The mechanism of DNA repair (DNA repair mechanism).DNA repair does not occur 100% so we can meet and study mutations. DNA repair mechanisms, there are several ways:1. the Photoreactivation is repaired DNA using a light stimulates the functioning of enzymes. So called as this light repair repair will not be found in environment devoid of light, so. If the Fed bacteria that have been found in the dark ultraviolet mutation is higher when there is light.2. Excision Repair mechanisms to repair this in the dark. Called repair or excision repair dark repair of these E. coli is found in both the human and. This process is summarized as follows: procedure. 1. detection and nucleotide base or cutting tide that was destroyed by what was established with endonuclease enzymes mutations. 2. fill the incoming tide in the nucleotide that is cut from step 1 by the enzyme DNA polymerase by using DNA as normal mold. 3. a nucleotide links tide nucleotide molecular new tide in the original DNA ligase enzymes.Excision repair process is 2: Base Excision Repair 2.1 how the repair in case of irregular only one bass bass. By using the DNA glycosylase enzyme activity in the group. Nucleotide Excision Repair 2.2 when there are more abnormal bass 1 bass, or thymine Dai Mercedes. DNA repair process in the State, there are no light. The enzymes required to break nucleotide excinuclease tide or at nucleotide find tide (oligonucleotide) with 10 or more bass. Mismatch Repair enzymes DNA polymerase 3. in addition to the synthesis of DNA and also serves to validate immediately after DNA replication, as they may nevertheless find error occurred, such as the matching base error (mismatched base pairs) DNA replication in the future, and therefore a permanent mutation occurs. To match this error can be solved best by mismatched repair.4. Repair if the repair process Recombination DNA excision repair and how photoreactivation, mismatch repair gene is not possible because of the phr, uvr and the mut occurring mutation, respectively. Requires repair, another called recombination or repair postreplication repair to repair this is to simulate the DNA before the repair was completed, and when a simulating the DNA pieces are still unusual. Not be removed unlike any other of the repair process.5. Repair repair Error-Prone this is an emergency procedure when DNA was severely destroyed. The cell must have a fast response for survival, it's called the SOS response even to repair DNA, it may crash area from base pair wrong. Call a repair this repair error-prone
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