EC Number |
Protein Variants |
Reference |
---|
6.3.2.13 | D392A |
kcat lower than wild-type, Km (meso-2,6-diaminoheptanedioate) and Km (ATP) higher than wild-type, Km (UDP-MurNAc-L-Ala-D-Glu) lower than wild-type, mutant shows hydrolysis of ATP uncoupled from catalysis. The ATP hydrolysis rate is enhanced by at least partial occupation of the uridine nucleotide dipeptide binding site, mutant shows very high activity with all the amino acids, uridine sugar precursors and nucleotides tested compared to wild type and moreover, reaching up to 100% |
716815 |
6.3.2.13 | D399A |
site-directed mutagenesis, inactive mutant |
744440 |
6.3.2.13 | D399N |
site-directed mutagenesis, almost inactive mutant |
744440 |
6.3.2.13 | DELTA1-24 |
N-terminal deletion mutant, kcat comparable to wild-type, Km values comparable to wild-type, mutant shows similar results to the wild-type with all the nucleotides, UDP-MurNAc peptides and amino acids |
716815 |
6.3.2.13 | E220A |
kcat lower than wild-type, Km (ATP) and Km (UDP-MurNAc-L-Ala-D-Glu), Km (meso-2,6-diaminoheptanedioate) lower than wild-type, mutant shows hydrolysis of ATP uncoupled from catalysis. The ATP hydrolysis rate is enhanced by atleast partial occupation of the uridine nucleotide dipeptide binding site, mutant shows very high activity with all the amino acids, uridine sugar precursors and nucleotides tested compared to wild type and moreover, reaching up to 100% |
716815 |
6.3.2.13 | F340A |
site-directed mutagenesis, almost inactive mutant |
744440 |
6.3.2.13 | F340Y |
site-directed mutagenesis, the mutant shows reduced activity with substrate L-alanine and meso-2,6-diaminoheptanedioate compared to wild-type enzyme |
744440 |
6.3.2.13 | H398A |
site-directed mutagenesis, the mutant shows reduced activity with substrate L-alanine and meso-2,6-diaminoheptanedioate compared to wild-type enzyme |
744440 |
6.3.2.13 | H398D |
site-directed mutagenesis, the mutant shows highly reduced activity with substrate L-alanine and meso-2,6-diaminoheptanedioate compared to wild-type enzyme |
744440 |
6.3.2.13 | K157A |
kcat lower than wild-type, Km (meso-2,6-diaminoheptanedioate), Km (UDP-MurNAc-L-Ala-D-Glu) and Km (ATP) lower than wild-type, mutant shows hydrolysis of ATP uncoupled from catalysis. The ATP hydrolysis rate is enhanced by at least partial occupation of the uridine nucleotide dipeptide binding site, mutant shows very high activity with all the amino acids, uridine sugar precursors and nucleotides tested compared to wild type and moreover, reaching up to 100% |
716815 |