- (/diːˈɒksɪˌraɪboʊnjuːˌkliːɪk, -ˌkleɪ-/ ;
DNA) is a
polymer composed of two
polynucleotide chains that coil
around each
other to
form a
double helix. The
polymer carries...
-
of to the right, like the more
common B-
DNA form. Z-
DNA is
thought to be one
of three biologically active double-helical
structures along with A-
DNA and...
-
molecular biology,
DNA replication is the
biological process of producing two
identical replicas of DNA from one
original DNA molecule.
DNA replication occurs...
- role in
repairing single-strand
breaks in
duplex DNA in
living organisms, but some
forms (such as
DNA ligase IV) may
specifically repair double-strand...
- also triple-stranded
DNA forms and
quadruplex forms such as the G-quadruplex and the i-motif. Twin
helical strands form the
DNA backbone.
Another double...
- double-stranded
forms and in both
natural and
engineered forms. In
engineered forms, it
often is a copy (replicate)
of the
naturally occurring DNA from any particular...
-
crystallographer whose work was
central to the
understanding of the
molecular structures of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), viruses,...
-
Nucleic acid
structure refers to the
structure of nucleic acids such as
DNA and RNA.
Chemically speaking,
DNA and RNA are very similar.
Nucleic acid structure...
- helix-axis as in B-
DNA. It was
discovered by
Rosalind Franklin, who also
named the A and B
forms. She
showed that
DNA is
driven into the A
form when
under dehydrating...
-
covalent bond
forms between its
phosphate group and the
pentose sugar of the next nucleotide,
forming a sugar-phosphate backbone.
DNA is a complementary...
