Figure 3. Slp2-a is readily degraded and stabilized by association with Rab27a.
A) Western blots of mouse CTL lysates from heterozygous or homozygous ashen mice prepared and run on SDS–PAGE immediately (fresh lysate) or stored for 6 weeks at −20°C before analysis. The nitrocellulose filter was probed with anti-Slp2-a antibody, washed and reprobed with anti-Rab27a and anti-actin antibodies. WT, wild type. B) Western blots of human CTL lysates derived from healthy donors (lane 1) and patients lacking Munc13-4 (lane 2) or Rab27a (lane 3) probed with antibodies to Slp1 SHD, Slp2-a SHD or actin. Relative migration of molecular weight markers (in kiloDalton) is shown on the left.