Cytochrome b6-f complex iron-sulfur subunit 3 - Nostoc sp. (strain PCC 7120 / UTEX 2576)

Contribute

Send feedback

Read comments (?) or add your own

P70758 (UCRIC_NOSS1) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 101. History...

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

Documents (1) |

Third-party data

text xml rdf/xml gff fasta

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

Names and origin

Protein names

Recommended name:
Cytochrome b6-f complex iron-sulfur subunit 3
EC=1.10.9.1

Alternative name(s):
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein 3
Short name=ISP 3
Short name=RISP 3
Rieske iron-sulfur protein 3

Gene names

Name:	petC3
Synonyms:	petC4
Ordered Locus Names:	all1512

Organism

Nostoc sp. (strain PCC 7120 / UTEX 2576) [Complete proteome] [HAMAP]

Taxonomic identifier

103690 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Nostocales › Nostocaceae › Nostoc

Protein attributes

Sequence length	178 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

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. HAMAP-Rule MF_01335
Catalytic activity	Plastoquinol + 2 oxidized plastocyanin + 2 H⁺(Side 1) = plastoquinone + 2 reduced plastocyanin + 2 H⁺(Side 2). HAMAP-Rule MF_01335
Cofactor	Binds 1 2Fe-2S cluster per subunit By similarity. HAMAP-Rule MF_01335
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. HAMAP-Rule MF_01335
Miscellaneous	The Rieske iron-sulfur protein is a high potential 2Fe-2S protein. HAMAP-Rule MF_01335
Sequence similarities	Contains 1 Rieske domain.

Ontologies

Keywords
Biological process	Electron transport Transport
Cellular component	Membrane Thylakoid
Domain	Transmembrane Transmembrane helix
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
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 metal ion binding Inferred from electronic annotation. Source: UniProtKB-KW plastoquinol--plastocyanin reductase activity Inferred from electronic annotation. Source: HAMAP ubiquinol-cytochrome-c reductase activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

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-Rule MF_01335

PRO_0000127769

Regions

Transmembrane

20 – 42

Helical; 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

Sequences

Sequence

Length

Mass (Da)

Tools

P70758 [UniParc].

Last modified February 1, 1997. Version 1.
Checksum: EF1FA8142BDEB7E3
Show »

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

« Hide

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] [Europe PMC] [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] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: PCC 7120 / UTEX 2576.

Cross-references

Sequence databases
EMBL GenBank DDBJ	U72238 Genomic DNA. Translation: AAB52987.1. AJ319649 Genomic DNA. Translation: CAC39609.1. BA000019 Genomic DNA. Translation: BAB77878.1.
PIR	AC1995.
RefSeq	NP_485553.1. NC_003272.1.
3D structure databases
ProteinModelPortal	P70758.
ModBase	Search...
Protein-protein interaction databases
STRING	103690.all1512.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	BAB77878; BAB77878; BAB77878.
GeneID	1105105.
KEGG	ana:all1512.
PATRIC	22773028. VBINosSp37423_1997.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0723.
HOGENOM	HOG000255192.
KO	K02636.
OMA	IFQFNKD.
ProtClustDB	PRK13474.
Family and domain databases
Gene3D	2.102.10.10. 1 hit.
HAMAP	MF_01335. Cytb6_f_Rieske.
InterPro	IPR014909. Cyt_b6-f_cplx_Fe-S_su. IPR023960. Cyt_b6_f_Rieske. IPR017941. Rieske_2Fe-2S. IPR014349. Rieske_Fe-S_prot. IPR005805. Rieske_Fe-S_prot_C. IPR006311. TAT_signal. [Graphical view]
PANTHER	PTHR10134. PTHR10134. 1 hit.
Pfam	PF08802. CytB6-F_Fe-S. 1 hit. PF00355. Rieske. 1 hit. [Graphical view]
PRINTS	PR00162. RIESKE.
SUPFAM	SSF50022. Rieske_dom. 1 hit.
PROSITE	PS51296. RIESKE. 1 hit. PS51318. TAT. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

UCRIC_NOSS1

Accession

Primary (citable) accession number: P70758

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 1, 1997
Last sequence update:	February 1, 1997
Last modified:	May 1, 2013
This is version 101 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

Amino acid modifications

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

Family and domain databases

Entry information

Relevant documents