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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

Quality Level

300

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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D-(+)-Galactose ≥99% (HPLC)

Sigma-Aldrich

G0750

D-(+)-Galactose

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
Jason G McCoy et al.
Biochemistry, 45(10), 3154-3162 (2006-03-08)
The X-ray crystal structure of the At5g18200.1 protein has been determined to a nominal resolution of 2.30 A. The structure has a histidine triad (HIT)-like fold containing two distinct HIT-like motifs. The sequence of At5g18200.1 indicates a distant family relationship
Mohamed Jama et al.
The Journal of molecular diagnostics : JMD, 9(5), 618-623 (2007-09-22)
Classic galactosemia is an autosomal recessive inherited error of galactose metabolism. It is caused by lack of galactose-1-phosphate uridyl transferase, an enzyme that is required to metabolize galactose-1-phosphate to uridine diphosphate galactose. The build up of galactose-1-phosphate is toxic at
E Crushell et al.
Journal of inherited metabolic disease, 32(3), 412-415 (2009-05-07)
Classical galactosaemia is relatively common in Ireland due to a high carrier rate of the Q188R GALT mutation. It is screened for using a bacterial inhibition assay (BIA) for free galactose. A Beutler assay on day one of life is
Nir Dai et al.
Plant physiology, 142(1), 294-304 (2006-07-11)
The Cucurbitaceae translocate a significant portion of their photosynthate as raffinose and stachyose, which are galactosyl derivatives of sucrose. These are initially hydrolyzed by alpha-galactosidase to yield free galactose (Gal) and, accordingly, Gal metabolism is an important pathway in Cucurbitaceae
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