This family of proteins was discovered in a screen of Bos taurus placental ESTs. The B. taurus member of this family was named cattle cerebrum and skeletal muscle-specific transcript 1 [1]. This family of proteins is found in eukaryotes. Proteins in this family are typically between 97 and 157 amino acids in length. There is a single completely conserved residue D that may be functionally important. The function of this family is unknown.

1: Discovery of eight novel divergent homologs expressed in cattle placenta. Larson JH, Kumar CG, Everts RE, Green CA, Everts-van der Wind A, Band MR, Lewin HA; Physiol Genomics. 2006;25:405-413. PMID:16554549