Fig 1. Expression of CSN gene products and CUL1 modification status in various viable csn mutants.
(A) Apical apex tissues from indicated mutants were extracted and the proteins examined by immunoblotting using indicated antibodies. Lower levels of the CSN (CSN3 and CSN5A) and hyper-neddylation of CUL1 were found in csn5a-1, csn5a-2, csn1-10, and csn2-5. (B) Light-grown seedlings (4-day) of indicated genotypes were used for immunoblotting with anti-CSN5B. The antibody strongly reacted with CSN5B, but also cross-reacted with CSN5A. Endogenous CSN5B migrated slower than CSN5A on the SDS-PAGE. See also S1 Fig.