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1KMK

E. coli NifS/CsdB protein at 2.20A with the cysteine perselenide intermediate (residue CSZ).

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
SELENOCYSTEINE LYASEpolymer40644559.61UniProt (P77444)
Pfam (PF00266)
Escherichia coliNIFS/CSDB, SELENOCYSTEINE REDUCTASE, SELENOCYSTEINE BETA-LYASE, SCL
2B
(A)
SELENOCYSTEINEnon-polymer168.11Chemie (SEC)
3C
(A)
PYRIDOXAL-5'-PHOSPHATEnon-polymer247.11Chemie (PLP)
4D
(A)
waterwater18.0485Chemie (HOH)
Sequence modifications
A: 1 - 406 (UniProt: P77444)
PDBExternal DatabaseDetails
Csz 364Cys 364modified residue
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight44559.6
Non-Polymers*Number of molecules2
Total formula weight415.2
All*Total formula weight44974.8
*Water molecules are not included.

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PDB entries from 2025-06-11

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