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You are here:Home » Molecular Biology » Growth Factors-Fetuin » Alpha-2-Heremans Schmid Glycoprotein, aa19-367, His-Tag (aHSG, Alpha-2-HS-Glycoprotein, A2HS, AHS, FETUA) Recombinant, Human

Alpha-2-Heremans Schmid Glycoprotein, aa19-367, His-Tag (aHSG, Alpha-2-HS-Glycoprotein,
A2HS, AHS, FETUA) Recombinant, Human

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Specifications

AHSG, also known as fetuin-A, belongs to the fetuin class of plasma binding proteins. It is involved in several functions, such as endocytosis, brain development and the formation of bone tissue. It is commonly present in the cortical plate of the immature cerebral cortex and bone marrow hemopoietic matrix, and it has been postulated that it participates in the development of the tissues. It forms soluble complexes with calcium and phosphate and thus is a carrier of otherwise insoluble calcium phosphate.
Catalog #136992
Alpha2-HS glycoprotein, a glycoprotein present in the serum, is synthesized by hepatocytes. The AHSG molecule consists of two polypeptide chains, which are both cleaved from a proprotein encoded from a single mRNA. It is involved in several functions, such as endocytosis, brain development and the formation of bone tissue. The protein is commonly present in the cortical plate of the immature cerebral cortex and bone marrow hemopoietic matrix, and it has therefore been postulated that it participates in the development of the tissues. However, its exact significance is still obscure.[3] The choroid plexus is an established extrahepatic expression site. The mature circulating AHSG molecule consists of two polypeptide chains, which are both cleaved from a proprotein encoded from a single mRNA. Multiple post-translational modifications have been reported.[4] Thus AHSG is a secreted partially phosphorylated glycoprotein with complex proeolytic processing that circulates in blood and extracellular fluids. In the test tube AHSG can bind multiple ligands and therefore has been claimed to be involved in several functions, such as endocytosis, brain development and the formation of bone tissue. Most of these functions await confirmation in vivo. Fetuins like histidine-rich glycoprotein and kininogens are secreted (so-called type 3) cystatins.[5] Fetuins are carrier proteins like albumin. Fetuin-A forms soluble complexes with calcium and phosphate and thus is a carrier of otherwise insoluble calcium phosphate.[6][7] Thus fetuin-A is a potent inhibitor of pathological calcification. Mice deficient in fetuin-A show systemic calcification of soft tissues.[8][9]
SourceRecombinant protein corresponding to human AHSG, fused to His-tag at N-terminal expressed in E.coli.
Molecular Weight~39.7kD (372aa) (MALDI-TOF)
AA SequenceMGSSHHHHHH SSGLVPRGSH MGSAPHGPGL IYRQPNCDDP ETEEAALVAI DYINQNLPWG YKHTLNQIDE VKVWPQQPSG ELFEIEIDTL ETTCHVLDPT PVARCSVRQL KEHAVEGDCD FQLLKLDGKF SVVYAKCDSS PDSAEDVRKV CQDCPLLAPL NDTRVVHAAK AALAAFNAQN NGSNFQLEEI SRAQLVPLPP STYVEFTVSG TDCVAKEATE AAKCNLLAEK QYGFCKATLS EKLGGAEVAV TCTVFQTQPV TSQPQPEGAN EAVPTPVVDP DAPPSPPLGA PGLPPAGSPP DSHVLLAAPP GHQLHRAHYD LRHTFMGVVS LGSPSGEVSH PRKTRTVVQP SVGAAAGPVV PPCPGRIRHF KV
Storage and StabilityMay be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Molecular Weight~39.7kD
SourceE.coli
Purity~90% (SDS-PAGE)
Concentration~0.5mg/ml
FormSupplied as a liquid in 20mM Tris-HCl buffer, pH 8.0, 10% glycerol 0.1M NaCl, 1mM DTT.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.


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