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Literature summary for 1.5.5.2 extracted from

  • Huijbers, M.M.; van Berkel, W.J.
    High yields of active Thermus thermophilus proline dehydrogenase are obtained using maltose-binding protein as a solubility tag (2015), Biotechnol. J., 10, 395-403 .
    View publication on PubMed

Application

Application Comment Organism
synthesis ProDH is of interest for practical applications because the proline imino acid can serve as a building block for a wide range of peptides and antibiotics Thermus thermophilus

Cloned(Commentary)

Cloned (Comment) Organism
gene TT_C1214, recombinant expression of functional and soluble MBP-tagged enzyme in Escherichia coli TOP10 cells. The MBP tag inhibits the self-association of TtProDH, preventing to a large extent the formation of insoluble protein aggregates Thermus thermophilus

Inhibitors

Inhibitors Comment Organism Structure
GuHCl enzyme unfolding at 1 M, 0.5 M is not enough for proper unfolding. The fusion protein forms visible aggregates due to unfolding of MBP Thermus thermophilus

Localization

Localization Comment Organism GeneOntology No. Textmining
mitochondrial membrane a membrane-associated protein Thermus thermophilus 31966
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
additional information
-
the MBP tag inhibits the self-association of TtProDH, preventing to a large extent the formation of insoluble protein aggregates Thermus thermophilus
78675
-
recombinant MBP-tagged enzyme, sequence calculation Thermus thermophilus
78677
-
recombinant MBP-tagged enzyme, mass spectrometry Thermus thermophilus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
L-proline + a quinone Thermus thermophilus
-
(S)-1-pyrroline-5-carboxylate + a quinol
-
?
L-proline + a quinone Thermus thermophilus HB27 / ATCC BAA-163 / DSM 7039
-
(S)-1-pyrroline-5-carboxylate + a quinol
-
?

Organism

Organism UniProt Comment Textmining
Thermus thermophilus Q72IB8
-
-
Thermus thermophilus HB27 / ATCC BAA-163 / DSM 7039 Q72IB8
-
-

Purification (Commentary)

Purification (Comment) Organism
recombinant MBP-tagged enzyme from Escherichia coli, gel filtration, and tag cleavage by trypsin, followed by ultrafiltration Thermus thermophilus

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
4
-
purified recombinant MBP-tagged enzyme, pH 8.0, 25°C Thermus thermophilus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
L-proline + 2,6-dichlorphenol-indophenol
-
Thermus thermophilus (S)-1-pyrroline-5-carboxylate + reduced 2,6-dichlorphenol-indophenol
-
?
L-proline + 2,6-dichlorphenol-indophenol
-
Thermus thermophilus HB27 / ATCC BAA-163 / DSM 7039 (S)-1-pyrroline-5-carboxylate + reduced 2,6-dichlorphenol-indophenol
-
?
L-proline + a quinone
-
Thermus thermophilus (S)-1-pyrroline-5-carboxylate + a quinol
-
?
L-proline + a quinone a FAD-dependent reaction Thermus thermophilus (S)-1-pyrroline-5-carboxylate + a quinol
-
?
L-proline + a quinone
-
Thermus thermophilus HB27 / ATCC BAA-163 / DSM 7039 (S)-1-pyrroline-5-carboxylate + a quinol
-
?
L-proline + a quinone a FAD-dependent reaction Thermus thermophilus HB27 / ATCC BAA-163 / DSM 7039 (S)-1-pyrroline-5-carboxylate + a quinol
-
?

Subunits

Subunits Comment Organism
More recombinant wild-type detagged enzyme and recombinant wild-type MBP-tagged enzyme both form oligomers. Peptide mapping Thermus thermophilus

Synonyms

Synonyms Comment Organism
PRODH
-
Thermus thermophilus
TtProDH
-
Thermus thermophilus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
assay at Thermus thermophilus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
additional information
-
enzyme unfolding experiments using recombinant MBP-tagged enzyme in 20 mM Hepes, pH 8.0, at 60-95°C, the MBP-tagged enzyme unfolds at lower temperature around 56°C due to unfolding of the MBP tag Thermus thermophilus
90
-
with the native enzyme, rapid loss of activity only occurs at temperatures above 90°C Thermus thermophilus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8
-
assay at Thermus thermophilus

Cofactor

Cofactor Comment Organism Structure
FAD enzyme-bound, dependent on. Addition of excess FAD hardly improves the enzyme activity, confirming that the enzyme is fully saturated with FAD Thermus thermophilus

General Information

General Information Comment Organism
metabolism proline dehydrogenase (ProDH) catalyzes the FAD-dependent oxidation of proline to DELTA1-pyrroline-5-carboxylate, the first step of proline catabolism in many organisms Thermus thermophilus