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C-DNA

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Not to be confused with complementary DNA, also known as cDNA.

C-DNA also known as C form DNA. It is one of the many possible double helical structures of DNA. This form of DNA can be observed at some conditions such as relatively low humidity and the presence of certain ions, such as Li+ or Mg2+.

Recent research suggests that both C-DNA and B-DNA consist of two distinct nucleotide conformations, B-I and B-II. The ratio of B-II conformation in C-DNA is more than 40%. However, the ratio of B-II conformation in B-DNA is only about 10%.It has 9.33 bp/turn. This form of dna is not very stable and not very common. It has right handed helice.

See also

References

  • L van Dam, M H Levitt (2000). "BII nucleotides in the B and C forms of natural-sequence polymeric DNA: A new model for the C form of DNA". J Mol Biol. 304 (4): 541–61. doi:10.1006/jmbi.2000.4194. PMID 11099379.
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