IDO2

IDO2
Identifiers
Aliases	IDO2, INDOL1, indoleamine 2,3-dioxygenase 2
External IDs	OMIM: 612129; MGI: 2142489; HomoloGene: 48830; GeneCards: IDO2; OMA: IDO2 - orthologs
Gene location ( Human)
Chr.	Chromosome 8 (human)
End	40,016,392 bp
Gene location ( Mouse)
Chr.	Chromosome 8 (mouse)
End	25,066,349 bp
RNA expression pattern
	Top expressed in
	right lobe of liver; ; testicle; ; placenta; ; left lobe of thyroid gland; ; right lobe of thyroid gland; ; appendix; ; gonad; ; endometrium; ; lymph node; ; right testis;
	Top expressed in
	right kidney; ; proximal tubule; ; zygote; ; secondary oocyte; ; liver; ; embryo; ; embryo; ; left lobe of liver; ; tail of embryo; ; epiblast;
	More reference expression data
	n/a
Gene ontology
Molecular function	oxidoreductase activity; indoleamine 2,3-dioxygenase activity; tryptophan 2,3-dioxygenase activity; heme binding; dioxygenase activity; metal ion binding;
Cellular component	cytoplasm; cytosol;
Biological process	tryptophan catabolic process; immune system process; tryptophan catabolic process to kynurenine; 'de novo' NAD biosynthetic process from tryptophan;
	Sources: Amigo / QuickGO
Orthologs
	169355
	209176
	ENSG00000188676
	ENSMUSG00000031549
	Q6ZQW0
	Q8R0V5
	NM_194294; NM_001395206
	NM_145949
	NP_919270
	NP_666061
	Wikidata
View/Edit Human	View/Edit Mouse

Indoleamine 2,3-dioxygenase 2 (IDO2) is a protein that in humans is encoded by the IDO2 gene.^[5]

Function

IDO2 (indolamine-2,3-dioxygenase) is an enzyme with protein size of 420 amino acids (47 kDa) that is used for catabolism of tryptophan. In organisms, other enzymes participate in L-tryptophan cleavage, namely IDO1 and TDO. Despite IDO1 and IDO2 being closely related enzymes originating by gene duplication and sharing high level (43%) of sequence homology,^[6]^[7] they differentiate by their kinetics, function and expression pattern. Genes encoding IDO1 and IDO2 have similar genomic structure and are situated closely to each other on chromosome 8.^[8] IDO2 is produced in a very limited type of tissues as kidney, liver or antigen presenting cells.^[9] IDO2 is less active on substrates of IDO1, better catabolizing other Trp derivates as 5-methoxytryptophan. There are several isoforms in population that comes from alternative splicing.^[10] As well as IDO1, IDO2 has been reported in Treg differentiation in vitro,^[11] suggesting a role in tolerance maintenance. Its expression has been found in several cancers, gastric, colon or renal tumors.^[12]

