| DNA N-glycosidase | <enzyme> Excises 3-methyladenine from alkylated DNA leaving an apurinic site with both 3' and 5' phosphodiester bonds intact, a preparatory step for nucleotide excision repair; excises hypoxanthine from deaminated DNA and polydeoxyribonucleotides; prefer EC 3.2.2.20 or EC 3.2.2.21 Registry number: EC 3.2.2.- Synonym: DNA glycosylase, methylpurine DNA glycosylase (26 Jun 1999) |
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| DNA nucleotidylexotransferase | <enzyme> A non-template-directed DNA polymerase normally found in vertebrate thymus and bone marrow. It catalyses the elongation of oligo- or polydeoxynucleotide chains and is widely used as a tool in the differential diagnosis of acute leukaemias in man. Chemical name: Nucleoside-triphosphate:DNA deoxynucleotidylexotransferase Registry number: EC 2.7.7.31 (12 Dec 1998) |
| DNA nucleotidyltransferases | <enzyme> A general term denoting enzymes that catalyze the template-directed incorporation of deoxyribonucleotides into a DNA chain. Registry number: EC 2.7.7.- (12 Dec 1998) |
| DNA photolyase | <enzyme, molecular biology> A DNA repair enzyme which recognises and removes dimers that have formed between pyrimidine nitrogenous bases on the same strand as each other, as a result of too much ultraviolet radiation. The enzyme can only do this if visible light is present. (09 Oct 1997) |
| DNA polymerase | <enzyme, molecular biology> Enzymes involved in template directed synthesis of DNA from deoxyribonucleotide triphosphates. I, II and III are known in E. Coli, III appears to be most important in genome replication and I is important for its ability to edit out unpaired bases at the end of growing strands. Animal cells have and polymerases, with apparently responsible for replication of nuclear DNA and for replication of mitochondrial. All these function with a DNA strand as template. Retroviruses possess a unique DNA polymerase (reverse transcriptase) that uses an RNA template. (18 Nov 1997) |
| DNA polymerase beta | <enzyme> A DNA repair enzyme that catalyses DNA synthesis during base excision DNA repair. Registry number: EC 2.7.7.- (12 Dec 1998) |
| DNA polymerase i | DNA Polymerase I is an enzyme that aids in DNA replication. It has the following 3 functions: 1. Polymerizes in the 5(r) to 3(r) direction on single-stranded template. 2. Degrades single or double-stranded DNA from a free 3(r)-OH end, and 3. Degrades double-stranded DNA from a free 5(r) end. (09 Oct 1997) |
| DNA polymerase II | <enzyme> An enzyme that aids in DNA replication. It has a number of different functions, including the repair of ultraviolet radiation damaged DNA. (09 Oct 1997) |
| DNA polymerase III | <enzyme> An enzyme that aids in DNA replication. It has a number of different functions, such as: proofreading newly replicated DNA, removing nucleotides from the 3' end of the strand one by one, and binding nucleotides from the 5' end of the strand. (09 Oct 1997) |
| DNA polymerisation | <molecular biology> The making of a DNA molecule from nucleotide monomers by linking them together in a long chain (a polymer). (09 Oct 1997) |
| DNA polymorphism | A condition in which one of two different but normal nucleotide sequences can exist at a particular site in DNA. (05 Mar 2000) |
| DNA primase | <enzyme> A single-stranded DNA-dependent RNA polymerase that functions to initiate, or prime, DNA synthesis by synthesizing a nucleotide RNA polymer. Registry number: EC 2.7.7.- (12 Dec 1998) |
| DNA primers | Short sequences (generally about 10 base pairs) of DNA that are complementary to sequences of messenger RNA and allow reverse transcriptases to start copying the adjacent sequences of mRNA. Primers are used extensively in genetic and molecular biology techniques. (12 Dec 1998) |
| DNA probe | <molecular biology> A small piece of nucleic acid that has been labelled with a radioactive isotope, dye, or enzyme and is used to locate a complementary nucleotide sequence or gene on a DNA molecule. (14 Nov 1997) |
| DNA probes | Species- or subspecies-specific DNA (including complementary DNA (DNA, complementary), conserved genes, whole chromosomes, or whole genomes) used in hybridization studies in order to identify microorganisms, to measure DNA-DNA homologies, to group subspecies, etc. The DNA probe hybridises with a specific mRNA, if present. Conventional techniques used for testing for the hybridization product include dot blot assays, southern blot assays, and DNA:RNA hybrid-specific antibody tests. Conventional labels for the DNA probe include the radioisotope labels 32p and 125i and the chemical label biotin. The use of DNA probes provides a specific, sensitive, rapid, and inexpensive replacement for cell culture techniques for diagnosing infections. (12 Dec 1998) |
| highly repetitive DNA | <molecular biology> The fraction of the eukaryotic genome which consists of a short sequence of nucleotides that is repeated thousands of times all over the genome. Highly repetitive DNA is very similar to satellite DNA. (09 Oct 1997) |
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| PspPI DNA methyltransferase | <enzyme> Methylates first cytosine in ggncc Registry number: EC 2.1.1.- Synonym: psppi methyltransferase, mtase (psppi), psppim gene product (26 Jun 1999) |
