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Rabbit Recombinant Monoclonal Chromogranin A antibody. Suitable for WB, ICC/IF, IHC-Fr, Flow Cyt (Intra), IHC-P and reacts with Mouse, Rat samples. Cited in 2 publications.

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Images

Immunocytochemistry/ Immunofluorescence - Anti-Chromogranin A antibody [EPR22537-248] (AB254322), expandable thumbnail
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Chromogranin A antibody [EPR22537-248] (AB254322), expandable thumbnail
  • Western blot - Anti-Chromogranin A antibody [EPR22537-248] (AB254322), expandable thumbnail
  • Flow Cytometry (Intracellular) - Anti-Chromogranin A antibody [EPR22537-248] (AB254322), expandable thumbnail
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Chromogranin A antibody [EPR22537-248] (AB254322), expandable thumbnail

Publications

Key facts

Isotype
IgG
Host species
Rabbit
Storage buffer

pH: 7.2 - 7.4
Preservative: 0.01% Sodium azide
Constituents: PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA

Form
Liquid
Clonality
Monoclonal

Immunogen

  • The exact immunogen used to generate this antibody is proprietary information.

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Reactivity data

Select an application
Product promiseTestedExpectedPredictedNot recommended
IPWBICC/IFIHC-FrFlow Cyt (Intra)IHC-P
Mouse
Not recommended
Tested
Tested
Tested
Tested
Tested
Rat
Not recommended
Tested
Tested
Tested
Expected
Tested

Not recommended
Not recommended

Species
Mouse
Dilution info
-
Notes

Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

Species
Rat
Dilution info
-
Notes

Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

Tested
Tested

Species
Mouse
Dilution info
1/1000
Notes

-

Species
Rat
Dilution info
1/1000
Notes

-

Tested
Tested

Species
Mouse
Dilution info
1/100
Notes

-

Species
Rat
Dilution info
1/100
Notes

-

Tested
Tested

Species
Mouse
Dilution info
1/500
Notes

Heat mediated antigen retrieval using sodium citrate buffer (10mM citrate pH 6.0 + 0.05% Tween-20).

Species
Rat
Dilution info
1/500
Notes

Heat mediated antigen retrieval using sodium citrate buffer (10mM citrate pH 6.0 + 0.05% Tween-20).

Tested
Tested

Species
Mouse
Dilution info
1/60
Notes

-

Expected
Expected

Species
Rat
Dilution info
Use at an assay dependent concentration.
Notes

-

Tested
Tested

Species
Mouse
Dilution info
1/4000
Notes

Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

Species
Rat
Dilution info
1/4000
Notes

Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

Associated Products

Select an associated product type

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Target data

Function

Pancreastatin. Strongly inhibits glucose induced insulin release from the pancreas. Catestatin. Inhibits catecholamine release from chromaffin cells and noradrenergic neurons by acting as a non-competitive nicotinic cholinergic antagonist. Can induce mast cell migration, degranulation and production of cytokines and chemokines. Serpinin. Regulates granule biogenesis in endocrine cells by up-regulating the transcription of protease nexin 1 (SERPINE2) via a cAMP-PKA-SP1 pathway. This leads to inhibition of granule protein degradation in the Golgi complex which in turn promotes granule formation (PubMed:21436258). Pyroglutaminated (pGlu)-serpinin exerts an antiapoptotic effect on cells exposed to oxidative stress (PubMed:21537909).

Alternative names

Chromogranin-A, CgA, Chga

Recommended products

Rabbit Recombinant Monoclonal Chromogranin A antibody. Suitable for WB, ICC/IF, IHC-Fr, Flow Cyt (Intra), IHC-P and reacts with Mouse, Rat samples. Cited in 2 publications.

Key facts

Isotype
IgG
Form
Liquid
Clonality
Monoclonal
Immunogen
  • The exact immunogen used to generate this antibody is proprietary information.
Clone number
EPR22537-248
Purification technique
Affinity purification Protein A
Concentration
Loading...

