Cytochrome b Group
| Definition: |
Cytochromes (electron-transporting proteins) with protoheme (HEME B) as the prosthetic group. |
| Notes: |
/biosyn /physiol permitted; spell in titles & translations with lowercase b: cytochrome b; do not confuse with CYTOCHROMES B |
| Previously Indexed: |
Cytochromes (1966-1982) |
Cytochrome b Group Categories.
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Cytochromes b - Cytochromes of the b group that have alpha-band absorption of 563-564 nm. They occur as subunits in MITOCHONDRIAL ELECTRON TRANSPORT COMPLEX III. |
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Cytochromes b5 - Cytochromes of the b group that are found bound to cytoplasmic side of ENDOPLASMIC RETICULUM. They serve as electron carrier proteins for a vareirty of membrane-bound OXYGENASES. They are reduced by the enzyme CYTOCHROME-B(5) REDUCTASE. |
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Cytochromes b6 - Cytochromes of the b group that are found as components of the CYTOCHROME B6F COMPLEX. They contain two non-covalently bound HEME B groups. |
Cytochrome b Group Definitions and Terms
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