PLC-γ1 directly binds to phosphorylated Nephrin
Tyr(P)-1204. A, recombinant GST or GST-Nephrin-CD was bound to
glutathione-Sepharose beads and incubated with or without Fyn. After washing,
the beads were incubated with recombinant His-tagged N- or C-SH2 domain of
PLC-γ1, and bound proteins were immunoblotted with anti-His antibody.
CBB, Coomassie Brilliant Blue staining. WB, Western blot.
B, phosphorylated Nephrin peptides were immobilized to SulfoLink
coupling gel to pull down His-PLC-γ1-N-SH2. PLC-γ1-N-SH2
specifically bound to phospho-Tyr-1204. C, phosphorylated or
nonphosphorylated Nephrin Tyr-1204 peptides were immobilized to coupling gel
and incubated with HEK293T cell lysates. The bound proteins were immunoblotted
with anti-PLC-γ1 and anti-Nck. D, GST-Nephrin-CD wild type or
Y1204F were phosphorylated by Fyn and immobilized to glutathione-Sepharose.
The beads were incubated with HEK293T lysates, and bound proteins were
analyzed by Western blotting for PLC-γ1.E, HEK293T cells were
transfected with indicated vectors, and anti-FLAG immunoprecipitates
(IP) and cell lysates were analyzed by Western blotting for FLAG and
Nephrin.