Table 2. Comparison of sequence identities.
Amino acid sequence identities (%) of HvUGE1, HvUGE2 and HvUGE3 are compared with barley UDP-Xyl synthases (HvUXS1–HvUXS4) [3], barley UDP-Xyl 4-epimerases (HvUXE1–HvUXE3), HvUGDH, HvUGAE (Q. Zhang and G. B. Fincher, unpublished work), rice UGEs (TIGR Data Bank loci Os05g51670, Os09g15420, Os09g35800 and Os08g28730), a human UGE (PDB entry 1hzj) and A. thaliana UGE1 (Swiss-Prot Data Bank entry Q42605).
| Sequence identity (%) | |||
|---|---|---|---|
| HvUGE1 | HvUGE2 | HvUGE3 | |
| HvUGE1 | 100 | ||
| HvUGE2 | 74 | 100 | |
| HvUGE3 | 63 | 60 | 100 |
| HvUXS1 | 26 | 27 | 20 |
| HvUXS2 | 28 | 27 | 26 |
| HvUXS3 | 28 | 29 | 27 |
| HvUXS4 | 29 | 28 | 24 |
| HvUXE1 | 41 | 41 | 37 |
| HvUXE2 | 42 | 42 | 40 |
| HvUXE3 | 40 | 39 | 39 |
| HvUGDH | 21 | 17 | 21 |
| HvUGlcAE | 25 | 27 | 21 |
| Rice Os05g51670 | 90 | 76 | 63 |
| Rice Os09g15420 | 74 | 87 | 60 |
| Rice Os09g35800 | 61 | 62 | 79 |
| Rice Os08g28730 | 76 | 82 | 63 |
| Human UGE | 59 | 55 | 54 |
| A. thaliana UGE1 | 66 | 61 | 72 |