What are the activities and applications of Exonuclease III, Mung Bean Nuclease, and S1 Nuclease?
Exonuclease III catalyzes the removal of mononucleotides from a 3'-OH terminus of duplexed DNA. It requires a substrate of double-stranded DNA containing a blunt end or a 3' recessed end. Exonuclease III also works at nicks to generate gaps.
S1 nuclease is an endonuclease specific for single-stranded DNA or RNA and can be used to study nucleic acid hybridization, mapping RNA start sites and RNA splice sites. This enzyme is five times more active on DNA than RNA, and it will digest all nucleic acids if the enzyme is added to the reaction in excess.
Mung bean nuclease is an endonuclease similar in action to S1 nuclease. Unlike S1 nuclease, it is used to generate blunt ended DNA from ss overhangs.
引用和文献 (6)
引用和文献
Abstract
Isolation and characterization of the human cytochrome P450 CYP1B1 gene.
Authors: Tang Y M; Wo Y Y; Stewart J; Hawkins A L; Griffin C A; Sutter T R; Greenlee W F;
Journal:J Biol Chem
PubMed ID:8910454
'Previously, we identified a novel human cytochrome P450 cDNA that is inducible by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and represents the first member of a new subfamily designated cytochrome P4501B1 (CYP1B1; Sutter, T. R., Tang, Y. M., Hayes, C. L., Wo, Y. P., Jabs, E. W., Li, X., Yin, H., Cody, C. W., ... More
Characterization of the 5' flanking region of the human D1A dopamine receptor gene [published erratum appears in Proc Natl Acad Sci U S A 1992 May 1;89(9):4220]
'To study how the expression of the D1A dopamine receptor gene is regulated, a human genomic clone was isolated by using a rat cDNA as probe. A 2.3-kilobase genomic fragment spanning -2571 through -236 relative to the adenosine of the first methionine codon was sequenced. The gene has an intron ... More
An altered DNA conformation detected by S1 nuclease occurs at specific regions in active chick globin chromatin.
Authors: Larsen A; Weintraub H;
Journal:Cell
PubMed ID:6288265
The single-stranded activity of S1-nuclease cleaves globin chromatin in red cell nuclei in specific regions. The cleavages are observed only in tissues in which the globin genes are active, and they ... More
Heteroduplex cleavage analysis using S1 nuclease.
Authors: Howard J T; Ward J; Watson J N; Roux K H;
Journal:Biotechniques
PubMed ID:10407654
Authors describe a version of heteroduplex cleavage analysis of PCR products based on the ability of S1 nuclease to cleave base pair mismatches in DNA/DNA heteroduplexes. The procedure requires very little sample, no purification, a short 30 minute incubation and can be visualized by agarose gel in less than ... More
High-density fiber-optic genosensor microsphere array capable of zeptomole detection limits.
Authors: Epstein Jason R; Lee Myoyong; Walt David R;
Journal:Anal Chem
PubMed ID:11985315
The detection limit of a fiber-optic microsensor array was investigated for simultaneous detection of multiple DNA sequences. A random array composed of oligonucleotide-functionalized 3.1-microm-diameter microspheres on the distal face of a 500-microm etched imaging fiber was monitored for binding to fluorescently labeled complementary DNA sequences. Inherent sensor redundancy in the ... More