UniProt:P35228 NOS2

chain
  • chain:1-1153
checksum 47671E5385CB3A52
comment
  • FUNCTION Produces nitric oxide (NO) which is a messenger molecule with diverse functions throughout the body (PubMed:7504305, PubMed:7531687, PubMed:7544004, PubMed:7682706). In macrophages, NO mediates tumoricidal and bactericidal actions. Also has nitrosylase activity and mediates cysteine S-nitrosylation of cytoplasmic target proteins such PTGS2/COX2 (By similarity). As component of the iNOS-S100A8/9 transnitrosylase complex involved in the selective inflammatory stimulus-dependent S-nitrosylation of GAPDH on 'Cys-247' implicated in regulation of the GAIT complex activity and probably multiple targets including ANXA5, EZR, MSN and VIM (PubMed:25417112). Involved in inflammation, enhances the synthesis of pro-inflammatory mediators such as IL6 and IL8 (PubMed:19688109).CATALYTIC ACTIVITY 2 L-arginine + 3 NADPH + 4 O2 + H(+) = 2 L-citrulline + 2 nitric oxide + 3 NADP(+) + 4 H2OCOFACTOR Binds 1 FAD.COFACTOR Binds 1 FMN.COFACTOR Tetrahydrobiopterin (BH4). May stabilize the dimeric form of the enzyme.ACTIVITY REGULATION Regulated by calcium/calmodulin. Aspirin inhibits expression and function of this enzyme and effects may be exerted at the level of translational/post-translational modification and directly on the catalytic activity (By similarity).SUBUNIT Homodimer (PubMed:10074942, PubMed:10409685). Interacts with NHERF1 (PubMed:12080081). Interacts with GAPDH; induced by oxidatively-modified low-densitity lipoprotein (LDL(ox)) (PubMed:25417112). Interacts with S100A8 and S100A9 to form the iNOS-S100A8/9 transnitrosylase complex (PubMed:25417112). Interacts with SPSB1, SPSB2 and SPSB4 (PubMed:21199876). Interacts with ELOC and CUL5 in the presence of SPSB1 or SPSB2 or SPSB4 (PubMed:21199876). Forms a complex with ASL, ASS1 and HSP90AA1; the complex regulates cell-autonomous L-arginine synthesis and citrulline recycling while channeling extracellular L-arginine to nitric oxide synthesis pathway.INTERACTION Localizes as discrete foci scattered throughout the cytosol and in the presence of SPSB1 and SPSB4, exhibits a more diffuse cytosolic localization.ALTERNATIVE PRODUCTS Expressed in the liver, retina, bone cells and airway epithelial cells of the lung. Not expressed in the platelets. Expressed in chondrocytes (PubMed:7504305).INDUCTION By endotoxins and cytokines. Induced by IFNG/IFN-gamma acting synergistically with bacterial lipopolysaccharides (LPS), TNF or IL1B/interleukin-1 beta (PubMed:7504305, PubMed:7528267). Down-regulated by zinc due to inhibition of NF-kappa-B transactivation activity (PubMed:25180171). By oxidatively-modified low-densitity lipoprotein (LDL(ox)) (PubMed:25417112).PTM Polyubiquitinated; mediated by SPSB1, SPSB2 and SPSB4, leading to proteasomal degradation.POLYMORPHISM Genetic variations in NOS2 are involved in resistance to malaria [MIM:611162].SIMILARITY Belongs to the NOS family.ONLINE INFORMATION Nitric oxide synthase entry
crossReference
databaseName UniProt
dbId 60486
description
