Recombinant Chromogranin A Antibody

SKU: orb2641081

Description

Chromogranin A is present in neuroendocrine cells throughout the body, including the neuroendocrine cells of the large and small intestine, adrenal medulla and pancreatic islets. It is an excellent marker for carcinoid tumors, pheochromocytomas, paragangliomas, and other neuroendocrine tumors. Co-expression of chromogranin A and neuron specific enolase (NSE) is common in neuroendocrine neoplasms. Reportedly, co-expression of certain keratins and chromogranin indicates neuroendocrine lineage. The presence of strong anti-chromogranin staining and absence of anti-keratin staining should raise the possibility of paraganglioma. The co-expression of chromogranin and NSE is typical of neuroendocrine neoplasms. Most pituitary adenomas and prolactinomas readily express chromogranin.

Images & Validation

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Tested Applications	IHC-P
Dilution Range	Immunohistochemistry (FFPE): 0.25-0.5ug/ml for 30 min at RT
Reactivity	Human, Rat
Application Notes	Optimal dilution of the recombinant Chromogranin A antibody should be determined by the researcher.

Key Properties

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Antibody Type	Primary Antibody
Host	Mouse
Clonality	Recombinant
Isotype	Mouse IgG1, kappa
Clone No.	rCHGA/798
Immunogen	Recombinant human full-length protein was used as the immunogen for the recombinant Chromogranin A antibody.
Purification	Protein G affinity chromatography
Conjugation	Unconjugated

Storage & Handling

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Storage	Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
Buffer/Preservatives	1 mg/ml in 1X PBS; rAlbumin free, sodium azide free
Expiration Date	12 months from date of receipt.
Disclaimer	For research use only

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IHC staining of FFPE human pancreas with recombinant Chromogranin A antibody (clone rCHGA/798). HIER: boil tissue sections in pH6, 10mM citrate buffer, for 10-20 min followed by cooling at RT for 20 min.

Analysis of HuProt (TM) microarray containing more than 19, 000 full-length human proteins using recombinant Chromogranin A antibody (clone rCHGA/798). These results demonstrate the foremost specificity of the rCHGA/798 mAb. Z- and S- score: The Z-score represents the strength of a signal that an antibody (in combination with a fluorescently-tagged anti-IgG secondary Ab) produces when binding to a particular protein on the HuProt (TM) array. Z-scores are described in units of standard deviations (SD's) above the mean value of all signals generated on that array. If the targets on the HuProt (TM) are arranged in descending order of the Z-score, the S-score is the difference (also in units of SD's) between the Z-scores. The S-score therefore represents the relative target specificity of an Ab to its intended target.

SDS-PAGE analysis of purified, BSA-free recombinant Chromogranin A antibody (clone rCHGA/798) as confirmation of integrity and purity.

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UniProt

P10645

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Protocol Information

IHC-P

Immunohistochemistry Paraffin

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