KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
8.61 | - |
4-nitrophenyl-beta-D-xylopyranoside | 45°C | Halalkalibacterium halodurans | |
37.3 | - |
xylotriose | 45°C | Halalkalibacterium halodurans | |
80.14 | - |
xylobiose | 45°C | Halalkalibacterium halodurans |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Halalkalibacterium halodurans | - |
isoform xylB | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
4-nitrophenyl beta-D-xylopyranoside + H2O | - |
Halalkalibacterium halodurans | 4-nitrophenol + beta-D-xylose | - |
? | |
additional information | enzyme has transxylosylation activity leading to formation of O-glycosidic linkages as in 4-nitrophenyl-3-O-beta-D-xylopyranosyl-beta-D-xylopyranoside, 4-nitrophenyl-2-O-beta-D-xylopyranosyl-beta-D-xylopyranoside, 4-nitrophenyl-(4-O-beta-D-xylopyranosyl-2-O-beta-D-xylopyranosyl)-beta-D-xylopyranoside from substrate 4-nitrophenyl-beta-D-xylopyranoside. Compared to xylobiose, xylotriose is a better donor molecule for XylB-mediated transxylosylation of primary alcohols presenting chain length from 1- to 5-carbon atoms | Halalkalibacterium halodurans | ? | - |
? | |
wheat bran + H2O | - |
Halalkalibacterium halodurans | D-xylose + ? | - |
? | |
xylobiose + H2O | - |
Halalkalibacterium halodurans | 2 D-xylose | - |
? | |
xylotriose + H2O | - |
Halalkalibacterium halodurans | 3 D-xylose | - |
? |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.32 | - |
xylobiose | 45°C | Halalkalibacterium halodurans | |
4.91 | - |
xylotriose | 45°C | Halalkalibacterium halodurans | |
5.26 | - |
4-nitrophenyl-beta-D-xylopyranoside | 45°C | Halalkalibacterium halodurans |
kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.004 | - |
xylobiose | 45°C | Halalkalibacterium halodurans | |
0.132 | - |
xylotriose | 45°C | Halalkalibacterium halodurans | |
0.6 | - |
4-nitrophenyl-beta-D-xylopyranoside | 45°C | Halalkalibacterium halodurans |