Photosystem Q(B) protein precursor - Thermosynechococcus vulcanus

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P51765 (PSBA_THEVL) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 85. 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
EC=1.10.3.9

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

Gene names

Name:	psbA
Synonyms:	psbA-1

Organism

Thermosynechococcus vulcanus (Synechococcus vulcanus)

Taxonomic identifier

32053 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Oscillatoriophycideae › Chroococcales › Thermosynechococcus

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. 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.
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.
Subcellular location	Cellular thylakoid membrane; Multi-pass membrane protein 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	3D-structure
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 HAMAP-Rule MF_01379

PRO_0000090491

Propeptide

345 – 360

Potential

PRO_0000316426

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

Metal binding

272

Iron; shared with heterodimeric partner

Site

344 – 345

Cleavage; by CtpA By similarity

Secondary structure

360

Helix Strand Turn

Details...

Sequences

Sequence

Length

Mass (Da)

Tools

P51765 [UniParc].

Last modified October 1, 1996. Version 1.
Checksum: D4B7FD7418E3E335
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FASTA

360

39,766

        10         20         30         40         50         60 
MTTTLQRRES ANLWERFCNW VTSTDNRLYV GWFGVIMIPT LLAATICFVI AFIAAPPVDI 

        70         80         90        100        110        120 
DGIREPVSGS LLYGNNIITG AVVPSSNAIG LHFYPIWEAA SLDEWLYNGG PYQLIIFHFL 

       130        140        150        160        170        180 
LGASCYMGRQ WELSYRLGMR PWICVAYSAP LASAFAVFLI YPIGQGSFSD GMPLGISGTF 

       190        200        210        220        230        240 
NFMIVFQAEH NILMHPFHQL GVAGVFGGAL FCAMHGSLVT SSLIRETTET ESANYGYKFG 

       250        260        270        280        290        300 
QEEETYNIVA AHGYFGRLIF QYASFNNSRS LHFFLAAWRV VGVWFAALGI STMAFNLNGF 

       310        320        330        340        350        360 
NFNHSVIDAK GNVINTWADI INRANLGMEV MHERNAHNFP LDLASAESAP VAMIAPSING

« Hide

References

[1]	"Structure of the D1 subunit of photosystem II in the thermophyllic cyanobacterium Synechococcus vulcanus." Dibrov Y., Rahat A., Ohad N., Hirschberg J. Submitted (MAY-1994) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. Strain: Copeland.
[2]	"Crystal structure of oxygen-evolving photosystem II from Thermosynechococcus vulcanus at 3.7-A resolution." Kamiya N., Shen J.-R. Proc. Natl. Acad. Sci. U.S.A. 100:98-103(2003) [PubMed] [Europe PMC] [Abstract] Cited for: X-RAY CRYSTALLOGRAPHY (3.7 ANGSTROMS).
+	Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ

X79222 Genomic DNA. Translation: CAA55806.1.

PIR

S45009.

3D structure databases

PDBe
RCSB PDB
PDBj

Entry	Method	Resolution (Å)	Chain	Positions	PDBsum
1IZL	X-ray	3.70	A/J	1-360	[»]
3A0B	X-ray	3.70	A/a	1-344	[»]
3A0H	X-ray	4.00	A/a	1-344	[»]
3ARC	X-ray	1.90	A/a	1-344	[»]
4IL6	X-ray	2.10	A/a	11-344	[»]

ProteinModelPortal

P51765.

SMR

P51765. Positions 10-344.

ModBase

Search...

Protein-protein interaction databases

DIP

DIP-48859N.

Protocols and materials databases

StructuralBiologyKnowledgebase

Search...

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]

SUPFAM

SSF81483. Photo_RC_L/M. 1 hit.

TIGRFAMs

TIGR01151. psbA. 1 hit.

PROSITE

PS00244. REACTION_CENTER. 1 hit.
[Graphical view]

ProtoNet

Search...

Other

EvolutionaryTrace

P51765.

Entry information

Entry name

PSBA_THEVL

Accession

Primary (citable) accession number: P51765

Entry history

Integrated into UniProtKB/Swiss-Prot:	October 1, 1996
Last sequence update:	October 1, 1996
Last modified:	May 1, 2013
This is version 85 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

PDB cross-references

Index of Protein Data Bank (PDB) cross-references

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

Secondary structure

Sequences

References

Cross-references

Sequence databases

3D structure databases

Protein-protein interaction databases

Protocols and materials databases

Family and domain databases

Other

Entry information

Relevant documents