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A0ZZ35

- PSAA_GOSBA

UniProt

A0ZZ35 - PSAA_GOSBA

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Protein

Photosystem I P700 chlorophyll a apoprotein A1

Gene

psaA

Organism
Gossypium barbadense (Sea-island cotton) (Egyptian cotton)
Status
Reviewed - Annotation score: 4 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-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.

Catalytic activityi

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

Cofactori

P700 is a chlorophyll a/chlorophyll a' dimer, A0 is one or more 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 bindingi573 – 5731Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
Metal bindingi582 – 5821Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
Metal bindingi675 – 6751Magnesium (chlorophyll-a' A1 axial ligand; P700 special pair)UniRule annotation
Metal bindingi683 – 6831Magnesium (chlorophyll-a A3 axial ligand)UniRule annotation
Binding sitei691 – 6911Chlorophyll-a A3UniRule annotation
Binding sitei692 – 6921Phylloquinone 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

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem I P700 chlorophyll a apoprotein A1UniRule annotation (EC:1.97.1.12UniRule annotation)
Alternative name(s):
PSI-AUniRule annotation
PsaAUniRule annotation
Gene namesi
Name:psaAUniRule annotation
Encoded oniPlastid; Chloroplast
OrganismiGossypium barbadense (Sea-island cotton) (Egyptian cotton)
Taxonomic identifieri3634 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsMalvalesMalvaceaeMalvoideaeGossypium

Subcellular locationi

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

GO - Cellular componenti

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

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem I, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 750750Photosystem I P700 chlorophyll a apoprotein A1PRO_0000275945Add
BLAST

Interactioni

Subunit structurei

The PsaA/B heterodimer binds the P700 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 eukaryotic PSI reaction center is composed of at least 11 subunits.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliA0ZZ35.
SMRiA0ZZ35. Positions 23-750.
ModBaseiSearch...
MobiDBiSearch...

Transmembrane

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei70 – 9324Helical; Name=IUniRule annotationAdd
BLAST
Transmembranei156 – 17924Helical; Name=IIUniRule annotationAdd
BLAST
Transmembranei195 – 21925Helical; Name=IIIUniRule annotationAdd
BLAST
Transmembranei291 – 30919Helical; Name=IVUniRule annotationAdd
BLAST
Transmembranei346 – 36924Helical; Name=VUniRule annotationAdd
BLAST
Transmembranei385 – 41127Helical; Name=VIUniRule annotationAdd
BLAST
Transmembranei433 – 45523Helical; Name=VIIUniRule annotationAdd
BLAST
Transmembranei531 – 54919Helical; Name=VIIIUniRule annotationAdd
BLAST
Transmembranei589 – 61022Helical; Name=IXUniRule annotationAdd
BLAST
Transmembranei664 – 68623Helical; Name=XUniRule annotationAdd
BLAST
Transmembranei724 – 74421Helical; Name=XIUniRule annotationAdd
BLAST

Family & Domainsi

Sequence similaritiesi

Belongs to the PsaA/PsaB family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

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.

A0ZZ35-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MIIRSPEPEV KILVDRDPVK TSFEEWARPG HFSRTIAKGP DTTTWIWNLH
60 70 80 90 100
ADAHDFDSHT SDLEEISRKI FSAHFGQLSI IFLWLSGMYF HGARFSNYEA
110 120 130 140 150
WLSDPTHIGP SAQVVWPIVG QEILNGDVGG GFRGIQITSG FFQIWRASGI
160 170 180 190 200
TSELQLYCTA IGALVFAALM LFAGWFHYHK AAPKLAWFQD VESMLNHHLA
210 220 230 240 250
GLLGLGSLSW AGHQVHVSLP INQFLNAGVD PKEIPLPHEF ILNRDLLAQL
260 270 280 290 300
YPSFAEGATP FFTLNWSKYA EFLTFRGGLD PVTGGLWLTD IAHHHLAIAI
310 320 330 340 350
LFLIAGHMYK TNWGIGHSLN DILEAHKGPF TGQGHKGLYE ILTTSWHAQL
360 370 380 390 400
SLNLAMLGSL TIVVAHHMYS MPPYPYLATD YGTQLSLFTH HMWIGGFLIV
410 420 430 440 450
GAAAHAAIFM VRDYDPTTRY NDLLDRVLRH RDAIISHLNW VCIFLGFHSF
460 470 480 490 500
GLYIHNDTMS ALGRPQDMFS DTAIQLQPVF AQWIQNTHTL APGATAPGAT
510 520 530 540 550
ASTSLTWGGG DLVAVGGKVA LLPIPLGTAD FLVHHIHAFT IHVTVLILLK
560 570 580 590 600
GVLFARSSRL IPDKANLGFR FPCDGPGRGG TCQVSAWDHV FLGLFWMYNS
610 620 630 640 650
ISVVIFHFSW KMQSDVWGTI SDQGVVTHIT GGNFAQSSIT INGWLRDFLW
660 670 680 690 700
AQASQVIQSY GSSLSAYGLL FLGAHFVWAF SLMFLFSGRG YWQELIESIV
710 720 730 740 750
WAHNKLKVAP ATQPRALSIV QGRAVGVTHY LLGGIATTWA FFLARIIAVG
Length:750
Mass (Da):83,102
Last modified:January 23, 2007 - v1
Checksum:i530D1053DB369542
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AP009123 Genomic DNA. Translation: BAF41247.1.
RefSeqiYP_913187.1. NC_008641.1.

Genome annotation databases

GeneIDi4575211.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AP009123 Genomic DNA. Translation: BAF41247.1 .
RefSeqi YP_913187.1. NC_008641.1.

3D structure databases

ProteinModelPortali A0ZZ35.
SMRi A0ZZ35. Positions 23-750.
ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

GeneIDi 4575211.

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. "Complete nucleotide sequence of the cotton (Gossypium barbadense L.) chloroplast genome with a comparative analysis of sequences among 9 dicot plants."
    Ibrahim R.I.H., Azuma J., Sakamoto M.
    Genes Genet. Syst. 81:311-321(2006) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Entry informationi

Entry nameiPSAA_GOSBA
AccessioniPrimary (citable) accession number: A0ZZ35
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 6, 2007
Last sequence update: January 23, 2007
Last modified: October 29, 2014
This is version 38 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3