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A2BYP9

- PSAA_PROM5

UniProt

A2BYP9 - PSAA_PROM5

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Protein

Photosystem I P700 chlorophyll a apoprotein A1

Gene

psaA

Organism
Prochlorococcus marinus (strain MIT 9515)
Status
Reviewed - Annotation score: 3 out of 5- Protein inferred from homologyi

Functioni

PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. PSI is a plastocyanin/cytochrome c6-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin or cytochrome c6.UniRule annotation

Catalytic activityi

Reduced plastocyanin + oxidized ferredoxin + light = oxidized plastocyanin + reduced ferredoxin.UniRule annotation

Cofactori

PSI electron transfer chain: 5 divinyl chlorophyll a, 1 divinyl chlorophyll a', 2 phylloquinones and 3 4Fe-4S clusters. PSI core antenna: 90 divinyl chlorophyll a, 22 carotenoids, 3 phospholipids and 1 galactolipid. P700 is a divinyl chlorophyll a/divinyl chlorophyll a' dimer, A0 is one or more divinyl chlorophyll a, A1 is one or both phylloquinones and FX is a shared 4Fe-4S iron-sulfur center.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi593 – 5931Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
Metal bindingi602 – 6021Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
Metal bindingi685 – 6851Magnesium (divinyl chlorophyll-a' A1 axial ligand; P700 special pair)UniRule annotation
Metal bindingi693 – 6931Magnesium (divinyl chlorophyll-a A3 axial ligand)UniRule annotation
Binding sitei701 – 7011Divinyl chlorophyll-a A3UniRule annotation
Binding sitei702 – 7021Phylloquinone AUniRule annotation

GO - Molecular functioni

  1. 4 iron, 4 sulfur cluster binding Source: UniProtKB-KW
  2. chlorophyll binding Source: UniProtKB-KW
  3. electron carrier activity Source: UniProtKB-HAMAP
  4. magnesium ion binding Source: UniProtKB-HAMAP
  5. oxidoreductase activity Source: UniProtKB-KW

GO - Biological processi

  1. photosynthesis Source: UniProtKB-HAMAP
  2. protein-chromophore linkage Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

4Fe-4S, Chlorophyll, Chromophore, Iron, Iron-sulfur, Magnesium, Metal-binding

Enzyme and pathway databases

BioCyciPMAR167542:GI3N-1751-MONOMER.

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem I P700 chlorophyll a apoprotein A1UniRule annotation (EC:1.97.1.12UniRule annotation)
Alternative name(s):
PsaAUniRule annotation
Gene namesi
Name:psaAUniRule annotation
Ordered Locus Names:P9515_17031
OrganismiProchlorococcus marinus (strain MIT 9515)
Taxonomic identifieri167542 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus
ProteomesiUP000001589: Chromosome

Subcellular locationi

Cellular thylakoid membrane UniRule annotation; Multi-pass membrane protein UniRule annotation

GO - Cellular componenti

  1. integral component of membrane Source: UniProtKB-KW
  2. photosystem I Source: UniProtKB-KW
  3. thylakoid membrane Source: UniProtKB-HAMAP
Complete GO annotation...

Keywords - Cellular componenti

Membrane, Photosystem I, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 760760Photosystem I P700 chlorophyll a apoprotein A1PRO_0000294203Add
BLAST

Interactioni

Subunit structurei

The PsaA/B heterodimer binds the P700 divinyl chlorophyll special pair and subsequent electron acceptors. PSI consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation. The cyanobacterial PSI reaction center is composed of one copy each of PsaA,B,C,D,E,F,I,J,K,L,M and X, and forms trimeric complexes.UniRule annotation

Protein-protein interaction databases

STRINGi167542.P9515_17031.

Structurei

3D structure databases

ProteinModelPortaliA2BYP9.
SMRiA2BYP9. Positions 20-760.
ModBaseiSearch...
MobiDBiSearch...

Transmembrane

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei76 – 9924Helical; Name=IUniRule annotationAdd
BLAST
Transmembranei162 – 18524Helical; Name=IIUniRule annotationAdd
BLAST
Transmembranei201 – 22525Helical; Name=IIIUniRule annotationAdd
BLAST
Transmembranei309 – 32719Helical; Name=IVUniRule annotationAdd
BLAST
Transmembranei368 – 39124Helical; Name=VUniRule annotationAdd
BLAST
Transmembranei407 – 43327Helical; Name=VIUniRule annotationAdd
BLAST
Transmembranei455 – 47723Helical; Name=VIIUniRule annotationAdd
BLAST
Transmembranei551 – 56919Helical; Name=VIIIUniRule annotationAdd
BLAST
Transmembranei609 – 63022Helical; Name=IXUniRule annotationAdd
BLAST
Transmembranei674 – 69623Helical; Name=XUniRule annotationAdd
BLAST
Transmembranei734 – 75421Helical; Name=XIUniRule annotationAdd
BLAST

Family & Domainsi

Sequence similaritiesi

Belongs to the PsaA/PsaB family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiNOG05023.
HOGENOMiHOG000276868.
KOiK02689.
OMAiTWAFFHA.
OrthoDBiEOG60W7PS.

