Photosystem I P700 chlorophyll a apoprotein A2 - Oryza sativa subsp. japonica (Rice)

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P0C358 (PSAB_ORYSJ) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 45. History...

Clusters with 100%, 90%, 50% identity |

Documents (2) |

Third-party data

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Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·Documents Customize order

Names and origin

Protein names

Recommended name:
Photosystem I P700 chlorophyll a apoprotein A2
EC=1.97.1.12

Alternative name(s):
PSI-B
PsaB

Gene names

Name:	psaB
ORF Names:	Nip049

Encoded on

Plastid; Chloroplast

Organism

Oryza sativa subsp. japonica (Rice) [Reference proteome]

Taxonomic identifier

39947 [NCBI]

Taxonomic lineage

Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › Liliopsida › Poales › Poaceae › BEP clade › Ehrhartoideae › Oryzeae › Oryza ›

Protein attributes

Sequence length	734 AA.
Sequence status	Complete.
Protein existence	Evidence at transcript level

General annotation (Comments)

Function	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 By similarity. HAMAP-Rule MF_00482
Catalytic activity	Reduced plastocyanin + oxidized ferredoxin + light = oxidized plastocyanin + reduced ferredoxin. HAMAP-Rule MF_00482
Cofactor	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 By similarity.
Subunit structure	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 By similarity.
Subcellular location	Plastid › chloroplast thylakoid membrane; Multi-pass membrane protein By similarity HAMAP-Rule MF_00482.
Sequence similarities	Belongs to the PsaA/PsaB family.
Sequence caution	The sequence AAS46120.1 differs from that shown. Reason: Erroneous initiation.

Ontologies

Keywords
Biological process	Electron transport Photosynthesis Transport
Cellular component	Chloroplast Membrane Photosystem I Plastid Thylakoid
Domain	Transmembrane Transmembrane helix
Ligand	4Fe-4S Chlorophyll Chromophore Iron Iron-sulfur Magnesium Metal-binding
Molecular function	Oxidoreductase
Technical term	Complete proteome Reference proteome
Gene Ontology (GO)
Biological_process	electron transport chain Inferred from electronic annotation. Source: UniProtKB-KW photosynthesis Inferred from electronic annotation. Source: HAMAP protein-chromophore linkage Inferred from electronic annotation. Source: UniProtKB-KW
Cellular_component	chloroplast thylakoid membrane Inferred from electronic annotation. Source: UniProtKB-SubCell integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW photosystem I Inferred from electronic annotation. Source: UniProtKB-KW plastid Inferred by curator PubMed 12520024. Source: Gramene plastoglobule Inferred from electronic annotation. Source: EnsemblPlants/Gramene
Molecular_function	4 iron, 4 sulfur cluster binding Inferred from electronic annotation. Source: UniProtKB-KW chlorophyll binding Inferred from electronic annotation. Source: UniProtKB-KW electron carrier activity Inferred from electronic annotation. Source: HAMAP magnesium ion binding Inferred from electronic annotation. Source: HAMAP oxidoreductase activity Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Feature identifier

Molecule processing

Chain

1 – 734

734

Photosystem I P700 chlorophyll a apoprotein A2 HAMAP-Rule MF_00482

PRO_0000288985

Regions

Transmembrane

46 – 69

Helical; Name=I; Potential

Transmembrane

135 – 158

Helical; Name=II; Potential

Transmembrane

175 – 199

Helical; Name=III; Potential

Transmembrane

273 – 291

Helical; Name=IV; Potential

Transmembrane

330 – 353

Helical; Name=V; Potential

Transmembrane

369 – 395

Helical; Name=VI; Potential

Transmembrane

417 – 439

Helical; Name=VII; Potential

Transmembrane

517 – 535

Helical; Name=VIII; Potential

Transmembrane

575 – 596

Helical; Name=IX; Potential

Transmembrane

643 – 665

Helical; Name=X; Potential

Transmembrane

707 – 727

Helical; Name=XI; Potential

Sites

Metal binding

559

Iron-sulfur (4Fe-4S); shared with dimeric partner By similarity

Metal binding

568

Iron-sulfur (4Fe-4S); shared with dimeric partner By similarity

Metal binding

654

Magnesium (chlorophyll-a B1 axial ligand; P700 special pair) By similarity

Metal binding

662

Magnesium (chlorophyll-a B3 axial ligand) By similarity

Binding site

670

Chlorophyll-a B3 By similarity

Binding site

671

Phylloquinone B By similarity

Sequences

Sequence

Length

Mass (Da)

Tools

P0C358 [UniParc].

