Cell Signaling Technology

Product Pathways - Cytoskeletal Signaling

MARK4 Antibody #4834

Applications Reactivity Sensitivity MW (kDa) Source
W H M R Endogenous 79 Rabbit

Applications Key:  W=Western Blotting
Reactivity Key:  H=Human  M=Mouse  R=Rat
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

MARK4 Antibody detects endogenous levels of MARK4 protein.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the sequence surrounding Cys514 of human MARK4. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from Raji (human), C2C12 (mouse), and NBT-II (rat) cells, using MARK4 Antibody.

Background

Microtubule associated proteins regulate the stability of microtubules and control processes such as cell polarity/differentiation, neurite outgrowth, cell division and organelle trafficking (1). The MARK (MAP/microtubule affinity-regulating kinases) family (MARK1-4) of serine/threonine kinases was identified based on their ability to phosphorylate microtubule-associated proteins (MAPs) including tau, MAP2 and MAP4 (2-6). MARK proteins phosphorylate MAPs within their microtubule binding domains, causing dissociation of MAPs from microtubules and increased microtubule dynamics (2-4). In the case of tau, phosphorylation has been hypothesized to contribute to the formation of neurofibrillary tangles observed in Alzheimer's disease. Overexpression of MARK leads to hyperphosphorylation of MAPs, morphological changes and cell death (4). The tumor suppressor kinase LKB1 phosphorylates MARK and the closely related AMP-kinases within their T-loops, leading to increased activity (7).

  1. Drubin, D.G. and Nelson, W.J. (1996) Cell 84, 335-44.
  2. Illenberger, S. et al. (1996) J Biol Chem 271, 10834-43.
  3. Drewes, G. et al. (1995) J Biol Chem 270, 7679-88.
  4. Drewes, G. et al. (1997) Cell 89, 297-308.
  5. Kato, T. et al. (2001) Neoplasia 3, 4-9.
  6. Trinczek, B. et al. (2004) J Biol Chem 279, 5915-23.
  7. Lizcano, J.M. et al. (2004) EMBO J 23, 833-43.

Application References

Have you published research involving the use of our products? If so we'd love to hear about it. Please let us know!

Companion Products

For Research Use Only. Not For Use In Diagnostic Procedures.

Products