ID NOS2_CAVPO Reviewed; 1149 AA. AC O54705; DT 30-MAY-2000, integrated into UniProtKB/Swiss-Prot. DT 01-JUN-1998, sequence version 1. DT 24-JAN-2024, entry version 162. DE RecName: Full=Nitric oxide synthase, inducible; DE EC=1.14.13.39 {ECO:0000250|UniProtKB:P35228}; DE AltName: Full=Inducible NO synthase; DE Short=Inducible NOS; DE Short=iNOS; DE AltName: Full=NOS type II; DE AltName: Full=Peptidyl-cysteine S-nitrosylase NOS2; GN Name=NOS2; Synonyms=NOS; OS Cavia porcellus (Guinea pig). OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; OC Eutheria; Euarchontoglires; Glires; Rodentia; Hystricomorpha; Caviidae; OC Cavia. OX NCBI_TaxID=10141; RN [1] RP NUCLEOTIDE SEQUENCE [MRNA]. RC STRAIN=Hartley; TISSUE=Lung; RX PubMed=9677342; DOI=10.1042/bj3330795; RA Shirato M., Sakamoto T., Uchida Y., Nomura A., Ishii Y., Iijima H., RA Goto Y., Hasegawa S.; RT "Molecular cloning and characterization of Ca2+-dependent inducible nitric RT oxide synthase from guinea-pig lung."; RL Biochem. J. 333:795-799(1998). CC -!- FUNCTION: Produces nitric oxide (NO) which is a messenger molecule with CC diverse functions throughout the body. In macrophages, NO mediates CC tumoricidal and bactericidal actions. Also has nitrosylase activity and CC mediates cysteine S-nitrosylation of cytoplasmic target proteins such CC PTGS2/COX2. As component of the iNOS-S100A8/9 transnitrosylase complex CC involved in the selective inflammatory stimulus-dependent S- CC nitrosylation of GAPDH implicated in regulation of the GAIT complex CC activity and probably multiple targets including ANXA5, EZR, MSN and CC VIM. Involved in inflammation, enhances the synthesis of pro- CC inflammatory mediators such as IL6 and IL8. CC {ECO:0000250|UniProtKB:P35228, ECO:0000250|UniProtKB:P79290}. CC -!- CATALYTIC ACTIVITY: CC Reaction=H(+) + 2 L-arginine + 3 NADPH + 4 O2 = 4 H2O + 2 L-citrulline CC + 3 NADP(+) + 2 nitric oxide; Xref=Rhea:RHEA:19897, CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379, CC ChEBI:CHEBI:16480, ChEBI:CHEBI:32682, ChEBI:CHEBI:57743, CC ChEBI:CHEBI:57783, ChEBI:CHEBI:58349; EC=1.14.13.39; CC Evidence={ECO:0000250|UniProtKB:P35228}; CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:19898; CC Evidence={ECO:0000250|UniProtKB:P35228}; CC -!- COFACTOR: CC Name=heme b; Xref=ChEBI:CHEBI:60344; CC Evidence={ECO:0000250|UniProtKB:P35228}; CC -!- COFACTOR: CC Name=FAD; Xref=ChEBI:CHEBI:57692; CC Evidence={ECO:0000250|UniProtKB:P29476}; CC Note=Binds 1 FAD. {ECO:0000250|UniProtKB:P29476}; CC -!- COFACTOR: CC Name=FMN; Xref=ChEBI:CHEBI:58210; CC Evidence={ECO:0000250|UniProtKB:P35228}; CC Note=Binds 1 FMN. {ECO:0000250|UniProtKB:P35228}; CC -!- COFACTOR: CC Name=(6R)-L-erythro-5,6,7,8-tetrahydrobiopterin; CC Xref=ChEBI:CHEBI:59560; Evidence={ECO:0000250|UniProtKB:P35228}; CC Note=Tetrahydrobiopterin (BH4). May stabilize the dimeric form of the CC enzyme. {ECO:0000250|UniProtKB:P35228}; CC -!- ACTIVITY REGULATION: Regulated by calcium/calmodulin. CC -!- SUBUNIT: Homodimer. Interacts with NHERF1. Interacts with GAPDH; CC induced by oxidatively-modified low-densitity lipoprotein (LDL(ox)). CC Interacts with S100A8 and S100A9 to form the iNOS-S100A8/9 CC transnitrosylase complex. Interacts with SPSB1, SPSB2 and SPSB4. CC Interacts with ELOC and CUL5 in the presence of SPSB1 or SPSB2 or CC SPSB4. Forms a complex with ASL, ASS1 and HSP90AA1; the complex CC regulates cell-autonomous L-arginine synthesis and citrulline recycling CC while channeling extracellular L-arginine to nitric oxide synthesis CC pathway. {ECO:0000250|UniProtKB:P29477}. CC -!