Structure Variation And Dynamics of the Nuclear Ribosomal Intergenic Spacer Region in Key Gibberella Fujikuroi Complex Species

The intergenic spacer (IGS) region of the ribosomal DNA was cloned and sequenced in eight species within the Gibberella fujikuroi species complex with anamorphs in the genus Fusarium , a group that includes the most relevant toxigenic species. DNA sequence analyses revealed two categories of repeated elements: long repeats and short repeats of 125 and 8 bp, respectively. Long repeats were present in two copies and were conserved in all the species analyzed, whereas different numbers of short repeat elements were observed, leading to species-specific IGS sequences with different length. In Fusarium subglutinans and Fusarium nygamai , these differences seemed to be the result of duplication and deletion events. Here, we propose a model based on unequal crossing over that can explain these processes. The partial IGS sequence of 22 Fusarium proliferatum isolates was also obtained to study variation at the intraspecific level. The results revealed no differences in terms of number or pattern of repeated elements and detected frequent gene conversion events. These results suggest that the homogenization observed at the intraspecific level might not be achieved primarily by unequal crossing-over events but rather by processes associated with recombination such as gene conversion events.

Cell cycle-regulated binding of nuclear proteins to elements within a mouse H3.2 histone gene.

The histone gene family in mammals consists of 15-20 genes for each class of nucleosomal histone protein. These genes are classified as either replication-dependent or -independent in regard to their expression in the cell cycle. The expression of the replication-dependent histone genes increases dramatically as the cell prepares to enter S phase. Using mouse histone genes, we previously identified a coding region activating sequence (CRAS) involved in the upregulation of at least two (H2a and H3) and possibly all nucleosomal replication-dependent histone genes. Mutation of two seven-nucleotide elements, alpha and omega, within the H3 CRAS causes a decrease in expression in stably transfected Chinese hamster ovary cells comparable with the effect seen upon deletion of the entire CRAS. Further, nuclear proteins interact in a highly specific manner with nucleotides within these sequences. Mutation of these elements abolishes DNA/protein interactions in vitro. Here we report that the interactions of nuclear factors with these elements are differentially regulated in the cell cycle and that protein interactions with these elements are dependent on the phosphorylation/dephosphorylation state of the nuclear factors.

Slip casting of nuclear fuel elements.

"Contract no. AT(30-1)-2258"

Elements of nuclear physics /

"To incorporate recent findings ... since the Italan text [Il nucleo atomico] was written, essential modifications have been introduced in the present edition."--Pref.

Major factors affecting burn-up of nuclear fuel elements /

Uranium oxide has been reduced by carbon under vacuum at 2250°C, to yield a product consisting of dendritic uranium carbide in a matrix of uranium.

Elements of medical jurisprudence, interspersed with a copious selection of curious and instructive cases ans analyses of opinions delivered at coroners inquests /

Mode of access: Internet.

Elements of the integral calculus, with a key to the solution of differential equations, and a short table of integrals.

Mode of access: Internet.

The catholic doctrine of a Trinity : proved by above an hundred short and clear arguments, expressed in the terms of the Holy Scripture, compared in a manner entirely new and digested under the four following titles: 1. The divinity of Christ. 2. The divinity of the Holy Ghost. 3. The plurality of persons. 4. The Trinity in unity. With a few reflections, occasionally interspersed, upon some of the Arian writers, particularly Dr. S. Clarke: to which is added, A letter to the common people, in answer to some popular arguments against the Trinity.

A reply to "An appeal to the common sense of all Christian people", by William Hopkins.

The elements of useful knowledge: comprehending, among other interesting particulars, short systems of astronomy, mythology, chronology, and rhetoric; with a brief account of the trial and execution of Louis XVI, and of the late transactions in France ...

Mode of access: Internet.

The beauties of Poor Richard's almanack for the year 1760; being short essays in prose and verse, interspersed with moral hints, wise sayings and entertaining remarks.

Mode of access: Internet.

The fruits of enterprize exhibited in the travels of Belzoni in Egypt and Nubia : interspersed with the observations of a mother to her children : to which is added a short account of the traveller's death /

First published 1821. See Moon, M. John Harris's books, 982(1).

Classical biography: exhibiting alphabetically the proper names, with a short account of the several deities, heros, and other persons mentioned in the ancient classic authors; and a more particular description of the most distinguished characters among the Romans; the whole being interspersed with occasional explanations of words and phrases. Designed chiefly to contribute to the illustration of the Latin classics.

Mode of access: Internet.

A short grammar of the Greek New Testament : for students familiar with the elements of Greek /

Includes indexes.

Elements of Christian theology : containing proofs of the authenticity and inspiration of the Holy Scriptures; a summary of the history of the Jews; a brief statement of the contents of the several books of the Old and New Testaments; a short account of the English translations of the Bible and a scriptural exposition of the Thirty-Nine Articles of Religion designed principally for the use of young students in Divinity /

Vol. 1, 11th ed. Vol. 2, 8th ed.