transamination


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to transamination: deamination, Oxidative deamination

transamination

 [trans″am-ĭ-na´shun]
the reversible exchange of amino groups between different amino acids.

trans·am·i·na·tion

(trans'am-i-nā'shŭn),
The reaction between an amino acid and an α-keto acid through which the amino group is transferred from the former to the latter; in certain cases the reaction may be between an amino acid and an aldehyde (for example, glutamate with glutamate semialdehyde via ornithine transaminase).

transamination

/trans·am·i·na·tion/ (-am″ĭ-na´shun) the reversible exchange of amino groups between different amino acids.

transamination

(trăns-ăm′ə-nā′shən, trănz-)
n.
1. Transfer of an amino group from one chemical compound to another.
2. Transposition of an amino group within a chemical compound.

transamination1

[-am′inā′shən]
the reaction between an amino acid and an alpha-keto acid in which the enzyme transaminase induces transfer of the amino group to the alpha-ketoacid.

transamination

Chemistry
A biochemical reaction in which an amino group is transferred from an amino acid—which becomes an alpha-keto acid upon losing the amino group—to an alpha-keto acid—which becomes an amino acid once it gains the transferred amino group.
 
Medspeak
A near-extinct term for:
(1) Resuscitation of a stillborn infant;
(2) Mouth-to-mouth resuscitation.

trans·am·i·na·tion

(tranz'am-i-nā'shŭn)
The reaction between an amino acid and an α-keto acid through which the amino group is transferred from the former to the latter.

transamination

The reaction in which the amino group of an amino acid is transferred to a ketoacid, converting it into an amino acid.
Transaminationclick for a larger image
Fig. 300 Transamination . The transfer of an amino group to form a different amino acid.

transamination

the process by which amino groups are transferred from one AMINO ACID to form another, using a keto acid as an intermediary. The mechanism takes place in the liver, and is important in the breakdown of excess amino acids to form keto acids and in the formation of new amino acids (perhaps not available in the diet) from keto acids. An example is shown in Fig. 300. ESSENTIAL AMINO ACIDS cannot be produced by transamination.

trans·am·i·na·tion

(tranz'am-i-nā'shŭn)
The reaction between an amino acid and an α-keto acid through which the amino group is transferred from the former to the latter.

transamination (tranzam´inā´shən),

n the reaction between an α-ketoacid and an amino acid in which the amino group moves to the α-ketoacid, creating a new amino acid and a new ketoacid.

transamination

the reversible exchange of amino groups between different amino acids.
References in periodicals archive ?
Table 1 Distribution of the types of chemical transformations in the core metabolome assembly Reaction type Building blocks pathways Oxidation 8 Reduction 13 Amination/Transamination * 5 + 16 * Hydration 19 Dehydration 17 Phosphorylation 12 Dephosphorylation 17 Group Transfer/SH-Transfer ** 36 + 2 ** Decarboxylation 9 Carboxylation 2 Isomerization 9 Total 165 * Denotes transamination reactions that do not utilize [NH.
Transamination is an important initial step in flavor development.
Endogenous causes of hyperoxaluria include a deficiency of pyridoxine, which is a cofactor in glyoxalate transamination, and ethylene glycol ingestion.
Glufosinate-ammonium inhibits glutamine synthetase (GS), an enzyme critical to the metabolism of nitrogen by plants, causing a greatly reduced availability of amino acids required for photorespiratory glyoxylate transamination.
The decrease in plasma alanine concentration (33%) may be because alanine, which is a transamination product of pyruvate, is released by muscle before being processed by the liver into gluconeogenesis.
This difference appears to be due to preferential removal of "light" (14N-containing) amine groups by the enzymes responsible for amino acid deamination and transamination (Macko et al.
The MHA resembles Met in chemical structure, with a hydroxyl group instead of an amino group, and it can be equimolar transformed to Met by transamination.
Threonine does not undergo transamination and there is no synthesis of threonine by the pigs.
Griffith, "Cysteinesulfinate metabolism: altered partitioning between transamination and decarboxylation following administration of [beta]-methyleneaspartate," The Journal of Biological Chemistry, vol.
Glutamate can stimulate pyruvate transamination, which converts lactate into alanine via pyruvate in the ischemic myocardium and removes the inhibition of a key glycolytic enzyme caused by lactate accumulation.
On the other hand, the increase of the enzyme in the serum may be attributed to the process of either deamination or transamination caused by the plant leaf dust.
The elevation of these enzymes as a whole indicates the utilization of amino acids while the elevation in transaminases suggests the existence of a heavy drain on metabolites through cypermethrin stress since stress conditions in general induce an elevation in the transamination pathway (Awasthi et al.