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Key Documents

G5640

Sigma-Aldrich

Globulins Cohn fraction II, III from goat

Synonym(s):

Vitamin D binding protein

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About This Item

CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352202
NACRES:
NA.61

biological source

goat

assay

73-90% protein basis (biuret)

form

lyophilized powder

composition

Protein, 73-90% biuret

solubility

H2O: soluble 25 mg/mL

storage temp.

2-8°C

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General description

Vitamin D binding protein (DBP) is a polymorphic protein that specifically binds to vitamin D and its metabolites. This protein belongs to the albuminoid family and is highly conserved among vertebrates. The gene encoding DBP is mapped to human chromosome 4q11-q13. It is predominantly produced in the liver and is also expressed in the kidney, endocrine pancreatic cells, fat cells, and testis.

Application

Globulins were used in Biotin/avidin formulations.

Biochem/physiol Actions

Vitamin D binding protein (DBP) specifically binds and transports vitamin D and its metabolites with high affinity. It promotes fibrillar actin clearance by binding to actin monomers. DBP also binds to unsaturated fatty acids, megalin-cubilin receptor complex, the membrane of leukocytes, and the activation of the complement C5 system. The levels of DBP indicate the free concentration of all vitamin D metabolites. Decreased levels of serum DBP are observed in liver diseases, nephrotic syndrome, malnutrition, severe acute trauma, or disease.

Other Notes

Primarily γ-globulins

Physical form

Lyophilized powder containing NaCl

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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