Structure of PDB 1ktw Chain A Binding Site BS04

Receptor Information
>1ktw Chain A (length=457) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
VSPKTYKDADFYVAPTQQDVNYDLVDDFGANGNDTSDDSNALQRAINAIS
RKPNGGTLLIPNGTYHFLGIQMKSNVHIRVESDVIIKPTWNGDGKNHRLF
EVGVNNIVRNFSFQGLGNGFLVDFKDSRDKNLAVFKLGDVRNYKISNFTI
DDNKTIFASILVDVTERNGRLHWSRNGIIERIKQNNALFGYGLIQTYGAD
NILFRNLHSEGGIALRMETDNLLMKNYKQGGIRNIFADNIRCSKGLAAVM
FGPHFMKNGDVQVTNVSSVSCGSAVRSDSGFVELFSPTDEVHTRQSWKQA
VESKLGRGCAQTPYAWAARVTQKDACLDKAKLEYGIEPGSFGTVKVFDVT
ARFGYNADLKQDQLDYFSTSNPMCKRVCLPTKEQWSKQGQIYIGPSLAAV
IDTTPETSKYDYDVKTFNVKRINFPVNSHKTIDTNTESSRVCNYYGMSEC
SSSRWER
Ligand information
Ligand IDDGS
InChIInChI=1S/C6H10O8S/c7-3-2-1-12-4(3)5(6(8)13-2)14-15(9,10)11/h2-8H,1H2,(H,9,10,11)/t2-,3+,4+,5-,6+/m1/s1
InChIKeyBBGPRYFPTZDJIZ-PHYPRBDBSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.7.0C1[C@@H]2[C@@H]([C@H](O1)[C@H]([C@H](O2)O)OS(=O)(=O)O)O
CACTVS 3.352O[CH]1O[CH]2CO[CH]([CH]2O)[CH]1O[S](O)(=O)=O
ACDLabs 11.02O=S(=O)(O)OC1C2OCC(OC1O)C2O
OpenEye OEToolkits 1.7.0C1C2C(C(O1)C(C(O2)O)OS(=O)(=O)O)O
CACTVS 3.352O[C@H]1O[C@@H]2CO[C@@H]([C@H]2O)[C@H]1O[S](O)(=O)=O
FormulaC6 H10 O8 S
Name3,6-anhydro-2-O-sulfo-alpha-D-galactopyranose;
3,6-ANHYDRO-D-GALACTOSE-2-SULFATE;
3,6-anhydro-2-O-sulfo-alpha-D-galactose;
3,6-anhydro-2-O-sulfo-D-galactose;
3,6-anhydro-2-O-sulfo-galactose
ChEMBL
DrugBankDB01981
ZINCZINC000005851134
PDB chain1ktw Chain D Residue 2 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1ktw The Structural Bases of the Processive Degradation of iota-Carrageenan, a Main Cell Wall Polysaccharide of Red Algae.
Resolution2.0 Å
Binding residue
(original residue number in PDB)
Y341 A342 G423 Q424
Binding residue
(residue number reindexed from 1)
Y314 A315 G389 Q390
Annotation score1
Enzymatic activity
Enzyme Commision number 3.2.1.157: iota-carrageenase.
Gene Ontology
Molecular Function
GO:0016798 hydrolase activity, acting on glycosyl bonds
GO:0033952 iota-carrageenase activity
Biological Process
GO:0000272 polysaccharide catabolic process
GO:0071555 cell wall organization
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:1ktw, PDBe:1ktw, PDBj:1ktw
PDBsum1ktw
PubMed14623184
UniProtQ9F5I8|CGIA_ALTMA Iota-carrageenase (Gene Name=cgiA)

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