SubmitCancel

Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.

A2C4V3

- PSAA_PROM1

UniProt

A2C4V3 - PSAA_PROM1

(max 400 entries)x

Your basket is currently empty.

Select item(s) and click on "Add to basket" to create your own collection here
(400 entries max)

Protein
Photosystem I P700 chlorophyll a apoprotein A1
Gene
psaA, NATL1_19571
Organism
Prochlorococcus marinus (strain NATL1A)
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 By similarity.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 By similarity.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi601 – 6011Iron-sulfur (4Fe-4S); shared with dimeric partner By similarity
Metal bindingi610 – 6101Iron-sulfur (4Fe-4S); shared with dimeric partner By similarity
Metal bindingi693 – 6931Magnesium (divinyl chlorophyll-a' A1 axial ligand; P700 special pair) By similarity
Metal bindingi701 – 7011Magnesium (divinyl chlorophyll-a A3 axial ligand) By similarity
Binding sitei709 – 7091Divinyl chlorophyll-a A3 By similarity
Binding sitei710 – 7101Phylloquinone A By similarity

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

BioCyciPMAR167555:GI3K-1998-MONOMER.

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem I P700 chlorophyll a apoprotein A1 (EC:1.97.1.12)
Alternative name(s):
PsaA
Gene namesi
Name:psaA
Ordered Locus Names:NATL1_19571
OrganismiProchlorococcus marinus (strain NATL1A)
Taxonomic identifieri167555 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus
ProteomesiUP000002592: Chromosome

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei76 – 9924Helical; Name=I; Reviewed prediction
Add
BLAST
Transmembranei162 – 18524Helical; Name=II; Reviewed prediction
Add
BLAST
Transmembranei201 – 22525Helical; Name=III; Reviewed prediction
Add
BLAST
Transmembranei310 – 32819Helical; Name=IV; Reviewed prediction
Add
BLAST
Transmembranei369 – 39224Helical; Name=V; Reviewed prediction
Add
BLAST
Transmembranei408 – 43427Helical; Name=VI; Reviewed prediction
Add
BLAST
Transmembranei456 – 47823Helical; Name=VII; Reviewed prediction
Add
BLAST
Transmembranei559 – 57719Helical; Name=VIII; Reviewed prediction
Add
BLAST
Transmembranei617 – 63822Helical; Name=IX; Reviewed prediction
Add
BLAST
Transmembranei682 – 70423Helical; Name=X; Reviewed prediction
Add
BLAST
Transmembranei742 – 76221Helical; Name=XI; Reviewed prediction
Add
BLAST

GO - Cellular componenti

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

Keywords - Cellular componenti

Membrane, Photosystem I, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 768768Photosystem I P700 chlorophyll a apoprotein A1UniRule annotation
PRO_0000294204Add
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 By similarity.

Protein-protein interaction databases

STRINGi167555.NATL1_19571.

Structurei

3D structure databases

ProteinModelPortaliA2C4V3.
SMRiA2C4V3. Positions 20-768.

Family & Domainsi

Sequence similaritiesi

Belongs to the PsaA/PsaB family.

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.

A2C4V3-1 [UniParc]FASTAAdd to Basket

« Hide

MTISPPEKEQ KKEPVLDKPI ETDAIPVDFS KLDKPGFWSK SLAKGPKTTT    50
WIWNLHADAH DFDTHVGDLQ ETSRKVFSAH FGHLAVIFIW MSAAFFHGAR 100
FSNYSGWLSD PTHVKPGAQV VWPIVGQEML NADLGGNYHG IQITSGIFQM 150
WRGWGITNET ELMALAIGAL LMAAIMLHGG IYHYHKAAPK LDWFRNLESM 200
LNHHIAGLVG LGSIAWAGHC IHIGAPTAAL MDAIDAGKPL IIDGIPIASI 250
ADMPLPHELC NPAIASQIFP GLAGRTVENF FTTNWWAFSD FLTFKGGLNP 300
VTGSLWMTDI SHHHLAFGVL AVLGGHLYRT MFGIGHSLKE ILDNHAGDPI 350
LFPAPNGHKG IYEFLANSWH AQLGLNLAMI GSLSIIISHH MYAMPPYPYL 400
SIDYPTVLGL FTHHMWIGGL FIVGAAAHAG IAMIRDYDPA VHIDNVLDRI 450
LKARDALISH LNWACMFLGF HSFGLYIHND VMRALGRPAD MFSDTGIQLQ 500
PVFAQWIQNI HNSAAGSTTL AGANVNLQPG LVSEVFNGSV SQVGGKIGIA 550
PIPLGTADFM IHHIHAFTIH VTLLILLKGV LFARSSRLIP DKANLGFRFP 600
CDGPGRGGTC QVSSWDHVFL GLFWMYNGLS VVIFHFSWKM QSDVWGLTGG 650
NFAQSSITIN GWLRDFLWAQ SSQVLTSYGQ PISMYGLMFL GAHFVWAFSL 700
MFLFSGRGYW QELFESIIWA HNKLNLAPTI QPRALSITQG RAVGAAHFLL 750
GGIATTWAFF HARLIGLG 768
Length:768
Mass (Da):84,390
Last modified:February 20, 2007 - v1
Checksum:i5F51B544D4E4471E
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
CP000553 Genomic DNA. Translation: ABM76513.1.
RefSeqiWP_011824482.1. NC_008819.1.
YP_001015777.1. NC_008819.1.

Genome annotation databases

EnsemblBacteriaiABM76513; ABM76513; NATL1_19571.
GeneIDi4779260.
KEGGipme:NATL1_19571.
PATRICi23021569. VBIProMar31285_1998.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
CP000553 Genomic DNA. Translation: ABM76513.1 .
RefSeqi WP_011824482.1. NC_008819.1.
YP_001015777.1. NC_008819.1.

3D structure databases

ProteinModelPortali A2C4V3.
SMRi A2C4V3. Positions 20-768.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 167555.NATL1_19571.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai ABM76513 ; ABM76513 ; NATL1_19571 .
GeneIDi 4779260.
KEGGi pme:NATL1_19571.
PATRICi 23021569. VBIProMar31285_1998.

Phylogenomic databases

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

Enzyme and pathway databases

BioCyci PMAR167555:GI3K-1998-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: NATL1A.

Entry informationi

Entry nameiPSAA_PROM1
AccessioniPrimary (citable) accession number: A2C4V3
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 10, 2007
Last sequence update: February 20, 2007
Last modified: September 3, 2014
This is version 57 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

Similar proteinsi