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233493 Sigma-Aldrich

Coagulation Factor α-XIIa, Human Plasma

Coagulation Factor α-XIIa, Human Plasma, is a native coagulation factor α-XIIa prepared from homogeneous Factor XII using dextran sulfate. Dextran sulfate is removed after activation.

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Properties

Related Categories Auxiliary Proteins, Biochemicals and Reagents, Other, Proteins and Derivatives
Quality Level   100
form   liquid
specific activity activity   50 units/mg protein (clotting assay)
mfr. no.   Calbiochem®
storage condition   OK to freeze
  avoid repeated freeze/thaw cycles
storage conditions   = -70C
shipped in   wet ice

Description

General description

Native coagulation factor α-XIIa from human plasma prepared from homogeneous Factor XII using dextran sulfate. Dextran sulfate is removed after activation. α-XIIa is a serine protease responsible for activation of Factor XI to Factor XIa. Factor XIIa and prekallikrein are thought to be involved in a reciprocal activation mechanism whereby Factor XIIa activates prekallikrein to kallikrein, which in turn converts Factor XII to Factor XIIa.

Packaging

500 μg in Plastic ampoule

Please refer to vial label for lot-specific concentration.

Warning

Toxicity: Standard Handling (A)

Physical form

In 150 mM NaCl, 4 mM sodium acetate buffer, pH 5.3.

Preparation Note

Prepared from plasma that has been shown by certified tests to be negative for HBsAg and for antibodies to HIV and HCV.

Reconstitution

Following initial thaw, aliquot and freeze (-70°C).

Analysis Note

Clotting activity is determined by comparison to a standard curve produced using normal pooled human plasma

homogeneous by SDS-PAGE

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.
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