Listed are recombinant proteins for SIS1, another name for the human protein encoded by DNAJB1. The HGNC approved name is 'DnaJ heat shock protein family (Hsp40) member B1'. According to Uniprot (Entry ID P25685), the canonical protein contains 340 residues with a mass of 38.1 kDa. It has been assigned a gene ontology function in 'chaperone cofactor-dependent protein refolding', as well as a subcellular localization as: cytoplasmic, nuclear. Protein orthologs are conserved in: mouse, rat, zebrafish, chimpanzee, guinea pig. It should be noted that as many as 2 isoforms currently exist for DNAJB1.