- SUBCELLULAR LOCATION: Cytoplasm, cytosol CC {ECO:0000250|UniProtKB:P35228}. Note=Localizes as discrete foci CC scattered throughout the cytosol and in the presence of SPSB1 and CC SPSB4, exhibits a more diffuse cytosolic localization. CC {ECO:0000250|UniProtKB:P35228}. CC -!- TISSUE SPECIFICITY: Expressed in the lung and colon. Not detected in CC the heart, aorta, liver, kidney, and spleen. CC -!- INDUCTION: By lipopolysaccharide (LPS); in kidney, spleen, and colon. CC Expression is reduced in the presence of LPS in lung. CC -!- PTM: Polyubiquitinated; mediated by SPSB1, SPSB2 and SPSB4, leading to CC proteasomal degradation. {ECO:0000250|UniProtKB:P35228}. CC -!- SIMILARITY: Belongs to the NOS family. {ECO:0000305}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AF027180; AAC33177.1; -; mRNA. DR RefSeq; NP_001166455.1; NM_001172984.1. DR AlphaFoldDB; O54705; -. DR SMR; O54705; -. DR STRING; 10141.ENSCPOP00000016760; -. DR GeneID; 100135576; -. DR KEGG; cpoc:100135576; -. DR CTD; 4843; -. DR eggNOG; KOG1158; Eukaryota. DR InParanoid; O54705; -. DR OrthoDB; 276396at2759; -. DR Proteomes; UP000005447; Unassembled WGS sequence. DR GO; GO:0005829; C:cytosol; IEA:UniProtKB-SubCell. DR GO; GO:0005516; F:calmodulin binding; IEA:UniProtKB-KW. DR GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro. DR GO; GO:0010181; F:FMN binding; IEA:InterPro. DR GO; GO:0020037; F:heme binding; IEA:InterPro. DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW. DR GO; GO:0050661; F:NADP binding; IEA:InterPro. DR GO; GO:0004517; F:nitric-oxide synthase activity; ISS:UniProtKB. DR GO; GO:0042742; P:defense response to bacterium; ISS:UniProtKB. DR GO; GO:0006809; P:nitric oxide biosynthetic process; IEA:InterPro. DR GO; GO:0018119; P:peptidyl-cysteine S-nitrosylation; ISS:UniProtKB. DR GO; GO:0032755; P:positive regulation of interleukin-6 production; ISS:UniProtKB. DR GO; GO:0032757; P:positive regulation of interleukin-8 production; ISS:UniProtKB. DR GO; GO:0032310; P:prostaglandin secretion; ISS:UniProtKB. DR GO; GO:1900015; P:regulation of cytokine production involved in inflammatory response; ISS:UniProtKB. DR GO; GO:0006801; P:superoxide metabolic process; ISS:UniProtKB. DR CDD; cd00795; NOS_oxygenase_euk; 1. DR Gene3D; 3.40.50.360; -; 2. DR Gene3D; 6.10.250.410; -; 1. DR Gene3D; 3.90.440.10; Nitric Oxide Synthase;Heme Domain;Chain A domain 2; 1. DR Gene3D; 3.40.50.80; Nucleotide-binding domain of ferredoxin-NADP reductase (FNR) module; 1. DR Gene3D; 2.40.30.10; Translation factors; 1. DR InterPro; IPR003097; CysJ-like_FAD-binding. DR InterPro; IPR017927; FAD-bd_FR_type. DR InterPro; IPR001094; Flavdoxin-like. DR InterPro; IPR008254; Flavodoxin/NO_synth. DR InterPro; IPR001709; Flavoprot_Pyr_Nucl_cyt_Rdtase. DR InterPro; IPR029039; Flavoprotein-like_sf. DR InterPro; IPR039261; FNR_nucleotide-bd. DR InterPro; IPR023173; NADPH_Cyt_P450_Rdtase_alpha. DR InterPro; IPR044943; NOS_dom_1. DR InterPro; IPR044940; NOS_dom_2. DR InterPro; IPR044944; NOS_dom_3. DR InterPro; IPR012144; NOS_euk. DR InterPro; IPR004030; NOS_N. DR InterPro; IPR036119; NOS_N_sf. DR InterPro; IPR001433; OxRdtase_FAD/NAD-bd. DR InterPro; IPR017938; Riboflavin_synthase-like_b-brl. DR PANTHER; PTHR43410; NITRIC OXIDE SYNTHASE OXYGENASE; 1. DR