References

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000188676 – Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000031549 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Entrez Gene: Indoleamine 2,3-dioxygenase 2".
^ Yuasa HJ, Mizuno K, Ball HJ (July 2015). "Low efficiency IDO2 enzymes are conserved in lower vertebrates, whereas higher efficiency IDO1 enzymes are dispensable". The FEBS Journal. 282 (14): 2735–45. doi: 10.1111/febs.13316. PMID 25950090. S2CID 25834690.
^ Ball HJ, Sanchez-Perez A, Weiser S, Austin CJ, Astelbauer F, Miu J, McQuillan JA, Stocker R, Jermiin LS, Hunt NH (July 2007). "Characterization of an indoleamine 2,3-dioxygenase-like protein found in humans and mice". Gene. 396 (1): 203–13. doi: 10.1016/j.gene.2007.04.010. PMID 17499941.
^ Ball HJ, Sanchez-Perez A, Weiser S, Austin CJ, Astelbauer F, Miu J, McQuillan JA, Stocker R, Jermiin LS, Hunt NH (July 2007). "Characterization of an indoleamine 2,3-dioxygenase-like protein found in humans and mice". Gene. 396 (1): 203–13. doi: 10.1016/j.gene.2007.04.010. PMID 17499941.
^ Merlo LM, Mandik-Nayak L (2016). "IDO2: A Pathogenic Mediator of Inflammatory Autoimmunity". Clinical Medicine Insights. Pathology. 9 (Suppl 1): 21–28. doi: 10.4137/CPath.S39930. PMC 5119657. PMID 27891058.
^ Metz R, Duhadaway JB, Kamasani U, Laury-Kleintop L, Muller AJ, Prendergast GC (August 2007). "Novel tryptophan catabolic enzyme IDO2 is the preferred biochemical target of the antitumor indoleamine 2,3-dioxygenase inhibitory compound D-1-methyl-tryptophan". Cancer Research. 67 (15): 7082–7. doi: 10.1158/0008-5472.CAN-07-1872. PMID 17671174.
^ Metz R, Smith C, DuHadaway JB, Chandler P, Baban B, Merlo LM, Pigott E, Keough MP, Rust S, Mellor AL, Mandik-Nayak L, Muller AJ, Prendergast GC (July 2014). "IDO2 is critical for IDO1-mediated T-cell regulation and exerts a non-redundant function in inflammation". International Immunology. 26 (7): 357–67. doi: 10.1093/intimm/dxt073. PMC 4432394. PMID 24402311.
^ Löb S, Königsrainer A, Zieker D, Brücher BL, Rammensee HG, Opelz G, Terness P (January 2009). "IDO1 and IDO2 are expressed in human tumors: levo- but not dextro-1-methyl tryptophan inhibits tryptophan catabolism". Cancer Immunology, Immunotherapy. 58 (1): 153–7. doi: 10.1007/s00262-008-0513-6. PMC 11030193. PMID 18418598. S2CID 6199515.

Ball HJ, Sanchez-Perez A, Weiser S, Austin CJ, Astelbauer F, Miu J, McQuillan JA, Stocker R, Jermiin LS, Hunt NH (July 2007). "Characterization of an indoleamine 2,3-dioxygenase-like protein found in humans and mice". Gene. 396 (1): 203–13. doi: 10.1016/j.gene.2007.04.010. PMID 17499941.
Metz R, Duhadaway JB, Kamasani U, Laury-Kleintop L, Muller AJ, Prendergast GC (August 2007). "Novel tryptophan catabolic enzyme IDO2 is the preferred biochemical target of the antitumor indoleamine 2,3-dioxygenase inhibitory compound D-1-methyl-tryptophan". Cancer Research. 67 (15): 7082–7. doi: 10.1158/0008-5472.CAN-07-1872. PMID 17671174.
Witkiewicz AK, Costantino CL, Metz R, Muller AJ, Prendergast GC, Yeo CJ, Brody JR (May 2009). "Genotyping and expression analysis of IDO2 in human pancreatic cancer: a novel, active target". Journal of the American College of Surgeons. 208 (5): 781–7, discussion 787–9. doi: 10.1016/j.jamcollsurg.2008.12.018. PMC 3176891. PMID 19476837.
Witkiewicz AK, Costantino CL, Metz R, Muller AJ, Prendergast GC, Yeo CJ, Brody JR (May 2009). "Genotyping and expression analysis of IDO2 in human pancreatic cancer: a novel, active target". Journal of the American College of Surgeons. 208 (5): 781–7, discussion 787–9. doi: 10.1016/j.jamcollsurg.2008.12.018. PMC 3176891. PMID 19476837.
Huttunen R, Syrjänen J, Aittoniemi J, Oja SS, Raitala A, Laine J, Pertovaara M, Vuento R, Huhtala H, Hurme M (February 2010). "High activity of indoleamine 2,3 dioxygenase enzyme predicts disease severity and case fatality in bacteremic patients". Shock. 33 (2): 149–54. doi: 10.1097/SHK.0b013e3181ad3195. PMID 19487973. S2CID 24459411.
Cetindere T, Nambiar S, Santourlidis S, Essmann F, Hassan M (February 2010). "Induction of indoleamine 2, 3-dioxygenase by death receptor activation contributes to apoptosis of melanoma cells via mitochondrial damage-dependent ROS accumulation". Cellular Signalling. 22 (2): 197–211. doi: 10.1016/j.cellsig.2009.09.013. PMID 19799997.
Mao R, Zhang J, Jiang D, Cai D, Levy JM, Cuconati A, Block TM, Guo JT, Guo H (January 2011). "Indoleamine 2,3-dioxygenase mediates the antiviral effect of gamma interferon against hepatitis B virus in human hepatocyte-derived cells". Journal of Virology. 85 (2): 1048–57. doi: 10.1128/JVI.01998-10. PMC 3019998. PMID 21084489.
Sørensen RB, Køllgaard T, Andersen RS, van den Berg JH, Svane IM, Straten P, Andersen MH (March 2011). "Spontaneous cytotoxic T-Cell reactivity against indoleamine 2,3-dioxygenase-2". Cancer Research. 71 (6): 2038–44. doi: 10.1158/0008-5472.CAN-10-3403. PMID 21406395.
Meininger D, Zalameda L, Liu Y, Stepan LP, Borges L, McCarter JD, Sutherland CL (December 2011). "Purification and kinetic characterization of human indoleamine 2,3-dioxygenases 1 and 2 (IDO1 and IDO2) and discovery of selective IDO1 inhibitors". Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics. 1814 (12): 1947–54. doi: 10.1016/j.bbapap.2011.07.023. PMID 21835273.

