See also: 5, , and 5.



5 (uncountable)

  1. That end of any DNA strand that has a terminal phosphate group.



5 (comparative more 5′, superlative most 5′)

  1. (informal) Relatively close to the 5′ end of a strand of DNA.
    • 1992, James D. Watson et al., Recombinant DNA, second edition, Scientific American Books, →ISBN, page 147:
      A CG pair is often designated CpG to signify that the two nucleotides are contiguous in DNA and that the C is 5′ to the G.