PKD2-TRPC1 association via a TM region in PKD2.
(A) Schematic representation of wild type (1–968; HA-PKD2)
or truncation mutants (HA-PKD2/1–379, 1–643, 1–742, 1–871, and
1–702) of HA-PKD2 and summary of results shown in B.
Black boxes (■) represent TM segments S1–S6. (B)
HEK293T cells were cotransfected with FLAG-tagged bacterial alkaline
phosphatase and HA-PKD2 (lane 1), pCDNA3 vector and F-TRPC1 (lane 2),
F-TRPC1 and HA-PKD2 (lane 3), HA-PKD2/1–379 (lane 4),
HA-PKD2/1–643 (lane 5), HA-PKD2/1–742 (lane 6), HA-PKD2/1–871
(lane 7), or HA-PKD2/1–702 (lane 8). Cells were lysed in IP-500 and
HA-tagged proteins were immunoprecipitated (IP) with α-HA.
Immunocomplexes were determined by immunoblotting (IB) with α-FLAG
(Upper). Expression levels of HA- or FLAG-tagged
proteins are shown (Middle or Lower,
respectively).