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Human Coagulation Factor XIII PRODUCT INQUIRY Thrombin Catalyzed Activation of Factor XII The zymogen, factor XIII, is a tetramer (A2B2) composed of 2 identical A subunits and 2 identical B subunits. Thrombin cleaves a Mr=4000 peptide from the NH2-terminal of the light chain, exposing the active site sulfhydryl. Full expression of activity is achieved following Ca2+-dependent dissociation of the B chain dimer. HCXIII-0160 Human Factor XIII Pricing: Please Inquire SAMPLE DATA SHEET | SAFETY DATA SHEET Size 100 μg Formulation 50% (vol/vol) glycerol/500uM EDTA Storage -20°C Purity >95% by SDS-PAGE Activity Determination Commercial XIII ELISA Shelf Life (properly stored) 12 months