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The PA1-46184 antibody reacts with TMP21 in human samples.
PA1-46184 has been successfully used in immunohistochemistry and Western blot applications. By Western blot, this antibody detects a ~21 kDa band.
The PA1-46184 antibody was raised against a synthetic peptide made to an internal sequence of the human TMP21 protein (within residues 100-200). [Swiss-Prot# P49755].
TMP21 is a ubiquitously expressed protein that is involved in vesicular targeting and protein transport. More recent experiments have shown that it is also a component in the presenilin complex and modulates the -gamma-secretase but not the epsilon-secretase cleavage activity of the amyloid precursor protein. The presenilin complex is composed of the proteins APH1, nicastrin, and PEN2 in addition to presenilin-1. Together, these proteins cleave the amyloid precursor protein at what is known as the -gamma- and epsilon-sites and can lead to the accumulation of the Abeta cleavage product that is associated with Alzheimer's disease. Co-immunoprecipitation experiments using antibodies against these proteins also yielded TMP21 indicating that TMP21 may play a role in the regulation of this complex. Suppression of TMP21 expression by siRNA in transfected cells caused increased -gamma-secretase activity but not epsilon-secretase activity, and increased Abeta production, demonstrating that TMP21 can modulate -gamma-secretase activity.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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