This family consists of several eukaryotic T-complex protein 11 (Tcp11) related sequences. Tcp11 is only expressed in fertile adult mammalian testes and is thought to be important in sperm function and fertility [1,2,3]. The family also contains the yeast Sok1 protein which is known to suppress cyclic AMP-dependent protein kinase mutants [4].

1: Molecular characterization of the TCP11 gene which is the human homologue of the mouse gene encoding the receptor of fertilization promoting peptide. Ma Y, Zhang S, Xia Q, Zhang G, Huang X, Huang M, Xiao C, Pan A, Sun Y, Lebo R, Milunsky A; Mol Hum Reprod 2002;8:24-31. PMID:11756566

2: [Sterility of males determined by functional features of the mouse spermatozoa bearing t-complex] Safronova LD, Kudriavtsev IV, Kudriavtsev PI; Ontogenez 2002;33:165-169. PMID:12068715

3: [Cloning, Expression and Alternative Splicing of a Novel Isoform of Human TCP11b Gene] Ma YX, Zhang SZ, Wu QQ, Sun Y; Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai) 2003;35:182-188. PMID:12545228

4: Suppression of a yeast cyclic AMP-dependent protein kinase defect by overexpression of SOK1, a yeast gene exhibiting sequence similarity to a developmentally regulated mouse gene. Ward MP, Garrett S; Mol Cell Biol 1994;14:5619-5627. PMID:8065298