1NOS: Inducible nitric oxide synthase

Murine inducible nitric oxide synthase oxygenase domain (delta 114), imidazole complex. Determined by X-ray diffraction at 2.1 Å resolution. Released 14 Oct 1998.

Method
X-ray diffraction
Resolution
2.1 Å
Organism
Mus musculus
Chains
1
Atoms
2,921
Mol. weight
45.89 kDa
Ligands
HEM
Released
14 Oct 1998

Explore 1NOS in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1NOS contains 18 α-helices and 21 β-strands across 1 chain. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 18 helices, 21 β-strands

ElementResiduesLengthSheet
α-helix116-1183
β-strand12011
α-helix127-1293
α-helix130-14617
α-helix153-17018
α-helix177-18913
α-helix196-1994
β-strand204-20742
α-helix214-22916
α-helix230-2323
β-strand237-24042
α-helix242-2443
β-strand252-25323
β-strand25712
β-strand26114
β-strand263-26535
β-strand271-27335
α-helix275-2773
α-helix278-2869
β-strand29814
α-helix299-3002
β-strand301-30443
α-helix308-3103
β-strand311-31333
α-helix314-3163
α-helix317-3193
β-strand322-32436
β-strand339-34136
β-strand345-34622
β-strand350-35347
β-strand356-35837
β-strand363-36422
β-strand36718
α-helix414-4229
β-strand42718
α-helix430-44415
β-strand482-48437
β-strand48511
α-helix489-4913

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Inducible nitric oxide synthaseAprotein388Mus musculusP29477 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>1NOS_1 INDUCIBLE NITRIC OXIDE SYNTHASE (chains A)
NPKSLTRGPRDKPTPLEELLPHAIEFINQYYGSFKEAKIEEHLARLEAVTKEIETTGTYQ
LTLDELIFATKMAWRNAPRCIGRIQWSNLQVFDARNCSTAQEMFQHICRHILYATNNGNI
RSAITVFPQRSDGKHDFRLWNSQLIRYAGYQMPDGTIRGDAATLEFTQLCIDLGWKPRYG
RFDVLPLVLQADGQDPEVFEIPPDLVLEVTMEHPKYEWFQELGLKWYALPAVANMLLEVG
GLEFPACPFNGWYMGTEIGVRDFCDTQRYNILEEVGRRMGLETHTLASLWKDRAVTEINV
AVLHSFQKQNVTIMDHHTASESFMKHMQNEYRARGGCPADWIWLVPPVSGSITPVFHQEM
LNYVLSPFYYYQIEPWKTHIWQNEHHHH

Ligands and cofactors

IDNameFormulaCopies
HEMProtoporphyrin IX containing FEC34 H32 Fe N4 O41

Water and common crystallization additives (IMD) are not listed.

Primary citation

The structure of nitric oxide synthase oxygenase domain and inhibitor complexes. Crane, B.R., Arvai, A.S., Gachhui, R. et al. Science (1997) 278:425-431. DOI 10.1126/science.278.5337.425 · PubMed

Other PDB entries of the same protein (UniProt P29477 (AlphaFold model), which also has an AlphaFold model), best resolution first:

Browse structure collections

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