Table 2. Summary of growth phenotype associated with deletion of DAO genes.
| D-amino acid | Deletant showing growth defect on D-amino acid a |
|---|---|
| Ala | Cgdao2 |
| Arg | - b |
| Asn | Triple e , Cndao1 |
| Asp | Cgdao1 c , Cgdao2 c , Cgdao3 c , Cndao1 |
| Cys | Cgdao2 |
| Gln | - b |
| Glu | Cgdao3, Cndao3 |
| Gly | NDL d |
| His | Cgdao2 |
| Ile | - b |
| Leu | Cgdao2 |
| Lys | - b |
| Met | Cgdao2, Cndao3 c |
| Phe | Cgdao2 |
| Pro | Cgdao2 |
| Ser | Cgdao2 |
| Thr | Cgdao2 |
| Trp | Triple e |
| Tyr | Triple e |
| Val | Cgdao2 c |
a All dao mutants of R265 and H99 grew normally on L-amino acids.
b No phenotype.
c Growth was only slightly reduced compared to the wild-type.
d No D, L-isomers.
e Triple deletant of R265 displayed growth defect on D-amino acid.