This model describes a small protein of unknown function, about 100 amino acids in length, essentially always found in an operon with CydAB, subunits of the cytochrome d terminal oxidase. It appears to be an integral membrane protein. It is found so far only in the Proteobacteria. [Energy metabolism, Electron transport]
Jiyao W et al.(2023). "The conserved domain database in 2023.",