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L lysine 6 transaminase

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EC number
  
2.6.1.36

IntEnz
  
IntEnz view

ExPASy
  
NiceZyme view

CAS number
  
9054-68-6

BRENDA
  
BRENDA entry

KEGG
  
KEGG entry

In enzymology, a L-lysine 6-transaminase (EC 2.6.1.36) is an enzyme that catalyzes the chemical reaction

Contents

L-lysine + 2-oxoglutarate 2-aminoadipate 6-semialdehyde + L-glutamate

Thus, the two substrates of this enzyme are L-lysine and 2-oxoglutarate, whereas its two products are 2-aminoadipate 6-semialdehyde and L-glutamate.

This enzyme belongs to the family of transferases, specifically the transaminases, which transfer nitrogenous groups. This enzyme participates in lysine biosynthesis. It employs one cofactor, pyridoxal phosphate.

Nomenclature

The systematic name of this enzyme class is L-lysine:2-oxoglutarate 6-aminotransferase. Other names in common use include

  • lysine 6-aminotransferase,
  • lysine epsilon-aminotransferase,
  • lysine epsilon-transaminase,
  • lysine:2-ketoglutarate 6-aminotransferase,
  • L-lysine-alpha-ketoglutarate aminotransferase, and
  • L-lysine-alpha-ketoglutarate 6-aminotransferase.
  • Structure

    L-lysine 6-transaminase belongs to the aminotransferase class-III family. Crystal structures of L-lysine 6-transaminase reveal a Glu243 “switch” through which the enzyme changes substrate specificities.

    References

    L-lysine 6-transaminase Wikipedia