Structure of PDB 1iki Chain A

Receptor sequence
>1ikiA (length=345) Species: 31952 (Streptomyces sp. R61) [Search protein sequence]
LPAPDDTGLQAVLHTALSQGAPGAMVRVDDNGTIHQLSEGVADRATGRAI
TTTDRFRVGSVTKSFSAVVLLQLVDEGKLDLDASVNTYLPGLLPDDRITV
RQVMSHRSGLYDYTNDMFAQTVPGFESVRNKVFSYQDLITLSLKHGVTNA
PGAAYSYSNTNFVVAGMLIEKLTGHSVATEYQNRIFTPLNLTDTFYVHPD
TVIPGTHANGYLTPDEAGGALVDSTEQTVSWAQSAGAVISSTQDLDTFFS
ALMSGQLMSAAQLAQMQQWTTVNSTQGYGLGLRRRDLSCGISVYGHTGTV
QGYYTYAFASKDGKRSVTALANTSNNVNVLNTMARTLESAFCGKP
3D structure
PDB1iki Structures of two kinetic intermediates reveal species specificity of penicillin-binding proteins.
ChainA
Resolution1.25 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) S62 K65 D114 T116 V130 Y159 N161 V165 T227 H298 G304
Catalytic site (residue number reindexed from 1) S60 K63 D112 T114 V128 Y157 N159 V163 T225 H296 G302
Enzyme Commision number 3.4.16.4: serine-type D-Ala-D-Ala carboxypeptidase.
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 REY A G61 S62 F120 T123 Y159 N161 W233 Q303 S326 N327 G59 S60 F118 T121 Y157 N159 W231 Q301 S324 N325
BS02 DAL A S62 Y159 R285 H298 T299 G300 T301 S60 Y157 R283 H296 T297 G298 T299
Gene Ontology
Molecular Function
GO:0004180 carboxypeptidase activity
GO:0009002 serine-type D-Ala-D-Ala carboxypeptidase activity
Biological Process
GO:0006508 proteolysis
GO:0008360 regulation of cell shape
GO:0009252 peptidoglycan biosynthetic process
GO:0071555 cell wall organization
Cellular Component
GO:0005576 extracellular region

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Molecular Function
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Cellular Component
External links
PDB RCSB:1iki, PDBe:1iki, PDBj:1iki
PDBsum1iki
PubMed12215418
UniProtP15555|DAC_STRSR D-alanyl-D-alanine carboxypeptidase

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