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Merck
CN

C9335

Sigma-Aldrich

Chromogranin A from bovine adrenal medulla

≥90% (SDS-PAGE), lyophilized powder

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About This Item

MDL number:
UNSPSC Code:
12352200
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Assay

≥90% (SDS-PAGE)

form

lyophilized powder

mol wt

75 kDa by SDS-PAGE (very hydrophilic protein)
apparent mol wt ~48 kDa by amino acid sequence

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

cow ... CHGA(281070)

Biochem/physiol Actions

Chromogranin A, a high-capacity low-affinity Ca2+ binding protein, is a major protein in secretory vesicles. It is a precursor of biologically active peptides (Pancreasatin) and is involved in the sorting of secretory proteins and granules biogenesis. Chromogranin A interacts with membrane proteins, including the inositol 1,4,5-triphosphate receptor/Ca2+ channel.

Packaging

Package size based on protein content

Preparation Note

When reconstituted to 200 μl with distilled water, solution will contain 20 mM Tris, pH 7.4, 100 mm KCl, 0.1 mM DTT and 10% trehalose.

Regulatory Information

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The chromogranins A and B: the first 25 years and future perspectives.
H Winkler et al.
Neuroscience, 49(3), 497-528 (1992-08-01)
J Sigafoos et al.
Journal of anatomy, 183 ( Pt 2), 253-264 (1993-10-01)
The adrenal medulla chromaffin vesicle (CV) contains, on a weight basis, as much soluble protein and peptide as catecholamine. The bulk of the protein is accounted for by chromogranins (Cgr) A, B and C. Additionally, a large variety of neuropeptides
S H Yoo et al.
Biochemistry, 34(2), 632-638 (1995-01-17)
The secretory vesicles of adrenal chromaffin cells have previously been identified as a major inositol 1,4,5-trisphosphate (IP3)-sensitive Ca2+ store, and their Ca2+ store role has been attributed to the presence of chromogranin A, a high capacity, low affinity Ca2+ binding
W B Huttner et al.
Trends in biochemical sciences, 16(1), 27-30 (1991-01-01)
The chromogranins/secretogranins, referred to in abbreviated form as granins, are a family of acidic secretory proteins that are found in the secretory granules of a wide variety of endocrine cells and neurons, being stored together with many different peptide hormones
S H Yoo et al.
The Journal of biological chemistry, 265(24), 14414-14421 (1990-08-25)
Chromogranin A, the most abundant protein in bovine adrenal chromaffin granules, bound calmodulin in a Ca2(+)-dependent manner, and the calmodulin-binding property was utilized to purify chromogranin A. Chromogranin A has been described in the past as a "random-coil polypeptide" with

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