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Category:GO:0016840 ! carbon-nitrogen lyase activity
name: carbon-nitrogen lyase activity
namespace: molecular_function
def: "Catalysis of the release of ammonia or one of its derivatives, with the formation of a double bond or ring. Enzymes with this activity may catalyze the actual elimination of the ammonia, amine or amide, e.g. CH-CH(-NH-R) = C=CH- + NH2-R. Others, however, catalyze elimination of another component, e.g. water, which is followed by spontaneous reactions that lead to breakage of the C-N bond, e.g. L-serine ammonia-lyase (EC:4.3.1.17), so that the overall reaction is C(-OH)-CH(-NH2) = CH2-CO- + NH3, i.e. an elimination with rearrangement. The sub-subclasses of EC:4.3 are the ammonia-lyases (EC:4.3.1), lyases acting on amides, amidines, etc. (EC:4.3.2), the amine-lyases (EC:4.3.3), and other carbon-nitrogen lyases (EC:4.3.99)." [EC:4.3.-.-]
comment: Note that enzymes of class EC:4.3.99.- should also be annotated to this term.
subset: gosubset_prok
synonym: "other carbon-nitrogen lyase activity" NARROW []
xref: EC:4.3
is_a: GO:0016829 ! lyase activity
AmiGO
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