Structure of PDB 1kmk Chain A

Receptor sequence
>1kmkA (length=405) Species: 562 (Escherichia coli) [Search protein sequence]
IFSVDKVRADFPVLSREVNGLPLAYLDSAASAQKPSQVIDAEAEFYRHGY
AAVHRGIHTLSAQATEKMENVRKRASLFINARSAEELVFVRGTTEGINLV
ANSWGNSNVRAGDNIIISQMEHHANIVPWQMLCARVGAELRVIPLNPDGT
LQLETLPTLFDEKTRLLAITHVSNVLGTENPLAEMITLAHQHGAKVLVDG
AQAVMHHPVDVQALDCDFYVFSGHKLYGPTGIGILYVKEALLQEMPPWEG
GGSMIATVSLSEGTTWTKAPWRFEAGTPNTGGIIGLGAALEYVSALGLNN
IAEYEQNLMHYALSQLESVPDLTLYGPQNRLGVIAFNLGKHHAYDVGSFL
DNYGIAVRTGHHCAMPLMAYYNVPAMCRASLAMYNTHEEVDRLVTGLQRI
HRLLG
3D structure
PDB1kmk Analysis of the E. coli NifS CsdB protein at 2.0 A reveals the structural basis for perselenide and persulfide intermediate formation.
ChainA
Resolution2.2 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) H123 D200 A202 Q203 K226 R359 C364
Catalytic site (residue number reindexed from 1) H122 D199 A201 Q202 K225 R358 C363
Enzyme Commision number 2.8.1.7: cysteine desulfurase.
3.13.1.-
4.4.1.16: selenocysteine 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 SEC A H123 N175 K226 R359 X364 R379 H122 N174 K225 R358 X363 R378
BS02 PLP A T94 T95 H123 D200 A202 Q203 S223 H225 K226 T93 T94 H122 D199 A201 Q202 S222 H224 K225
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0005515 protein binding
GO:0008826 cysteine sulfinate desulfinase activity
GO:0009000 selenocysteine lyase activity
GO:0016740 transferase activity
GO:0016787 hydrolase activity
GO:0016829 lyase activity
GO:0030170 pyridoxal phosphate binding
GO:0031071 cysteine desulfurase activity
GO:0042803 protein homodimerization activity
Biological Process
GO:0001887 selenium compound metabolic process
GO:0006534 cysteine metabolic process
GO:0006790 sulfur compound metabolic process
GO:0016226 iron-sulfur cluster assembly
Cellular Component
GO:0005737 cytoplasm

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1kmk, PDBe:1kmk, PDBj:1kmk
PDBsum1kmk
PubMed11827487
UniProtP77444|SUFS_ECOLI Cysteine desulfurase (Gene Name=sufS)

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