ID A0A193D349_IMPCY Unreviewed; 734 AA. AC A0A193D349; DT 05-OCT-2016, integrated into UniProtKB/TrEMBL. DT 05-OCT-2016, sequence version 1. DT 02-NOV-2016, entry version 2. DE RecName: Full=Photosystem I P700 chlorophyll a apoprotein A2 {ECO:0000256|HAMAP-Rule:MF_00482}; DE EC=1.97.1.12 {ECO:0000256|HAMAP-Rule:MF_00482}; DE AltName: Full=PSI-B {ECO:0000256|HAMAP-Rule:MF_00482}; DE AltName: Full=PsaB {ECO:0000256|HAMAP-Rule:MF_00482}; GN Name=psaB {ECO:0000256|HAMAP-Rule:MF_00482, GN ECO:0000313|EMBL:ANN36025.1}; GN ORFNames=IMCY_g020 {ECO:0000313|EMBL:ANN36025.1}; OS Imperata cylindrica (Cogon grass). OG Plastid; Chloroplast {ECO:0000313|EMBL:ANN36025.1}. OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; OC Spermatophyta; Magnoliophyta; Liliopsida; Poales; Poaceae; OC PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; OC Andropogoneae incertae sedis; Imperata. OX NCBI_TaxID=80369 {ECO:0000313|EMBL:ANN36025.1}; RN [1] {ECO:0000313|EMBL:ANN36025.1} RP NUCLEOTIDE SEQUENCE. RX PubMed=27316745; DOI=10.1186/s12870-016-0823-3; RA Burke S.V., Wysocki W.P., Zuloaga F.O., Craine J.M., Pires J.C., RA Edger P.P., Mayfield-Jones D., Clark L.G., Kelchner S.A., Duvall M.R.; RT "Evolutionary relationships in Panicoid grasses based on plastome RT phylogenomics (Panicoideae; Poaceae)."; RL BMC Plant Biol. 16:140-140(2016). CC -!- FUNCTION: PsaA and PsaB bind P700, the primary electron donor of CC photosystem I (PSI), as well as the electron acceptors A0, A1 and CC FX. PSI is a plastocyanin-ferredoxin oxidoreductase, converting CC photonic excitation into a charge separation, which transfers an CC electron from the donor P700 chlorophyll pair to the CC spectroscopically characterized acceptors A0, A1, FX, FA and FB in CC turn. Oxidized P700 is reduced on the lumenal side of the CC thylakoid membrane by plastocyanin. {ECO:0000256|HAMAP- CC Rule:MF_00482}. CC -!- CATALYTIC ACTIVITY: Reduced plastocyanin + oxidized ferredoxin + CC light = oxidized plastocyanin + reduced ferredoxin. CC {ECO:0000256|HAMAP-Rule:MF_00482}. CC -!- COFACTOR: CC Note=P700 is a chlorophyll a/chlorophyll a' dimer, A0 is one or CC more chlorophyll a, A1 is one or both phylloquinones and FX is a CC shared 4Fe-4S iron-sulfur center. {ECO:0000256|HAMAP- CC Rule:MF_00482}; CC -!- SUBUNIT: The PsaA/B heterodimer binds the P700 chlorophyll special CC pair and subsequent electron acceptors. PSI consists of a core CC antenna complex that captures photons, and an electron transfer CC chain that converts photonic excitation into a charge separation. CC The eukaryotic PSI reaction center is composed of at least 11 CC subunits. {ECO:0000256|HAMAP-Rule:MF_00482}. CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane CC {ECO:0000256|HAMAP-Rule:MF_00482}; Multi-pass membrane protein CC {ECO:0000256|HAMAP-Rule:MF_00482}. CC -!- SIMILARITY: Belongs to the PsaA/PsaB family. {ECO:0000256|HAMAP- CC Rule:MF_00482}. 