A role for the octameric ring protein, Translin, in mitotic cell division.

Abstract:

:The octameric ring protein, Translin, demonstrates marked similarities to the family of helicase enzymes regarding its quaternary organization and dimerization of subunits. Here we show that the level of Translin closely parallels the proliferative state in various cell types. Expression is periodic during the cell cycle, with protein synthesis becoming maximal in the S and mitosis phases, consistent with a role in cell division. Moreover, induced overexpression of Translin was found to accelerate cell proliferation. Confocal microscopic analysis revealed that Translin is localized at the centrosomes at prophase and the mitotic spindle at metaphase, then translocating to the spindle midbodies during cytokinesis. This novel localization is attributable to specific interactions with microtubules of the mitotic spindles, and especially gamma-tubulin. The results suggest that Translin participates in processes ensuring the segregation of chromosomes and cytokinesis.

journal_name

FEBS Lett

journal_title

FEBS letters

authors

Ishida R,Okado H,Sato H,Shionoiri C,Aoki K,Kasai M

doi

10.1016/s0014-5793(02)03095-8

keywords:

subject

Has Abstract

pub_date

2002-08-14 00:00:00

pages

105-10

issue

1-3

eissn

0014-5793

issn

1873-3468

pii

S0014579302030958

journal_volume

525

pub_type

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