DNA, C-Form - ț̢
An isoform of DNA that occurs under experimental conditions. It is a right-handed helix that is less compact than the B-form of DNA.
Synonyms : C-Form DNA, DNA, C Form
DNA, Catalytic - ț̢
Molecules of DNA that possess enzymatic activity.
Synonyms : DNAzyme, DNAzymes, Deoxyribozyme
DNA, Catenated - ț̢
CIRCULAR DNA that is interlaced together as links in a chain. It is used as an assay for the activity of DNA TOPOISOMERASES. Catenated DNA is attached loop to loop in contrast to CONCATENATED DNA which is attached end to end.
Synonyms : DNA, Catanates, DNA Catenanes
DNA, Chloroplast - ț̢
Deoxyribonucleic acid that makes up the genetic material of CHLOROPLASTS.
Synonyms :
DNA, Circular - ț̢
Any of the covalently closed DNA molecules found in bacteria, many viruses, mitochondria, plastids, and plasmids. Small, polydisperse circular DNA's have also been observed in a number of eukaryotic organisms and are suggested to have homology with chromosomal DNA and the capacity to be inserted into, and excised from, chromosomal DNA. It is a fragment of DNA formed by a process of looping out and deletion, containing a constant region of the mu heavy chain and the 3'-part of the mu switch region. Circular DNA is a normal product of rearrangement among gene segments encoding the variable regions of immunoglobulin light and heavy chains, as well as the T-cell receptor. (Riger et al., Glossary of Genetics, 5th ed & Segen, Dictionary of Modern Medicine, 1992)