Structure of PDB 2ybu Chain A

Receptor sequence
>2ybuA (length=376) Species: 9606 (Homo sapiens) [Search protein sequence]
AYQLTCYFTNWAQYRPGLGRFMPDDINPCLCTHLIYAFAGMQNNEITTIE
WNDVTLYQAFNGLKNKNSQLKTLLAIGGWNFGTAPFTAMVSTPENRQTFI
TSVIKFLRQYEFDGLDFDWEYPGSRGSPPQDKHLFTVLVQEMREAFEQEA
KQINKPRLMVTAAVAAGISNIQSGYEIPQLSQYLDYIHVMTYDLHGSWEG
YTGENSPLYKYPTDTGSNAYLNVDYVMNYWKDNGAPAEKLIVGFPTYGHN
FILSNPSNTGIGAPTSGAGPAGPYAKESGIWAYYEICTFLKNGATQGWDA
PQEVPYAYQGNVWVGYDNIKSFDIKAQWLKHNKFGGAMVWAIDLDDFTGT
FCNQGKFPLISTLKKALGLQSASCTA
3D structure
PDB2ybu Analyzing airway inflammation with chemical biology: dissection of acidic mammalian chitinase function with a selective drug-like inhibitor.
ChainA
Resolution2.25 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) D136 D138 E140 Y212
Catalytic site (residue number reindexed from 1) D116 D118 E120 Y192
Enzyme Commision number 3.2.1.14: chitinase.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 CX9 A W31 F58 W99 N100 D138 E140 M210 Y212 W360 W11 F38 W79 N80 D118 E120 M190 Y192 W340 MOAD: Ki=0.42uM
PDBbind-CN: -logKd/Ki=6.38,Ki=0.42uM
BindingDB: IC50=920nM
BS02 CX9 A W99 W218 W79 W198 MOAD: Ki=0.42uM
PDBbind-CN: -logKd/Ki=6.38,Ki=0.42uM
BindingDB: IC50=920nM
Gene Ontology
Molecular Function
GO:0004553 hydrolase activity, hydrolyzing O-glycosyl compounds
GO:0008061 chitin binding
Biological Process
GO:0005975 carbohydrate metabolic process

View graph for
Molecular Function
View graph for
Biological Process
External links
PDB RCSB:2ybu, PDBe:2ybu, PDBj:2ybu
PDBsum2ybu
PubMed21609838
UniProtQ9BZP6|CHIA_HUMAN Acidic mammalian chitinase (Gene Name=CHIA)

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