i need help with the deamination of dna bases mechanisms
2. Oxidation of nitrogenous bases is one type of DNA damage. a. What is the most common mechanism for repairing oxidized bases? (1 mark) b. Outline the steps involved in the mechanism you listed in part (a). (3 marks) C. How is this mechanism able to repair other types of damaged bases (for example, deamination of cytosine)? (1 mark)
What is the mechanism by which base analogs cause mutations? A. Deamination of cytosine leading to uracil B. Intercalating between adjacent bases in DNA C. Oxidation of guanine Mispairing with normal bases D. Depurination of guanines
need help on biology 26. The two main mechanisms of epigenetic aging are: A. Telomere shortening and DNA methylation B. DNA methylation and tau hyperphosphorylation C. DNA methylation and histone modification
I need help solving these. With or without mechanisms, does not matter. Just need help wit the answers! Quiz 0330 A D Brz, Febro © 2 70CH, Pelpe Panger Egn ICP 0330 +) SOCI 2) + 1) CHz Coel , Aldis 2) NH3, H+
Deamination of a cytosine base in DNA results in a uracil base, which is disallowed in DNA. To resolve this conflict, this DNA needs to be repaired. For this, the modified base is recognized and removed by a ______, resulting in an AP site, which is recognized and cleaved by an endonuclease for nick-translation. Select one: a. exonuclease b. Uracyl DNA-glycosylase c. HindIII restriction endonuclease d. Klenow fragment e. AP-site endonuclease
Can you please explain in detail DNA repair mechanisms from a biochemical point of view (direct reversal of damage- DNA methyltransferase, DNA photolyase, base excision repair- DNA glycosylase and nucleotide excision repair, as well as mismatch repair and SOS response and recombination repair) I really need your help. I will be forever grateful. And if I may ask you one thing if you copy from the internet please put the citations, or links. Thank you in advance!!!
Discuss the following statement: The DNA repair enzymes that correct damage introduced by deamination and depurination must preferentially recognize such defects on newly synthesized strands.
I need help with drawing all the mechanisms steps to get from the starting compound to the product in acid catalyzed hydration. H,SOM
Regarding the four bases in DNA, the double-stranded DNA molecule is held together by complementary bases. In the DNA molecule, guanine binds with ____________ and adenine binds with ____________ in DNA; in RNA, adenine binds with _____________ instead. Therefore, if the codon on the DNA strand is CAG, then the mRNA codon that will bind to it will be _______________.
a. What would be the produet oP spontanedus deamination of a hsine nould am b. If not corrected, what will be the effect on the DNA sequence in the bottom strand upon replication? hould Describe the steps of the repair process that would most likely correct the deamination described in 4a. 5. a. What would be the produet oP spontanedus deamination of a hsine nould am b. If not corrected, what will be the effect on the DNA sequence in...