Photosystem Q(B) protein 1 precursor - Synechocystis sp. (strain PCC 6803 / Kazusa)

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P07826 (PSBA1_SYNY3) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 110. 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 Q(B) protein 1
EC=1.10.3.9

Alternative name(s):
32 kDa thylakoid membrane protein 1
Photosystem II protein D1 1

Gene names

Name:	psbA1
Synonyms:	psbA-1
Ordered Locus Names:	slr1181

Organism

Synechocystis sp. (strain PCC 6803 / Kazusa) [Reference proteome] [HAMAP]

Taxonomic identifier

1111708 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Oscillatoriophycideae › Chroococcales › Synechocystis ›

Protein attributes

Sequence length	360 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level

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 Reference 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 – 344

344

Photosystem Q(B) protein 1 HAMAP-Rule MF_01379

PRO_0000090492

Propeptide

345 – 360

Potential

PRO_0000316428

Regions

Transmembrane

36 – 56

Helical; Potential

Transmembrane

109 – 129

Helical; Potential

Transmembrane

141 – 164

Helical; Potential

Transmembrane

192 – 218

Helical; Potential

Transmembrane

269 – 289

Helical; Potential

Sites

Metal binding

215

Iron; shared with heterodimeric partner By similarity

Metal binding

272

Iron; shared with heterodimeric partner By similarity

Site

344 – 345

Cleavage; by CtpA By similarity

Experimental info

Sequence conflict

G → A in CAA68778. Ref.1

Sequence conflict

115

I → N in CAA68778. Ref.1

Sequence conflict

273

F → S in CAA68778. Ref.1

Sequences

Sequence

Length

Mass (Da)

Tools

P07826 [UniParc].

Last modified November 1, 1997. Version 3.
Checksum: 41A74A7819FE90D2
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FASTA

360

39,651

        10         20         30         40         50         60 
MTTTQLGLQE QSLWSRFCCW ITSTSNRLYI GWFGVLMIPT LLTATTCFII AFIAAPPVDI 

        70         80         90        100        110        120 
DGIREPIAGS LLYGNNIITA AVVPSSNAIG LHFYPIWEAH SLDEWLYNGG PYQLIVFHFL 

       130        140        150        160        170        180 
IGIFCYLGRQ WELSYRLGMR PWICVAYSAP VAAATATLLI YSIGQGSFSD GLPLGISGTF 

       190        200        210        220        230        240 
NFMLVLQAEH NVLMHPFHML GVAGVFGGAL FAAMHGSLVT SSLIRETTEV ESQNQGYKFG 

       250        260        270        280        290        300 
QEEETYNIVA AHGYFGRLIF QYASFNNSRA LHFFLGAWPV VGIWFAALAV CCFAFNLNGF 

       310        320        330        340        350        360 
NFNQSILDAQ GRPVSTWADV INRANIGFEV MHERNVHNFP LDLASGDAQM VALNAPAIEG

« Hide

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Nucleotide sequence of a member of the psbA multigene family from the unicellular cyanobacterium Synechocystis 6803." Osiewacz H.D., McIntosh L. Nucleic Acids Res. 15:10585-10585(1987) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Sequence analysis of the genome of the unicellular cyanobacterium Synechocystis sp. strain PCC6803. II. Sequence determination of the entire genome and assignment of potential protein-coding regions." Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y., Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T., Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S. Tabata S. DNA Res. 3:109-136(1996) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: PCC 6803 / Kazusa.
[3]	"Thylakoid protein phosphorylation in evolutionally divergent species with oxygenic photosynthesis." Pursiheimo S., Rintamaeki E., Baena-Gonzalez E., Aro E.-M. FEBS Lett. 423:178-182(1998) [PubMed] [Europe PMC] [Abstract] Cited for: ABSENCE OF PHOSPHORYLATION.

Cross-references

Sequence databases
EMBL GenBank DDBJ	Y00885 Genomic DNA. Translation: CAA68778.1. BA000022 Genomic DNA. Translation: BAA18829.1.
PIR	F2YB13. S76917.
RefSeq	NP_443017.1. NC_000911.1. YP_005653076.1. NC_017277.1. YP_007452892.1. NC_020286.1.
3D structure databases
ProteinModelPortal	P07826.
SMR	P07826. Positions 12-344.
ModBase	Search...
Protein-protein interaction databases
IntAct	P07826. 2 interactions.
STRING	1148.slr1181.
Proteomic databases
PaxDb	P07826.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	BAA18829; BAA18829; BAA18829.
GeneID	12255607. 14618584. 951901.
KEGG	syn:slr1181. syy:SYNGTS_3123.
PATRIC	23843888. VBISynSp132158_3474.
Phylogenomic databases
eggNOG	NOG04871.
HOGENOM	HOG000246913.
KO	K02703.
OMA	HERNVHN.
ProtClustDB	CLSK892431.
Enzyme and pathway databases
BioCyc	MetaCyc:PSBA1-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

PSBA1_SYNY3

Accession

Primary (citable) accession number: P07826
Secondary accession number(s): P74710

Entry history

Integrated into UniProtKB/Swiss-Prot:	August 1, 1988
Last sequence update:	November 1, 1997
Last modified:	May 1, 2013
This is version 110 of the entry and version 3 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program

Relevant documents

Synechocystis PCC 6803

Synechocystis (strain PCC 6803): entries and gene names

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

Experimental info

Sequences

References

Cross-references

Sequence databases

3D structure databases

Protein-protein interaction databases

Proteomic databases

Protocols and materials databases

Genome annotation databases

Phylogenomic databases

Enzyme and pathway databases

Family and domain databases

Entry information

Relevant documents