Photosystem Q(B) protein precursor - Prochlorococcus marinus (strain MIT 9303)

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A2C6Q1 (PSBA_PROM3) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 54. History...

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

Documents (1) |

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 Q(B) protein
EC=1.10.3.9

Alternative name(s):
32 kDa thylakoid membrane protein
Photosystem II protein D1

Gene names

Name:	psbA1
Ordered Locus Names:	P9303_04091
AND
Name:	psbA2
Ordered Locus Names:	P9303_18681

Organism

Prochlorococcus marinus (strain MIT 9303) [Complete proteome] [HAMAP]

Taxonomic identifier

59922 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Prochlorales › Prochlorococcaceae › Prochlorococcus ›

Protein attributes

Sequence length	358 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology

General annotation (Comments)

Function	This is one of the two reaction center proteins of photosystem II By similarity. HAMAP-Rule MF_01379
Catalytic activity	2 H₂O + 2 plastoquinone + 4 light = O₂ + 2 plastoquinol. HAMAP-Rule MF_01379
Cofactor	The PsbA/B heterodimer binds P680, the primary electron donor of PSII. It shares a non-heme iron and each subunit binds additional chlorophylls and pheophytin. PsbA provides most of the ligands for the Mn-cluster of the oxygen-evolving complex By similarity.
Subunit structure	The PsbA/B heterodimer binds the P680 chlorophylls and subsequent electron acceptors. PSII consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation. PSII forms dimeric complexes By similarity.
Subcellular location	Cellular thylakoid membrane; Multi-pass membrane protein By similarity HAMAP-Rule MF_01379.
Miscellaneous	Herbicides such as atrazine, BNT, diuron or ioxynil bind to Q(B) and block electron transport By similarity. HAMAP-Rule MF_01379 Cyanobacteria usually contain more than 2 copies of the psbA gene. HAMAP-Rule MF_01379
Sequence similarities	Belongs to the reaction center PufL/M/PsbA/D family.

Ontologies

Keywords
Biological process	Electron transport Herbicide resistance Photosynthesis Transport
Cellular component	Membrane Photosystem II Thylakoid
Domain	Transmembrane Transmembrane helix
Ligand	Iron Metal-binding
Molecular function	Oxidoreductase
Technical term	Complete proteome
Gene Ontology (GO)
Biological_process	photosynthetic electron transport in photosystem II Inferred from electronic annotation. Source: InterPro response to herbicide Inferred from electronic annotation. Source: UniProtKB-KW
Cellular_component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW light-harvesting complex Inferred from electronic annotation. Source: InterPro photosystem II Inferred from electronic annotation. Source: UniProtKB-KW thylakoid membrane Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular_function	electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity Inferred from electronic annotation. Source: InterPro iron 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 – 343

343

Photosystem Q(B) protein HAMAP-Rule MF_01379

PRO_0000316359

Propeptide

344 – 358

Potential

PRO_0000316360

Regions

Transmembrane

35 – 55

Helical; Potential

Transmembrane

108 – 128

Helical; Potential

Transmembrane

140 – 163

Helical; Potential

Transmembrane

191 – 217

Helical; Potential

Transmembrane

268 – 288

Helical; Potential

Sites

Metal binding

214

Iron; shared with heterodimeric partner By similarity

Metal binding

271

Iron; shared with heterodimeric partner By similarity

Site

343 – 344

Cleavage; by CtpA By similarity

Sequences

Sequence

Length

Mass (Da)

Tools

A2C6Q1 [UniParc].

Last modified February 20, 2007. Version 1.
Checksum: DADC843F3EE9EBE4
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FASTA

358

39,442

        10         20         30         40         50         60 
MTTTIRSGRL SSWESFCNWV TSTNNRIYVG WFGVLMVPTL LAAAICFTIA FIAAPPVDID 

        70         80         90        100        110        120 
GIREPVAGSF LYGNNIISGA VVPSSNAIGL HFYPIWEAAS VDEWLYNGGP YQLVVFHFLI 

       130        140        150        160        170        180 
GICCWLGRQW ELSYRLGMRP WICVAYSAPL SAAFAVFLIY PVGQGSFSDG MPLGISGTFN 

       190        200        210        220        230        240 
FMLVFQAEHN ILMHPFHMIG VAGMFGGSLF SAMHGSLVTS SLIRETTETE SQNYGYKFGQ 

       250        260        270        280        290        300 
EEETYNIVAA HGYFGRLIFQ YASFNNSRSL HFFLAAWPVI CIWITSLGIS TMAFNLNGFN 

       310        320        330        340        350 
FNQSVLDAQG RVVPTWADVL NRSNLGMEVM HERNAHNFPL DLAAAESTPV ALIAPAIG

« Hide

References

[1]

"Patterns and implications of gene gain and loss in the evolution of Prochlorococcus."
Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S., Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M., Richardson P., Chisholm S.W.
PLoS Genet. 3:2515-2528(2007) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: MIT 9303.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000554 Genomic DNA. Translation: ABM77161.1. CP000554 Genomic DNA. Translation: ABM78610.1.
RefSeq	YP_001016426.1. NC_008820.1. YP_001017875.1. NC_008820.1.
3D structure databases
ProteinModelPortal	A2C6Q1.
SMR	A2C6Q1. Positions 13-343.
ModBase	Search...
Protein-protein interaction databases
STRING	59922.P9303_18681.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	ABM77161; ABM77161; P9303_04091. ABM78610; ABM78610; P9303_18681.
GeneID	4777504. 4777705.
KEGG	pmf:P9303_04091. pmf:P9303_18681.
PATRIC	22998231. VBIProMar17757_0440.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	NOG04871.
HOGENOM	HOG000246913.
KO	K02703.
OMA	CFTIAFI.
ProtClustDB	CLSK892431.
Enzyme and pathway databases
BioCyc	PMAR59922:GH54-1968-MONOMER. PMAR59922:GH54-467-MONOMER.
Family and domain databases
Gene3D	1.20.85.10. 1 hit.
HAMAP	MF_01379. PSII_PsbA_D1.
InterPro	IPR000484. Photo_RC_L/M. IPR005867. PSII_D1. [Graphical view]
Pfam	PF00124. Photo_RC. 1 hit. [Graphical view]
PRINTS	PR00256. REACTNCENTRE.
SUPFAM	SSF81483. Photo_RC_L/M. 1 hit.
TIGRFAMs	TIGR01151. psbA. 1 hit.
PROSITE	PS00244. REACTION_CENTER. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

PSBA_PROM3

Accession

Primary (citable) accession number: A2C6Q1

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 5, 2008
Last sequence update:	February 20, 2007
Last modified:	May 1, 2013
This is version 54 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program

Relevant documents

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

Protein-protein interaction databases

Protocols and materials databases

Genome annotation databases

Organism-specific databases

Phylogenomic databases

Enzyme and pathway databases

Family and domain databases

Entry information

Relevant documents