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UniProtKB/Swiss-Prot entry Q5CC93


[Entry info] [Name and origin] [References] [Comments] [Cross-references] [Keywords] [Features] [Sequence] [Tools]

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Entry information
Entry name UCRIA_CYAPA
Primary accession number Q5CC93
Secondary accession numbers None
Integrated into Swiss-Prot on July 5, 2005
Sequence was last modified on April 12, 2005 (Sequence version 1)
Annotations were last modified on    July 22, 2008 (Entry version 21)
Name and origin of the protein
Protein name Cytochrome b6-f complex iron-sulfur subunit 1, cyanelle [Precursor]
Synonyms EC 1.10.99.1
Rieske iron-sulfur protein 1
RISP 1
ISP 1
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein 1
Gene name
Name: petC-1
From
Cyanophora paradoxa [TaxID: 2762] 
Taxonomy Eukaryota; Glaucocystophyceae; Cyanophoraceae; Cyanophora.
Protein existence 2: Evidence at transcript level;
References
[1]
NUCLEOTIDE SEQUENCE [MRNA], AND PROTEIN IMPORT INTO ISOLATED CYANELLES.
STRAIN=UTEX LB 555 / Pringsheim;
DOI=10.1111/j.1742-4658.2004.04533.x; PubMed=15691332 [NCBI, ExPASy, EBI, Israel, Japan]
Steiner J.M., Berghoefer J., Yusa F., Pompe J.A., Kloesgen R.B., Loeffelhardt W.;
"Conservative sorting in a primitive plastid. The cyanelle of Cyanophora paradoxa.";
FEBS J. 272:987-998(2005).
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.
  • COFACTOR: Binds 1 2Fe-2S cluster per subunit (By similarity).
  • SUBUNIT: 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: Plastid, cyanelle 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: This protein is 1 of 2 subunits of the cytochrome b6-f complex that are encoded in the nucleus.
  • MISCELLANEOUS: The Rieske iron-sulfur protein is a high potential 2Fe-2S protein.
  • SIMILARITY: Contains 1 Rieske domain.
Copyright
Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.
Cross-references
Sequence databases
EMBL
AJ784852; CAH04960.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
3D structure databases
ModBase Q5CC93.
Ontologies
GO
GO:0009496; Molecular function: plastoquinol-plastocyanin reductase activity (inferred from electronic annotation from EC).
QuickGo view.
Family and domain databases
InterPro IPR014909; Cyt_b6-F_Fe-S_su.
IPR014349; Rieske.
IPR005805; Rieske_C.
IPR005806; Rieske_reg.
Graphical view of domain structure.
Gene3D G3DSA:2.102.10.10; Rieske_reg; 1.
PANTHER PTHR10134; Rieske; 1.
Pfam PF08802; CytB6-F_Fe-S; 1.
PF00355; Rieske; 1.
Pfam graphical view of domain structure.
PRINTS PR00162; RIESKE.
PROSITE PS51296; RIESKE; 1.
PROSITE graphical view of domain structure (profiles).
BLOCKS Q5CC93.
Other
ProtoNet Q5CC93.
UniRef View cluster of proteins with at least 50% / 90% / 100% identity.
Keywords
2Fe-2S; Cyanelle; Electron transport; Iron; Iron-sulfur; Membrane; Metal-binding; Oxidoreductase; Plastid; Thylakoid; Transit peptide; Transmembrane; Transport.
Features
SEVIEWER logo Feature table viewer FT aligner logo Feature aligner
KeyFrom   To Length Description FTId
TRANSIT   1    60  60     Cyanelle (Potential). 
CHAIN   61   239  179     Cytochrome b6-f complex iron-sulfur subunit 1, cyanelle. PRO_0000030687
TRANSMEM   81   101  21     Potential. 
DOMAIN   125   221  97     Rieske. 
METAL   167   167        Iron-sulfur (2Fe-2S) (By similarity). 
METAL   169   169        Iron-sulfur (2Fe-2S) (via pros nitrogen) (By similarity). 
METAL   185   185        Iron-sulfur (2Fe-2S) (By similarity). 
METAL   188   188        Iron-sulfur (2Fe-2S) (via pros nitrogen) (By similarity). 
DISULFID   172   187        By similarity. 
Sequence information
Length: 239 AA [This is the length of the unprocessed precursor] Molecular weight: 24735 Da [This is the MW of the unprocessed precursor] CRC64: 0D95E0A5458109CB [This is a checksum on the sequence]
        10         20         30         40         50         60 
MAFTTTAVVA PRGAKITGQS STCAIQNGKT VAVGTSKQVG SFKPVFAAAK PAKETTFSVS 

        70         80         90        100        110        120 
CSAASDDVPD MGKRKLMNLL LLGAIAGPVA GAGGPFVSFL VPPKAGGGAG AGQAAKDALG 

       130        140        150        160        170        180 
NDVKVSSWLE THKPGDRSLA QGLKGDATYL IVKEDGTLEN YGLNAVCTHL GCVVPWNASE 

       190        200        210        220        230 
NKFMCPCHGS QYDRTGKVVR GPAPLSLALA HVSVLEDGVV AFEPWTETDF RTNTAPWWK 

Q5CC93 in FASTA format

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