Family and domain databases

Gene3Di1.20.1130.10. 1 hit.
HAMAPiMF_00458. PSI_PsaA.
InterProiIPR006243. PSI_PsaA.
IPR001280. PSI_PsaA/B.
IPR020586. PSI_PsaA/B_CS.
[Graphical view]
PfamiPF00223. PsaA_PsaB. 1 hit.
[Graphical view]
PIRSFiPIRSF002905. PSI_A. 1 hit.
PRINTSiPR00257. PHOTSYSPSAAB.
SUPFAMiSSF81558. SSF81558. 1 hit.
TIGRFAMsiTIGR01335. psaA. 1 hit.
PROSITEiPS00419. PHOTOSYSTEM_I_PSAAB. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

A2BYP9-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MTISPPESGE KDKKILESPV KADPRPIDFA KLDKPGFWSS KLSKGPKTTT
60 70 80 90 100
WIWNLHADAH DFDVHTGDAE EATRKIFSAH FGHLAVIFIW MSAAFFHGAR
110 120 130 140 150
FSNYSGWLAD PTHVKPGAQQ VWAIVGQEML NGDLGANYNG IQISSGVFHM
160 170 180 190 200
WRAWGITNES ELMALAIGAV VMAALMLHAG IFHYHKAAPK MEWFQDVESM
210 220 230 240 250
MNHHLAGLLG LGSLAWAGHT IHIGAPTAAL LDAIDAGSPL IINGKEIATI
260 270 280 290 300
ADIPMPHQLC DPQIVGQIFP GLASGTGNFF SLNWFAFSDF LTFKGGLNPV
310 320 330 340 350
TGSLWMTDIA HHHLAIAVLF IIAGHMYRTN YGIGHSMKEI LDAHQGDPIL
360 370 380 390 400
FPAPRGHQGL FDFMAESRHA QLSVNLALLG SLSIIISHHM YAMPPYPYIA
410 420 430 440 450
TDYMTVLGLF THHMWIGGLF IVGAGAHAGI AMVRDYDPAK HIDNVLDRVL
460 470 480 490 500
KARDALISHL NWVCMWLGFH SFGLYIHNDT MRALGRPQDM FSDKAIQLQP
510 520 530 540 550
IFAQWIQNIQ SSGVGTTLLE GNGVSQVFNG ETISVGGKVA MTGIPLGTAD
560 570 580 590 600
LMIHHIHAFQ IHVTVLILLK GVLYARSSRL IPDKASLGFR FPCDGPGRGG
610 620 630 640 650
TCQVSSWDHV FLALFWMYNC LSIVIFHFSW KMQSDVWGLT GGNFAQSAIT
660 670 680 690 700
INGWLRDFLW AQAAQVLTSY GQSISMYGLM FLGAHFIWAF SLMFLFSGRG
710 720 730 740 750
YWQELFESIV WAHNKLKVAP TIQPRALSIT QGRAVGVTHF LVGGIATTWA
760
FFHARLFGIG
Length:760
Mass (Da):83,716
Last modified:February 20, 2007 - v1
Checksum:iE73A0882B41063EC
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
CP000552 Genomic DNA. Translation: ABM72910.1.
RefSeqiWP_011821002.1. NC_008817.1.
YP_001012017.1. NC_008817.1.

Genome annotation databases

EnsemblBacteriaiABM72910; ABM72910; P9515_17031.
GeneIDi4720212.
KEGGipmc:P9515_17031.
PATRICi23017078. VBIProMar113831_1751.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
CP000552 Genomic DNA. Translation: ABM72910.1 .
RefSeqi WP_011821002.1. NC_008817.1.
YP_001012017.1. NC_008817.1.

3D structure databases

ProteinModelPortali A2BYP9.
SMRi A2BYP9. Positions 20-760.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 167542.P9515_17031.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai ABM72910 ; ABM72910 ; P9515_17031 .
GeneIDi 4720212.
KEGGi pmc:P9515_17031.
PATRICi 23017078. VBIProMar113831_1751.

Phylogenomic databases

eggNOGi NOG05023.
HOGENOMi HOG000276868.
KOi K02689.
OMAi TWAFFHA.
OrthoDBi EOG60W7PS.

Enzyme and pathway databases

BioCyci PMAR167542:GI3N-1751-MONOMER.

Family and domain databases

Gene3Di 1.20.1130.10. 1 hit.
HAMAPi MF_00458. PSI_PsaA.
InterProi IPR006243. PSI_PsaA.
IPR001280. PSI_PsaA/B.
IPR020586. PSI_PsaA/B_CS.
[Graphical view ]
Pfami PF00223. PsaA_PsaB. 1 hit.
[Graphical view ]
PIRSFi PIRSF002905. PSI_A. 1 hit.
PRINTSi PR00257. PHOTSYSPSAAB.
SUPFAMi SSF81558. SSF81558. 1 hit.
TIGRFAMsi TIGR01335. psaA. 1 hit.
PROSITEi PS00419. PHOTOSYSTEM_I_PSAAB. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: MIT 9515.

Entry informationi

Entry nameiPSAA_PROM5
AccessioniPrimary (citable) accession number: A2BYP9
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 10, 2007
Last sequence update: February 20, 2007
Last modified: October 29, 2014
This is version 58 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3