Structure of PDB 3fw3 Chain A Binding Site BS02

Receptor Information
>3fw3 Chain A (length=249) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
WCYEVQAESSNCLVPVKWGGNCQKDRQSPINIVTTKAKVDKKLGRFFFSG
YDKKQTWTVQNNGHSVMMLLENKASISGGGLPAPYQAKQLHLHWSDLPYK
GSEHSLDGEHFAMEMHIVHEKEKPEDEIAVLAFLVEAGTQVNEGFQPLVE
ALSNIPKPEMSTTMAESSLLDLLPKEEKLRHYFRYLGSLTTPTCDEKVVW
TVFREPIQLHREQILAFSQKLYYDKEQTVSMKDNVRPLQQLGQRTVIKS
Ligand information
Ligand IDETS
InChIInChI=1S/C10H16N2O4S3/c1-3-12-8-4-6(2)18(13,14)10-7(8)5-9(17-10)19(11,15)16/h5-6,8,12H,3-4H2,1-2H3,(H2,11,15,16)/t6-,8-/m0/s1
InChIKeyIAVUPMFITXYVAF-XPUUQOCRSA-N
SMILES
SoftwareSMILES
ACDLabs 12.01O=S(=O)(c1sc2c(c1)C(NCC)CC(S2(=O)=O)C)N
OpenEye OEToolkits 1.7.6CCNC1CC(S(=O)(=O)c2c1cc(s2)S(=O)(=O)N)C
OpenEye OEToolkits 1.7.6CCN[C@H]1C[C@@H](S(=O)(=O)c2c1cc(s2)S(=O)(=O)N)C
CACTVS 3.385CCN[CH]1C[CH](C)[S](=O)(=O)c2sc(cc12)[S](N)(=O)=O
CACTVS 3.385CCN[C@H]1C[C@H](C)[S](=O)(=O)c2sc(cc12)[S](N)(=O)=O
FormulaC10 H16 N2 O4 S3
Name(4S-TRANS)-4-(ETHYLAMINO)-5,6-DIHYDRO-6-METHYL-4H-THIENO(2,3-B)THIOPYRAN-2-SULFONAMIDE-7,7-DIOXIDE;
Dorzolamide
ChEMBLCHEMBL218490
DrugBankDB00869
ZINCZINC000001530621
PDB chain3fw3 Chain A Residue 302 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB3fw3 Thioether benzenesulfonamide inhibitors of carbonic anhydrases II and IV: structure-based drug design, synthesis, and biological evaluation.
Resolution1.72 Å
Binding residue
(original residue number in PDB)
Q92 H94 H119 V121 L198 T199 T200
Binding residue
(residue number reindexed from 1)
Q89 H91 H116 V118 L189 T190 T191
Annotation score1
Binding affinityMOAD: ic50=43nM
PDBbind-CN: -logKd/Ki=7.37,IC50=43nM
BindingDB: Ki=8500nM,IC50=32.0nM
Enzymatic activity
Catalytic site (original residue number in PDB) H64 H94 H96 E106 H119 T199
Catalytic site (residue number reindexed from 1) H64 H91 H93 E103 H116 T190
Enzyme Commision number 4.2.1.1: carbonic anhydrase.
Gene Ontology
Molecular Function
GO:0004089 carbonate dehydratase activity
GO:0005515 protein binding
GO:0008270 zinc ion binding
GO:0016829 lyase activity
GO:0046872 metal ion binding
Biological Process
GO:0006730 one-carbon metabolic process
GO:0015701 bicarbonate transport
Cellular Component
GO:0005791 rough endoplasmic reticulum
GO:0005793 endoplasmic reticulum-Golgi intermediate compartment
GO:0005794 Golgi apparatus
GO:0005802 trans-Golgi network
GO:0005886 plasma membrane
GO:0009897 external side of plasma membrane
GO:0009986 cell surface
GO:0016020 membrane
GO:0016323 basolateral plasma membrane
GO:0016324 apical plasma membrane
GO:0030658 transport vesicle membrane
GO:0030667 secretory granule membrane
GO:0031526 brush border membrane
GO:0048471 perinuclear region of cytoplasm
GO:0070062 extracellular exosome
GO:0098552 side of membrane

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Molecular Function

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Biological Process

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Cellular Component
External links
PDB RCSB:3fw3, PDBe:3fw3, PDBj:3fw3
PDBsum3fw3
PubMed20363633
UniProtP22748|CAH4_HUMAN Carbonic anhydrase 4 (Gene Name=CA4)

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