Storage

Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle

Notes

Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.
Activity summary

Chromogranin A (CgA) sometimes called chromagranin A is a glycoprotein with a molecular weight of approximately 49–52 kDa. It is highly expressed in the secretory granules of neuroendocrine cells present in tissues such as the adrenal medulla pancreas and endocrine cells of the gastrointestinal tract. CgA identified as part of a family including chromogranin B and chromogranin C functions mechanically as a precursor to various bioactive peptides. This translates into its involvement in the storage and release of hormones and peptides within vesicles.

Biological function summary

Chromogranin A assists in the regulation of secretory pathways across multiple neuroendocrine systems. It plays a role in hormone storage conversion to active peptides and regulates the exocytosis of hormones. CgA acts within a complex contributing to secretory granule biogenesis and influencing intravesicular acidity. As a regulatory component the exact physiological roles are diverse impacting cardiovascular metabolic and immunological processes.

Pathways

Chromogranin A is involved in pathways such as the catecholamine synthesis and release pathway and the serotonergic pathway. Within these pathways it interacts with proteins like secretogranin II and parathyroid hormone (PTH). These interactions modulate neurotransmitter storage and secretion across various systems. CgA's bioactive peptides also contribute to modulating physiological processes like vasoconstriction and insulin regulation linking it closely with these signaling cascades.

Associated diseases and disorders

Chromogranin A is a known marker for neuroendocrine tumors where its levels in blood may increase due to tumor activity. It links to diseases like pheochromocytoma and carcinoid tumors where improper regulation of CgA-associated pathways occurs. Additionally its connection to parathyroid disorders through the PTH pathway illustrates its broader implication in endocrine pathophysiology. CgA serves as an invaluable diagnostic and prognostic tool in these disease states and supports the development of targeted therapies.

Product promise

We are dedicated to supporting your work with high quality reagents and we are here for you every step of the way should you need us.

In the unlikely event of one of our products not working as expected, you are covered by our product promise.

Full details and terms and conditions can be found here:
Terms & Conditions.

8 product images

  • Immunocytochemistry/ Immunofluorescence - Anti-Chromogranin A antibody [EPR22537-248] (ab254322), expandable thumbnail

    Immunocytochemistry/ Immunofluorescence - Anti-Chromogranin A antibody [EPR22537-248] (ab254322)

    Immunofluorescent analysis of 4% paraformaldehyde-fixed, 0.1% Triton X-100 permeabilized Neuro-2a (mouse neuroblastoma cell line) cells labeling Chromogranin A with ab254322 at 1/100 dilution, followed by a Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077) secondary antibody at 1/1000 dilution (green). Confocal image showing membranous and cytoplasmic staining in Neuro-2a cell line. The nuclear counter stain is DAPI (blue). Tubulin is detected with Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor® 594) (Alexa Fluor® 594 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker ab195889) at 1/200 dilution (red).

    Secondary antibody only control: Used PBS instead of primary antibody, followed by Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077) secondary antibody at 1/1000 dilution.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322)

    Immunohistochemical analysis of paraffin-embedded rat panceas tissue labeling Chromogranin A with ab254322 at 1/4000 dilution, followed by Rabbit specific IHC polymer detection kit HRP/DAB (Rabbit specific IHC polymer detection kit HRP/DAB ab209101). Positive staining on rat pancreas islet (PMID: 22412953) is observed. Counter stained with hematoxylin.

    Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Rabbit specific IHC polymer detection kit HRP/DAB (Rabbit specific IHC polymer detection kit HRP/DAB ab209101).

    Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

    The section was incubated with ab254322 for 30 mins at RT.

    The immunostaining was performed on a Leica Biosystems BOND® RX instrument.

  • Western blot - Anti-Chromogranin A antibody [EPR22537-248] (ab254322), expandable thumbnail

    Western blot - Anti-Chromogranin A antibody [EPR22537-248] (ab254322)

    Blocking and dilution buffer: 5% NFDM/TBST.

    Exposure times.

    Lane 1: 15 seconds; Lane 2: 3.25 seconds; Lane 3:26 seconds; Lane 4: 3.25 seconds; Lane 5: 15 seconds.

    The molecular weight observed is consistent with what has been described in the literature (PMID: 14734658, 21052719).

