Q46136 (UCRI_CHLLT) Reviewed, UniProtKB/Swiss-Prot
Last modified
March 6, 2013.
Version 76.
History...
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Cytochrome b6-f complex iron-sulfur subunit EC=1.10.9.1 Alternative name(s): Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein Rieske iron-sulfur protein Short name=ISP Short name=RISP | ||
| Gene names |
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| Organism | Chlorobium limicola f.sp. thiosulfatophilum | ||
| Taxonomic identifier | 115852 [NCBI] | ||
| Taxonomic lineage | Bacteria › Chlorobi › Chlorobia › Chlorobiales › Chlorobiaceae › Chlorobaculum![]() |
Protein attributes
| Sequence length | 181 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 | Component of the green S-bacteria bc-complex which consists of the Rieske protein and cytochrome b subunit and which appears to lack a cytochrome c1-equivalent. This complex has a comparatively low redox potential. |
| Catalytic activity | Plastoquinol + 2 oxidized plastocyanin + 2 H+(Side 1) = plastoquinone + 2 reduced plastocyanin + 2 H+(Side 2). |
| Cofactor | Binds 1 2Fe-2S cluster per subunit By similarity. |
| Subcellular location | Cell membrane; Multi-pass membrane protein Potential. |
| Miscellaneous | The Rieske protein is a high potential 2Fe-2S protein. |
| Sequence similarities | Contains 1 Rieske domain. |
Ontologies
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||
Molecule processing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Initiator methionine | 1 | 1 | Removed Ref.1 | ||||||||
| Chain | 2 – 181 | 180 | Cytochrome b6-f complex iron-sulfur subunit | PRO_0000127772 | |||||||
Regions | |||||||||||
| Transmembrane | 53 – 73 | 21 | Helical; Potential | ||||||||
| Transmembrane | 114 – 134 | 21 | Helical; Potential | ||||||||
| Domain | 85 – 178 | 94 | Rieske | ||||||||
Sites | |||||||||||
| Metal binding | 124 | 1 | Iron-sulfur (2Fe-2S) By similarity | ||||||||
| Metal binding | 126 | 1 | Iron-sulfur (2Fe-2S); via pros nitrogen By similarity | ||||||||
| Metal binding | 142 | 1 | Iron-sulfur (2Fe-2S) By similarity | ||||||||
| Metal binding | 145 | 1 | Iron-sulfur (2Fe-2S); via pros nitrogen By similarity | ||||||||
Amino acid modifications | |||||||||||
| Disulfide bond | 129 ↔ 144 | By similarity | |||||||||
Sequences
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References
| [1] | "A transcription unit for the Rieske FeS-protein and cytochrome b in Chlorobium limicola." Schuetz M., Zirngibl S., le Coutre J., Buettner M., Xie D.-L., Nelson N., Deutzmann R., Hauska G. Photosyn. Res. 39:163-174(1994) Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA], PROTEIN SEQUENCE OF 2-35. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | X73628 Genomic DNA. Translation: CAA52007.1. |
| PIR | S38460. |
3D structure databases | |
| ProteinModelPortal | Q46136. |
| ModBase | Search... |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Family and domain databases | |
| Gene3D | 2.102.10.10. 1 hit. |
| InterPro | IPR014909. Cyt_b6-f_cplx_Fe-S_su. IPR017941. Rieske_2Fe-2S. IPR014349. Rieske_Fe-S_prot. IPR005805. Rieske_Fe-S_prot_C. [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. [Graphical view] |
| ProtoNet | Search... |
Entry information
| Entry name | UCRI_CHLLT | ||||||||
| Accession | Primary (citable) accession number: Q46136 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Prokaryotic Protein Annotation Program | ||||||||
Relevant documents
| SIMILARITY comments Index of protein domains and families |

Clusters with
