The function of DNAJC5 (DnaJ heat shock protein family (Hsp40) member C5, Ensembl gene identifier ENSG00000101152) is as follows. Acts as a general chaperone in regulated exocytosis (By similarity). Acts as a co-chaperone for the SNARE protein SNAP-25 (By similarity). Involved in the calcium-mediated control of a late stage of exocytosis (By similarity). May have an important role in presynaptic function. May be involved in calcium-dependent neurotransmitter release at nerve endings (By similarity). .