Binds long-chain acyl-coenzyme A molecules with a strong preference for unsaturated C18:1-CoA, lower affinity for unsaturated C20:4-CoA, and very weak affinity for saturated C16:0-CoA. Does not bind fatty acids. Plays a role in protein N-myristoylation (PubMed:37951597). {ECO:0000269|PubMed:18268358, ECO:0000269|PubMed:37951597}. This is the function of ENSG00000230124 (ACBD6, acyl-CoA binding domain containing 6).