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EC 1.4.3.13 Details
EC number
1.4.3.13
Accepted name
protein-lysine 6-oxidase
Reaction
[protein]-L-lysine + O2 + H2O = [protein]-(S)-2-amino-6-oxohexanoate + NH3 + H2O2
Other name(s)
lysyl oxidase
Systematic name
protein-L-lysine:oxygen 6-oxidoreductase (deaminating)
CAS registry number
99676-44-5
Comment
Also acts on protein 5-hydroxylysine. This enzyme catalyses the final known enzymic step required for collagen and elastin cross-linking in the biosynthesis of normal mature extracellular matrices [4]. These reactions play an important role for the development, elasticity and extensibility of connective tissue. The enzyme is also active on free amines, such as cadaverine or benzylamine [4,5]. Some isoforms can also use [protein]-N(6)-acetyl-L-lysine as substrate deacetamidating the substrate [6].
History
created 1980, modified 1983
EC Tree
1.4.3.9 created 1972, deleted 1984
1.4.3.17 created 2000, deleted 2003
1.4.3.18 proposed 2000
1.13.11.7 created 1965 as EC 1.13.1.7, transferred 1972 to EC 1.13.11.7, deleted 1980
1.13.11.21 created 1972, deleted 2001