This article incorporates text from the United States National Library of Medicine, which is in the public domain.

This article on a gene on human chromosome 8 is a stub. You can help Wikipedia by expanding it.

[refGRCh38Ensembl-1] GRCh38: Ensembl release 89: ENSG00000188676 – Ensembl, May 2017

[refGRCm38Ensembl-2] GRCm38: Ensembl release 89: ENSMUSG00000031549 – Ensembl, May 2017

[3] "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[4] "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[entrez-5] "Entrez Gene: Indoleamine 2,3-dioxygenase 2".

[6] Yuasa HJ, Mizuno K, Ball HJ (July 2015). "Low efficiency IDO2 enzymes are conserved in lower vertebrates, whereas higher efficiency IDO1 enzymes are dispensable". The FEBS Journal. 282 (14): 2735–45. doi: 10.1111/febs.13316. PMID 25950090. S2CID 25834690.

[7] Ball HJ, Sanchez-Perez A, Weiser S, Austin CJ, Astelbauer F, Miu J, McQuillan JA, Stocker R, Jermiin LS, Hunt NH (July 2007). "Characterization of an indoleamine 2,3-dioxygenase-like protein found in humans and mice". Gene. 396 (1): 203–13. doi: 10.1016/j.gene.2007.04.010. PMID 17499941.

[8] Ball HJ, Sanchez-Perez A, Weiser S, Austin CJ, Astelbauer F, Miu J, McQuillan JA, Stocker R, Jermiin LS, Hunt NH (July 2007). "Characterization of an indoleamine 2,3-dioxygenase-like protein found in humans and mice". Gene. 396 (1): 203–13. doi: 10.1016/j.gene.2007.04.010. PMID 17499941.

[9] Merlo LM, Mandik-Nayak L (2016). "IDO2: A Pathogenic Mediator of Inflammatory Autoimmunity". Clinical Medicine Insights. Pathology. 9 (Suppl 1): 21–28. doi: 10.4137/CPath.S39930. PMC 5119657. PMID 27891058.

[10] Metz R, Duhadaway JB, Kamasani U, Laury-Kleintop L, Muller AJ, Prendergast GC (August 2007). "Novel tryptophan catabolic enzyme IDO2 is the preferred biochemical target of the antitumor indoleamine 2,3-dioxygenase inhibitory compound D-1-methyl-tryptophan". Cancer Research. 67 (15): 7082–7. doi: 10.1158/0008-5472.CAN-07-1872. PMID 17671174.

[11] Metz R, Smith C, DuHadaway JB, Chandler P, Baban B, Merlo LM, Pigott E, Keough MP, Rust S, Mellor AL, Mandik-Nayak L, Muller AJ, Prendergast GC (July 2014). "IDO2 is critical for IDO1-mediated T-cell regulation and exerts a non-redundant function in inflammation". International Immunology. 26 (7): 357–67. doi: 10.1093/intimm/dxt073. PMC 4432394. PMID 24402311.

[12] Löb S, Königsrainer A, Zieker D, Brücher BL, Rammensee HG, Opelz G, Terness P (January 2009). "IDO1 and IDO2 are expressed in human tumors: levo- but not dextro-1-methyl tryptophan inhibits tryptophan catabolism". Cancer Immunology, Immunotherapy. 58 (1): 153–7. doi: 10.1007/s00262-008-0513-6. PMC 11030193. PMID 18418598. S2CID 6199515.

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