EC Number |
Protein Variants |
Reference |
---|
1.5.1.B5 | L52E/V224D/A228K |
DELTA1-pyrroline-2-carboxylate reductase activity is the same as in wild-type enzyme, no alanine dehydrogenase activity |
-, 729750 |
1.5.1.B5 | L52E/V224D/A228K |
site-directed mutagenesis, the mutant shows 2fold increased activity and highly increased specifiicity for substrate DELTA1-pyrrolidine-2-carboxylate as compared to the wild-type enzyme |
-, 742532 |
1.5.1.B5 | L52R/V224D/A228K |
DELTA1-pyrroline-2-carboxylate reductase activity is the same as in wild-type enzyme, no alanine dehydrogenase activity |
-, 729750 |
1.5.1.B5 | L52R/V224D/A228K |
site-directed mutagenesis, the mutant shows slightly increased activity and highly increased specifiicity for substrate DELTA1-pyrrolidine-2-carboxylate and no activity with other substrates in contrast to the wild-type enzyme |
-, 742532 |
1.5.1.B5 | more |
TlLhpI is a fusion of OCC_00362 and OCC_00367 genes by PCR. The gene from Thermococcus litoralis DSM 5473 consistsof two separate open-reading frames (ORFs): OCC_00362 and OCC_00367. When a single A is inserted between A227646 and T227647 in the original genome sequence of T. litoralis DSM 5473, the separate ORFs fuse into a single ORF, and the putative amino acid sequence of is homologous to that of the Thermococcus sibiricus TSIB_0634 gene. Although there is a possibility that this OCD-like protein from Thermococcus litoralis DSM 5473 forms a heterooligomeric structure, the TlLhpI gene is synthesized as a single ORF by sequential steps of PCR using sense and antisense primers and genome DNA of Thermococcus litoralis DSM 5473 as a template |
-, 729750 |
1.5.1.B5 | N168A |
site-directed mutagenesis |
-, 763843 |
1.5.1.B5 | R43A |
site-directed mutagenesis |
-, 763843 |
1.5.1.B5 | V224D/A228K |
12fold enhancement of DELTA1-pyrroline-2-carboxylate reductase activity, 6.7fold enhancement for the oxidization activity for L-proline, no alanine dehydrogenase activity |
-, 729750 |
1.5.1.B5 | V224D/A228K |
site-directed mutagenesis, the mutant shows 10fold increased activity for substrate DELTA1-pyrrolidine-2-carboxylate as compared to the wild-type enzyme |
-, 742532 |