M., Freitas T., Hou S., Daniels C.J., RA Dennis P.P., Omer A.D., Ebhardt H., Lowe T.M., Liang P., Riley M., Hood L., RA DasSarma S.; RT "Genome sequence of Halobacterium species NRC-1."; RL Proc. Natl. Acad. Sci. U.S.A. 97:12176-12181(2000). RN [4] RP FUNCTION IN BUOYANCY, AND POSSIBLE INDUCTION BY OXYGEN LIMITATION. RC STRAIN=PHH1; RX PubMed=33711860; DOI=10.1099/00221287-143-2-467; RA Beard S.J., Hayes P.K., Walsby A.E.; RT "Growth competition between Halobacterium salinarium strain PHH1 and RT mutants affected in gas vesicle synthesis."; RL Microbiology 143:467-473(1997). RN [5] RP FUNCTION. RC STRAIN=PHH1; RX PubMed=9611808; DOI=10.1099/00221287-144-5-1331; RA Offner S., Ziese U., Wanner G., Typke D., Pfeifer F.; RT "Structural characteristics of halobacterial gas vesicles."; RL Microbiology 144:1331-1342(1998). CC -!- FUNCTION: Proteins GvpF to GvpM might be involved in nucleating gas CC vesicle formation. A minor component of the gas vesicle (By CC similarity). Gas vesicles are hollow, gas filled proteinaceous CC nanostructures found in several microbial planktonic microorganisms. CC They allow positioning of halobacteria at the optimal depth for growth CC in the poorly aerated, shallow brine pools of their habitat CC (PubMed:33711860). {ECO:0000250|UniProtKB:Q9HI24, CC ECO:0000269|PubMed:33711860}. CC -!- FUNCTION: Expression of 2 c-vac DNA fragments containing 2 divergently CC transcribed regions (gvpE-gvpF-gvpG-gvpH-gvpI-gvpJ-gvpK-gvpL-gvpM and CC gvpA-gvpC-gvpN-gvpO) allows H.volcanii to produce gas vesicles. CC {ECO:0000269|PubMed:9611808}. CC -!- SUBUNIT: GvpF to GvpM interact with each other in vitro, and may form CC multi-subunit complex(es). Interacts with GvpC and GvpO. CC {ECO:0000250|UniProtKB:Q9HI24}. CC -!- SUBCELLULAR LOCATION: Gas vesicle {ECO:0000250|UniProtKB:Q9HI24}. CC -!- INDUCTION: In PHH4 (a deletion of the p-vac locus) transcribed in all CC growth phases, maximal expression in mid-stationary phase. An unstable CC 6kb transcript able to cover gvpD-gvpE-gvpF-gvpG-gvpH-gvpI-gvpJ-gvpK- CC gvpL-gvpM is detected, as well as smaller transcripts (PubMed:8763925). CC Gas vesicles appear earlier when grown in static culture, possibly due CC to O(2)-limitation (PubMed:33711860). {ECO:0000269|PubMed:33711860, CC ECO:0000269|PubMed:8763925}. CC -!- MISCELLANEOUS: Encoded in a 14-gene locus called c-vac which produces CC cylindrical gas vesicles only in the stationary growth phase. CC {ECO:0000269|PubMed:1404376, ECO:0000269|PubMed:8763925}. CC -!- SIMILARITY: Belongs to the gas vesicle GvpI family. {ECO:0000305}. CC -!- SEQUENCE CAUTION: CC Sequence=CAA45988.1; Type=Frameshift; Evidence={ECO:0000305}; CC Sequence=CAA64348.1; Type=Frameshift; Evidence={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; X64730; CAA45988.1; ALT_FRAME; Genomic_DNA. DR EMBL; X94688; CAA64348.1; ALT_FRAME; Genomic_DNA. DR EMBL; AE004438; AAG20889.1; -; Genomic_DNA. DR RefSeq; WP_010904102.1; NZ_BK010831.1. DR AlphaFoldDB; Q9HHT7; -. DR SMR; Q9HHT7; -. DR EnsemblBacteria; AAG20889; AAG20889; VNG_6233G. DR GeneID; 68695193; -. DR KEGG; hal:VNG_6233G; -. DR PATRIC; fig|64091.14.peg.2237; -. DR HOGENOM; CLU_147792_0_0_2; -. DR InParanoid; Q9HHT7; -. DR Proteomes; UP000000554; Plasmid pNRC200. DR GO; GO:0031411; C:gas vesicle; IEA:UniProtKB-SubCell. PE 1: Evidence at protein level; KW Gas vesicle; Plasmid; Reference proteome. FT CHAIN 1..113 FT /note="Gas vesicle protein I2" FT /id="PRO_0000182691" FT REGION 1..93 FT /note="Disordered" FT /evidence="ECO:0000256|SAM:MobiDB-lite" FT COMPBIAS 1..20 FT /note="Polar residues" FT /evidence="ECO:0000256|SAM:MobiDB-lite" FT COMPBIAS 54..91 FT /note="Polar residues" FT /evidence="ECO:0000256|SAM:MobiDB-lite" SQ SEQUENCE 113 AA; 12526 MW; DEBFFF8033A0473E CRC64; MTPTNRHTHG QNAQHARRNA QQSRDAARRK LIAQHAALAE QRARNRRRSD TEQPTSDTTN PAAHSTLPAQ RTNAQNAARN AHSTVPEQPT HATTAARARL YGLRLHNTAT TDK //