Structure of PDB 1xh2 Chain A Binding Site BS01

Receptor Information
>1xh2 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
GRVTEFKYGAKLGTVIRKWNGEKMSYLKNWGEGWGFVPSDRALVFVDSHD
NQRGHGAGGASILTFWDARLYKMAVGFMLAHPYGFTRVMSSYRWPRQFQN
GNDVNDWVGPPNNNGVIKEVTINPDTTCGNDWVCEHRWRQIRNMVIFRNV
VDGQPFTNWYDNGSNQVAFGRGNRGFIVFNNDDWSFSLTLQTGLPAGTYC
DVISGDKINGNCTGIKIYVSDDGKAHFSISNSAEDPFIAIHAESKL
Ligand information
Ligand IDARE
InChIInChI=1S/C31H53NO23/c1-7-13(16(39)22(45)29(49-7)54-26-11(5-35)50-28(48)21(44)19(26)42)32-9-2-8(3-33)25(18(41)14(9)37)53-31-24(47)20(43)27(12(6-36)52-31)55-30-23(46)17(40)15(38)10(4-34)51-30/h2,7,9-48H,3-6H2,1H3/t7-,9+,10-,11-,12-,13-,14+,15-,16+,17+,18-,19-,20-,21-,22-,23-,24-,25-,26-,27-,28+,29-,30-,31-/m1/s1
InChIKeyJUCZMZWYUIRMPL-NPPSNIQKSA-N
SMILES
SoftwareSMILES
CACTVS 3.341C[CH]1O[CH](O[CH]2[CH](O)[CH](O)[CH](O)O[CH]2CO)[CH](O)[CH](O)[CH]1N[CH]3C=C(CO)[CH](O[CH]4O[CH](CO)[CH](O[CH]5O[CH](CO)[CH](O)[CH](O)[CH]5O)[CH](O)[CH]4O)[CH](O)[CH]3O
OpenEye OEToolkits 1.5.0CC1C(C(C(C(O1)OC2C(OC(C(C2O)O)O)CO)O)O)NC3C=C(C(C(C3O)O)OC4C(C(C(C(O4)CO)OC5C(C(C(C(O5)CO)O)O)O)O)O)CO
OpenEye OEToolkits 1.5.0C[C@@H]1[C@H]([C@@H]([C@H]([C@H](O1)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O)CO)O)O)N[C@H]3C=C([C@H]([C@@H]([C@H]3O)O)O[C@@H]4[C@@H]([C@H]([C@@H]([C@H](O4)CO)O[C@@H]5[C@@H]([C@H]([C@@H]([C@H](O5)CO)O)O)O)O)O)CO
CACTVS 3.341C[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1N[C@H]3C=C(CO)[C@@H](O[C@H]4O[C@H](CO)[C@@H](O[C@H]5O[C@H](CO)[C@@H](O)[C@H](O)[C@H]5O)[C@H](O)[C@H]4O)[C@H](O)[C@H]3O
ACDLabs 10.04O(C3C(=CC(NC2C(OC(OC1C(O)C(O)C(O)OC1CO)C(O)C2O)C)C(O)C3O)CO)C5OC(C(OC4OC(CO)C(O)C(O)C4O)C(O)C5O)CO
FormulaC31 H53 N O23
NameACARBOSE DERIVED PENTASACCHARIDE;
4-O-(4,6-DIDEOXY-4-{[4-[(4-O-HEXOPYRANOSYLHEXOPYRANOSYL)OXY]-5,6-DIHYDROXY-3-(HYDROXYMETHYL)CYCLOHEX-2-EN-1-YL]AMINO}HE XOPYRANOSYL)HEXOPYRANOSE
ChEMBL
DrugBankDB04453
ZINCZINC000263620623
PDB chain1xh2 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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PDB1xh2 Structural and mechanistic studies of chloride induced activation of human pancreatic alpha-amylase
Resolution2.2 Å
Binding residue
(original residue number in PDB)		W58 W59 Y62 Q63 H101 Y151 T163 L165 D197 A198 K200 H201 E233 H299 D300 H305
Binding residue
(residue number reindexed from 1)		W58 W59 Y62 Q63 H101 Y151 T163 L165 D197 A198 K200 H201 E233 H299 D300 H305
Annotation score1
Enzymatic activity
Catalytic site (original residue number in PDB) D197
Catalytic site (residue number reindexed from 1) D197
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

View graph for
Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:1xh2, PDBe:1xh2, PDBj:1xh2
PDBsum1xh2
PubMed15722449
UniProtP04746|AMYP_HUMAN Pancreatic alpha-amylase (Gene Name=AMY2A)

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