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Results 1 - 4 of 4
EC Number
Substrates
Commentary Substrates
Organism
Products
Commentary (Products)
Reversibility
UDP-beta-L-threo-pentapyranos-4-ulose + L-glutamate
ArnB catalyzes the reversible transfer of the amino group from glutamate to the acceptor, uridine 5'-(beta-L-threo-pentapyranosyl-4''-ulose diphosphate), the intermediate that is synthesized by ArnA from UDP-glucuronic acid.the enzyme is highly selective for glutamate as the amine donor, but the equilibrium constant in the direction of UDP-4-amino-4-deoxy-beta-L-arabinose formation is unfavorable
UDP-4-amino-4-deoxy-beta-L-arabinose + 2-oxoglutarate
-
r
UDP-beta-L-threo-pentapyranos-4-ulose + L-glutamate
the enzyme is highly selective for glutamate as the amine donor, but the equilibrium constant in the direction of UDP-4-amino-4-deoxy-beta-L-arabinose formation is unfavorable. The rate of transamination with L-methionine, L-glutamine, and L-alanine is measurable at 5%, 2%, and 1%, respectively, of the rate observed with L-glutamate
UDP-4-amino-4-deoxy-beta-L-arabinose + 2-oxoglutarate
-
r
UDP-beta-L-threo-pentapyranos-4-ulose + L-glutamate
-
UDP-4-amino-4-deoxy-beta-L-arabinose + 2-oxoglutarate
-
r
UDP-beta-L-threo-pentapyranos-4-ulose + L-glutamate
lipid A modification with 4-amino-4-deoxy-L-arabinose confers on certain pathogenic bacteria, such as Salmonella, resistance to cationic antimicrobial peptides, including those derived from the innate immune system ArnB catalysis of amino group transfer from glutamic acid to the 4''-position of a UDP-linked keto-pyranose molecule to form UDP-4-amino-4-deoxy-L-arabinose represents a key step in the lipid A modification pathway
UDP-4-amino-4-deoxy-beta-L-arabinose + 2-oxoglutarate
-
r
Results 1 - 4 of 4