TRIQK member-proteins share a characteristic triple repeat of the sequence QXXK/R, as well as a hydrophobic C-terminal region. Xenopus and mouse triqk genes are broadly expressed throughout embryogenesis, and mtriqk is also generally expressed in mouse adult tissues. TRIQK proteins are localized to the endoplasmic reticulum membrane. This family is found in eukaryotes and members are typically between and 86 amino acids in length.

1: TRIQK, a novel family of small proteins localized to the endoplasmic reticulum membrane, is conserved across vertebrates. Onuma Y, Watanabe A, Aburatani H, Asashima M, Whitman M; Zoolog Sci. 2008;25:706-713. PMID:18828657