| Type: | Family | Name: | Cytochrome c, class ID |
| Description: | Cytochromes c (cytC) can be defined as electron-transfer proteins having one or several haem c groups, bound to the protein by one or, more generally, two thioether bonds involving sulphydryl groups of cysteine residues. The fifth haem iron ligand is always provided by a histidine residue. CytC possess a wide range of properties and function in a large number of different redox processes. Ambler [] recognised four classes of cytC.Class I includes the low-spin soluble cytC of mitochondria and bacteria, with the haem-attachment sitetowards the N terminus, and the sixth ligand provided by a methionine residue about 40 residues further on towards the C terminus. On the basisof sequence similarity, class I cytC were further subdivided into five classes, IA to IE.Class ID (cyt c8) includes such bacterial proteins as Pseudomonas spp. cyt c-551, Hydrogenobacter thermophiluscyt c-552 and Rhodocyclus tenuis(Rhodospirillum tenue) cyt c-553 []. Sequence characteristics include severalPro residues around the sixth ligand Met, and a conserved Trp residue near the C terminus.The 3D structures of cyt C-551 from Pseudomonas aeruginosaand Pseudomonas stutzerihave been determined []. The proteins consist of 5 alpha-helices;three 'core' helices form a 'basket' around the haem group, with one haem edge exposed to the solvent. | Short Name: | Cyt_c_ID |
| GO Term | Gene Name |
|---|---|
| GO:0005506 | IPR002324 |
| GO:0009055 | IPR002324 |
| GO:0020037 | IPR002324 |
| DB identifier | UniProt Accession | Secondary Identifier | Organism Name | Length |
|---|---|---|---|---|
| 29354.m000028 | B9TBB6 | PAC:16802756 | Ricinus communis |
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