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Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] ab203859 is a rabbit monoclonal antibody that is used in Ornithine Carbamoyltransferase/OTC western blotting and IHC. Suitable for human, mouse and rat samples.

- Recombinant format for unrivaled batch-batch consistency: no need for same-lot requests
- Antibody clone EPR19725 is the most widely used clone for Ornithine Carbamoyltransferase/OTC on the market


Images

Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (AB203859), expandable thumbnail
  • Immunohistochemistry (Frozen sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (AB203859), expandable thumbnail
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (AB203859), expandable thumbnail
  • Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (AB203859), expandable thumbnail
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (AB203859), expandable thumbnail

Publications

Key facts

Isotype
IgG
Host species
Rabbit
Storage buffer

pH: 7.2 - 7.4
Preservative: 0.01% Sodium azide
Constituents: 59% PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA

Form
Liquid
Clonality
Monoclonal

Immunogen

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

Reactivity data

Select an application
Product promiseTestedExpectedPredictedNot recommended
IPWBIHC-FrIHC-P
Human
Tested
Tested
Expected
Tested
Mouse
Expected
Tested
Tested
Expected
Rat
Expected
Tested
Expected
Expected

Tested
Tested

Species
Human
Dilution info
1/40
Notes

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

Expected
Expected

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

-

Tested
Tested

Species
Mouse
Dilution info
1/1000
Notes

-

Species
Rat
Dilution info
1/1000
Notes

-

Species
Human
Dilution info
1/1000
Notes

-

Tested
Tested

Species
Mouse
Dilution info
1/500
Notes

Antigen retrieval: Heated citrate solution (10mM citrate PH 6.0 + 0.05% Tween-20).

Expected
Expected

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

-

Tested
Tested

Species
Human
Dilution info
1/100
Notes

IHC-P is recommended for human only.

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

Expected
Expected

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

-

Associated Products

Select an associated product type

6 products for Alternative Product

Target data

Function

Catalyzes the second step of the urea cycle, the condensation of carbamoyl phosphate with L-ornithine to form L-citrulline (PubMed:2556444, PubMed:6372096, PubMed:8112735). The urea cycle ensures the detoxification of ammonia by converting it to urea for excretion (PubMed:2556444).

Alternative names

Recommended products

Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] ab203859 is a rabbit monoclonal antibody that is used in Ornithine Carbamoyltransferase/OTC western blotting and IHC. Suitable for human, mouse and rat samples.

- Recombinant format for unrivaled batch-batch consistency: no need for same-lot requests
- Antibody clone EPR19725 is the most widely used clone for Ornithine Carbamoyltransferase/OTC on the market

Key facts

Isotype
IgG
Form
Liquid
Clonality
Monoclonal
Immunogen
  • The exact immunogen used to generate this antibody is proprietary information.
Clone number
EPR19725
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

Ornithine Carbamoyltransferase (OTC) also known as ornithine aminotransferase is an enzyme critical in the urea cycle. The OTC protein facilitates the conversion of ornithine and carbamoyl phosphate into citrulline a process essential for nitrogen excretion. The human OTC protein has a mass of approximately 36 kilodaltons and is primarily expressed in the liver mitochondria. Protein assays and procurement efforts often focus on obtaining accurate measurements and ensuring high-purity OTC peptides enabling proper functional studies.

Biological function summary

Ornithine carbamoyltransferase plays a significant role in detoxifying ammonia by forming citrulline an important urea cycle intermediate. The protein functions as a homotrimer meaning three identical subunits form an active enzyme complex. This multimeric state facilitates efficient substrate processing allowing effective handling of nitrogen waste. The integral role of OTC in the urea cycle highlights its importance in maintaining systemic nitrogen balance.

Pathways

OTC is a central component of the urea cycle and influences nitrogen metabolism pathways. These pathways include the conversion of ammonia to urea an important detoxifying process for safe excretion by the kidneys. OTC closely interacts with enzymes such as argininosuccinate synthetase highlighting the coordinated action required to advance urea formation. Understanding OTC's participation within these pathways helps identify its regulatory points and the potential impact of genetic variations.

Associated diseases and disorders

Mutations in the OTC gene can lead to ornithine transcarbamylase deficiency a disorder affecting ammonia detoxification. This X-linked genetic condition disrupts normal nitrogen metabolism causing ammonia accumulation particularly harmful to the central nervous system. OTC deficiency shares a functional relationship with other urea cycle disorders such as citrullinemia due to its contribution to the same biochemical pathway. Researchers focus on identifying OTC protein mutations to improve diagnosis and treatment of these conditions.

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.

9 product images

  • Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859), expandable thumbnail

    Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Blocking/Dilution buffer: 5% NFDM/TBST.

    Lane 1: Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859) at 1/5000 dilution

    Lane 2: Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859) at 1/1000 dilution

    Lane 1: Human fetal liver lysate at 20 µg

    Lane 2: Human small intestine lysate at 20 µg

    Secondary

    All lanes: Goat Anti-Rabbit IgG Peroxidase Conjugate, specific to the non-reduced form of IgG at 1/100000 dilution

    Predicted band size: 39 kDa

    Observed band size: 40 kDa

    Exposure time: 3min

  • Immunohistochemistry (Frozen sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859), expandable thumbnail

    Immunohistochemistry (Frozen sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Immunohistochemical analysis of 4% paraformaldehyde-fixed, 0.2% Triton X-100 permeabilized Mouse liver tissue labeling Ornithine Carbamoyltransferase/OTC with ab203859 at 1/500 dilution, followed by Goat Anti-Rabbit IgG (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077) at 1/1000 dilution (green).

