DNA, Superhelical

Circular duplex DNA isolated from viruses, bacteria and mitochondria in supercoiled or supertwisted form. This superhelical DNA is endowed with free energy. During transcription, the magnitude of RNA initiation is proportional to the DNA superhelicity.

Year introduced: 1978

PubMed search builder options

Subheadings:

Restrict to MeSH Major Topic.

Do not include MeSH terms found below this term in the MeSH hierarchy.

Tree Number(s): D13.444.308.283.250, G02.111.570.820.486.212.250, G05.360.580.156.250

MeSH Unique ID: D004278

Entry Terms:

• Superhelical DNA
• DNA, Supercoiled
• Supercoiled DNA
• DNA, Supertwisted
• Supertwisted DNA

Previous Indexing:

• DNA (1966-1977)
• DNA, Circular (1973-1977)

All MeSH Categories
Chemicals and Drugs Category
Nucleic Acids, Nucleotides, and Nucleosides
Nucleic Acids
DNA
DNA, Circular
DNA, Superhelical

All MeSH Categories
Phenomena and Processes Category
Chemical Phenomena
Biochemical Phenomena
Molecular Structure
Molecular Conformation
Nucleic Acid Conformation
DNA, Circular
DNA, Superhelical

All MeSH Categories
Phenomena and Processes Category
Genetic Phenomena
Genetic Structures
Nucleic Acid Conformation
DNA, Circular
DNA, Superhelical