P9752
Phosphoriboisomerase from spinach
Type I, partially purified powder, ≥40 units/mg protein (biuret)
Synonym(s):
D-Ribose-5-phosphate ketol-isomerase
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About This Item
CAS Number:
UNSPSC Code:
12352204
NACRES:
NA.54
MDL number:
Specific activity:
≥40 units/mg protein (biuret)
Biological source:
spinach
biological source
spinach
type
Type I
form
partially purified powder
specific activity
≥40 units/mg protein (biuret)
storage temp.
−20°C
Quality Level
Application
Phosphoriboisomerase is used to study the ribulose monophosphate pathway. Phosphoriboisomerase from spinach is used in enzyme assays to convert ribose 5-phosphate to ribulose 5-phosphate.
Biochem/physiol Actions
Phosphoriboisomerase is responsible for the converstion of ribose 5-phosphate to ribulose 5-phosphate.
Other Notes
One unit will convert 1.0 μmole of D-ribose 5-phosphate to D-ribulose 5-phosphate per min at pH 7.7 at 30 °C.
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Sandrine Mariano et al.
Carbohydrate research, 344(7), 869-880 (2009-03-31)
This study reports syntheses of d-allose 6-phosphate (All6P), D-allulose (or D-psicose) 6-phosphate (Allu6P), and seven D-ribose 5-phosphate isomerase (Rpi) inhibitors. The inhibitors were designed as analogues of the 6-carbon high-energy intermediate postulated for the All6P to Allu6P isomerization reaction (Allpi
Anna Tylki-Szymańska et al.
Postepy biochemii, 57(2), 168-171 (2011-09-15)
Two previously unreported inborn errors of metabolism occur in the reversible part of the pentose phosphate pathway. Deficiency of ribose-5-phosphate isomerase has been described in one patient who suffered from a progressive leukoencephalopathy and developmental delay. Transaldolase deficiency has been
Junho Jung et al.
Acta crystallographica. Section F, Structural biology and crystallization communications, 65(Pt 11), 1141-1144 (2009-11-20)
Rare sugars are used for many industrial and medical purposes and are produced by the interconversion between aldoses and ketoses catalyzed by sugar and sugar-phosphate isomerases. Recently, Clostridium thermocellum d-ribose-5-phosphate isomerase (CTRPI), an aldose-ketose isomerase, was cloned in order to
Soo-Jin Yeom et al.
Biotechnology letters, 32(6), 829-835 (2010-02-16)
The activity of ribose-5-phosphate isomerases (RpiB) from Clostridium difficile for D-ribose isomerization was optimal at pH 7.5 and 40 degrees C, while that from Thermotoga maritima for L-talose isomerization was optimal at pH 8.0 and 70 degrees C. C. difficile
Thomas E Edwards et al.
BMC structural biology, 11, 39-39 (2011-10-15)
Ribose-5-phosphate isomerase is an enzyme that catalyzes the interconversion of ribose-5-phosphate and ribulose-5-phosphate. This family of enzymes naturally occurs in two distinct classes, RpiA and RpiB, which play an important role in the pentose phosphate pathway and nucleotide and co-factor
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