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; KU291466; ANN36025.1; -; Genomic_DNA. DR GO; GO:0009507; C:chloroplast; IEA:UniProtKB-KW. PE 3: Inferred from homology; KW 4Fe-4S {ECO:0000256|HAMAP-Rule:MF_00482}; KW Chlorophyll {ECO:0000256|HAMAP-Rule:MF_00482}; KW Chloroplast {ECO:0000313|EMBL:ANN36025.1}; KW Chromophore {ECO:0000256|HAMAP-Rule:MF_00482}; KW Electron transport {ECO:0000256|HAMAP-Rule:MF_00482}; KW Iron {ECO:0000256|HAMAP-Rule:MF_00482}; KW Iron-sulfur {ECO:0000256|HAMAP-Rule:MF_00482}; KW Magnesium {ECO:0000256|HAMAP-Rule:MF_00482}; KW Membrane {ECO:0000256|HAMAP-Rule:MF_00482}; KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00482}; KW Oxidoreductase {ECO:0000256|HAMAP-Rule:MF_00482}; KW Photosynthesis {ECO:0000256|HAMAP-Rule:MF_00482}; KW Photosystem I {ECO:0000256|HAMAP-Rule:MF_00482}; KW Plastid {ECO:0000313|EMBL:ANN36025.1}; KW Thylakoid {ECO:0000256|HAMAP-Rule:MF_00482}; KW Transmembrane {ECO:0000256|HAMAP-Rule:MF_00482}; KW Transmembrane helix {ECO:0000256|HAMAP-Rule:MF_00482}; KW Transport {ECO:0000256|HAMAP-Rule:MF_00482}. FT TRANSMEM 39 70 Helical; Name=I. {ECO:0000256|HAMAP-Rule: FT MF_00482}. FT TRANSMEM 132 156 Helical; Name=II. {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT TRANSMEM 173 195 Helical; Name=III. {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT TRANSMEM 270 287 Helical; Name=IV. {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT TRANSMEM 331 354 Helical; Name=V. {ECO:0000256|HAMAP-Rule: FT MF_00482}. FT TRANSMEM 365 396 Helical; Name=VI. {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT TRANSMEM 416 445 Helical; Name=VII. {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT TRANSMEM 514 538 Helical; Name=VIII. {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT TRANSMEM 572 603 Helical; Name=IX. {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT TRANSMEM 644 665 Helical; Name=X. {ECO:0000256|HAMAP-Rule: FT MF_00482}. FT TRANSMEM 702 730 Helical; Name=XI. {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT METAL 559 559 Iron-sulfur (4Fe-4S); shared with dimeric FT partner. {ECO:0000256|HAMAP-Rule: FT MF_00482}. FT METAL 568 568 Iron-sulfur (4Fe-4S); shared with dimeric FT partner. {ECO:0000256|HAMAP-Rule: FT MF_00482}. FT METAL 654 654 Magnesium (chlorophyll-a B1 axial ligand; FT P700 special pair). {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT METAL 662 662 Magnesium (chlorophyll-a B3 axial FT ligand). {ECO:0000256|HAMAP-Rule: FT MF_00482}. FT BINDING 670 670 Chlorophyll-a B3. {ECO:0000256|HAMAP- FT Rule:MF_00482}. FT BINDING 671 671 Phylloquinone B. {ECO:0000256|HAMAP-Rule: FT MF_00482}. SQ SEQUENCE 734 AA; 82570 MW; 1D8165BBEDBA608F CRC64; MELRFPRFSQ GLAQDPTTRR IWFGIATAHD FESHDDITEE RLYQNIFASH FGQLAIIFLW TSGNLFHVAW QGNFESWIQD PLHVRPIAHA IWDPHFGQPA VEAFTRGGAA GPVNIAYSGV YQWWYTIGLR TNEDLYTGAL FLLFLSTLSL IGGWLHLQPK WKPSLSWFKN AESRLNHHLS GLFGVSSLAW TGHLVHVAIP GSRGEYVRWN NFLDVLPYPQ GLGPLLTGQW NLYAQNPDSS NHLFGTTQGA GTAILTLLGG FHPQTQSLWL TDIAHHHLAI AFIFLIAGHM YRTNFGIGHS IKDLLEAHTP PGGRLGRGHK GLYDTINNSI HFQLGLALAS LGVITSLVAQ HMYSLPAYAF IAQDFTTQAA LYTHHQYIAG FIMTGAFAHG AIFFIRDYNP EQNEDNVLAR MLDHKEAIIS HLSWASLFLG FHTLGLYVHN DVMLAFGTPE KQILIEPIFA QWIQSAHGKT TYGFDILLSS TNGPAFNAGR NIWLPGWLNA VNENSNSLFL TIGPGDFLVH HAIALGLHTT TLILVKGALD ARGSKLMPDK KDFGYSFPCD GPGRGGTCDI SAWDAFYLAV FWMLNTIGWV TFYWHWKHIT LWQGNVSQFN ESSTYLMGWL RDYLWLNSSQ LINGYNPFGM NSLSVWAWMF LFGHLVWATG FMFLISWRGY WQELIETLAW AHERTPLANL IRWRDKPVAL SIVQARLVGL AHFSVGYIFT YAAFLIASTS GKFG //