Structure of PDB 2qpu Chain A Binding Site BS05

Receptor Information
>2qpu Chain A (length=404) Species: 4513 (Hordeum vulgare) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
HQVLFQGFNWESWKQSGGWYNMMMGKVDDIAAAGVTHVWLPPPSHSVSNE
GYMPGRLYDIDASKYGNAAELKSLIGALHGKGVQAIADIVINHRCADYKD
SRGIYCIFEGGTSDGRLDWGPHMICRDDTKYSDGTANLDTGADFAAAPDI
DHLNDRVQRELKEWLLWLKSDLGFDAWRLDFARGYSPEMAKVYIDGTSPS
LAVAEVWDNMATGGDGKPNYDQDAHRQNLVNWVDKVGGAASAGMVFDFTT
KGILNAAVEGELWRLIDPQGKAPGVMGWWPAKAVTFVDNHDTGSTQAMWP
FPSDKVMQGYAYILTHPGIPCIFYDHFFNWGFKDQIAALVAIRKRNGITA
TSALKILMHEGDAYVAEIDGKVVVKIGPRYDVGAVIPAGFVTSAHGNDYA
VWEK
Ligand information
Ligand IDQPU
InChIInChI=1S/C19H35NO12/c1-5-11(23)10(15(27)16(28)12(5)24)20-9-6(2)31-19(17(29)14(9)26)32-18-8(3-21)30-4-7(22)13(18)25/h5-29H,3-4H2,1-2H3/t5-,6+,7-,8+,9+,10-,11+,12+,13+,14-,15-,16-,17+,18+,19+/m0/s1
InChIKeyNJMZSGBZXMLUCS-JMXNYNASSA-N
SMILES
SoftwareSMILES
ACDLabs 10.04O(C1C(OCC(O)C1O)CO)C3OC(C(NC2C(O)C(C)C(O)C(O)C2O)C(O)C3O)C
CACTVS 3.341C[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)CO[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1N[C@H]3[C@H](O)[C@H](C)[C@@H](O)[C@H](O)[C@H]3O
OpenEye OEToolkits 1.5.0CC1C(C(C(C(C1O)O)O)NC2C(OC(C(C2O)O)OC3C(OCC(C3O)O)CO)C)O
OpenEye OEToolkits 1.5.0CC1[C@H]([C@@H]([C@@H]([C@H]([C@@H]1O)O)O)N[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O[C@@H]3[C@H](OC[C@@H]([C@H]3O)O)CO)C)O
CACTVS 3.341C[CH]1O[CH](O[CH]2[CH](O)[CH](O)CO[CH]2CO)[CH](O)[CH](O)[CH]1N[CH]3[CH](O)[CH](C)[CH](O)[CH](O)[CH]3O
FormulaC19 H35 N O12
Name1,5-anhydro-4-O-(4,6-dideoxy-4-{[(1S,2S,3S,4R,5S,6R)-2,3,4,6-tetrahydroxy-5-methylcyclohexyl]amino}-alpha-D-glucopyranosyl)-D-glucitol
ChEMBL
DrugBank
ZINCZINC000064497509
PDB chain2qpu Chain A Residue 4000 [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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PDB2qpu The 'pair of sugar tongs' site on the non-catalytic domain C of barley alpha-amylase participates in substrate binding and activity
Resolution1.7 Å
Binding residue
(original residue number in PDB)		Q227 D234 W278 W279
Binding residue
(residue number reindexed from 1)		Q227 D234 W278 W279
Annotation score1
Binding affinityPDBbind-CN: -logKd/Ki=3.60,Kd=0.25mM
Enzymatic activity
Catalytic site (original residue number in PDB) D180 E205 D291
Catalytic site (residue number reindexed from 1) D180 E205 D291
Enzyme Commision number 3.2.1.1: alpha-amylase.
Gene Ontology
Molecular Function
GO:0004556 alpha-amylase activity
GO:0005509 calcium ion binding
GO:0016798 hydrolase activity, acting on glycosyl bonds
GO:0043169 cation binding
GO:0046872 metal ion binding
Biological Process
GO:0005975 carbohydrate metabolic process
GO:0005983 starch catabolic process
Cellular Component
GO:0005576 extracellular region

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:2qpu, PDBe:2qpu, PDBj:2qpu
PDBsum2qpu
PubMed17803687
UniProtP00693|AMY1_HORVU Alpha-amylase type A isozyme (Gene Name=AMY1.1)

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