(butirosin acyl-carrier protein)—L-glutamate ligase

(butirosin acyl-carrier protein)—L-glutamate ligase (EC 6.2.1.39, [BtrI acyl-carrier protein]—L-glutamate ligase, BtrJ) is an enzyme with systematic name (BtrI acyl-carrier protein):L-glutamate ligase (ADP-forming).^[1] This enzyme catalyses the following chemical reaction

(1) ATP + L-glutamate + BtrI acyl-carrier protein

\rightleftharpoons

ADP + phosphate + L-glutamyl-[BtrI acyl-carrier protein]

(2) ATP + L-glutamate + 4-amino butanoyl-[BtrI acyl-carrier protein]

\rightleftharpoons

ADP + phosphate + 4-(gamma-L-glutamylamino)butanoyl-[BtrI acyl-carrier protein]

This enzyme catalyses two steps in the biosynthesis of the side chain of the aminoglycoside antibiotics of the butirosin family.

References

↑ Li, Y., Llewellyn, N.M., Giri, R., Huang, F. and Spencer, J.B. (2005). "Biosynthesis of the unique amino acid side chain of butirosin: possible protective-group chemistry in an acyl carrier protein-mediated pathway". Chem. Biol. 12 (6): 665–675. doi:10.1016/j.chembiol.2005.04.010. PMID 15975512.

External links

(butirosin acyl-carrier protein)—L-glutamate ligase at the US National Library of Medicine Medical Subject Headings (MeSH)

Enzymes: CO CS and CN ligases (EC 6.1-6.3)

6.1: Carbon-Oxygen	Aminoacyl tRNA synthetase Alanine Arginine Asparagine Aspartate Cysteine D-alanine—poly(phosphoribitol) ligase Glutamate Glutamine Glycine Histidine Isoleucine Leucine Lysine Methionine Phenylalanine Proline Serine Threonine Tryptophan Tyrosine Valine

6.2: Carbon-Sulfur	Succinyl coenzyme A synthetase Acetyl—CoA synthetase Long-chain-fatty-acid—CoA ligase

6.3: Carbon-Nitrogen	Glutamine synthetase Ubiquitin ligase Cullin Von Hippel–Lindau tumor suppressor UBE3A Mdm2 Anaphase-promoting complex UBR1 Glutathione synthetase CTP synthetase Adenylosuccinate synthase Argininosuccinate synthase Holocarboxylase synthetase GMP synthase Asparagine synthetase Carbamoyl phosphate synthetase I II Glutamate–cysteine ligase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

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