Multiple A-type cyclins express sequentially during the cell cycle in Nicotiana tabacum BY2 cells.

ABSTRACT: Four full-length and one partial cDNA clones encoding four different A-type cyclins were isolated from a tobacco S-phase-specific library. The corresponding mRNAs displayed sequential appearance and disappearance during the cell cycle of highly synchronized suspension-cultured tobacco cells. Sequence analysis showed that the plant A-type cyclins can be subdivided into three distinct structural groups that are likely to be represented in every plant species. Two of the isolated tobacco cyclins belonging to the same group were highly expressed throughout S and G2 phases but showed different kinetics of induction at the G1/S transition. Another one belonging to a second group was induced at mid-S phase and expressed until mid-M phase. A similar expression pattern was previously reported for a

SUBMITTER: Reichheld JP 

PROVIDER: S-EPMC19436 | biostudies-literature | 1996 Nov

REPOSITORIES: biostudies-literature