What is a gomphosis? What is an annual plant of the family Asteraceae? What is thigmotropism? What is transdermal immunomodulation? What is the relatedness between brother and sister? What is diastema? What are SNPs in genealogy? What is acetylation?
Histone acetylation is the addition of an acetyl group, a three-carbon molecule, to a lysine "residue" at one end of a histone molecule. Lysine is an amino acid, and the 20 or so amino acids are the building blocks of proteins. This is catalyzed by the enzyme histone acetyltransferase (...
What is RNA and DNA (in biology)? What is an antisense strand in DNA replication? DNA which is loosely wrapped around protein is referred to as: a. RNA b. chromosome c. chromatid d. chromatin What is responsible for replacing RNA with DNA in DNA replication?
Histone Lys acetylation Covalent addition of an acetyl group to Lys residues of histones. Many Lys residues can be acetylated and, unlike methylation, acetylation changes the charge of the Lys. By masking the positive charge of Lys, acetylation reduces electrostatic interactions between DNA and histon...
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The mechanism of memory remains one of the great unsolved problems of biology. Grappling with the question more than a hundred years ago, the German zoologist Richard Semon formulated the concept of the engram, lasting connections in the brain that result from simultaneous “excitations”, whose pr...
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and fibroblast activation and proliferation during renal fibrosis are similar to those observed in tumor cells [36]. TGF-β1 downregulates acetyl-CoA biosynthesis by inhibiting the activity of the pyruvate dehydrogenase complex, resulting in a decrease in protein acetylation that induces the metabolic ...
Epigenetic modifications, such as acetylation and methylation, can change the interactions between the DNA and histones.Answer and Explanation: A CG or CpG island is a piece of DNA (~500-1500 base pairs long) in which at least 60% of the sequence consists of cytosine nuc...
What is the connection between RNA and telomeres? What is genetic structure? Explain. What causes DNA methylation and histone acetylation? What is the oldest DNA of any kind ever found? What is the process of DNA replication? Explain the mechanism by which DNA is replicated. ...