P8279
Protocatechuate 3,4-Dioxygenase from Pseudomonas sp.
lyophilized powder, ≥3 units/mg solid
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About This Item
Número de CAS:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54
Productos recomendados
biological source
bacterial (Pseudomonas spp.)
Quality Level
form
lyophilized powder
specific activity
≥3 units/mg solid
mol wt
~700 kDa
shipped in
dry ice
storage temp.
−20°C
General description
Protocatechuate 3,4-Dioxygenase belongs to the non-heme iron family of enzymes. The active site of the enzyme contains Fe3+.
Application
Protocatechuate 3,4-Dioxygenase(PCD), from Pseudomonas sp., is used for the enzymatic determination of choline esterase when coupled with phydroxybenzoate hydroxylase. It is used to improve organic fluorophore-stability in single-molecule experiments and is used to study the metabolism of protocatechuate in Rhizobiaceae.
The enzyme has been used to create an oxygen scavenging system along with protocatechuate (PCA) and Trolox. The enzyme employs a nonheme iron center that catalyzes the conversion of PCA and molecular oxygen into β-carboxy-cis,cis-muconic acid, while the antioxidant Trolox suppresses slow blinking and photobleaching of cyanine dyes. It has been used in the preparation of imaging buffer along with DMB-BSA (dynein motility buffer-BSA), ATP and protocatechuate in single molecule motility assay.
Biochem/physiol Actions
Protocatechuate 3,4-Dioxygenase catalyzes the degradation of 3,4-dihydroxybenzoate (protocatechuate) into β-carboxy-cis,cis-muconate.
Physical properties
Structure : Protein with nonheme iron
Inhibitors : Ag+, Hg++, PCMB
Optimum pH : 9.0
Optimum temperature : 60−65°C
pH Stability : pH 7.0−9.0 (25°C, 72hr)
Thermal stability : below 50°C (pH 6.0, 1hr)
Inhibitors : Ag+, Hg++, PCMB
Optimum pH : 9.0
Optimum temperature : 60−65°C
pH Stability : pH 7.0−9.0 (25°C, 72hr)
Thermal stability : below 50°C (pH 6.0, 1hr)
Unit Definition
One unit will oxidize 1.0 μmole of protocatechuate to 3-carboxy-cis,cis-muconate per min at pH 7.5 at 37 °C.
Physical form
Supplied as lyophilized powder.
Analysis Note
Protein determined by biuret.
Inhibitor
Referencia del producto
Descripción
Precios
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Certificados de análisis (COA)
Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»
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Colin Echeverría Aitken et al.
Biophysical journal, 94(5), 1826-1835 (2007-10-09)
The application of single-molecule fluorescence techniques to complex biological systems places demands on the performance of single fluorophores. We present an enzymatic oxygen scavenging system for improved dye stability in single-molecule experiments. We compared the previously described protocatechuic acid/protocatechuate-3,4-dioxygenase system
Brevibacterium fuscum protocatechuate 3, 4-dioxygenase. Purification, crystallization, and characterization.
Whittaker J W, et al.
The Journal of Biological Chemistry, 259(7), 4466-4475 (1984)
G K Podila et al.
Applied and environmental microbiology, 59(8), 2717-2719 (1993-08-01)
A heterologous gene probe encoding the alpha and beta subunits of the Pseudomonas cepacia protocatechuate 3,4-dioxygenase (PCD) was used to detect its homolog in the genome of Bradyrhizobium japonicum USDA110. Three cosmid clones carrying a 2.2-kb BamHI insert showed high
M Contzen et al.
Molecular microbiology, 41(1), 199-205 (2001-07-17)
The genes for a protocatechuate 3,4-dioxygenase (P34O-II) with the ability to oxidize 4-sulphocatechol were cloned from the 4-aminobenzenesulphonate(sulphanilate)-degrading bacterium Hydrogenophaga intermedia strain S1 (DSMZ 5680). Sequence comparisons of the deduced amino acid sequences of both subunits of the P34O-II from
Nicole Michelotti et al.
Methods in enzymology, 475, 121-148 (2010-07-16)
Recent improvements in methods of single-particle fluorescence tracking have permitted detailed studies of molecular motion on the nanometer scale. In a quest to introduce these tools to the burgeoning field of DNA nanotechnology, we have exploited fluorescence imaging with one-nanometer
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