    All lanes: Western blot - Anti-Chromogranin A antibody [EPR22537-248] (ab254322) at 1/1000 dilution

    Lane 1: Neuro-2a (mouse neuroblastoma cell line) whole cell lysate at 20 µg

    Lane 2: PC-12 (rat adrenal gland pheochromocytoma cell line) whole cell lysate at 20 µg

    Lane 3: Mouse serum at 20 µg

    Lane 4: Mouse adrenal gland lysate at 20 µg

    Lane 5: Rat adrenal gland lysate at 20 µg

    Secondary

    All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/100000 dilution

    Predicted band size: 50 kDa

    Observed band size: 20 kDa, 75 kDa

  • Flow Cytometry (Intracellular) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322), expandable thumbnail

    Flow Cytometry (Intracellular) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322)

    Intracellular flow cytometric analysis of4% paraformaldehyde-fixed, 90% methanol-permeabilized Neuro-2a (mouse neuroblastoma cell line) cells labeling Chromogranin A with ab254322 at 1/60 (red) compared with Recombinant Rabbit IgG, monoclonal [EPR25A] - Isotype Control (Rabbit IgG, monoclonal [EPR25A] - Isotype Control ab172730) (black) and an unlabelled control (cells without incubation with primary antibody and secondary antibody) (blue).

    Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077), at 1/2000 dilution was used as the secondary antibody.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322)

    Immunohistochemical analysis of paraffin-embedded mouse pancreas tissue labeling Chromogranin A with ab254322 at 1/4000 dilution, followed by Rabbit specific IHC polymer detection kit HRP/DAB (Rabbit specific IHC polymer detection kit HRP/DAB ab209101). Positive staining on mouse pancreas islet (PMID: 22412953) is observed. Counter stained with hematoxylin.

    Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Rabbit specific IHC polymer detection kit HRP/DAB (Rabbit specific IHC polymer detection kit HRP/DAB ab209101).

    Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

    The section was incubated with ab254322 for 30 mins at RT.

    The immunostaining was performed on a Leica Biosystems BOND® RX instrument.

  • Immunohistochemistry (Frozen sections) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322), expandable thumbnail

    Immunohistochemistry (Frozen sections) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322)

    Frozen section of 4% PFA-fixed, 0.2% Triton X-100 permeabilized rat colon tissue labeling Chromogranin A with ab254322 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077), at 1/1000 dilution (green). Positive staining on enteroendocrine cells of mouse colon (PMID: 27287799) is observed. The nuclear counter stain is DAPI (blue).

    Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077), at 1/1000 dilution.

    Heat mediated antigen retrieval using sodium citrate buffer (10mM citrate pH 6.0 + 0.05% Tween-20).

  • Immunocytochemistry/ Immunofluorescence - Anti-Chromogranin A antibody [EPR22537-248] (ab254322), expandable thumbnail

    Immunocytochemistry/ Immunofluorescence - Anti-Chromogranin A antibody [EPR22537-248] (ab254322)

    Immunofluorescent analysis of 4% paraformaldehyde-fixed, 0.1% Triton X-100 permeabilized PC-12 (rat adrenal gland pheochromocytoma cell line) cells labeling Chromogranin A with ab254322 at 1/100 dilution, followed by a Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077) secondary antibody at 1/1000 dilution (green). Confocal image showing membranous and cytoplasmic staining in PC-12 cell line. The nuclear counter stain is DAPI (blue). Tubulin is detected with Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor® 594) (Alexa Fluor® 594 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker ab195889) at 1/200 dilution (red).

    Secondary antibody only control: Used PBS instead of primary antibody, followed by Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077) secondary antibody at 1/1000 dilution.

  • Immunohistochemistry (Frozen sections) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322), expandable thumbnail

    Immunohistochemistry (Frozen sections) - Anti-Chromogranin A antibody [EPR22537-248] (ab254322)

    Frozen section of 4% PFA-fixed, 0.2% Triton X-100 permeabilized mouse colon tissue labeling Chromogranin A with ab254322 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077), at 1/1000 dilution (green). Positive staining on enteroendocrine cells of mouse colon (PMID: 27287799). is observed. The nuclear counter stain is DAPI (blue).

    Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077), at 1/1000 dilution.

    Heat mediated antigen retrieval using sodium citrate buffer (10mM citrate pH 6.0 + 0.05% Tween-20).

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Product protocols

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