| DNA typing | <molecular biology> See restriction fragment length polymorphism. (18 Nov 1997) |
|---|---|
| DNA unwinding protein | <molecular biology> A protein that will attach to single-stranded DNA after it has been unwound for replication or recombination, and help it stay unwound. (09 Oct 1997) |
| DNA virus | <molecular biology, virology> A virus in which the nucleic acid is double or single stranded DNA (rather than RNA). Major groups of double stranded DNA viruses are papovaviruses, adenoviruses, herpes viruses, large bacteriophages and poxviruses: of single stranded, parvoviruses and coliphages _X174 and M13. (18 Nov 1997) |
| DNA viruses | Viruses whose nucleic acid is DNA. (12 Dec 1998) |
| DNA writhing | <molecular biology> Coiling of a double-stranded DNA molecule in such a way that it crosses its own (longitudinal) axis. (09 Oct 1997) |
| DNA, antisense | A DNA molecule which is complementary to the sense strand (that which functions as a template for the synthesis of mRNA) but is not involved in transcription. Both strands are involved in replication. (12 Dec 1998) |
| DNA, archaeal | Deoxyribonucleic acid that makes up the genetic material of archaea. (12 Dec 1998) |
| DNA, bacterial | Deoxyribonucleic acid that makes up the genetic material of bacteria. (12 Dec 1998) |
| DNA, chloroplast | Deoxyribonucleic acid that makes up the genetic material of chloroplasts. (12 Dec 1998) |
| DNA, circular | 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. (12 Dec 1998) |
| DNA, complementary | Single-stranded complementary DNA synthesised from an RNA template by the action of RNA-dependent DNA polymerase. Cdna (i.e., complementary DNA, not circular DNA, not c-DNA) is used in a variety of molecular cloning experiments as well as serving as a specific hybridization probe. (12 Dec 1998) |
| DNA, fungal | Deoxyribonucleic acid that makes up the genetic material of fungi. (12 Dec 1998) |
| DNA, helminth | Deoxyribonucleic acid that makes up the genetic material of helminths. (12 Dec 1998) |
| DNA, kinetoplast | Mitochondrial DNA of trypanosomes and related parasitic protozoa within the order kinetoplastida. Kinetoplast DNA is used as a DNA probe and consists of a complex network of numerous catenated rings of two classes; the first being a large number of small DNA duplex rings, called minicircles, approximately 2000 base pairs in length, and the second being several dozen much larger rings, called maxicircles, approximately 37 kb in length. (12 Dec 1998) |
| DNA, mitochondrial | Double-stranded DNA of mitochondria. In eukaryotes, the mitochondrial genome is circular and codes for ribosomal rnas, transfer rnas, and about 10 proteins. (12 Dec 1998) |