cyanoalanine nitrilase | |||||||||
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Identifiers | |||||||||
EC no. | 3.5.5.4 | ||||||||
CAS no. | 85638-44-4 | ||||||||
Databases | |||||||||
IntEnz | IntEnz view | ||||||||
BRENDA | BRENDA entry | ||||||||
ExPASy | NiceZyme view | ||||||||
KEGG | KEGG entry | ||||||||
MetaCyc | metabolic pathway | ||||||||
PRIAM | profile | ||||||||
PDB structures | RCSB PDB PDBe PDBsum | ||||||||
Gene Ontology | AmiGO / QuickGO | ||||||||
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In enzymology, a cyanoalanine nitrilase (EC 3.5.5.4) is an enzyme that catalyzes the chemical reaction
Thus, the two substrates of this enzyme are 3-cyano-L-alanine and H2O, whereas its two products are L-aspartate and NH3.
This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in nitriles. The systematic name of this enzyme class is 3-cyano-L-alanine aminohydrolase. This enzyme is also called beta-cyanoalanine nitrilase. This enzyme participates in cyanoamino acid metabolism.
Nitrilase enzymes catalyse the hydrolysis of nitriles to carboxylic acids and ammonia, without the formation of "free" amide intermediates. Nitrilases are involved in natural product biosynthesis and post translational modifications in plants, animals, fungi and certain prokaryotes. Nitrilases can also be used as catalysts in preparative organic chemistry. Among others, nitrilases have been used for the resolution of racemic mixtures. Nitrilase should not be confused with nitrile hydratase which hydrolyses nitriles to amides. Nitrile hydratases are almost invariably co-expressed with an amidase, which converts the amide to the carboxylic acid. Consequently, it can sometimes be difficult to distinguish nitrilase activity from nitrile hydratase plus amidase activity.
The enzyme cystathionine γ-lyase (EC 4.4.1.1, CTH or CSE; also cystathionase; systematic name L-cystathionine cysteine-lyase (deaminating; 2-oxobutanoate-forming)) breaks down cystathionine into cysteine, 2-oxobutanoate (α-ketobutyrate), and ammonia:
In enzymology, a D-aspartate oxidase (EC 1.4.3.1) is an enzyme that catalyzes the chemical reaction
In enzymology, a D-glutamate(D-aspartate) oxidase (EC 1.4.3.15) is an enzyme that catalyzes the chemical reaction
In enzymology, a L-aspartate oxidase (EC 1.4.3.16) is an enzyme that catalyzes the chemical reaction
The enzyme aspartate ammonia-lyase (EC 4.3.1.1) catalyzes the chemical reaction
The enzyme aspartate 1-decarboxylase (EC 4.1.1.11) catalyzes the chemical reaction
In enzymology, an aspartate 4-decarboxylase (EC 4.1.1.12) is an enzyme that catalyzes the chemical reaction
In enzymology, an aspartate—ammonia ligase (EC 6.3.1.1) is an enzyme that catalyzes the chemical reaction
The enzyme 3-cyanoalanine hydratase (EC 4.2.1.65) catalyzes the chemical reaction
In enzymology, an aliphatic nitrilase also known as aliphatic nitrile aminohydrolase (EC 3.5.5.7) is an enzyme that catalyzes the hydrolysis of nitriles to carboxylic acids:
In enzymology, an arylacetonitrilase (EC 3.5.5.5) is an enzyme that catalyzes the chemical reaction
In enzymology, a beta-ureidopropionase (EC 3.5.1.6) is an enzyme that catalyzes the chemical reaction
In enzymology, a bromoxynil nitrilase (EC 3.5.5.6) is an enzyme that catalyzes the chemical reaction
In enzymology, a formimidoylaspartate deiminase (EC 3.5.3.5) is an enzyme that catalyzes the chemical reaction
In enzymology, a glutamin-(asparagin-)ase (EC 3.5.1.38) is an enzyme that catalyzes the chemical reaction
In enzymology, an omega-amidase (EC 3.5.1.3) is an enzyme that catalyzes the chemical reaction
In enzymology, a ricinine nitrilase (EC 3.5.5.2) is an enzyme that catalyzes the chemical reaction
In enzymology, an ureidosuccinase (EC 3.5.1.7) is an enzyme that catalyzes the chemical reaction
Cyanoalanine (more accurately β-Cyano-L-alanine) is an amino acid with the formula NCCH2CH(NH2)CO2H. Like most amino acids, it exists as a tautomer NCCH2CH(NH3+)CO2−. It is a rare example of a nitrile-containing amino acid. It is a white, water-soluble solid. It can be found in common vetch seeds.