Recombinant Human Complement Component 1, S Subcomponent (C1s) is a purified Prokaryotic Protein. Purity: >97% by SDS-PAGE. Host: E. coli. Endotoxin Level: <1.0EU per 1ug, by the LAL method. Species: Human (Homo sapiens). Target Name: Complement Component 1, S Subcomponent (C1s). Target Synonyms: C1 esterase. Accession Number: P09871. Gene ID: 716. Expression Region: Ile438~Pro685. Tag Info: N-terminal His Tag. Theoretical MW: 33kDa. Buffer: PBS, pH7.4, containing 0.01% SKL, 5% Trehalose. Storage: -20C. Avoid repeated freeze/thaw cycles. Restrictions: For Research Use Only. Not for use in diagnostic procedures.