PANTHER; PTHR43410:SF1; NITRIC OXIDE SYNTHASE OXYGENASE; 1. DR Pfam; PF00667; FAD_binding_1; 1. DR Pfam; PF00258; Flavodoxin_1; 1. DR Pfam; PF00175; NAD_binding_1; 1. DR Pfam; PF02898; NO_synthase; 1. DR PIRSF; PIRSF000333; NOS; 1. DR PRINTS; PR00369; FLAVODOXIN. DR PRINTS; PR00371; FPNCR. DR SUPFAM; SSF52343; Ferredoxin reductase-like, C-terminal NADP-linked domain; 1. DR SUPFAM; SSF52218; Flavoproteins; 1. DR SUPFAM; SSF56512; Nitric oxide (NO) synthase oxygenase domain; 1. DR SUPFAM; SSF63380; Riboflavin synthase domain-like; 1. DR PROSITE; PS51384; FAD_FR; 1. DR PROSITE; PS50902; FLAVODOXIN_LIKE; 1. DR PROSITE; PS60001; NOS; 1. PE 2: Evidence at transcript level; KW Calcium; Calmodulin-binding; Cytoplasm; FAD; Flavoprotein; FMN; Heme; Iron; KW Metal-binding; NADP; Oxidoreductase; Phosphoprotein; Reference proteome; KW Ubl conjugation; Zinc. FT CHAIN 1..1149 FT /note="Nitric oxide synthase, inducible" FT /id="PRO_0000170929" FT DOMAIN 538..676 FT /note="Flavodoxin-like" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00088" FT DOMAIN 729..969 FT /note="FAD-binding FR-type" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00716" FT REGION 22..83 FT /note="Disordered" FT /evidence="ECO:0000256|SAM:MobiDB-lite" FT REGION 514..534 FT /note="Calmodulin-binding" FT /evidence="ECO:0000250|UniProtKB:P35228" FT MOTIF 23..27 FT /note="DINNN-motif; mediates interaction with SPSB1, SPSB2 FT and SPSB4" FT /evidence="ECO:0000250|UniProtKB:P35228" FT COMPBIAS 49..83 FT /note="Polar residues" FT /evidence="ECO:0000256|SAM:MobiDB-lite" FT BINDING 109 FT /ligand="Zn(2+)" FT /ligand_id="ChEBI:CHEBI:29105" FT /ligand_note="ligand shared between homodimeric partners" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 114 FT /ligand="Zn(2+)" FT /ligand_id="ChEBI:CHEBI:29105" FT /ligand_note="ligand shared between homodimeric partners" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 117 FT /ligand="(6R)-L-erythro-5,6,7,8-tetrahydrobiopterin" FT /ligand_id="ChEBI:CHEBI:59560" FT /evidence="ECO:0000250|UniProtKB:P29474" FT BINDING 199 FT /ligand="heme b" FT /ligand_id="ChEBI:CHEBI:60344" FT /ligand_part="Fe" FT /ligand_part_id="ChEBI:CHEBI:18248" FT /note="axial binding residue" FT /evidence="ECO:0000250|UniProtKB:P29474" FT BINDING 262 FT /ligand="L-arginine" FT /ligand_id="ChEBI:CHEBI:32682" FT /evidence="ECO:0000250|UniProtKB:P29474" FT BINDING 371 FT /ligand="L-arginine" FT /ligand_id="ChEBI:CHEBI:32682" FT /evidence="ECO:0000250|UniProtKB:P29474" FT BINDING 372 FT /ligand="L-arginine" FT /ligand_id="ChEBI:CHEBI:32682" FT /evidence="ECO:0000250|UniProtKB:P29474" FT BINDING 376 FT /ligand="L-arginine" FT /ligand_id="ChEBI:CHEBI:32682" FT /evidence="ECO:0000250|UniProtKB:P29474" FT BINDING 380 FT /ligand="(6R)-L-erythro-5,6,7,8-tetrahydrobiopterin" FT /ligand_id="ChEBI:CHEBI:59560" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 461 FT /ligand="(6R)-L-erythro-5,6,7,8-tetrahydrobiopterin" FT /ligand_id="ChEBI:CHEBI:59560" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 462 FT /ligand="(6R)-L-erythro-5,6,7,8-tetrahydrobiopterin" FT /ligand_id="ChEBI:CHEBI:59560" FT /evidence="ECO:0000250|UniProtKB:P29474" FT BINDING 475 FT /ligand="(6R)-L-erythro-5,6,7,8-tetrahydrobiopterin" FT /ligand_id="ChEBI:CHEBI:59560" FT /evidence="ECO:0000250|UniProtKB:P29474" FT BINDING 490 FT /ligand="heme b" FT /ligand_id="ChEBI:CHEBI:60344" FT /evidence="ECO:0000250|UniProtKB:P29474" FT