Structure of PDB 1kbi Chain B

Receptor sequence
>1kbiB (length=405) Species: 4932 (Saccharomyces cerevisiae) [Search protein sequence]
PGETKEDIARKEQLKSLLPPLDNIINLYDFEYLASQTLTKQAWAYYSSGA
NDEVTHRENHNAYHRIFFKPKILVDVRKVDISTDMLGSHVDVPFYVSATA
LCKLGNPLEGEKDVARGCGQGVTKVPQMISTLASCSPEEIIEAAPSDKQI
QWYQLYVNSDRKITDDLVKNVEKLGVKALFVTVDAPSLGQREKDMKLKFS
NTKTNVEESQGASRALSKFIDPSLTWKDIEELKKKTKLPIVIKGVQRTED
VIKAAEIGVSGVVLSNHGGRQLDFSRAPIEVLAETMPILEQRNLKDKLEV
FVDGGVRRGTDVLKALCLGAKGVGLGRPFLYANSCYGRNGVEKAIEILRD
EIEMSMRLLGVTSIAELKPDLLDLSTLKARTVGVPNDVLYNEVYEGPTLT
EFEDA
3D structure
PDB1kbi Crystallographic study of the recombinant flavin-binding domain of Baker's yeast flavocytochrome b(2): comparison with the intact wild-type enzyme.
ChainB
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) S228 Y254 T280 D282 K349 H373
Catalytic site (residue number reindexed from 1) S130 Y156 T182 D184 K243 H267
Enzyme Commision number 1.1.2.3: L-lactate dehydrogenase (cytochrome).
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 FMN B Y143 Y144 S195 A196 T197 A198 S228 Q252 T280 K349 H373 G374 R376 D409 G410 G411 R413 L431 G432 R433 Y45 Y46 S97 A98 T99 A100 S130 Q154 T182 K243 H267 G268 R270 D303 G304 G305 R307 L325 G326 R327
BS02 PYR B Y143 H373 R376 Y45 H267 R270
Gene Ontology
Molecular Function
GO:0016491 oxidoreductase activity
GO:0020037 heme binding

View graph for
Molecular Function
External links
PDB RCSB:1kbi, PDBe:1kbi, PDBj:1kbi
PDBsum1kbi
PubMed11914072
UniProtP00175|CYB2_YEAST L-lactate dehydrogenase (cytochrome) (Gene Name=CYB2)

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