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UniProtKB/Swiss-Prot entry Q7X9A6


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

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Entry information
Entry name UCRIA_WHEAT
Primary accession number Q7X9A6
Secondary accession numbers None
Integrated into Swiss-Prot on July 5, 2005
Sequence was last modified on October 1, 2003 (Sequence version 1)
Annotations were last modified on    September 2, 2008 (Entry version 31)
Name and origin of the protein
Protein name Cytochrome b6-f complex iron-sulfur subunit, chloroplastic [Precursor]
Synonyms EC 1.10.99.1
Rieske iron-sulfur protein
RISP
ISP
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein
Gene name
Name: petC
From
Triticum aestivum (Wheat) [TaxID: 4565] 
Taxonomy Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliophyta; Liliopsida; Poales; Poaceae; BEP clade; Pooideae; Triticeae; Triticum.
Protein existence 2: Evidence at transcript level;
References
[1]
NUCLEOTIDE SEQUENCE [MRNA].
Lu Z.-X., Laroche A., Gaudet D.;
"Triticum aestivum putative Rieske Fe-S precursor protein (RISP).";
Submitted (JUN-2002) to the EMBL/GenBank/DDBJ databases.
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, chloroplast 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
AY123422; AAM88439.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
UniGene Ta.53872
3D structure databases
HSSP P83794; 1VF5. [HSSP ENTRY / PDB]
SMR Q7X9A6; 99-221.
ModBase Q7X9A6.
Organism-specific databases
Gramene Q7X9A6; -.
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 Q7X9A6.
Other
ProtoNet Q7X9A6.
UniRef View cluster of proteins with at least 50% / 90% / 100% identity.
Keywords
2Fe-2S; Chloroplast; 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    49  49     Chloroplast (Potential). 
CHAIN   50   222  173     Cytochrome b6-f complex iron-sulfur subunit, chloroplastic. PRO_0000030697
TRANSMEM   66    86  21     Potential. 
DOMAIN   109   205  97     Rieske. 
METAL   151   151        Iron-sulfur (2Fe-2S) (By similarity). 
METAL   153   153        Iron-sulfur (2Fe-2S); via pros nitrogen (By similarity). 
METAL   169   169        Iron-sulfur (2Fe-2S) (By similarity). 
METAL   172   172        Iron-sulfur (2Fe-2S); via pros nitrogen (By similarity). 
DISULFID   156   171        By similarity. 
Sequence information
Length: 222 AA [This is the length of the unprocessed precursor] Molecular weight: 23726 Da [This is the MW of the unprocessed precursor] CRC64: D92CD095FEDFC4D5 [This is a checksum on the sequence]
        10         20         30         40         50         60 
MASTALSTAS NPTQLCRTRA SSLCKPVKGL GFGRERIPRN ITCMAGSISA DRVPDMSKRE 

        70         80         90        100        110        120 
LMNLLLLGAI SLPTFGMLVP YGSFLVPAGS GSNAGGVAAK DKLGNDILVE DWLKTHGPND 

       130        140        150        160        170        180 
RTLAQGLKGD PTYLVVESDK TLATYGINAV CTHLGCVVPW NAAENKFLCP CHGSQYNNQG 

       190        200        210        220 
KVVRGPAPLS LALVHADVDD GKVVFVPWVE TDFRTGDNPW WK 

Q7X9A6 in FASTA format

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