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deamination
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deamination
deamination (diːæmɪˈneɪʃən) [f. de- + amine + -ation.] The removal of an amino group or groups. Hence deˈaminate v. trans.; deˈaminating ppl. a.1912 Chem. Abstr. VI. 1912 Deamination. Emulsions of liver..when incubated with asparagine, glycocoll or leucine, liberate NH3. 1926 Jrnl. Biol. Chem. LXX. ...
Oxford English Dictionary
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Deamination
Deamination reactions in DNA
Cytosine
Spontaneous deamination is the hydrolysis reaction of cytosine into uracil, releasing ammonia in the process. of deamination.
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Oxidative deamination
Oxidative deamination is a form of deamination that generates α-keto acids and other oxidized products from amine-containing compounds, and occurs primarily Another enzyme responsible for oxidative deamination is monoamine oxidase, which catalyzes the deamination of monoamines via addition of oxygen.
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Is glutamate always involved in the deamination and amination of the other amino acids? For example, are there pathways for the deamination of phenylalanine that simply produce ammonia or pathways for it to be synthes...
For most amino acids, the removal of the α-amino group involves α-ketoglutarate and glutamate. The amino group is first transferred to a-ketoglutarate by transaminases, and the resulting glutamate is then deaminated (via glutamate dehydrogenase) to yield ammonia. 
Transitions can be caused by oxidative deamination and tautomerization. possibly due to the molecular mechanisms that generate them.
5-Methylcytosine is more prone to transition than unmethylated cytosine, due to spontaneous deamination
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tyrosine
tyrosine Chem. (ˈtaɪərəʊsiːn) Also † -in. [irreg. f. Gr. τῡρός cheese + -in1.] An amino-acid that is the precursor of several hormones, including adrenalin; 3-(p-hydroxyphenyl)alanine. Also attrib.1857 Miller Elem. Chem. III. 627 Tyrosine..was obtained by Liebig from the products of the fusion of we...
Oxford English Dictionary
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DDO (gene)
The protein encoded by this gene is a peroxisomal flavoprotein that catalyzes the oxidative deamination of D-aspartate and N-methyl D-aspartate.
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DNA modifications other than 5-mC/5-hmC/5-fC/5-caC in vertebrate genomes? Other than 5-Methylcytosine and the more recently discovered 5-Hydroxymethyl, 5-formil and 5-carboxylcytosine DNA modifications found in DNA se...
Those may include Xanthine and Hypoxanthine (caused by chemical deamination of guanine and adenine).
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5-Hydroxyuracil
5-Hydroxyuracil is an oxidized form of cytosine that is produced by the oxidative deamination of cytosines by reactive oxygen species.
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Protein catabolism
Amino acid degradation
Oxidative deamination is the first step to breaking down the amino acids so that they can be converted to sugars. Eventually, this product will also proceed into oxidative deamination to once again produce alpha-ketoglutarate, an alpha-keto acid that will undergo the
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Deoxyinosine monophosphate
It can be formed by the deamination of the purine base in deoxyadenosine monophosphate (dAMP).
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Cytosine glycol
These, in turn, are thought to undergo deamination to uracil glycol, dehydration to 5-hydroxycytosine, or both deamination and dehydration to 5-hydroxyuracil
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APOBEC1
A1’s deamination of the cytosine base yields uracil, which creates a stop codon in the mRNA. Amino acid replacements at these sites deactivated deamination.
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Hypoxanthine
Hypoxanthine is also a spontaneous deamination product of adenine. Because of its resemblance to guanine, the spontaneous deamination of adenine can lead to an error in DNA transcription/replication, as it base pairs with
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GLUD2
The encoded enzyme catalyzes the reversible oxidative deamination of glutamate to alpha-ketoglutarate.
References
Further reading
EC 1.4.1
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