Explain mismatch and recombinant repair mechanism for DNA repair.
Mismatch repair and recombinant repair are critical mechanisms for maintaining DNA integrity, each addressing different types of errors and damage.
Mismatch Repair (MMR):
Mismatch repair corrects errors that occur during DNA replication, such as base-base mismatches and insertion-deletion loops. These errors typically arise when the DNA polymerase incorporates an incorrect nucleotide or fails to properly align DNA strands. The MMR process involves several steps:
1. Recognition: Proteins detect the mismatch and mark the newly synthesized strand. In eukaryotes, this is done by the MutS ____ __________ ____ _________ ____ _______ _______ _________ ________ _____ ____ ___.
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