Temperature-sensitive mutations made easy: generating conditional mutations by using temperature-sensitive inteins that function within different temperature ranges.

Temperature-sensitive mutations made easy ! Generating conditional mutations by using TS-inteins that function within different temperature ranges

Construction of the Recombinant Plasmid Expressing AID under the Control of Temperature-sensitive Promoter of Bacteriophage Lambda

Background and purpose: Activation-induced cytidine deaminase (AID) is a B-cell specific enzyme responsible for somatic hypermutation (SHM) and class switch recombination (CSR) of antibody genes within the B-cell follicle of peripheral lymphoid organs. Ectopic overexpression of the enzyme leads to mutations in non-B cells and Escherichia coli (E.coli) genes. However, induction of mutations in E...

Development of a positive genetic selection system for inhibition of protein splicing using mycobacterial inteins in Escherichia coli DNA gyrase subunit A.

An intein-based positive genetic selection system was developed to study protein splicing and to provide a selection system with the potential for finding splicing inhibitors. Inteins can be novel antimicrobial targets when present in essential proteins since blocking splicing would kill the organism. For example, pathogenic mycobacteria encode inteins that interrupt DNA gyrase. The gyrase sele...

Temperature-sensitive mutations of the notch locus in Drosophila melanogaster.

Temperature-conditional mutations of the Notch locus were characterized in an attempt to understand the organization of a "complex locus" and the control of its function in development. Among 21 newly induced Notch alleles, about one-half are temperature-conditional for some effects, and three are temperature-sensitive for viability. One temperature-sensitive lethal, l(1)Nts1, is functionally n...

A Survey of New Temperature-Sensitive, Embryonic-Lethal Mutations in C. elegans: 24 Alleles of Thirteen Genes

To study essential maternal gene requirements in the early C. elegans embryo, we have screened for temperature-sensitive, embryonic lethal mutations in an effort to bypass essential zygotic requirements for such genes during larval and adult germline development. With conditional alleles, multiple essential requirements can be examined by shifting at different times from the permissive temperat...