Quick Search:

uzh logo
Browse by:
bullet
bullet
bullet
bullet

Zurich Open Repository and Archive 

Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-20660

Schittenhelm, R B; Chaleckis, R; Lehner, C F (2009). Intrakinetochore localization and essential functional domains of Drosophila Spc105. EMBO Journal, 28(16):2374-2386.

[img]
Preview
Accepted Version
PDF
5MB
[img] PDF (Verlags-PDF) - Registered users only
2MB

Abstract

The kinetochore is assembled during mitotic and meiotic divisions within the centromeric region of chromosomes. It is composed of more than eighty different proteins. Spc105 (also designated as Spc7, KNL-1 or Blinkin in different eukaryotes) is a comparatively large kinetochore protein, which can bind to the Mis12/MIND and Ndc80 complexes and to the spindle assembly checkpoint components Bub1 and BubR1. Our genetic characterization of Drosophila Spc105 shows that a truncated version lacking the rapidly evolving, repetitive central third still provides all essential functions. Moreover, in comparison with Cenp-C that has previously been observed to extend from the inner to the outer kinetochore region, full-length Spc105 is positioned further out and is not similarly extended along the spindle axis. Thus, our results indicate that Spc105 forms neither an extended link connecting inner Cenp-A chromatin with outer kinetochore regions nor a scaffold constraining kinetochore subcomplexes and spindle assembly checkpoint components together into a geometrically rigid supercomplex. Spc105 seems to provide a platform within the outer kinetochore allowing independent assembly of various kinetochore components.

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Molecular Life Sciences
DDC:570 Life sciences; biology
Language:English
Date:9 July 2009
Deposited On:18 Sep 2009 13:19
Last Modified:27 Nov 2013 19:12
Publisher:Nature Publishing Group
ISSN:0261-4189
Publisher DOI:10.1038/emboj.2009.188
PubMed ID:19590494
Citations:Web of Science®. Times Cited: 25
Google Scholar™
Scopus®. Citation Count: 24

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page