This is a family of proteins found in fungi. The region appears to contain regions similar to mitochondrial electron transport proteins. The C-terminal domain is hydrophobic and negatively charged. There are consensus sites for both N-linked glycosylation and cAMP-dependent protein kinase phosphorylation [1].

1: Sequence of the Saccharomyces cerevisiae YTP1 gene encoding a deduced novel type-III integral membrane protein with domains of sequence similarity to mitochondrial electron-transport enzymes. West RW Jr, Crivellone MD, Ma J, Thomas S; Gene. 1996;169:119-124. PMID:8635735