Mutants of Streptomyces roseosporus that express enhanced recombination within partially homologous genes

min after exposure of cells to ionizing radiation. The numbers of these foci are comparable to the numbers of induced DNA double-strand breaks. When DNA double-strand breaks are introduced into specific partial nuclear volumes of cells by means of a pulsed microbeam laser, �-H2AX foci form

We introduce the concept of the quandle partial derivatives, and use them to define extreme chains that yield homological operations. We apply this to a large class of finite and infinite quandles to show, in particular, that they have nontrivial elements in the third and fourth quandle homology.

-Priddy-QuillenSegal theorems. CONFIGURATION SPACES WITH PARTIALLY SUMMABLE LABELS AND HOMOLOGY THEORIES Dedicated to the memory of Professor Katsuo Kawakubo Kazuhisa SHIMAKAWA Abstract. It is shown that any subset of a topological abelian monoid gives rise to a generalized homology theory that is closely related

We study a Leech homology of a locally bounded free partially commutative monoid M(E,I). Given a contravariant natural system of abelian groups F on M(E,I) we build a precubical set T(E,I) with a homological system of abelian groups F and prove that the Leech homology groups Hn

It is shown that any topological abelian partial monoid gives rise to a generalized homology theory that is closely related to the notion of labeled configuration space. Applications of the main theorem include generalizations of the classical Dold-Thom and the Barratt-Priddy-Quillen-Segal theorems.

We have devised an algorithm for finding partial homologies among a set of nucleotide sequences. The algorithm and other Improvements have been Incorporated Into a commonly used computer program for the analysis of sequence data.

models and provide insights into sequence/ structure/function relationships. Manually curated models are organized hierarchically if they describe domain families that are clearly related by common descent. As CDD also imports domain family models from a variety of external sources, it is a partially re

Abstract. We partially solve the conjecture by A.Shumakovitch that the Khovanov homology of a prime, non-split link in S 3 has a non-trivial torsion part. We give a size restriction on the Khovanov homology of almost alternating links. We relate the Khovanov homology of the connected sum of a link

The partial isometry homology groups Hn defined in Power [17] and a related chain complex homology CH are calculated for various triangular operator algebras, including the disc algebra. These invariants are closely connected with K-theory. Simplicial homotopy reductions are used to identify