EC Number | Cloned (Comment) | Organism |
---|---|---|
2.4.2.6 | gene ndt, DNA and amino acid sequence determination and analysis, recombinant expression of enzyme NDT in Escherichia coli strain BL21(DE3), coexpression with gene cda encoding the cytidine deaminase from Escherichia coli | Lactobacillus helveticus |
EC Number | Protein Variants | Comment | Organism |
---|---|---|---|
2.4.2.6 | G10S | site-directed mutagenesis, the NDT mutant displays improved activity for dideoxynucleoside | Lactobacillus helveticus |
2.4.2.6 | additional information | establishment of a site-saturation mutagenesis (SSM) library for LhNDT, analysis of enzyme-substrate interactions and amino acids near the NDT substrate-binding sites. Site-directed mutagenesis of resdieues Gly10, Ala11 and Leu96, high-throughput screening | Lactobacillus helveticus |
EC Number | Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
2.4.2.6 | 2-deoxy-D-ribosyl-base1 + base2 | Lactobacillus helveticus | - |
2-deoxy-D-ribosyl-base2 + base1 | - |
? |
EC Number | Organism | UniProt | Comment | Textmining |
---|---|---|---|---|
2.4.2.6 | Lactobacillus helveticus | Q8RLY4 | - |
- |
EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|---|
2.4.2.6 | 0.13 | - |
purified recombinant wild-type enzyme, pH 6.0, 37°C, substrate 2',3'-dideoxyinosine | Lactobacillus helveticus |
2.4.2.6 | 0.86 | - |
purified recombinant mutant NDT G10S, pH 6.0, 37°C, substrate 2',3'-dideoxyinosine | Lactobacillus helveticus |
EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
2.4.2.6 | 2'-deoxyinosine + cytosine | - |
Lactobacillus helveticus | 2'-deoxycytidine + hypoxanthine | - |
? | |
2.4.2.6 | 2'-deoxythymidine + 5-azacytosine | - |
Lactobacillus helveticus | 5-aza-2'-deoxycytidine + thymine | - |
? | |
2.4.2.6 | 2-deoxy-D-ribosyl-base1 + base2 | - |
Lactobacillus helveticus | 2-deoxy-D-ribosyl-base2 + base1 | - |
? | |
2.4.2.6 | additional information | NDT is highly specific for 20-deoxynucleoside because Glu98 of NDT forms a hydrogen bond with 3'-OH of 2'-deoxynucleoside. When the sugar donor is a ribonucleoside, Glu98 forms a hydrogen bond with 2'-OH of ribose and the enzyme is inactive. Usage of an indophenol colorimetric assay | Lactobacillus helveticus | ? | - |
- |
EC Number | Synonyms | Comment | Organism |
---|---|---|---|
2.4.2.6 | LhNDT | - |
Lactobacillus helveticus |
2.4.2.6 | NDT | - |
Lactobacillus helveticus |
2.4.2.6 | nucleoside deoxyribosyltransferase II | - |
Lactobacillus helveticus |
EC Number | Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|---|
2.4.2.6 | 37 | - |
assay at | Lactobacillus helveticus |
EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|---|
2.4.2.6 | 6 | - |
assay at | Lactobacillus helveticus |
EC Number | General Information | Comment | Organism |
---|---|---|---|
2.4.2.6 | additional information | homologous modeling submitting the three-dimensional structure of LlNDT (PDB ID 1F8X), and ligand interaction analysis, modeling of active site involved in the enzyme-substrate interaction | Lactobacillus helveticus |
2.4.2.6 | physiological function | nucleoside deoxyribosyltransferase II (NDT) catalyzes the transglycosylation reaction of the 2'-deoxyribose moiety between purine and/or pyrimidine bases | Lactobacillus helveticus |