AB259359

Anti-TDO2/TDO antibody [EPR23745-311]

20ul selling size
RabMAb
Recombinant
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(4 Publications )

Rabbit Recombinant Monoclonal TDO2/TDO antibody. Suitable for ICC/IF, IP, WB and reacts with Human, Mouse, Rat samples. Cited in 4 publications.

View Alternative Names

TDO, TDO2, Tryptophan oxygenase, Tryptophan pyrrolase, Tryptophanase, TO, TRPO

5 Images

Immunocytochemistry/ Immunofluorescence - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

ICC/IF

Supplier Data

Immunocytochemistry/ Immunofluorescence - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

Immunofluorescent analysis of 4% Paraformaldehyde-fixed, 0.1% TritonX-100 permeabilized 293T cells labelling TDO2/TDO with ab259359 at 1/500 (1.072 ug/ml) dilution, followed by ab150080 Goat Anti-Rabbit IgG H&L (Alexa Fluor® 594) antibody at 1/500 dilution (Green) Confocal image showing cytoplasmic staining in 293T cells transfected with myc-tagged TDO2 expression vector. is observed. Myc-Tag Mouse mAb (Alexa Fluor® 488) was used to counterstain tubulin at 1/100 dilution (Red). The Nuclear counterstain was DAPI (Blue). Secondary antibody only control : Secondary antibody is ab150080 Goat Anti-Rabbit IgG H&L (Alexa Fluor® 594) at 1/500 dilution.

Supplier Data

Immunoprecipitation - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

TDO2/TDO was immunoprecipitated from 0.35 mg Human liver tissue lysate 10 ug with ab259359 at 1/30 dilution (2ug in 0.35mg lysates). Western blot was performed on the immunoprecipitate using ab259359 at 1/1000 dilution. VeriBlot for IP secondary antibody(HRP)(ab131366) was used at 1/5000 dilution.

Lane 1 : Human liver tissue lysate 10 ug

Lane 2 : ab259359 IP in Human liver tissue lysate

Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab259359 in human liver tissue lysate

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

Exposure time : 3 minutes.

All lanes:

Immunoprecipitation - Anti-TDO2/TDO antibody [EPR23745-311] (ab259359)

Predicted band size: 48 kDa

false

Supplier Data

Immunoprecipitation - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

TDO2/TDO was immunoprecipitated from 0.35 mg Mouse liver tissue lysate 10 ug with ab259359 at 1/30 dilution (2ug in 0.35mg lysates). Western blot was performed on the immunoprecipitate using ab259359 at 1/1000 dilution. VeriBlot for IP secondary antibody(HRP)(ab131366) was used at 1/5000 dilution.

Lane 1 : Mouse liver tissue lysate 10 ug

Lane 2 : ab259359 IP in Mouse liver tissue lysate

Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab259359 in mouse liver tissue lysate

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

Exposure time : 3 minutes.

All lanes:

Immunoprecipitation - Anti-TDO2/TDO antibody [EPR23745-311] (ab259359)

Predicted band size: 48 kDa

false

Lab

Western blot - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

Blocking and diluting buffer and concentration : 5% NFDM/TBST

The the expression pattern and observed MW is consistent with what has been described in the literature (PMID : 27573671, PMID : 25691885)

Negative control : pancreas (PMID : 25691885).

Exposure time : 26 seconds

All lanes:

Western blot - Anti-TDO2/TDO antibody [EPR23745-311] (ab259359) at 1/1000 dilution

Lane 1:

Human liver tissue lysate at 40 µg

Lane 2:

Human pancreas tissue lysate at 40 µg

Secondary

All lanes:

Goat Anti-Rabbit IgG (HRP) with minimal cross-reactivity with human IgG at 1/2000 dilution

Predicted band size: 48 kDa

false

Lab

Western blot - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

Blocking and diluting buffer and concentration : 5% NFDM/TBST

The expression pattern and observed MW is consistent with what has been described in the literature (PMID : 25691885, PMID : 10775460).

Negative control : pancreas (PMID : 25691885).

Exposure time : 26 seconds.

