DNAJC1 Full-Length MS Protein Standard (NP_071760), Labeled with [U- 13C6, 15N4]-L-Arginine and [U- 13C6, 15N2]-L-Lysine, was produced in human 293 cells (HEK293) with fully chemically defined cell culture medium to obtain incorporation efficiency at Creative-Proteomics. Interacts (via J domain) with HSPA5. Interacts (via cytosolic domain) with ribosomes (By similarity). Interacts (via SANT 2 domain) with SERPINA3; the interaction delays the formation of the covalent inhibitory complex SERPINA3-chymotrypsin, but does not alter the catalytic activity of SERPINA3. Interacts (via SANT 2 domain) with ITIH4 (via C-terminus); the interaction protects ITIH4 against in vitro cleavage by kallikrein.