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G4256

Sigma-Aldrich

Galactose-1-phosphate Uridyltransferase from galactose-adapted yeast

Type IV, lyophilized powder, 20-60 units/mg protein (modified Warburg-Christian)

Synonym(s):

GALT, UDP glucose:α-D-galactose-1-phosphate uridyltransferase

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About This Item

CAS Number:
9016-11-9
Enzyme Commission number:
2.7.7.12 (BRENDA, IUBMB)
MDL number:
MFCD00131120
UNSPSC Code:
12352204
NACRES:
NA.54

type

Type IV

form

lyophilized powder

specific activity

20-60 units/mg protein (modified Warburg-Christian)

composition

Protein, 15-35%

foreign activity

6-phosphogluconate dehydrogenase ≤0.5%
UDP glucose pyrophosphorylase and galactokinase ≤0.2%

storage temp.

−20°C

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General description

Research area: Cell Signaling

Galactose-1-phosphate uridyltransferase (GALT) is a galactose metabolizing enzyme that facilitates the simultaneous conversion of uridine diphosphoglucose (UDP-glucose) and galactose-1-phosphate (gal-1P) to uridine diphosphogalactose (UDP-galactose) and glucose-1-phosphate. Classic Galactosemia (CG) is an inherited metabolic condition caused by deficiency of GALT activity. GALT gene is mapped to human chromosome 9p13. Deficiency of GALT results in type 1 galactosemia.

Application

Galactose-1-phosphate Uridyltransferase from galactose-adapted yeast has been used to perform enzyme assays.

Unit Definition

One unit will form 1.0 μmole of glucose 1-phosphate from UDP-glucose, galactose 1-phosphate and NADP+ per min at pH 8.7 at 25 °C as detected by a coupled system using phosphoglucomutase.

Physical form

Contains buffer salts as citrate and reduced glutathione

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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E Laumonier et al.
Journal francais d'ophtalmologie, 28(5), 490-496 (2005-06-25)
Galactosemia is an inherited metabolic disorder due to a defect in one of the three enzymes required to fully metabolize the galactose in glucose: the galactose 1-phosphate uridyltransferase. Because this enzyme is present in the normal foetal liver since the
Ana C Bonatto et al.
Protein expression and purification, 55(2), 293-299 (2007-06-08)
GlnD is a bifunctional uridylyltransferase/uridylyl-removing enzyme that has a central role in the general nitrogen regulatory system NTR. In enterobacteria, GlnD uridylylates the PII proteins GlnB and GlnK under low levels of fixed nitrogen or ammonium. Under high ammonium levels
Ji-Seon Jeong et al.
Journal of chromatography. A, 1140(1-2), 157-162 (2006-12-13)
We developed a new non-derivatization analytical method for the determination of galactose in the diagnosis of galactosemia by high-performance anion-exchange chromatography (HPAEC)-pulsed amperometric detection (PAD). With an anion-exchange column, the analytes were separated efficiently using 3mM NaOH containing 1mM NaOAc
Galactose 1-phosphate uridylyltransferase. Isolation of a uridylyl-enzyme intermediate.
L J Wong et al.
The Journal of biological chemistry, 249(7), 2322-2324 (1974-04-10)
I Saira Mian et al.
BMC bioinformatics, 7, 305-305 (2006-06-20)
REX1 and REX2 are protein components of the RNA editing complex (the editosome) and function as exouridylylases. The exact roles of REX1 and REX2 in the editosome are unclear and the consequences of the presence of two related proteins are
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