Last modified May 29, 2007. Version 1.
Checksum: F29CDFFEC03CD9F8
Show »

FASTA

734

82,560

        10         20         30         40         50         60 
MELRFPRFSQ GLAQDPTTRR IWFGIATAHD FESHDDITEE RLYQNIFASH FGQLAIIFLW 

        70         80         90        100        110        120 
TSGNLFHVAW QGNFESWIQD PLHVRPIAHA IWDPHFGQPA VEAFTRGGAA GPVNIAYSGV 

       130        140        150        160        170        180 
YQWWYTIGLR TNEDLYTGAL FLLFLSTLSL IGGWLHLQPK WKPSLSWFKN AESRLNHHLS 

       190        200        210        220        230        240 
GLFGVSSLAW TGHLVHVAIP ASRGEYVRWN NFLDVLPYPQ GLGPLLTGQW NLYAQNPDSS 

       250        260        270        280        290        300 
NHLFGTTQGA GTAILTLLGG FHPQTQSLWL TDIAHHHLAI AFIFLIAGHM YRTNFGIGHS 

       310        320        330        340        350        360 
IKDLLEAHTP PGGRLGRGHK GLYDTINNSI HFQLGLALAS LGVITSLVAQ HMYSLPSYAF 

       370        380        390        400        410        420 
IAQDFTTQAA LYTHHQYIAG FIMTGAFAHG AIFFIRDYNP EQNEDNVLAR MLDHKEAIIS 

       430        440        450        460        470        480 
HLSWASLFLG FHTLGLYVHN DVMLAFGTPE KQILIEPIFA QWIQSAHGKT TYGFDILLSS 

       490        500        510        520        530        540 
TSGPAFNAGR TLWLPGWLNA VNENSNSLFL TIGPGDFLVH HAIALGLHTT TLILVKGALD 

       550        560        570        580        590        600 
ARGSKLMPDK KDFGYSFPCD GPGRGGTCDI SAWDAFYLAV FWMLNTIGWV TFYWHWKHIT 

       610        620        630        640        650        660 
LWQGNVSQFN ESSTYLMGWL RDYLWLNSSQ LINGYNPFGM NSLSVWAWMF LFGHLVWATG 

       670        680        690        700        710        720 
FMFLISWRGY WQELIETLAW AHERTPLANL IRWRDKPVAL SIVQARLVGL AHFSVGYIFT 

       730 
YAAFLIASTS GKFG

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References

[1]

"The complete sequence of the rice (Oryza sativa) chloroplast genome: intermolecular recombination between distinct tRNA genes accounts for a major plastid DNA inversion during the evolution of the cereals."
Hiratsuka J., Shimada H., Whittier R., Ishibashi T., Sakamoto M., Mori M., Kondo C., Honji Y., Sun C.-R., Meng B.-Y., Li Y.-Q., Kanno A., Nishizawa Y., Hirai A., Shinozaki K., Sugiura M.
Mol. Gen. Genet. 217:185-194(1989) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: cv. Nipponbare.

[2]

"A comparison of rice chloroplast genomes."
Tang J., Xia H., Cao M., Zhang X., Zeng W., Hu S., Tong W., Wang J., Wang J., Yu J., Yang H., Zhu L.
Plant Physiol. 135:412-420(2004) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: cv. Nipponbare.

Cross-references

Sequence databases
EMBL GenBank DDBJ	X15901 Genomic DNA. Translation: CAA33995.1. AY522330 Genomic DNA. Translation: AAS46120.1. Different initiation.
PIR	A2RZP7. JQ0222.
RefSeq	NP_039382.1. NC_001320.1.
3D structure databases
ProteinModelPortal	P0C358.
SMR	P0C358. Positions 3-733.
ModBase	Search...
Proteomic databases
PaxDb	P0C358.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblPlants	LOC_Osp1g00330.1; LOC_Osp1g00330.1; LOC_Osp1g00330.
GeneID	3131407.
KEGG	osa:3131407.
Organism-specific databases
Gramene	P0C358.
Phylogenomic databases
eggNOG	NOG04867.
KO	K02690.
OMA	AQFNESS.
ProtClustDB	CHL00054.
Gene expression databases
ArrayExpress	P0C358.
Family and domain databases
Gene3D	1.20.1130.10. 1 hit.
HAMAP	MF_00482. PSI_PsaB.
InterPro	IPR001280. PSI_PsaA/B. IPR020586. PSI_PsaA/B_CS. IPR006244. PSI_PsaB. [Graphical view]
Pfam	PF00223. PsaA_PsaB. 1 hit. [Graphical view]
PIRSF	PIRSF002905. PSI_A. 1 hit.
PRINTS	PR00257. PHOTSYSPSAAB.
TIGRFAMs	TIGR01336. psaB. 1 hit.
PROSITE	PS00419. PHOTOSYSTEM_I_PSAAB. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

PSAB_ORYSJ

Accession

Primary (citable) accession number: P0C358
Secondary accession number(s): P12156, Q6QXU8, Q6QY75

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 29, 2007
Last sequence update:	May 29, 2007
Last modified:	May 1, 2013
This is version 45 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program

Relevant documents

Oryza sativa (rice)

Index of Oryza sativa entries and their corresponding gene designations

SIMILARITY comments

Index of protein domains and families

Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·Documents

Preferred order of sections

Names and origin

Protein attributes

General annotation (Comments)

Ontologies

Sequence annotation (Features)

Molecule processing

Regions

Sites

Sequences

References

Cross-references

Sequence databases

3D structure databases

Proteomic databases

Protocols and materials databases

Genome annotation databases

Organism-specific databases

Phylogenomic databases

Gene expression databases

Family and domain databases

Entry information

Relevant documents