F
IPR033943

Ba3-like heme-copper oxidase subunit I

InterPro entry
Short nameBa3-like_Oxidase_I
Overlapping
homologous
superfamilies
 
family relationships

Description

This entry represents ba3-like heme-copper oxidase subunit I.

The ba3 (Type B) family of heme-copper oxidases are transmembrane protein complexes in the respiratory chains of prokaryotes and some archaea which catalyze the reduction of O2and simultaneously pump protons across the membrane. It has been proposed that archaea acquired heme-copper oxidases through gene transfer from Gram-positive bacteria. The ba3 family contains oxidases that lack the conserved residues that form the D- and K-pathways in CcO and ubiquinol oxidase. Instead they contain a potential alternative K-pathway. Additional proton channels have been proposed for this family of oxidases but none have been identified definitively
[1]
.

References

1.A novel scenario for the evolution of haem-copper oxygen reductases. Pereira MM, Santana M, Teixeira M. Biochim. Biophys. Acta 1505, 185-208, (2001). View articlePMID: 11334784

Cross References

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