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DNase I and DNase1L1 (DNaseX) carry out programmed cell death (apoptosis) and thus protect the human body from the development of tumor cells. Conversely, the absence of DNase enzyme activity leads to the increased formation of tumor cells, as the execution of apoptosis is prevented. [10] [11]
Deoxyribonuclease I (usually called DNase I), is an endonuclease of the DNase family coded by the human gene DNASE1. [5] DNase I is a nuclease that cleaves DNA preferentially at phosphodiester linkages adjacent to a pyrimidine nucleotide, yielding 5'-phosphate-terminated polynucleotides with a free hydroxyl group on position 3', on average producing tetranucleotides.
DNase I Structure: DNase I is a glycoprotein with a molecular weight of 30,000 Da and a carbohydrate chain of 8-10 residues attached to Asn18 (orange). [3] It is an 𝛼,𝛽-protein with two 6-stranded 𝛽-pleated sheets which form the core of the structure. [4] These two core sheets run parallel, and all others run antiparallel.
In genetics, DNase I hypersensitive sites (DHSs) are regions of chromatin that are sensitive to cleavage by the DNase I enzyme. In these specific regions of the genome, chromatin has lost its condensed structure, exposing the DNA and making it accessible. This raises the availability of DNA to degradation by enzymes, such as DNase I.
In genetics a hypersensitive site is a short region of chromatin and is detected by its super sensitivity to cleavage by DNase I and other various nucleases (DNase II and micrococcal nucleases). In a hypersensitive site, the nucleosomal structure is less compacted, increasing the availability of the DNA to binding by proteins, such as ...
A DNase footprinting assay [1] is a DNA footprinting technique from molecular biology/biochemistry that detects DNA-protein interaction using the fact that a protein bound to DNA will often protect that DNA from enzymatic cleavage. This makes it possible to locate a protein binding site on a particular DNA molecule.
1776 13421 Ensembl ENSG00000163687 ENSMUSG00000025279 UniProt Q13609 O55070 RefSeq (mRNA) NM_004944 NM_001256560 NM_007870 RefSeq (protein) NP_001243489 NP_004935 NP_031896 Location (UCSC) Chr 3: 58.19 – 58.21 Mb Chr 14: 14.48 – 14.51 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Deoxyribonuclease gamma (also termed DNase γ, deoxyribonuclease 1L3, DNASE1L3, of ...
Hershey and Chase showed that the introduction of deoxyribonuclease (referred to as DNase), an enzyme that breaks down DNA, into a solution containing the labeled bacteriophages did not introduce any 32 P into the solution. This demonstrated that the phage is resistant to the enzyme while intact.