منابع مشابه
Death DNase tied down
elomeric proteins may have an unexpected connection to the mitotic spindle. On page 819, Xu and Blackburn provide evidence that the human homologue of a yeast telomere-binding protein is found on anaphase midzone microtubules. The telomeric functions of the human and yeast versions of this protein, Rif1, have diverged during evolution. In budding yeast, Rif1 is a telomere-bound negative regulat...
متن کاملTied dice
A generalized die is a list (x1; :::; xn) of integers. For integers n 1, a b and s let D(n; a; b; s) be the set of all dice with a x1 ::: xn b and P xi = s. Two dice X and Y are tied if the number of pairs (i; j) with xi < yj equals the number of pairs (i; j) with xi > yj . We prove the following: with one exception (unique up to isomorphism), if X 6= Y 2 D(n; a; b; s) are tied dice neither of ...
متن کاملTied down by shear force: role for Tie1 in postnatal vascular remodeling?
Shear forces play an important role in the regulation of vascular function and structure. Since the initial demonstration of flow-dependent dilation, the critical role of the endothelium in sensing changes in intimal shear stress, and transducing these into changes in vascular tone, has been well recognized.1–3 The moment-to-moment adjustments in arterial diameter involve the release of endothe...
متن کاملTied down: tethering redox proteins to the outer membrane in Neisseria and other genera.
Typically, the redox proteins of respiratory chains in Gram-negative bacteria are localized in the cytoplasmic membrane or in the periplasm. An alternative arrangement appears to be widespread within the betaproteobacterial genus Neisseria, wherein several redox proteins are covalently associated with the outer membrane. In the present paper, we discuss the structural properties of these outer ...
متن کاملParameters Tied to Treewidth
Treewidth is a graph parameter of fundamental importance to algorithmic and structural graph theory. This article surveys several graph parameters tied to treewidth, including separation number, tangle number, well-linked number, and Cartesian tree product number. We review many results in the literature showing these parameters are tied to treewidth. In a number of cases we also improve known ...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 2004
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb1675iti3