point mutation

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point mutation

n.
A mutation that changes one nucleotide in a gene or DNA sequence by substitution, deletion, or addition.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.point mutation - (genetics) a mutation due to an intramolecular reorganization of a gene
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
chromosomal mutation, genetic mutation, mutation - (genetics) any event that changes genetic structure; any alteration in the inherited nucleic acid sequence of the genotype of an organism
Translations
mutation ponctuelle
References in periodicals archive ?
The trial will enroll a minimum of 15 patients with SMA Type 1 who are less than six months of age at the time of gene therapy, and who have one or two copies of the SMN2 backup gene as determined by genetic testing and bi-allelic SMN1 gene deletion or point mutations.
Point mutations make up 32,000 of the 50,000 changes in the human genome known to be associated with diseases.
In addition to the duplication mutation, a deletion mutation and point mutations in PMP22 have been described in patients with inherited peripheral neuropathies as well.
Amplification refractory mutation system-polymerase chain reaction was found to be a very sensitive method to find the known point mutations present in beta-globin gene.
Likewise, there was quite good agreement among the pathologists regarding invasive melanomas, which on genetic analysis were found to contain a large number of point mutations alterations of a single genetic letter affecting many genes, as well as a significant number of copy-number alterations, in which sizeable segments of the genome containing genes are either deleted or duplicated.
The CancerSelect gene panels detect genetic alterations in the targeted genes, such as point mutations, copy number alterations and genetic rearrangements.
Single point mutations are detected using NGS, and any challenging exons/regions present within the region of interest are then filled in using traditional Sanger sequencing.
Among the most notable findings were somatic point mutations in the gene ERBB2, which was found in a small but significant subset of the tumours.
The team discovered that Wip1 phosphatase is a key factor that causes point mutations to sprout in human cancers.
Now researchers are using this as a reference genome and exploring novel variants in whole genome from point mutations to structural variations.
Six specimens had an ompA genotype identical to the L2 reference strain L2/434/Bu, and 7 had a novel genotype that differed from the L1 reference strain L1/440 by 9 point mutations.
Carcinomas from patients unresponsive to first-line therapy can be screened retrospectively for the presence of the activating KRAS point mutations in codons 12, 13, and 61 by use of DNA template extracted from paraffin blocks.