Cytochrome b6-f complex iron-sulfur subunit 3 - Anabaena sp. (strain PCC 7120)

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Reviewed, UniProtKB/Swiss-Prot P70758 (UCRIC_ANASP)

Last modified June 16, 2009. Version 68. History...

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Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

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Names and origin

Protein names

Recommended name:
    Cytochrome b6-f complex iron-sulfur subunit 3
    EC=1.10.99.1
Alternative name(s):
    Rieske iron-sulfur protein 3
    Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein 3
      Short name=ISP 3
      Short name=RISP 3

Gene names

Name:	petC3
Synonyms:	petC4
Ordered Locus Names:	all1512

Organism

Anabaena sp. (strain PCC 7120) [Complete proteome] [HAMAP]

Taxonomic identifier

103690 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Nostocales › Nostocaceae › Nostoc

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Protein attributes

Sequence length	178 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

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General annotation (Comments)

Function	Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions By similarity.
Catalytic activity	Plastoquinol-1 + 2 oxidized plastocyanin = plastoquinone + 2 reduced plastocyanin. HAMAP MF_01335
Cofactor	Binds 1 2Fe-2S cluster per subunit By similarity.
Subunit structure	The 4 large subunits of the cytochrome b6-f complex are cytochrome b6, subunit IV (17 kDa polypeptide, petD), cytochrome f and the Rieske protein, while the 4 small subunits are petG, petL, petM and petN. The complex functions as a dimer By similarity.
Subcellular location	Cellular thylakoid membrane; Single-pass membrane protein By similarity. Note: The transmembrane helix obliquely spans the membrane in one monomer, and its extrinsic C-terminal domain is part of the other monomer By similarity.
Miscellaneous	The Rieske iron-sulfur protein is a high potential 2Fe-2S protein. HAMAP MF_01335
Sequence similarities	Contains 1 Rieske domain.

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Ontologies

Keywords
Biological process	Electron transport Transport
Cellular component	Membrane Thylakoid
Domain	Transmembrane
Ligand	2Fe-2S Iron Iron-sulfur Metal-binding
Molecular function	Oxidoreductase
PTM	Disulfide bond
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	electron transport chain Inferred from electronic annotation. Source: UniProtKB-KW photosynthesis Inferred from electronic annotation. Source: HAMAP transport Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW thylakoid membrane Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	2 iron, 2 sulfur cluster binding Inferred from electronic annotation. Source: UniProtKB-KW electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity Inferred from electronic annotation. Source: HAMAP iron ion binding Inferred from electronic annotation. Source: UniProtKB-KW plastoquinol-plastocyanin reductase activity Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

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Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Feature identifier

Molecule processing

Chain

1 – 178

178

Cytochrome b6-f complex iron-sulfur subunit 3 HAMAP MF_01335

PRO_0000127769

Regions

Transmembrane

20 – 42

Potential

Domain

65 – 161

Rieske

Sites

Metal binding

107

Iron-sulfur (2Fe-2S) By similarity

Metal binding

109

Iron-sulfur (2Fe-2S); via pros nitrogen By similarity

Metal binding

125

Iron-sulfur (2Fe-2S) By similarity

Metal binding

128

Iron-sulfur (2Fe-2S); via pros nitrogen By similarity

Amino acid modifications

Disulfide bond

112 ↔ 127

By similarity

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Sequences

Sequence

Length

Mass (Da)

Tools

P70758-1 [UniParc].

Last modified February 1, 1997. Version 1.
Checksum: EF1FA8142BDEB7E3
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FASTA

178

18,984

        10         20         30         40         50         60 
MDNSIPIESP SLSRRQLLNF ITGATVAVTA GAALYPAGKF LIAPAEKTGA GGAILAKDIL 

        70         80         90        100        110        120 
GKQIPASQIL AEPPQTRALV AGLAGEPTYL IVKEDHTLDR IGLVDNCTHL GCTFPWNPLD 

       130        140        150        160        170 
QQFQCPCHGS RYAPDGSVVR GPAPLPLKIV QVAVIDNSIL ISPWTETDPR TGKKPWWV

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References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Cell-type specificity of the Anabaena fdxN-element rearrangement requires xisH and xisI." Ramaswamy K.S., Carrasco C.D., Fatma T., Golden J.W. Mol. Microbiol. 23:1241-1249(1997) [PubMed: 9106215] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"b6f complex of Anabaena sp; possible function of alternative Rieske-FeS proteins." Arnold M. Submitted (MAY-2001) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[3]	"Complete genomic sequence of the filamentous nitrogen-fixing cyanobacterium Anabaena sp. strain PCC 7120." Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A., Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M., Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M. , Takazawa M., Yamada M., Yasuda M., Tabata S. DNA Res. 8:205-213(2001) [PubMed: 11759840] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

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Cross-references

Sequence databases
	U72238 Genomic DNA. Translation: AAB52987.1. AJ319649 Genomic DNA. Translation: CAC39609.1. BA000019 Genomic DNA. Translation: BAB77878.1.
PIR	AC1995.
RefSeq	NP_485553.1.
3D structure databases
HSSP	HSSP built from PDB template 1RFS based on UniProtKB P08980.
ModBase	Search...
Genome annotation databases
GeneID	1105105.
GenomeReviews	Gene locus all1512 in contig BA000019_GR.
KEGG	ana:all1512.
NMPDR	fig\|103690.1.peg.1820.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	P70758.
OMA	P70758. YLIVKED.
Enzyme and pathway databases
BioCyc	NSP103690:ALL1512-MON.
Family and domain databases
HAMAP	MF_01335. [Tree]
InterPro	IPR014909. Cyt_b6-f_cplx_Fe-S_su. IPR017941. Rieske_2Fe-2S. IPR014349. Rieske_Fe-S_prot. IPR006311. Tat. IPR017909. Twin_arg_translocation_Tat. [Graphical view]
Gene3D	G3DSA:2.102.10.10. Rieske_reg. 1 hit.
PANTHER	PTHR10134. Rieske. 1 hit.
Pfam	PF08802. CytB6-F_Fe-S. 1 hit. PF00355. Rieske. 1 hit. [Graphical view]
TIGRFAMs	TIGR01409. TAT_signal_seq. 1 hit.
PROSITE	PS51296. RIESKE. 1 hit. PS51318. TAT. 1 hit. [Graphical view]
ProtoNet	Search...

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Entry information

Entry name

UCRIC_ANASP

Accession

Primary (citable) accession number: P70758

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 1, 1997
Last sequence update:	February 1, 1997
Last modified:	June 16, 2009
This is version 68 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)

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Relevant documents

SIMILARITY comments

Index of protein domains and families

Names and origin

Protein attributes

General annotation (Comments)

Ontologies

Sequence annotation (Features)

Molecule processing

Regions

Sites

Amino acid modifications

Sequences

References

Cross-references

Sequence databases

3D structure databases

Genome annotation databases

Organism-specific databases

Phylogenomic databases

Enzyme and pathway databases

Family and domain databases

Entry information

Relevant documents