| dyad symmetry of DNA | <molecular biology> Two areas of a DNA molecule whose base pair sequences are repeats of each other, inverted relative to each other, or are palindromes. (09 Oct 1997) |
|---|---|
| O(2)-methylthymine-DNA glycosidase | <enzyme> Repairs o(2)-methylthymidine residues in DNA Registry number: EC 3.2.2.- Synonym: mth-DNA glycosidase (26 Jun 1999) |
| O(4)-methylthymine-DNA methyltransferase | <enzyme> Repairs o(4)-methylthymidine residues in DNA Registry number: EC 2.1.1.- Synonym: mth-DNA methyltransferase (26 Jun 1999) |
| o(6)-methylguanine-DNA methyltransferase | <enzyme> An enzyme that transfers methyl groups from o(6)-methylguanine, and other methylated moities of DNA, to a cysteine residue in itself, thus repairing alkylated DNA in a single-step reaction. Chemical name: DNA-6-O-methylguanine:protein-L-cysteine S-methyltransferase Registry number: EC 2.1.1.63 (12 Dec 1998) |
| technology, recombinant DNA | A series of procedures used to join together (recombine) DNA segments. A recombinant DNA molecule is constructed (recombined) from segments from 2 or more different DNA molecules. Under certain conditions, a recombinant DNA molecule can enter a cell and replicate there, autonomously (on its own) or after it has become integrated into a chromosome. (12 Dec 1998) |
| Tet DNA polymerase | <enzyme> From thermus thermophilus; thermostable, used as a replacement for taq polymerase in DNA sequencing Registry number: EC 2.7.7.- Synonym: DNA polymerase tet (26 Jun 1999) |
| transfer DNA | <molecular biology> The transforming region of DNA in the Ti plasmid of agrobacterium tumefaciens. Acronym: t-DNA (04 Jul 1999) |
| triple DNA | <molecular biology> A variation of DNA, in which there is a third strand of nucleotides binding to the first two by specific base pairing. (14 Nov 1997) |
| exogenous DNA | <molecular biology> DNA originating outside an organism. (09 Oct 1997) |
| junk DNA | That portion of DNA which is not transcribed and expressed, comprising about 90% of the 3 billion base pairs of the human genome; its function is not known. (05 Mar 2000) |
| extrachromosomal DNA | DNA that occurs naturally outside of the nucleus (e.g., mitochondrial DNA). (05 Mar 2000) |
| UlTma DNA polymerase | <enzyme> A thermostable DNA polymerase with putative proofreading activity Registry number: EC 2.7.7.- (26 Jun 1999) |
| Z-DNA | <molecular biology> A form of DNA, or a region of DNA, in which the helix is flipped into a lefthanded helix, characterised by alternating purines and pyrimidines. This region is thought to be the target of a DNA-binding protein. (20 Jun 2000) |
| zero time-binding DNA | DNA that has become the duplex form at the start of a reassociation process. Acronym: DNA (05 Mar 2000) |
| unique DNA | <molecular biology> Any nucleotide sequence in DNA that is found only once in a given genome. (09 Oct 1997) |