All lanes:

Western blot - Anti-TDO2/TDO antibody [EPR23745-311] (ab259359) at 1/1000 dilution

Lane 1:

Mouse liver tissue lysate at 40 µg

Lane 2:

Mouse pancreas tissue lysate at 40 µg

Lane 3:

Rat liver tissue lysate at 40 µg

Lane 4:

Rat pancreas tissue lysate at 40 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/20000 dilution

Predicted band size: 48 kDa

Observed band size: 43 kDa

false

Carrier free

Anti-TDO2/TDO antibody [EPR23745-311] - BSA and Azide free

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR23745-311

Isotype

IgG

Carrier free

Reacts with

Human, Mouse, Rat

Applications

ICC/IF, IP, WB

applications

Immunogen

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

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "ICCIF" : {"fullname" : "Immunocytochemistry/ Immunofluorescence", "shortname":"ICC/IF"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"}, "IHCFr" : {"fullname" : "Immunohistochemistry (Frozen sections)", "shortname":"IHC-Fr"}, "FlowCytIntra" : {"fullname" : "Flow Cytometry (Intracellular)", "shortname":"Flow Cyt (Intra)"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "ICCIF-species-checked": "testedAndGuaranteed", "ICCIF-species-dilution-info": "1/500", "ICCIF-species-notes": "", "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "1/30", "IP-species-notes": "", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "", "IHCFr-species-checked": "notRecommended", "IHCFr-species-dilution-info": "", "IHCFr-species-notes": "", "FlowCytIntra-species-checked": "notRecommended", "FlowCytIntra-species-dilution-info": "", "FlowCytIntra-species-notes": "" }, "Mouse": { "ICCIF-species-checked": "guaranteed", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "", "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "1/30", "IP-species-notes": "", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "", "IHCFr-species-checked": "notRecommended", "IHCFr-species-dilution-info": "", "IHCFr-species-notes": "", "FlowCytIntra-species-checked": "notRecommended", "FlowCytIntra-species-dilution-info": "", "FlowCytIntra-species-notes": "" }, "Rat": { "ICCIF-species-checked": "guaranteed", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "", "IP-species-checked": "guaranteed", "IP-species-dilution-info": "", "IP-species-notes": "", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "", "IHCFr-species-checked": "notRecommended", "IHCFr-species-dilution-info": "", "IHCFr-species-notes": "", "FlowCytIntra-species-checked": "notRecommended", "FlowCytIntra-species-dilution-info": "", "FlowCytIntra-species-notes": "" } } }

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Product details

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

What are the advantages of a recombinant monoclonal antibody?
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.

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Properties and storage information

Form

Liquid

Purification technique

Affinity purification Protein A

Storage buffer

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

Shipped at conditions

Conditional Ambient

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

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Supplementary information

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

TDO2 also known as tryptophan 23-dioxygenase is an enzyme that catalyzes the initial and rate-limiting step in the kynurenine pathway degrading tryptophan to N-formylkynurenine. This reaction is important for regulating systemic tryptophan levels. TDO2 is a heme-containing enzyme with a molecular mass of approximately 53 kDa. It is highly expressed in the liver unlike its counterpart indoleamine 23-dioxygenase (IDO) which has wider tissue distribution. Liver-specific expression suggests its role in orchestrating whole-body tryptophan metabolism.

Biological function summary

TDO2 plays a significant role in maintaining immune tolerance and modulating neurotransmitter levels. While not part of a larger complex it interacts with several other proteins to mediate its effects. By controlling tryptophan availability TDO2 impacts the production of serotonin and downstream kynurenine metabolites affecting neural and immune functions. Its activity influences both central nervous system processes and peripheral immune responses implying a broad impact on various physiological systems.

Pathways

TDO2's function integrates into the kynurenine and serotonin pathways. In the kynurenine pathway TDO2's enzymatic activity leads to the generation of metabolites such as kynurenine and quinolinic acid which have immunoregulatory and excitotoxic properties. The serotonin pathway also indirectly involves TDO2 as it limits tryptophan's availability for serotonin synthesis. TDO2 interacts with IDO in controlling the balance of tryptophan metabolites providing a link between immune signaling and central nervous system regulation.

