A novel mutation within the kinase domain of v-abl gene responsible for temperature-sensitive colony-forming ability in soft agar

Virology
T SomaH Sugiyama

Abstract

Mutation sites of unique temperature-sensitive (ts) mutants of Abelson murine leukemia virus(A-MuLV) that exhibited the ts phenotype in colony-forming ability in soft agar, but not in morphological transformation, were determined. Cloning and sequencing analysis of the full viral genomes of five independent ts mutants revealed a total of 10 mutation sites: 3 mutations (bp714, 742, and 817) located in the 5' untranslated region between LTR and gag gene; 4 mutations (bp1227, 1229, 1512, and 1634) in the gag gene; 3 mutations (point mutations at bp2764 and 3265, and 2-base deletion of bp3448 and 3449) in the abl gene. To determine the mutation sites critical for the ts phenotype in colony-forming ability in soft agar, hybrid viruses were constructed by exchanging the corresponding restriction fragments between wild-type and ts A-MuLV. The hybrid virus containing only the point mutation (T-->G) at bp2764 that exchanged leucine with arginine exhibited the ts phenotype in colony-forming ability in soft agar. Thus, a novel mutation within the kinase domain of the abl gene critical for the ts phenotype in colony-forming ability in soft agar was determined here.

Citations


❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.