| selfish DNA | <molecular biology> DNA that seemingly exists only for the sake of existing and is never expressed in the phenotype. (09 Oct 1997) |
| sequence analysis, DNA | A multistage process that includes DNA cloning, physical mapping, subcloning, sequencing, and information analysis. New technological advances have led to the automation of certain steps in this process and contribute to the potential for large-scale DNA sequencing efforts. (12 Dec 1998) |
| Pyrococcus sp GB-D DNA polymerase | <enzyme> Thermophilic enzyme from the archaeon pyrococcus; used in pcr site-directed mutagenesis Registry number: EC 2.7.7.- Synonym: gb-d polymerase (26 Jun 1999) |
| hybrid DNA | <molecular biology> A double-stranded DNA molecule which was made by hybridising two single-stranded DNA molecules from two different sources. If the two single-stranded DNA molecules have enough nucleotide sequences in common, they are able to form hydrogen bonds to each other's common sequences. (09 Oct 1997) |
| hydroxymethyluracil DNA glycosylase | <enzyme> Functions to eliminate hydroxymethyluracil from oxidatively damaged DNA Registry number: EC 3.2.2.- Synonym: hmu DNA glycosylase (26 Jun 1999) |
| single stranded DNA | <molecular biology> DNA that consists of only one chain of nucleotides rather than the two base pairing strands found in DNA in the double helix form. Parvoviridae have a single stranded DNA genome. Single stranded DNA can be produced experimentally by rapidly cooling heat denatured DNA. Heating causes the strands to separate and rapid cooling prevents renaturation. (18 Nov 1997) |
| single stranded DNA dependent ATPase | <enzyme> Probably involved in DNA replication Registry number: EC 3.6.1.- Synonym: ssdna-dependent atpase (26 Jun 1999) |
| site-specific DNA-methyltransferase (adenine-specific) | <enzyme> An enzyme responsible for producing a species-characteristic methylation pattern on adenine residues in a specific short base sequence in the host cell DNA. The enzyme catalyses the methylation of DNA adenine in the presence of s-adenosyl-l-methionine to form DNA containing 6-methylaminopurine and s-adenosyl-l-homocysteine. Registry number: EC 2.1.1.72 (12 Dec 1998) |
| site-specific DNA methyltransferase (cytosine-specific) | <enzyme> An enzyme responsible for producing a species-characteristic methylation pattern on cytosine residues in a specific short base sequence in the host cell's DNA. The enzyme catalyses the methylation of DNA cytosine in the presence of s-adenosyl-l-methionine to form s-adenosyl-l-homocysteine and DNA containing 5-methylcytosine. Registry number: EC 2.1.1.73 (12 Dec 1998) |
| spacer DNA | <molecular biology> The DNA sequence between genes. In bacteria, only a few nucleotides long. In eukaryotes, can be extensive and include repetitive DNA, comprising the majority of the DNA of the genome. The term is used particularly for the spacer DNA between the many tandemly repeated copies of the ribosomal RNA genes. (18 Nov 1997) |
| sticky-ended DNA | Double-stranded DNA in which one of the strands protrudes from the other strand (i.e., has a number of unpaired bases) at one end or more. (05 Mar 2000) |
| noncoding DNA | <molecular biology> DNA that does not code for part of a polypeptide chain or RNA.This includes introns and pseudo genes. In eukaryotes the majority of the DNA is noncoding. Noncoding strand refers to the so called nonsense strand, as opposed to the sense strand which is actually translated into mRNA. (18 Nov 1997) |
| nucleoskeletal DNA | <molecular biology> DNA that is proposed to exist mostly to maintain nuclear volume and not for coding protein. (18 Nov 1997) |
Synonyms : DNA Methylations, Methylation, DNA, Methylations, DNA
Synonyms : Mismatch Repair, DNA, Repair, DNA Mismatch, Repair, Mismatch
Synonyms : Methylases, DNA Modification, Methylases, Modification, Methyltransferases, DNA Modification, Modification Methylases, DNA, Modification Methyltransferases, DNA
Synonyms : Analysis, DNA Mutational, Analyses, DNA Mutational, DNA Mutational Analyses, Mutational Analyses, DNA
Synonyms : Deoxynucleotidyl Transferase, Deoxynucleotidyltransferase, Desoxynucleotidyl Transferase, Desoxynucleotidyltransferase, Tdt Antigen, Terminal Deoxynucleotidyl Transferase, Terminal Deoxyribonucleotidyl Transferase, Addition Enzyme, Terminal, Antigen, Tdt
| DNA replication |
Process by which the DNA double helix unwinds and makes a copy of itself.
Ãâó: science.education.nih.gov/supplements/nih1/genetic...
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| DNA probe |
Any biochemical used to identify or isolate a gene, a gene product, or a protein.
Ãâó: www.cdc.gov/genomics/gtesting/ACCE/FBR/CF/CFGlossa...
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| DNA |
A molecule that carries genetic information.
Ãâó: nydailynews.healthology.com/nydailynews/15836.htm
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| DNA cloning |
Amplification of specific sequences of DNA utilizing biological vectors.
Ãâó: www.knowledgebank.irri.org/glossary/Glossary/D.htm
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| DNA polymorphism |
Difference in DNA sequence among individuals or lines that permits genetic linkage analysis or DNA marker-aided selection.
Ãâó: www.knowledgebank.irri.org/glossary/Glossary/D.htm
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