Recombinant Human MAP kinase-activating death domain protein (MADD), partial

Differentially expressed in normal and neoplastic cells; Insulinoma glucagonoma clone 20; Rab3 GDP/GTP exchange factor; RabGEF; Rab3 GDP/GTP exchange protein; Rab3GEP

Guanyl-nucleotide exchange factor that regulates small GTPases of the Rab family. Converts GDP-bound inactive form of RAB27A and RAB27B to the GTP-bound active forms. Converts GDP-bound inactive form of RAB3A, RAB3C and RAB3D to the GTP-bound active forms, GTPases involved in synaptic vesicle exocytosis and vesicle secretion. Plays a role in synaptic vesicle formation and in vesicle trafficking at the neuromuscular junction. Involved in up-regulating a post-docking step of synaptic exocytosis in central synapses. Probably by binding to the motor proteins KIF1B and KIF1A, mediates motor-dependent transport of GTP-RAB3A-positive vesicles to the presynaptic nerve terminals. Plays a role in TNFA-mediated activation of the MAPK pathway, including ERK1/2. May link TNFRSF1A with MAP kinase activation. May be involved in the regulation of TNFA-induced apoptosis.

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.