BINDING 544 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 545 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 546 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 548 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 549 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 590 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 591 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 627 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 632 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 634 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 660 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 664 FT /ligand="FMN" FT /ligand_id="ChEBI:CHEBI:58210" FT /evidence="ECO:0000250|UniProtKB:P35228" FT BINDING 749 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 771 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 905 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 907 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 908 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 923 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 925 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 928 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 929 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 942 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 943 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 944 FT /ligand="FAD" FT /ligand_id="ChEBI:CHEBI:57692" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 983 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 1016 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 1045 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 1046 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 1052 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 1054 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 1056 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT BINDING 1089 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000250|UniProtKB:P29476" FT MOD_RES 574 FT /note="Phosphotyrosine" FT /evidence="ECO:0000250|UniProtKB:Q06518" SQ SEQUENCE 1149 AA; 130632 MW; 66D595A2486DB50E CRC64; MACPWNFLWK LKSSRYDLTE EKDINNNVGK ASHLYSPEIQ DDPKYCSPGK HQNGSSQSLT GTAKKVPESQ SKPHKPSPTC SQHMKIKNWG NGMILQDTLH TKAKTNFTCK PKSCLGSVMN PRSMTRGPRD TPIPPDELLP QAIEFVNQYY DSFKEAKIEE YLARVETVTK EIETTGTYQL TGDELIFATK LAWRNAPRCI GRIQWSNLQV FDARSCHTAQ EMFEHICRHV RYSTNNGNIR SAITVFPQRT DGKHDFRVWN AQLIRYAGYQ MPDGTIQGDP ANLEFTQLCI DLGWKPRYGR FDVLPLILQA DGRDPELFEI PPDLVLEVPM EHPKYEWFQD LGLKWYALPA VANMLLEVGG LEFPACPFNG WYMGTEIGVR DFCDAQRYNI LEEVGRRMGL ETHTLASLWK DRAVTEINVA VLHSFQKQNV TIMDHHSAAE SFMKHMQNEY RARGGCPADW IWLVPPISGS ITPVFHQEML NYILSPFYYY QVEAWKTHVW QDETRRPKRR EIPFRVLAKA TLFASLLMRK MMASRVRATI LFATETGKSE ALAQDLGALF SCAFNPKVLC MDQYQLSSLE EEKLLLVVTS TFGNGDCPGN GETLKKSLFV LKKLTNTFRY AVFGLGSSMY PRFCAFAHDI DIKLSQLGAS QLTPVGEGDE LSGQEDAFCT WAVQTFQAAC AAFDVRGRHH ITIPKRYTSS VTWEPYHYRL VQDSQPLDLN KALSRMHATD VFTMRLKSQK NLQSPKSSRT TLLMELSCDD SRSLAYLPGE HLGVFPCNQP ALVQGILECV VDNPGPHHTV CLEVLDDSGS YWAKDKRLPP CSLSQALTYF LDITTPPTQL QLQKLARLAT EQAERLRLES LSQPSEYNKW KFTNSPTFLE VLEEFPSLRV PAAFLLSQLP ILKPRYYSIS SSLDHTPAEV HLTVAVVTYR TRDGRGPLHH GVCSTWFSGL KPQDPVPCLV RSVNSFQLPK DPSQPCILIG PGTGIAPFRS FWQQRLHNLK HTGLQGGRMT LLFGCRHPEE DHIYKEEMQE MVQKGVLHEV HTAYSRLPGK PKAYVQDILR QQLAREVLRV LHEEPGHLYV CGNVLMAQDV ACTLKQLLAA KLNLNEEQVE DYFFQLKSQK RYHEDIFGAV FPHGVKKDRA ERPPGDDKL //