dna repair
41DNA demethylation — is a process of removal of methyl group from nucleotide in DNA. DNA demethylation could be passive and active. Passive process takes place in the absence of methylation of newly synthesised DNA strands by DNMT1 during several replication rounds… …
42DNA polymerase delta — is an enzyme complex found in eukaryotes that is involved in DNA replication and repair, and it consists of the proliferating cell nuclear antigen (PCNA), the multisubunit replication factor C, and the 4 subunit polymerase complex: POLD1, POLD2,… …
43DNA-Mismatch-Reparaturproteine — (auch: DNA Basenfehlpaarungsreparatur Proteine, MMR Proteine) sind Proteine in nahezu allen Lebewesen, die eine Fehlpaarung in DNA Doppelsträngen erkennen und herausschneiden können. Der Reparaturvorgang wird durch normale, auch in der… …
44DNA gyrase — DNA gyrase, often referred to simply as gyrase, is an enzyme that relieves strain while double stranded DNA is being unwound by helicase. This causes negative supercoiling of the DNA. Bacterial DNA gyrase is the target of many antibiotics,… …
45DNA-directed DNA polymerase — DNA di·rect·ed DNA po·lym·er·ase (dĭ rekґtəd pə limґər ās) [EC 2.7.7.7] any of the enzymes of the transferase class that catalyze the template directed, step by step addition of deoxyribonucleotides to the 3′ end of …
46DNA ligase — DNA li·gase (liґgās) an enzyme of the ligase class that catalyzes the energy driven linkage of a double stranded DNA chain with a free 3′ hydroxyl group to one with a 5′ phosphate group, forming a phosphodiester bond between them …
47DNA, RNA and proteins: The three essential macromolecules of life — All living organisms are dependent on three types of very large molecules for essentially all of their biological functions. These molecules are DNA, RNA and proteins, and are classified as biological macromolecules.[1] Without DNA, RNA and… …
48repair — Restoration of diseased or damaged tissues naturally by healing processes or artificially, as by surgical means. [M.E., fr. O.Fr., fr. L. re paro, fr. re , back, again, + paro, prepare, put in order] chemical r. conversion of a free radical to a… …
49DNA-Reparatur — Übergeordnet DNA Metabolismus Untergeordnet Einzelstrangbruch Reparatur Doppelstrangbruch Reparatur Postreplikations Reparatur Virale …
50DNA-Reparaturmechanismus — Durch DNA Reparatur Mechanismen können Zellen schadhafte Veränderungen der DNA Struktur in einer Zelle beseitigen. Solche Schäden in der DNA können spontan im Verlauf der DNA Replikation oder durch die Einwirkung mutagener Substanzen, extremer… …
