p60 katanin is ubiquitous in vertebrate cells and
tissues. Total SDS-soluble proteins (lanes 1–9) from a variety of
cells and tissues were subjected to immunoblot analysis
with the human p60 katanin antibody. Lane 1, MSU1.1, human fibroblast;
lane 2, Hela; lane 3, A6, Xenopus; lane 4, N2A, mouse
neuroblastoma; lane 5, PtK-1, marsupial; lane 6, DT40, chicken B cell;
lane 7, Fox NY, mouse myeloma; lane 8, CSF Xenopus egg
extract; and lane 9, adult mouse brain. Mouse brains were homogenized
in the presence of Triton X-100 and subjected to centrifugation. The
Triton-soluble supernatant was analyzed in lane 11. The
Triton-insoluble material was extracted with SDS, and the SDS-soluble
fraction was analyzed in lane 10. Note that the higher molecular weight
species in brain is enriched in the Triton-insoluble, SDS-soluble
fraction (lane 10).