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Structure of PDB 4ivk Chain A

Receptor sequence
>4ivkA (length=404) Species: 77133 (uncultured bacterium) [Search protein sequence]
AEGPVTATKPKEAGFTSEGLARIDAYLKNEIQAKTMPGAVMMIKRNGETA
YFSSFGLRDPDTKEPMTAETIFRIYSMSKPITTVAAMMLVEEGKLQLDEP
VSKYIPSFANVKVGVETKGENGMALETGPVKRAITIQDLMRHTSGITYGF
VGDGLVKKAYIASNLFDGDFDNAEFAERIAKLPLVYQPGTTWDYGHSTDI
LGRVVEVVSGKSLYQFEKERLLDPLGMKDTGFYVTDPAKKSLVAEAMPND
RKIGGSEMFDPRVQKKWEPGGQGMVSTIGDYARFTQMVLNGGTLDGKRYL
SPKTIAYMGSNHIPQASGIVPGAYYLPGPGVGFGLGFAVRTEAGVTPVEG
SVGDLSWGGAGGTVFWIDPKENLTVVFMAPMVSPRARVWRTLRNIVYGAF
DRLE
3D structure
PDB4ivk Structural basis for the beta-lactamase activity of EstU1, a family VIII carboxylesterase.
ChainA
Resolution1.8 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) S100 K103 Y172 F174 L189 Y218 D223 M271 W381 A384
Catalytic site (residue number reindexed from 1) S76 K79 Y148 F150 L165 Y194 D199 M247 W357 A360
Enzyme Commision number 3.1.1.1: carboxylesterase.
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 CEP A Y99 S100 F174 V175 Y218 I277 Q296 G383 A384 R409 Y75 S76 F150 V151 Y194 I253 Q272 G359 A360 R385 PDBbind-CN: -logKd/Ki=3.85,Ki=140uM
External links

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