TDO2 has been implicated in cancer and neurodegenerative diseases. Overexpression of TDO2 is observed in various cancers where it helps create an immune-suppressive environment that aids tumor survival. The enzyme’s upregulation affects tumor microenvironment dynamics often acting in concert with IDO which further mediates immune escape. TDO2's activity may also contribute to neurodegenerative disorders through its impact on kynurenine pathway metabolites which can be neurotoxic. The interplay between TDO2 and IDO suggests that targeting this enzymatic pathway could offer therapeutic avenues in both oncological and neuropsychiatric conditions.

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Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Visit the General protocols
Visit the Troubleshooting

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Target data

Heme-dependent dioxygenase that catalyzes the oxidative cleavage of the L-tryptophan (L-Trp) pyrrole ring and converts L-tryptophan to N-formyl-L-kynurenine. Catalyzes the oxidative cleavage of the indole moiety.

See full target information TDO2

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Publications (4)

Recent publications for all applications. Explore the full list and refine your search

Pulmonary circulation 15:e70171 PubMed41070230

2025

MiR-24 Attenuates Oxidative Stress and Mitochondrial Apoptosis in Ventilator-Induced Lung Injury by Targeting Bcl-2-related Ovarian Killer.

Applications

Unspecified application

Species

Unspecified reactive species

Wenbo Xu,Wenjiao Ren,Lingling Zhang,Bing Wang,Linqi Gao,Dong Yuan

Frontiers in cell and developmental biology 13:1622998 PubMed41059340

2025

Excessive progesterone impairs mouse decidualization via the Kyn-AhR pathway.

Applications

Unspecified application

Species

Unspecified reactive species

Hui-Na Luo,Hong-Yuan Yang,Zai-Mei Wang,Jia-Mei Luo,Tong-Tong Zhang,Zeng-Ming Yang

Cancer research communications 4:2699-2713 PubMed39311710

2024

Blocking Tryptophan Catabolism Reduces Triple-Negative Breast Cancer Invasive Capacity.

Applications

Unspecified application

Species

Unspecified reactive species

Li-Wei Kuo,Lyndsey S Crump,Kathleen O'Neill,Michelle M Williams,Jessica L Christenson,Nicole S Spoelstra,Micaela Kalani Roy,Amy Argabright,Julie A Reisz,Angelo D'Alessandro,Meher P Boorgula,Andrew Goodspeed,Mike Bickerdike,Benjamin G Bitler,Jennifer K Richer

Cancer research communications 4:822-833 PubMed38451784

2024

Targeting Tryptophan Catabolism in Ovarian Cancer to Attenuate Macrophage Infiltration and PD-L1 Expression.

Applications

Unspecified application

Species

Unspecified reactive species

Lyndsey S Crump,Jessica L Floyd,Li-Wei Kuo,Miriam D Post,Mike Bickerdike,Kathleen O'Neill,Kayla Sompel,Kimberly R Jordan,Bradley R Corr,Nicole Marjon,Elizabeth R Woodruff,Jennifer K Richer,Benjamin G Bitler

View all publications

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Product promise

We are committed to supporting your work with high-quality reagents, and we're here for you every step of the way. In the unlikely event that one of our products does not perform as expected, you're protected by our Product Promise.

For full details, please see our Terms & Conditions

Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.

For licensing inquiries, please contact partnerships@abcam.com

Anti-TDO2/TDO antibody [EPR23745-311]

Immunocytochemistry/ Immunofluorescence - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

Immunoprecipitation - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

Immunoprecipitation - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

Western blot - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

Western blot - Anti-TDO2/TDO antibody [EPR23745-311] (AB259359)

Related conjugates and formulations (1)

Key facts

Host species

Clonality

Clone number

Isotype

Carrier free

Reacts with

Applications

Immunogen

Complementary Products

Assay Kits

Primary Antibodies

Primary Antibodies

Primary Antibodies

Primary Antibodies

Reactivity data

Product details

Properties and storage information

Form

Purification technique

Storage buffer

Shipped at conditions

Appropriate short-term storage duration

Appropriate short-term storage conditions

Appropriate long-term storage conditions

Aliquoting information

Storage information

Supplementary information

Biological function summary

Pathways

Product protocols

Target data

Publications (4)

Product promise