Table 1. Biochemical properties of DAEases and DTEases.
Enzyme | pH | Temp. (°C) | Metal ions | Half-life at 60°C (min) | kcat (1/s) | Km (mM) | kcat/K m (1/mM/min) | d-Allulose (g/L)[d-Fructose, g/L] | Reference | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|
d-Allulose | d-Fructose | d-Allulose | d-Fructose | d-Allulose | d-Fructose | |||||||
A. tumefaciens DAEase | 8.0 | 50 | Mn2+ | 4b | 40 | 35 | 12 | 24 | 205 | 85 | 230 [700] | [9] |
Clostridium sp. DAEase | 8.0 | 65 | Co2+ | 10c | 537 | 273 | 228 | 279 | 141 | 59 | 120 [500] | [10] |
C. bolteae DAEase | 7.0 | 55 | Co2+ | 45b | 49 | 59 | 27 | 60 | 107 | 59 | 216 [750] | [11] |
C. cellulolyticum DAEase | 8.0 | 55 | Co2+ | 408c | 54 | 56 | 17 | 54 | 186 | 63 | 218 [750] | [12] |
C. scindens DAEase | 7.5 | 55 | Mn2+ | 50b | 31 | 9 | 28 | 40 | 65 | 9 | NR | [13] |
Desmospora sp. DAEase | 7.5 | 60 | Co2+ | NRa | 86 | 1,060 | 81 | 549 | 327 | 116 | 143 [500] | [14] |
Dorea sp. DAEase | 6.0 | 70 | Co2+ | 60c, 30b | 1,311 | 508 | 191 | 153 | 412 | 199 | 115 [500] | [15] |
P. cichorii DTEase | 7.5 | 60 | None | NR | NR | NR | NR | NR | NR | NR | 150 [780] | [7] |
R. sphaeroides DTEase | 9.0 | 40 | Mn2+ | NR | NR | NR | NR | NR | NR | NR | 118 [700] | [8] |
Ruminococcus sp. DAEase | 7.5–8.0 | 60 | Mn2+ | 96b | 41 | 59 | 48 | 216 | 51 | 16 | 125 [500] | [16] |
T. primita DAEase | 8.0 | 70 | Co2+ | < 30b | 503 | 292 | 209 | 279 | 144 | 63 | 138 [500] | [17] |
F. plautii DAEase | 7.0 | 65 | Co2+ | 130b | 421 | 342 | 162 | 323 | 156 | 64 | 239 [750] | This study |
aNR, not reported.
b and c represent that the half-life of each enzyme was measured without and with metal ions, respectively.