When the complementary strand is read backwards, the sequence is 5’-GGATCC-3’ which is identical to the first one, making it a palindromic sequence. This is the sequence where the restriction endonuclease, BamHI, binds to and cleaves at a specific cleavage site. An example of a palindromic sequence is 5’-GGATCC-3’, which has a complementary strand, 3’-CCTAGG-5’. So if a sequence is palindromic, the nucleotide sequence of one strand would be the same as its reverse complementary strand. The sum of the reciprocals of the palindromic numbers converges to a constant (OEIS A118031 Rivera), where the value has been computed using all palindromic numbers is 3.370001832. The pairing of nucleotides within the DNA double-helix is complementary which consist of Adenine (A) pairing with either Thymine (T) in DNA or Uracil (U) in RNA, while Cytosine (C) pairs with Guanine (G). where is the number of palindromic primes and is the number of palindromic numbers. Recognition sites of many restriction enzymes are palindromic. The sequence is the same when one strand is read left to right and the other strand is read right to left. In molecular biology, palindromic sequences are referred to as the sequence of nucleotides in the DNA duplex or RNA, where the sequence in one strand is the same as the complementary sequence of the other strand when read from the same direction on both the strands, either 5’ to 3’ or 3’ to 5’. A DNA fragment resulting from the cutting of a DNA strand by a restriction enzyme v t e A restriction enzyme, restriction endonuclease, REase, ENase or restrictase is an enzyme that cleaves DNA into fragments at or near specific recognition sites within molecules known as restriction sites. A DNA sequence whose 5'-to-3' sequence is identical on each DNA strand.
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