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Cell cycle-dependent accumulation of a kinesin-like protein, KatB/C, in synchronized tobacco BY-2 cells

โœ Scribed by Hisayuki Mitsui; Seiichiro Hasezawa; Toshiyuki Nagata; Hideo Takahashi

Publisher
Springer
Year
1996
Tongue
English
Weight
653 KB
Volume
30
Category
Article
ISSN
0167-4412

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โœฆ Synopsis

Immunoblot analysis with antibodies prepared against highly purified recombinant truncated kinesin-like proteins, KatB(5-249) and KatC(207-754), encoded by the katB and katC genes of Arabidopsis thaliana revealed the presence of a kinesin-like polypeptide, termed KatB/C, in cultured tobacco BY-2 cells. The KatB/C polypeptide cosedimented with microtubules in the presence of a nonhydrolyzable ATP analogue and was released from microtubules in the presence of ATP, both of which are characteristics of kinesin proteins. The amount of KatB/C polypeptide in synchronous BY-2 cells increased during M phase of the cell cycle. Microtubule-based structures present in cells at M phase, such as the spindle and phragmoplast, may be the site of action of the KatB/C protein.

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