Cre Loxp
Mostrando 1-12 de 113 artigos, teses e dissertações.
-
1. Restoring pollen fertility in transgenic male-sterile eggplant by Cre/loxp-mediated site-specific recombination system
This study was designed to control plant fertility by cell lethal gene Barnase expressing at specific developmental stage and in specific tissue of male organ under the control of Cre/loxP system, for heterosis breeding, producing hybrid seed of eggplant. The Barnase-coding region was flanked by loxP recognition sites for Cre-recombinase. The eggplant inbred
Genetics and Molecular Biology. Publicado em: 21/05/2010
-
2. Avaliação neuroquímica do sistema colinérgico de camundongos com o gene do transportador vesicular de acetilcolina (VAChT) modificado geneticamente
The vesicular acetylcholine transporter (VACht) is responsible for acetylcholine (Ach) storage in synaptic vesicles, an important step for cholinergic transmission. Our goal was to study the role of VAChT in cholinergic tonus maintenance through the generation of mice presenting alterations in VAChT gene by homologous recombination.. One of used strategies w
Publicado em: 2008
-
3. Principles of Site-Specific Recombinase (SSR) Technology
Site-specific recombinase (SSR) technology allows the manipulation of gene structure to explore gene function and has become an integral tool of molecular biology. Site-specific recombinases are proteins that bind to distinct DNA target sequences. The Cre/lox system was first described in bacteriophages during the 1980's. Cre recombinase is a Type I topoisom
MyJove Corporation.
-
4. Interaction of the bacteriophage P1 recombinase Cre with the recombining site loxP.
The interaction between the P1 recombinase protein Cre and the DNA site at which it acts, loxP, has been studied by using nuclease protection techniques. The region of DNA protected by Cre against nuclease attack by DNase I or neocarzinostatin is a 34-base-pair (bp) region containing two 13-bp inverted repeats separated by an 8-bp spacer region. These protec
-
5. Cre-stimulated recombination at loxP-containing DNA sequences placed into the mammalian genome.
The cre gene of coliphage P1 encodes a 38 kDa protein which efficiently promotes both intra- and intermolecular recombination at specific 34 bp sites called loxP. To demonstrate that the Cre protein can promote DNA recombination at loxP sites resident on a mammalian chromosome, a mouse cell line was constructed containing two directly repeated loxP sites fla
-
6. Transvection effects involving DNA methylation during meiosis in the mouse
High efficiencies of recombination between LoxP elements were initially recorded when the Cre recombinase was expressed in meiotic spermatocytes. However, it was unexpectedly found that LoxP recombination fell to very low values at the second generation of mice expressing Cre during meiosis. The inability of the LoxP elements to serve as recombination substr
Oxford University Press.
-
7. Simultaneous on/off regulation of transgenes located on a mammalian chromosome with Cre-expressing adenovirus and a mutant loxP
The site-specific recombinase Cre has often been used for on/off regulation of expression of transgenes introduced into the mammalian chromosome. However, this method is only applicable to the regulation of a single gene and cannot be used to simultaneously regulate two genes, because site-specific recombination occurs from the target loxP sequence of one re
Oxford University Press.
-
8. The role of the loxP spacer region in P1 site-specific recombination.
The lox-Cre site-specific recombination system of bacteriophage P1 is comprised of a site on the DNA where recombination occurs called loxP, and a protein, Cre, which mediates the reaction. The loxP site is 34 base pairs (bp) in length and consists of two 13 bp inverted repeats separated by an 8 bp spacer region. Previously it has been shown that the cleavag
-
9. Cre recombinase-mediated inversion using lox66 and lox71: method to introduce conditional point mutations into the CREB-binding protein
CREB-binding protein (CBP) is a multifunctional cofactor implicated in many intracellular signal transduction pathways. We aimed to investigate the involvement of CBP in the cAMP response element-binding protein (CREB)-mediated pathway. The point mutation Tyr658Ala in the CREB-binding domain (CBD) was shown to abolish the binding activity of CBP to phospho-C
Oxford University Press.
-
10. Asymmetric DNA bending in the Cre-loxP site-specific recombination synapse
Cre recombinase catalyzes site-specific recombination between two 34-bp loxP sites in a variety of DNA substrates. At the start of the recombination pathway, the loxP sites are each bound by two recombinase molecules, and synapsis of the sites is mediated by Cre–Cre interactions. We describe the structures of synaptic complexes formed between a symmetrized
The National Academy of Sciences.
-
11. Cre-mediated germline mosaicism: a new transgenic mouse for the selective removal of residual markers from tri-lox conditional alleles
The binary Cre-lox conditional knockout system requires an essential part of the target gene to be flanked by loxP sites, enabling excision in vivo upon Cre expression. LoxP sites are introduced by homologous recombination, together with a selectable marker. However, this marker can disturb gene expression and should be removed. The marker is therefore often
Oxford University Press.
-
12. Unidirectional Cre-mediated genetic inversion in mice using the mutant loxP pair lox66/lox71
The Cre/loxP recombination system is a commonly used tool to alter the mouse genome in a conditional manner by deletion or inversion of loxP-flanked DNA segments. While Cre-mediated deletion is essentially unidirectional, inversion is reversible and therefore does not allow the stable alteration of gene function in cells that constitutively express Cre. Site
Oxford University Press.