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4CVG

Structure of bovine endothelial nitric oxide synthase heme domain (H4B-free) supplemented with 50uM Zn acetate and with poor binding of 6-acetyl-2-amino-7,7-dimethyl-7,8-dihydropteridin-4(3H)-one.

Functional Information from GO Data
ChainGOidnamespacecontents
A0004517molecular_functionnitric-oxide synthase activity
A0006809biological_processnitric oxide biosynthetic process
B0004517molecular_functionnitric-oxide synthase activity
B0006809biological_processnitric oxide biosynthetic process
Functional Information from PDB Data
site_idAC1
Number of Residues16
DetailsBINDING SITE FOR RESIDUE HEM A 500
ChainResidue
ATRP180
AGLU363
ATRP449
ATYR477
AARG700
AHOH2129
AHOH2130
AHOH2131
AARG185
ACYS186
AVAL187
ASER228
APHE355
ASER356
ATRP358
AMET360

site_idAC2
Number of Residues11
DetailsBINDING SITE FOR RESIDUE ARG A 700
ChainResidue
AGLN249
AARG252
APRO336
AVAL338
ATRP358
ATYR359
AGLU363
AASN368
AHEM500
AHOH2063
AHOH2129

site_idAC3
Number of Residues3
DetailsBINDING SITE FOR RESIDUE ACT A 860
ChainResidue
ATRP358
ASER428
AHOH2132

site_idAC4
Number of Residues13
DetailsBINDING SITE FOR RESIDUE HEM B 500
ChainResidue
BTRP180
BARG185
BCYS186
BPHE355
BSER356
BTRP358
BMET360
BGLU363
BTYR477
BARG700
BHOH2095
BHOH2096
BHOH2098

site_idAC5
Number of Residues11
DetailsBINDING SITE FOR RESIDUE ARG B 700
ChainResidue
BGLN249
BTYR333
BVAL338
BTRP358
BTYR359
BGLU363
BASN368
BHEM500
BHOH2051
BHOH2074
BHOH2096

site_idAC6
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ACT B 860
ChainResidue
BTRP358
BVAL420
BSER428
BHOH2099

site_idAC7
Number of Residues2
DetailsBINDING SITE FOR RESIDUE GOL B 880
ChainResidue
BARG367
BHIS373

site_idAC8
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN A 1483
ChainResidue
ACYS96
ACYS101
BCYS96
BCYS101

Functional Information from PROSITE/UniProt
site_idPS60001
Number of Residues8
DetailsNOS Nitric oxide synthase (NOS) signature. RCVGRIqW
ChainResidueDetails
AARG185-TRP192

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"UniProtKB","id":"P35228","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues20
DetailsBinding site: {"evidences":[{"source":"UniProtKB","id":"P29474","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsBinding site: {"description":"axial binding residue","evidences":[{"source":"UniProtKB","id":"P29474","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

239149

PDB entries from 2025-07-23

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