    Cytoplasmic staining on mouse liver is observed.

    Nuclear counterstain: DAPI (Blue).

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

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Immunohistochemical analysis of paraffin-embedded Human liver tissue labeling Ornithine Carbamoyltransferase/OTC with ab203859 at 1/100 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.

    Cytoplasmic staining on Human liver tissue is observed [PMID: 17893704].

    Counter stained with Hematoxylin.

    Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ab97051 at 1/500 dilution.

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

  • Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859), expandable thumbnail

    Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Blocking/Dilution buffer: 5% NFDM/TBST.

    Exposure time: Lane 1: 15 seconds; Lane 2: 30 seconds.

    All lanes: Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859) at 1/1000 dilution

    Lane 1: Mouse liver lysate at 20 µg

    Lane 2: Rat liver 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: 39 kDa

    Observed band size: 40 kDa

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Immunohistochemical analysis of paraffin-embedded Human liver cancer tissue labeling Ornithine Carbamoyltransferase/OTC with ab203859 at 1/100 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.

    Cytoplasmic staining on Human liver cancer tissue is observed.

    Counter stained with Hematoxylin.

    Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ab97051 at 1/500 dilution.

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

  • Immunoprecipitation - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859), expandable thumbnail

    Immunoprecipitation - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Ornithine Carbamoyltransferase/OTC was immunoprecipitated from 0.35 mg of Human fetal liver lysate with ab203859 at 1/40 dilution.

    Western blot was performed from the immunoprecipitate using ab203859 at 1/1000 dilution.

    VeriBlot for IP Detection Reagent (HRP) (VeriBlot for IP Detection Reagent (HRP) ab131366), was used for detection at 1/10000 dilution.

    Lane 1: Human fetal liver lysate, 10μg (Input).

    Lane 2: ab203859 IP in Human fetal liver lysate.

    Lane 3: Rabbit IgG,monoclonal [EPR25A] - Isotype Control (Rabbit IgG, monoclonal [EPR25A] - Isotype Control ab172730) instead of ab203859 in Human fetal liver lysate.

    Blocking and dilution buffer and concentration: 5% NFDM/TBST.

    Exposure time: 3 minutes.

    All lanes: Immunoprecipitation - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Predicted band size: 39 kDa

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Immunohistochemical analysis of paraffin-embedded Human kidney tissue labeling Ornithine Carbamoyltransferase/OTC with ab203859 at 1/100 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.

    No staining on Human kidney is observed.

    Counter stained with Hematoxylin.

    Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ab97051 at 1/500 dilution.

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

  • Immunohistochemistry (Frozen sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859), expandable thumbnail

    Immunohistochemistry (Frozen sections) - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Immunohistochemical analysis of 4% paraformaldehyde-fixed, 0.2% Triton X-100 permeabilized Mouse kidney tissue labeling Ornithine Carbamoyltransferase/OTC with ab203859 at 1/500 dilution, followed by Goat Anti-Rabbit IgG (Alexa Fluor® 488) (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077) at 1/1000 dilution (green).

    Weakly staining on mouse kidney.

    Nuclear counterstain: DAPI (Blue).

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

  • Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859), expandable thumbnail

    Image collected and cropped by CiteAb under a CC-BY license from the publication

    Western blot - Anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] (ab203859)

    Ornithine Carbamoyltransferase/OTC western blot using anti-Ornithine Carbamoyltransferase/OTC antibody [EPR19725] ab203859. Publication image and figure legend from Chow, J. P. H., Cai, Y., et al., 2020, PLoS One, PubMed 32353864.


    ab203859 was used in this publication in western blot. This may not be the same as the application(s) guaranteed by Abcam. For a full list of applications guaranteed by Abcam for ab203859 please see the product overview.

    Expression of ASS1 in various cell lines and the effect of NEI-01 on their cell viability.(A) Expression of ASS1, ASL and OTC in SMMC7721, MIA PaCa-2 and PANC-1. Unperturbed asynchronously growing cells were harvested by trypsinization. After cell lysis, total cell lysates were subject to immunoblot with anti-ASS1, anti-ASL, anti-OTC or anti-ACTIN antibodies. (B) Inhibition of cell growth of MIA PaCa-2 and PANC-1 cells but not SMMC7721 cells by NEI-01 treatment. SMMC7721 cells, MIA PaCa-2 cells or PANC-1 were seeded in 96 well-plate with ~3000 cells/well density 24 hr prior to NEI-01 treatments. After 72 hr, cells were subject to MTT assay. The relative cell viability in % vs the NEI-01 concentration was shown as mean ± SD of triplicate wells. (C) Activation of autophagic pathway upon NEI-01 treatment. MIA PaCa-2 cells were treated with indicated amount of NEI-01 for 3 or 7 days. The cells were then harvested and subject to immunoblot using designated antibodies.

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