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Structure of PDB 1u33 Chain A Binding Site BS01

Receptor Information
>1u33 Chain A (length=496) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
QYSPNTQQGRTSIVHLFEWRWVDIALECERYLAPKGFGGVQVSPPNENVA
IYNPFRPWWERYQPVSYKLCTRSGNEDEFRNMVTRCNNVGVRIYVDAVIN
HMCGNAVSAGTSSTCGSYFNPGSRDFPAVPYSGWDFNDGKCKTGSGDIEN
YNDATQVRDCRLTGLLDLALEKDYVRSKIAEYMNHLIDIGVAGFRLDASK
HMWPGDIKAILDKLHNLNSNWFPAGSKPFIYQEVIDLGGEPIKSSDYFGN
GRVTEFKYGAKLGTVIRKWNGEKMSYLKNWGEGWGFVPSDRALVFVDNHD
NQRGHGAGGASILTFWDARLYKMAVGFMLAHPYGFTRVMSSYRWPRQFQN
GNDVNDWVGPPNNNGVIKEVTINPDTTCGNDWVCEHRWRQIRNMVIFRNV
VDGQPFTNWYDNGSNQVAFGRGNRGFIVFNNDDWSFSLTLQTGLPAGTYC
DVISGDKINGNCTGIKIYVSDDGKAHFSISNSAEDPFIAIHAESKL
Ligand information
Ligand IDLM2
InChIInChI=1S/C19H34N2O15/c1-32-15-6(3-23)33-19(12(29)9(15)26)36-16-7(4-24)34-18(13(30)10(16)27)35-14-5(2-22)20-17(21-31)11(28)8(14)25/h5-16,18-19,22-31H,2-4H2,1H3,(H,20,21)/t5-,6-,7-,8-,9-,10-,11-,12-,13-,14-,15-,16-,18-,19-/m1/s1
InChIKeyINFXBQXKGPGIEV-PXPLVWFRSA-N
SMILES
SoftwareSMILES
CACTVS 3.385CO[CH]1[CH](O)[CH](O)[CH](O[CH]1CO)O[CH]2[CH](O)[CH](O)[CH](O[CH]2CO)O[CH]3[CH](CO)NC(=NO)[CH](O)[CH]3O
ACDLabs 10.04O(C1C(O)C(O)C(=N\O)\NC1CO)C3OC(C(OC2OC(CO)C(OC)C(O)C2O)C(O)C3O)CO
OpenEye OEToolkits 1.7.5COC1C(OC(C(C1O)O)OC2C(OC(C(C2O)O)OC3C(NC(=NO)C(C3O)O)CO)CO)CO
CACTVS 3.385CO[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@@H]1CO)O[C@H]2[C@H](O)[C@@H](O)[C@H](O[C@@H]2CO)O[C@@H]3[C@@H](CO)NC(=N\O)/[C@H](O)[C@H]3O
OpenEye OEToolkits 1.7.5CO[C@@H]1[C@H](O[C@@H]([C@@H]([C@H]1O)O)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O[C@@H]3[C@H](N/C(=N\O)/[C@@H]([C@H]3O)O)CO)CO)CO
FormulaC19 H34 N2 O15
Name4'-O-METHYL-MALTOSYL-ALPHA (1,4)-(Z, 3S,4S,5R,6R)-3,4,5-TRIHYDROXY-6-HYDROXYMETHYL-PIPERIDIN-2-ONE;
4'-O-METHYL-MALTOSYL-ALPHA (1,4)-D-GLUCONHYDROXIMO-1,5-LACTAM
ChEMBLCHEMBL1234040
DrugBank
ZINCZINC000016051549
PDB chain1u33 Chain A Residue 500 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB1u33 In Situ Extension as an Approach for Identifying Novel alpha-Amylase Inhibitors.
Resolution1.95 Å
Binding residue
(original residue number in PDB)
W58 W59 Y62 Q63 H101 G104 T163 L165 D197 A198 E233 H299 D300 H305
Binding residue
(residue number reindexed from 1)
W58 W59 Y62 Q63 H101 G104 T163 L165 D197 A198 E233 H299 D300 H305
Annotation score1
Binding affinityMOAD: Ki=25uM
PDBbind-CN: -logKd/Ki=4.60,Ki=25uM
Enzymatic activity
Catalytic site (original residue number in PDB) D197 S226 D300
Catalytic site (residue number reindexed from 1) D197 S226 D300
Enzyme Commision number 3.2.1.1: alpha-amylase.
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004556 alpha-amylase activity
GO:0005509 calcium ion binding
GO:0016160 amylase activity
GO:0016798 hydrolase activity, acting on glycosyl bonds
GO:0031404 chloride ion binding
GO:0043169 cation binding
GO:0046872 metal ion binding
Biological Process
GO:0005975 carbohydrate metabolic process
GO:0016052 carbohydrate catabolic process
GO:0044245 polysaccharide digestion
Cellular Component
GO:0005576 extracellular region
GO:0005615 extracellular space
GO:0070062 extracellular exosome

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Molecular Function

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Biological Process

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Cellular Component
External links
PDB RCSB:1u33, PDBe:1u33, PDBj:1u33
PDBsum1u33
PubMed15304511
UniProtP04746|AMYP_HUMAN Pancreatic alpha-amylase (Gene Name=AMY2A)

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