Protein Family Models

This family consists of bacterial antibiotic resistance proteins, which confer resistance to various aminoglycosides they include: aminoglycoside 3'-phosphotransferase or kanamycin kinase / neomycin-kanamycin phosphotransferase and streptomycin 3''-kinase or streptomycin 3''-phosphotransferase. The aminoglycoside phosphotransferases inactivate aminoglycoside antibiotics via phosphorylation [2]. This family also includes homoserine kinase. This family is related to fructosamine kinase Pfam:PF03881. [1]. 2163618. Cloning of aminoglycoside phosphotransferase (APH) gene from antibiotic- producing strain of Bacillus circulans into a high-expression vector, pKK223-3. Purification, properties and location of the enzyme [published erratum appears in Biochem J 1991 Feb 1. Sarwar M, Akhtar M;. Biochem J 1990;268:671-677. [2]. 2167474. PCR cloning of a streptomycin phosphotransferase (aphE) gene from Streptomyces griseus ATCC 12475. Trower MK, Clark KG;. Nucleic Acids Res 1990;18:4615-4615. (from Pfam)

Date:

2024-10-16

Catalyzes the formation of O-phospho-L-homoserine from L-homoserine

Date:

2021-08-11

homoserine kinase catalyzes the ATP-dependent phosphorylation of L-homoserine to L-homoserine phosphate

Date:

2024-11-19

Homoserine kinase is required in the biosynthesis of threonine from aspartate.The member of this family from Pseudomonas aeruginosa was shown by direct assay and complementation to act specifically as a homoserine kinase.

Gene:

thrB

Date:

2021-04-27