Glucosidase, alpha

Size

£659.00

SKU:: 169045
Purity:: Purified
Storage Conditions:: -20°C
Supplier:: United States Biological
Host:: Mouse
Immunogen:: Purified acid alpha-glucosidase from human placenta.
Clone:: 43G7
Format:: Supplied as a liquid in PBS, 0.09% sodium azide.
Extra Details:: Lysosomal a-glucosidase, like all other lysosomal enzymes of which the 'life-cycle' has been studied, is synthesized as a large precursor that is processed to mature forms of lower molecular mass. Acid a-glucosidase catalyzes the hydrolysis of the a1 -> 4 and a1 -> 6 glucosidic linkages in glycogen and the a1 -> 4 glucosidic linkage in maltose and artificial substrates likep-nitrophenyl-a -glucoside. The enzyme is deficient in patients with Glycogenosis Type II (Pompe's disease). Pompe disease (also called Glycogen storage disease type II (GSD II) or acid maltase deficiency) is an autosomal recessive metabolic disorder which damages muscle and nerve cells throughout the body. It is caused by an accumulation of glycogen in the lysosome due to deficiency of the lysosomal acid alpha-glucosidase enzyme. It is the only glycogen storage disease with a defect in lysosomal metabolism. The build-up of glycogen causes progressive muscle weakness (myopathy) throughout the body and affects various body tissues, particularly in the heart, skeletal muscles, liver and nervous system. There are exceptions but levels of alpha-glucosidase determines the type of GSD II an individual may have. More alpha glucosidase present in the individuals muscles means symptoms occur later in life and progress more slowly. GSD II is broadly divided into two onset forms based on the age symptoms occur:Infantile-onset form is usually diagnosed at 4-8 months; muscles appear normal but are limp and weak preventing them from lifting their head or rolling over. As the disease progresses heart muscles thicken and progressively fail. Without treatment death usually occurs due to heart failure and respiratory weakness. Late/later onset form occurs later than one to two years and progresses more slowly than Infantile-onset form. One of the first symptoms is a progressive decrease in muscle strength starting with the legs and moving to smaller muscles in the trunk and arms, such as the diaphragm and other muscles required for breathing. Respiratory failure is the most common cause of death. Enlargement of the heart muscles and rhythm disturbances are not significant features but do occur in some cases. The disease is caused by a mutation in a gene (acid alpha-glucosidase: also known as acid maltase) on long arm of chromosome 17 at 17q25.2-q25.3 (base pair 75,689,876 to 75,708,272). The number of mutations described is currently (in 2010) 289 with 67 being non-pathogenic mutations and 197 pathogenic mutations. The remainder are still being evaluated for their association with disease. Applications: Suitable for use in Western Blot and Immunohistochemistry. Other applications not tested. Recommended Dilution: Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Shipping Conditions:: Blue Ice