Structure of PDB 1iyq Chain A

Receptor sequence
>1iyqA (length=261) Species: 562 (Escherichia coli) [Search protein sequence]
NSVQQQLEALEKSSGGRLGVALINTADNSQILYRADERFAMCSTSKVMAA
AAVLKQSESDKHLLNQRVEIKKSDLVNYNPIAEKHVNGTMTLAELGAAAL
QYSDNTAMNKLIAHLGGPDKVTAFARSLGDETFRLDRTAPTLNTAIPGDP
RDTTTPLAMAQTLKNLTLGKALAETQRAQLVTWLKGNTTGSASIRAGLPK
SWVVGDKTGSGDYGTTNDIAVIWPENHAPLVLVTYFTQPEQKAERRRDIL
AAAAKIVTHGF
3D structure
PDB1iyq Acyl-intermediate Structures of the Extended-spectrum Class A beta -Lactamase, Toho-1, in Complex with Cefotaxime, Cephalothin, and Benzylpenicillin.
ChainA
Resolution2.1 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) S70 K73 S130 A166 K234 S237
Catalytic site (residue number reindexed from 1) S43 K46 S103 A139 K207 S210
Enzyme Commision number 3.5.2.6: beta-lactamase.
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 PNM A C69 S70 Y105 S130 N132 N170 T235 G236 S237 C42 S43 Y78 S103 N105 N143 T208 G209 S210
Gene Ontology
Molecular Function
GO:0008800 beta-lactamase activity
GO:0016787 hydrolase activity
Biological Process
GO:0017001 antibiotic catabolic process
GO:0030655 beta-lactam antibiotic catabolic process
GO:0046677 response to antibiotic

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Molecular Function
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Biological Process
External links
PDB RCSB:1iyq, PDBe:1iyq, PDBj:1iyq
PDBsum1iyq
PubMed12221102
UniProtQ47066|BLT1_ECOLX Beta-lactamase Toho-1 (Gene Name=bla)

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