TMEM127 modulates mTOR function in the endolysosome. Its interaction with early endosomal GTPase Rab5 to inhibit mTOR signalling seems to be related with its tumour-suppressing properties [1,2].

1: The tumor susceptibility gene TMEM127 is mutated in renal cell carcinomas and modulates endolysosomal function. Qin Y, Deng Y, Ricketts CJ, Srikantan S, Wang E, Maher ER, Dahia PL; Hum Mol Genet. 2014;23:2428-2439. PMID:24334765

2: Germline mutations in TMEM127 confer susceptibility to pheochromocytoma. Qin Y, Yao L, King EE, Buddavarapu K, Lenci RE, Chocron ES, Lechleiter JD, Sass M, Aronin N, Schiavi F, Boaretto F, Opocher G, Toledo RA, Toledo SP, Stiles C, Aguiar RC, Dahia PL; Nat Genet. 2010;42:229-233. PMID:20154675