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1M9Q

human endothelial nitric oxide synthase with 5-nitroindazole bound

Functional Information from GO Data
ChainGOidnamespacecontents
A0004517molecular_functionnitric-oxide synthase activity
A0006809biological_processnitric oxide biosynthetic process
A0020037molecular_functionheme binding
B0004517molecular_functionnitric-oxide synthase activity
B0006809biological_processnitric oxide biosynthetic process
B0020037molecular_functionheme binding
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN A 903
ChainResidue
ACYS94
ACYS99
BCYS94
BCYS99

site_idAC2
Number of Residues15
DetailsBINDING SITE FOR RESIDUE HEM A 901
ChainResidue
APHE353
ASER354
AGLY355
ATRP356
AMET358
AGLU361
ATRP447
APHE473
ATYR475
A5NI907
ATRP178
AARG183
ACYS184
AVAL185
ASER226

site_idAC3
Number of Residues8
DetailsBINDING SITE FOR RESIDUE 5NI B 906
ChainResidue
BPRO334
BVAL336
BPHE353
BTRP356
BTYR357
BMET358
BGLU361
BHEM901

site_idAC4
Number of Residues11
DetailsBINDING SITE FOR RESIDUE HEM B 901
ChainResidue
BTRP178
BARG183
BCYS184
BPHE353
BSER354
BTRP356
BGLU361
BTRP447
BTYR475
B5NI906
BHOH1137

site_idAC5
Number of Residues7
DetailsBINDING SITE FOR RESIDUE 5NI A 907
ChainResidue
AVAL336
APHE353
ATRP356
ATYR357
AMET358
AGLU361
AHEM901

site_idAC6
Number of Residues4
DetailsBINDING SITE FOR RESIDUE IPA B 600
ChainResidue
BGLN189
BTRP356
BVAL418
BSER426

site_idAC7
Number of Residues7
DetailsBINDING SITE FOR RESIDUE IPA A 602
ChainResidue
ATRP279
APRO281
AGLY282
AHOH940
BGLY142
BHIS146
BGLU147

site_idAC8
Number of Residues10
DetailsBINDING SITE FOR RESIDUE MPD A 603
ChainResidue
ATRP445
APHE460
AHIS461
AHOH1120
BSER102
BVAL104
BALA446
BTRP447
BHOH1099
BHOH1130

site_idAC9
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MPD A 604
ChainResidue
AGLY186
AGLN189
ATRP356
AVAL418
ASER426

site_idBC1
Number of Residues7
DetailsBINDING SITE FOR RESIDUE MPD A 605
ChainResidue
AVAL104
AALA446
ATRP447
AHOH1101
AHOH1105
BPHE460
BHIS461

Functional Information from PROSITE/UniProt
site_idPS60001
Number of Residues8
DetailsNOS Nitric oxide synthase (NOS) signature. RCVGRIqW
ChainResidueDetails
AARG183-TRP190

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"10074942","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"12437348","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"18849972","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"25286850","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1M9J","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1M9K","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1M9M","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1M9Q","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1M9R","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3EAH","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3NOS","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4D1O","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4D1P","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues20
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"25286850","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"4D1O","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsBinding site: {"description":"axial binding residue","evidences":[{"source":"PubMed","id":"25286850","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"4D1O","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"10074942","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"25286850","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"3NOS","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4D1O","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4D1P","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues4
DetailsAnnotated By Reference To The Literature 3nos
ChainResidueDetails
ATRP356
AARG187
AGLU361
ACYS184

site_idCSA2
Number of Residues4
DetailsAnnotated By Reference To The Literature 3nos
ChainResidueDetails
BTRP356
BARG187
BGLU361
BCYS184

site_idMCSA1
Number of Residues4
DetailsM-CSA 935
ChainResidueDetails
ACYS184metal ligand
AARG187steric role
ATRP356electrostatic stabiliser
AGLU361electrostatic stabiliser

site_idMCSA2
Number of Residues4
DetailsM-CSA 935
ChainResidueDetails
BCYS184metal ligand
BARG187steric role
BTRP356electrostatic stabiliser
BGLU361electrostatic stabiliser

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PDB entries from 2026-03-25

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