Search results
Results from the WOW.Com Content Network
Gene structure is the organisation of specialised sequence elements within a gene.Genes contain most of the information necessary for living cells to survive and reproduce. [1] [2] In most organisms, genes are made of DNA, where the particular DNA sequence determines the function of the gene.
A structural gene is a gene that codes for any RNA or protein product other than a regulatory factor (i.e. regulatory protein).Structural genes are typically viewed as those containing sequences of DNA corresponding to the amino acids of a protein that will be produced, as long as said protein does not function to regulate gene expression.
DNA mismatch repair protein Mlh1 or MutL protein homolog 1 is a protein that in humans is encoded by the MLH1 gene located on chromosome 3.The gene is commonly associated with hereditary nonpolyposis colorectal cancer.
Early attempts at mutagenesis using radiation or chemical mutagens were non-site-specific, generating random mutations. [2] Analogs of nucleotides and other chemicals were later used to generate localized point mutations, [3] examples of such chemicals are aminopurine, [4] nitrosoguanidine, [5] and bisulfite. [6]
Neuregulin 1, or NRG1, is a gene of the epidermal growth factor family that in humans is encoded by the NRG1 gene. [3] [4] NRG1 is one of four proteins in the neuregulin family that act on the EGFR family of receptors.
A cistron is a region of DNA that is conceptually equivalent to some definitions of a gene, such that the terms are synonymous from certain viewpoints, [1] especially with regard to the molecular gene as contrasted with the Mendelian gene.
In 1999 it was reported that telomeres, which cap the end of chromosomes, terminate in a lariat-like structure termed a T-loop (Telomere-loop). [11] This is a loop of both strands of the chromosome which are joined to an earlier point in the double-stranded DNA by the 3' strand end invading the strand pair to form a D-loop.
The untranslated regions of mRNA became a subject of study as early as the late 1970s, after the first mRNA molecule was fully sequenced. In 1978, the 5' UTR of the human gamma-globin mRNA was fully sequenced. [3]