AMP Activated Protein Kinase alpha 1 (5'-AMP-activated Protein Kinase Catalytic Subunit alpha-1, AMPK Subunit alpha-1, AMPKa1, AMPK1, AMPK, MGC33776, MGC57364, PRKAA1) (Sepharose)

AMP-activated protein kinase (AMPK) is highly conserved from yeast to plants and animals and\nplays a key role in the regulation of energy homeostasis (1). AMPK is a heterotrimeric complex composed of a catalytic a subunit and regulatory b and y subunits, each of which is encoded by two or three distinct genes (a1, 2; B1, 2; y1, 2, 3) (2). The kinase is activated by an elevated\nAMP/ATP ratio due to cellular and environmental stress, such as heat shock, hypoxia and ischemia (1). The tumor suppressor LKB1, in association with accessory proteins STRAD and MO25, phosphorylates AMPKa at Thr172 in the activation loop and this phosphorylation is required for AMPK activation (3-5). AMPKa is also phosphorylated at Thr258 and Ser485 (for a1; Ser491 for a2). The upstream kinase and the biological significance of these phosphorylation events have yet to be elucidated (6). The B1 subunit is post-translationally modified by myristoylation and multisite phosphorylation including Ser24/25, Ser96, Ser101,\nSer108 and Ser182 (6,7). Phosphorylation at Ser108 of the B1 subunit seems to be required for the activation of AMPK enzyme, while phosphorylation at Ser24/25 and Ser182 affects AMPK localization (7). Several mutations in AMPKy subunits have been identified, most of which are located in the putative AMP/ATP binding sites (CBS or Bateman domains). Mutations at these sites lead to reduction of AMPK activity and cause glycogen accumulation in heart or skeletal muscle (1,2). Accumulating evidence indicates that AMPK not only regulates the metabolism of fatty acids and glycogen, but also modulates protein synthesis and cell growth through EF2 and TSC2/mTOR pathways, as well as blood flow via eNOS/nNOS (1).\n\nApplications: \nSuitable for use in Immunoprecipitation. Other applications not tested.\n\nRecommended Dilution:\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C. For long-term storage, aliquot and store at 4 degrees C. Do not freeze. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Further dilutions can be made in assay buffer.

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SPECIFICATIONS

Catalog Number

A1475-01M

Size

400ul

Applications

IP

Hosts

Rabbit

Reactivities

Hum, Mouse, Rat, NHP

Form

Supplied as a liquid in 10mM sodium HEPES, pH 7.5, 150mM sodium chloride, 100ug/ml BSA, 50% glycerol. Labeled with Sepharose.

P Type

Mab

Purity

Purified

Isotype

IgG

References

(1) Hardie, D.G. (2004) J Cell Sci 117, 5479-87. (2) Carling, D. (2004) Trends Biochem Sci 29, 18-24.\n(3) Hawley, S.A. et al. (1996) J Biol Chem 271, 27879-87. (4) Lizcano, J.M. et al. (2004) EMBO J 23, 833-43. (5) Shaw, R.J. et al. (2004) Proc Natl Acad Sci USA 101, 3329-35. (6) Woods, A. et al. (2003) J Biol Chem 278, 28434-42. (7) Warden, S.M. et al. (2001) Biochem J 354, 275-83.

Additional Info

Recognizes endogenous levels of total human AMPKa. Species Crossreactivity: monkey, mouse, rat.

Alternative Names

Protein Kinase, AMP-activated, alpha 1 Catalytic Subunit, EC=2.7.11.1