What are the consequences of having pyrimidine dimers in DNA? 1. They form an extra phosphodiester bond between them. 2. They create an apyrimidinic site. 3. These dimers distort the DNA structure and Suppose that a deamination of a pyrimidine that iscomplementary ...
To produce the pyrophosphate molecule necessary for phosphorous spin entanglement, two phosphate groups should be detached during ATP hydrolysis instead of a single one in the usual ATP-ADP cycle. This double phosphate group detachment occurs in the synthesis of cAMP (cyclic AMP) from ATP by ...
Histone acetylation occurs by the enzymatic addition of an acetyl group (COCH3) from acetyl coenzyme A. The process of histone acetylation is tightly involved in the regulation of many cellular processes includingchromatindynamics and transcription, gene silencing, cell cycle progression, apoptosis, diff...
In which way is the organization of DNA in prokaryotes and eukaryotes similar? a. The origin of replication in prokaryotes occurs as frequently as in eukaryotes. b. They use the same enzymes in DNA replication. c. Their DNA is arranged in a single helix a ...
If mutation occurs causing transcription of a gene to occur on both strands of the DNA in the same cell, what affect would you expect that to have on the production of protein for the gene? DNA methylation at CpG dinucleotides is a mechanism of epigenetic regulation of gene expression and ...
It has been shown that the same effect occurs in the visual system [27]. Mice were monocularly deprived for a couple of days early in life so that the visual system adapted to this change of the visual environment. Subsequently, animals were subjected to normal vision again so that their ...
Glycosylation is the process of attaching sugars to α-PROTEIN or lipids under the control of enzymes. It occurs in the endoplasmic reticulum and Golgi apparatus. The sugar is transferred to α-PROTEIN under the action of glycosyltransferase, and is covalently bound to the amino acid residues on...
Transcription factor binding in human cells occurs in dense clusters formed around cohesin anchor sites. Cell 154, 801–813 (2013). Defines a potential role for cohesin in marking sites of transcription factor binding for reassociation after replication and mitosis. CAS PubMed Google Scholar Strub...
This occurs after the implantation of the embryo and will determine the gene expression for each cell [48,56]. These new epigenetic markers are important in determining the fate of specialized cells, such as differentiating into an epithelial versus muscle cell. This type of stable epigenetic ...
9 RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook Medical Wikipedia AcronymDefinition PCAFP300/CBP-Associated Factor PCAFp300/CREB (cAMP-Response Element Binding)-Binding Protein-Associated Factor PCAFPierce County AIDS Foundation(est. 1987; Washington) ...