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DNA, A-Form MeSH Descriptor Data 2025


MeSH Heading
DNA, A-Form
Tree Number(s)
D13.444.308.130
G02.111.570.820.486.128
G05.360.580.114
Unique ID
D044704
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D044704
Scope Note
An isoform of DNA that occurs in an environment rich in SODIUM and POTASSIUM ions. It is a right-handed helix with 11 base pairs per turn, a pitch of 0.256 nm per base pair and a helical diameter of 2.3 nm.
Entry Term(s)
A-DNA
Previous Indexing
DNA (1985-2003)
See Also
DNA, C-Form
DNA, Z-Form
Nucleic Acid Conformation
Public MeSH Note
2004; see DNA 1986-2003
History Note
2004; use DNA 1986-2003
Date Established
2004/01/01
Date of Entry
2003/07/09
Revision Date
2015/06/22
DNA, A-Form Preferred
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