Structure of PDB 1ibj Chain A

Receptor sequence
>1ibjA (length=380) Species: 3702 (Arabidopsis thaliana) [Search protein sequence]
ASVSTLLVNLDNKFDPFDAMSTPLYQTATFKQPSAIENGPYDYTRSGNPT
RDALESLLAKLDKADRAFCFTSGMAALSAVTHLIKNGEEIVAGDDVYGGS
DRLLSQVVPRSGVVVKRVNTTKLDEVAAAIGPQTKLVWLESPTNPRQQIS
DIRKISEMAHAQGALVLVDNSIMSPVLSRPLELGADIVMHSATKFIAGHS
DVMAGVLAVKGEKLAKEVYFLQNSEGSGLAPFDCWLCLRGIKTMALRIEK
QQENARKIAMYLSSHPRVKKVYYAGLPDHPGHHLHFSQAKGAGSVFSFIT
GSVALSKHLVETTKYFSIAVSFGSVKSLISMPCFMSHASIPAEVREARGL
TEDLVRISAGIEDVDDLISDLDIAFKTFPL
3D structure
PDB1ibj The three-dimensional structure of cystathionine beta-lyase from Arabidopsis and its substrate specificity
ChainA
Resolution2.3 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) R129 Y181 D253 K278
Catalytic site (residue number reindexed from 1) R45 Y97 D169 K194
Enzyme Commision number 4.4.1.13: cysteine-S-conjugate beta-lyase.
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 CO3 A S405 R440 S321 R356
BS02 PLP A G157 M158 Y181 E224 D253 S275 T277 K278 M287 F406 G73 M74 Y97 E140 D169 S191 T193 K194 M203 F322
BS03 PLP A Y127 R129 Y43 R45
Gene Ontology
Molecular Function
GO:0016829 lyase activity
GO:0030170 pyridoxal phosphate binding
GO:0042803 protein homodimerization activity
GO:0047804 cysteine-S-conjugate beta-lyase activity
GO:0060090 molecular adaptor activity
Biological Process
GO:0006555 methionine metabolic process
GO:0009086 methionine biosynthetic process
GO:0019279 L-methionine biosynthetic process from L-homoserine via cystathionine
GO:0019346 transsulfuration
GO:0071266 'de novo' L-methionine biosynthetic process
Cellular Component
GO:0009507 chloroplast
GO:0009570 chloroplast stroma

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1ibj, PDBe:1ibj, PDBj:1ibj
PDBsum1ibj
PubMed11402193
UniProtP53780|METC_ARATH Cystathionine beta-lyase, chloroplastic (Gene Name=At3g57050)

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