The function of GMCL2 (germ cell-less 2, spermatogenesis associated, Ensembl gene identifier ENSG00000244234) is as follows. Possible function in spermatogenesis. Probable substrate- specific adapter of an E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins (PubMed:14528312). {ECO:0000250|UniProtKB:Q920G9, ECO:0000269|PubMed:14528312}.