  • recommendedName: fullName evidence="29"Nitric oxide synthase, inducible ecNumber evidence="21 26"1.14.13.39 alternativeName: Hepatocyte NOS shortName: HEP-NOS alternativeName: Inducible NO synthase shortName: Inducible NOS shortName: iNOS alternativeName: NOS type II alternativeName: Peptidyl-cysteine S-nitrosylase NOS2
displayName UniProt:P35228 NOS2
geneName
  • NOS2
  • NOS2A
identifier P35228
isSequenceChanged false
keyword
  • 3D-structure
  • Alternative splicing
  • Calcium
  • Calmodulin-binding
  • Cytoplasm
  • FAD
  • Flavoprotein
  • FMN
  • Heme
  • Iron
  • Metal-binding
  • NADP
  • Oxidoreductase
  • Phosphoprotein
  • Proteomics identification
  • Reference proteome
  • Ubl conjugation
  • Zinc
modified [InstanceEdit:9939033] Weiser, Joel, 2025-02-21
moleculeType Protein
name
  • NOS2
otherIdentifier
  • 11724403_at
  • 11752035_a_at
  • 11752213_a_at
  • 1418_at
  • 1419_g_at
  • 16842517
  • 1948_f_at
  • 210037_PM_s_at
  • 210037_s_at
  • 2576342
  • 3714422
  • 3714424
  • 3748390
  • 3748392
  • 3750338
  • 3750346
  • 3750375
  • 3750376
  • 3750377
  • 3750378
  • 3750379
  • 3750380
  • 3750381
  • 3750382
  • 3750383
  • 3750384
  • 3750385
  • 3750386
  • 3750388
  • 3750391
  • 3750393
  • 3750396
  • 3750397
  • 3750398
  • 3750399
  • 3750401
  • 3750403
  • 3750404
  • 3750405
  • 3750406
  • 3750407
  • 3750409
  • 3750410
  • 3750411
  • 3750412
  • 3750413
  • 3750415
  • 3750416
  • 3750417
  • 3750418
  • 3750419
  • 3750421
  • 3750422
  • 3750423
  • 4843
  • 8013536
  • A_21_P0011583
  • A_23_P502464
  • D29675_at
  • D29675_s_at
  • GE61880
  • GO:0001666
  • GO:0001912
  • GO:0002227
  • GO:0002376
  • GO:0004517
  • GO:0005515
  • GO:0005516
  • GO:0005634
  • GO:0005654
  • GO:0005737
  • GO:0005777
  • GO:0005782
  • GO:0005829
  • GO:0005856
  • GO:0005886
  • GO:0006520
  • GO:0006527
  • GO:0006801
  • GO:0006809
  • GO:0006954
  • GO:0007263
  • GO:0007623
  • GO:0009617
  • GO:0009725
  • GO:0010181
  • GO:0010629
  • GO:0016491
  • GO:0018119
  • GO:0020037
  • GO:0030863
  • GO:0032310
  • GO:0032496
  • GO:0032755
  • GO:0032757
  • GO:0034617
  • GO:0034618
  • GO:0038096
  • GO:0042127
  • GO:0042177
  • GO:0042742
  • GO:0042803
  • GO:0043457
  • GO:0045454
  • GO:0045776
  • GO:0046872
  • GO:0048471
  • GO:0050660
  • GO:0050661
  • GO:0050796
  • GO:0050829
  • GO:0071222
  • GO:0071346
  • GO:0071466
  • GO:0098542
  • GO:1900015
  • HMNXSV003004158
  • HMNXSV003026794
  • HMNXSV003051116
  • ILMN_1747882
  • ILMN_1748765
  • ILMN_2322831
  • PH_hs_0027962
  • TC17002562.hg
  • TC17002894.hg
  • X85781_s_at
  • g404048_3p_a_at
physicalEntity
referenceDatabase [ReferenceDatabase:2] UniProt
referenceGene
referenceTranscript
schemaClass ReferenceGeneProduct
secondaryIdentifier
  • NOS2_HUMAN
  • A1L3U5
  • B7ZLY2
  • O60757
  • O94994
  • Q16263
  • Q16692
  • Q4TTS5
  • Q9UD42
sequenceLength 1153
species [Species:48887] Homo sapiens
stId uniprot:P35228
url http://purl.uniprot.org/uniprot/P35228
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