Protein
Spermatogenesis-defective protein 39
Organism
Caenorhabditis elegans
Function
Proposed to be involved in endosomal maturation implicating in part vps-33.2. May play a role in epithelial polarization through stabilization of apical membrane protein content. May play a role in transcriptional regulation (By similarity). Plays a role in lysosomal trafficking, probably via association with the core HOPS complex in a discrete population of endosomes. Essential for vesicular trafficking during spermatogenesis; required during spermiogenesis or sperm activation for the morphogenesis of specialized Golgi-derived fibrous body-membranous organelle (FB-MO) complexes. Required for the processing of internalized proteins in oocytes and coelomocytes.
Similarity
Belongs to the SPE39 family.
Sequence
MALRRKFTFELPEDSYWNESDSNSSGLFDDLQSKQLQARAAVDNLFGGDETPKPYVRPQNPTPTPTNVPLQIDGRAAAVSDKANIRITDTSPRASGKIVDDFLNMKFAENVNVAPVIQTAPSVVSEASASSLPSEAQRLDLDYNRLRQEHRKLKDQHEVLRHERFQPLTIEASIKRMLQGHTVTLDYYRSLRDKTQLLKQAVATYDNNTIFKIVIFLERTLKENIFCKIMDGQKSACRVYTRHLQITGEWDKMNKFLRSIGQYQHASVIEFEATRKYKRNPDKRVPLLRTMLHGSFSIPEMKFEARQMEALMRNYEIQLQMEKMDAGDKGEHFRKFPKTSSLIGLPALSSLYYSAMYHYDDSPTSAASLPSVQTLIRFNDRLATQTIVSALTRLSRWPDIDKLLQPKTITMTFSAAKSVFKGKKSTSKWGVSINNHNLLTIVKRSHPSPPTDFIYRILKGESDAQERLRLALLFDVPEMVIECLTQKGDRLSLASYAKSLKTNSVESFKAVAALNNPSIKWK