Structure of PDB 1i48 Chain C

Receptor sequence
>1i48C (length=396) Species: 4097 (Nicotiana tabacum) [Search protein sequence]
YASFLNSDGSVAIHAGERLGRGIVTDAITTPVVNTSAYFFNKTSELIDFK
EKRRASFEYGRYGNPTTVVLEEKISALEGAESTLLMASGMCASTVMLLAL
VPAGGHIVTTTDCYRKTRIFIETILPKMGITATVIDPADVGALELALNQK
KVNLFFTESPTNPFLRCVDIELVSKLCHEKGALVCIDGTFATPLNQKALA
LGADLVLHSATKFLGGHNDVLAGCISGPLKLVSEIRNLHHILGGALNPNA
AYLIIRGMKTLHLRVQQQNSTALRMAEILEAHPKVRHVYYPGLQSHPEHH
IAKKQMTGFGGAVSFEVDGDLLTTAKFVDALKIPYIAPSFGGCESIVDQP
AIMSYWDLSQSDRAKYGIMDNLVRFSFGVEDFDDLKADILQALDSI
3D structure
PDB1i48 Crystal structures of cystathionine gamma-synthase inhibitor complexes rationalize the increased affinity of a novel inhibitor.
ChainC
Resolution3.25 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) R110 Y163 D236 K261
Catalytic site (residue number reindexed from 1) R61 Y114 D187 K212
Enzyme Commision number 4.2.99.9: Transferred entry: 2.5.1.48.
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 PLP C Y108 R110 Y59 R61
BS02 PLP C S137 G138 M139 Y163 D236 S258 T260 K261 F389 S88 G89 M90 Y114 D187 S209 T211 K212 F340
BS03 CCO C Y163 R164 A386 P387 S388 F389 D397 S403 R423 S425 Y114 R115 A337 P338 S339 F340 D348 S354 R374 S376 PDBbind-CN: -logKd/Ki=5.70,Ki=2.0uM
Gene Ontology
Molecular Function
GO:0003962 cystathionine gamma-synthase activity
GO:0030170 pyridoxal phosphate binding
Biological Process
GO:0009086 methionine biosynthetic process
GO:0019346 transsulfuration

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Molecular Function
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Biological Process
External links
PDB RCSB:1i48, PDBe:1i48, PDBj:1i48
PDBsum1i48
PubMed11518531
UniProtQ9ZPL5

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