A suggested positive control is mouse brain tissue lysate.
PA5-20316 can be used with blocking peptide PEP-0436.
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.
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Protein Aliases: 21 kDa transmembrane trafficking protein; 21 kDa transmembrane-trafficking protein; integral membrane protein Tmp21-I (p23); p23; p24 family protein delta-1; p24delta; p24delta1; Protein TMED10; S31I125; S31III125; testicular tissue protein Li 206; Tmp-21-I; Transmembrane emp24 domain-containing protein 10; transmembrane emp24-like trafficking protein 10; Transmembrane protein Tmp21; transmembrane trafficking protein; transmembrane trafficking protein 21
Gene Aliases: 1110014C03Rik; p23; P24(DELTA); p24d1; p24delta1; S31I125; S31III125; TMED10; Tmp-21-I; TMP21
Molecular Function: vesicle coat protein