Structure of PDB 1cxk Chain A Binding Site BS14

Receptor Information
>1cxk Chain A (length=686) Species: 1397 (Niallia circulans) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
APDTSVSNKQNFSTDVIYQIFTDRFSDGNPANNPTGAAFDGTCTNLRLYC
GGDWQGIINKINDGYLTGMGVTAIWISQPVENIYSIINYSGVNNTAYHGY
WARDFKKTNPAYGTIADFQNLIAAAHAKNIKVIIDFAPNHTSPASSDQPS
FAENGRLYDNGTLLGGYTNDTQNLFHHNGGTDFSTTENGIYKNLYDLADL
NHNNSTVDVYLKDAIKMWLDLGIDGIRMNAVKHMPFGWQKSFMAAVNNYK
PVFTFGQWFLGVNEVSPENHKFANESGMSLLDFRFAQKVRQVFRDNTDNM
YGLKAMLEGSAADYAQVDDQVTFIDNHDMERFHASNANRRKLEQALAFTL
TSRGVPAIYYGTEQYMSGGTDPDNRARIPSFSTSTTAYQVIQKLAPLRKC
NPAIAYGSTQERWINNDVLIYERKFGSNVAVVAVNRNLNAPASISGLVTS
LPQGSYNDVLGGLLNGNTLSVGSGGAASNFTLAAGGTAVWQYTAATATPT
IGHVGPMMAKPGVTITIDGRGFGSSKGTVYFGTTAVSGADITSWEDTQIK
VKIPAVAGGNYNIKVANAAGTASNVYDNFEVLSGDQVSVRFVVNNATTAL
GQNVYLTGSVSELGNWDPAKAIGPMYNQVVYQYPNWYYDVSVPAGKTIEF
KFLKKQGSTVTWEGGSNHTFTAPSSGTATINVNWQP
Ligand information
Ligand IDCA
InChIInChI=1S/Ca/q+2
InChIKeyBHPQYMZQTOCNFJ-UHFFFAOYSA-N
SMILES
SoftwareSMILES
CACTVS 3.341[Ca++]
ACDLabs 10.04
OpenEye OEToolkits 1.5.0		[Ca+2]
FormulaCa
NameCALCIUM ION
ChEMBL
DrugBankDB14577
ZINC
PDB chain1cxk Chain A Residue 688 [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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PDB1cxk X-ray structures along the reaction pathway of cyclodextrin glycosyltransferase elucidate catalysis in the alpha-amylase family.
Resolution2.09 Å
Binding residue
(original residue number in PDB)		D27 N29 P30 N32 N33 G51 D53
Binding residue
(residue number reindexed from 1)		D27 N29 P30 N32 N33 G51 D53
Annotation score4
Enzymatic activity
Catalytic site (original residue number in PDB) D135 R227 N229 Q257 H327 D328
Catalytic site (residue number reindexed from 1) D135 R227 N229 Q257 H327 D328
Enzyme Commision number 2.4.1.19: cyclomaltodextrin glucanotransferase.
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004556 alpha-amylase activity
GO:0016757 glycosyltransferase activity
GO:0030246 carbohydrate binding
GO:0043169 cation binding
GO:0043895 cyclomaltodextrin glucanotransferase activity
GO:0046872 metal ion binding
GO:2001070 starch binding
Biological Process
GO:0005975 carbohydrate metabolic process
Cellular Component
GO:0005576 extracellular region

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Molecular Function
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Biological Process
View graph for
Cellular Component
External links
PDB RCSB:1cxk, PDBe:1cxk, PDBj:1cxk
PDBsum1cxk
PubMed10331869
UniProtP43379|CDGT2_NIACI Cyclomaltodextrin glucanotransferase (Gene Name=cgt)

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