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P9752

Sigma-Aldrich

Phosphoriboisomerase from spinach

Type I, partially purified powder, ≥40 units/mg protein (biuret)

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Synonym(s):
D-Ribose-5-phosphate ketol-isomerase
CAS Number:
Enzyme Commission number:
MDL number:
NACRES:
NA.54

biological source

spinach

Quality Level

type

Type I

form

partially purified powder

specific activity

≥40 units/mg protein (biuret)

storage temp.

−20°C

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This Item
R8000P9544A3422
Phosphoriboisomerase from spinach Type I, partially purified powder, ≥40 units/mg protein (biuret)

P9752

Phosphoriboisomerase from spinach

Achromopeptidase from bacteria partially purified powder, ≥20,000 units/mg solid

A3422

Achromopeptidase from bacteria

specific activity

≥40 units/mg protein (biuret)

specific activity

0.01-0.1 unit/mg solid

specific activity

≥200 units/mg protein

specific activity

≥20,000 units/mg solid

form

partially purified powder

form

partially purified powder

form

lyophilized powder

form

partially purified powder

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

type

Type I

type

-

type

Type XI

type

-

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.

Unit Definition

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_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Mirjam M C Wamelink et al.
Journal of molecular medicine (Berlin, Germany), 88(9), 931-939 (2010-05-26)
Ribose 5-phosphate isomerase (RPI) deficiency is an enzymopathy of the pentose phosphate pathway. It manifests with progressive leukoencephalopathy and peripheral neuropathy and belongs, with one sole diagnosed case, to the rarest human disorders. The single patient was found compound heterozygous
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
Z Wu et al.
Journal of applied microbiology, 106(1), 41-48 (2009-01-06)
This paper describes optimization of electrotransformation of Mu transposition complexes into Lactococcus lactis cells and identification of genes affecting nisin production. The highest transformation efficiency, 1.1 x 10(2) transformants microg(-1) of input transposon DNA, was achieved when cells were grown
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

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