3. To cause overexpression of the genes it controls, would MECP2 protein have to remove methyl groups, or stabilize them?
Answer
To cause overexpression of the genes it controls, MECP2 protein has to remove methyl group so that it can not bind with CpG iland as MECP2 is known as a transcriptional repressor. If there is less or no methylation of CpG iland of any target gene then MECP2 will not be able to find that region as a result oversexpression of gene will happens.
3. To cause overexpression of the genes it controls, would MECP2 protein have to remove methyl...
1. The virus repressor protein A) controls the prophage's lytic genes but not the incoming genomes of the same virus. B) does not control the prophage's lytic genes but does control the incoming genomes of the same virus. C) controls both the lytic genes on the prophage and prevents an incoming virus of the same type. D) has different actions in different situations. 2. The primer for retrovirus reverse transcription is a specific A) tRNA encoded by the cell. B)...
3. (2 points) In the nematode roundworm, Caenorhabditis elegans, the LIN-14 protein controls the timing of certain cell divisions during development. LIN-14 protein levels are normally high in early development but decrease in the later stages. In a lin-4 mutant, the level of LIN-14 protein stays high throughout development, changing the pattern of cell divisions in the animal and producing defects in the shape of the animal. The lin-4 gene encodes a microRNA that binds to a sequence in the...
1.Phase variation controls protein levels by a. altering the DNA sequence. b. changing the rate of mRNA translation. c. changing the rate of mRNA stability. d. changing the rate of protein stability 2.Chlamydomonas spp. can survive at freezing temperatures in their natural Antarctic environment. They have 39 different RNA helicase genes, and it has been hypothesized some of these are activated at freezing temperatures. What technique would be used to test this? a. ChIP-seq b. CRISR-Cas9 c. RT-PCR d. DNA...
3. Think about what G-proteins look like before they bind to a G-protein-coupled receptor. These G-proteins would have...circle your answer GTP attached to them OR GDP attached to them (a) Think about what G-proteins look like after they bind to a G-protein-coupled receptor. These G-proteins would have...circle your answer GTP attached to them OR GDP attached to them (b) A molecule of GTP contains how many phosphate groups? (c) Think about a G-protein that has a GTP attached to it....
A silent mutation would cause: O A change in the conformation of a protein The inhibition of transcription 0 The inhibition of translation No change in the amino acid sequence of a protein
Phosphatases are a family of enzymes that remove phosphate groups from specific proteins; these phosphate groups had been added to the proteins by protein kinases. Vanadate is an inhibitor of phosphatases in eukaryotic cells. What effect would vanadate have on the response of cells to signals received by receptor kinases? A) The signal would still bind the receptor, so there would be no effect. B) The response of the cell would last longer than it normally would. C) The response...
The series of molecules that are activated form a signalling
pathway (Figure 3). Central to the signaling pathway are molecules
known as kinases and phosphatases. Protein kinases are molecules
that catalyze the addition of phosphate groups to proteins there by
activating them. Primarily they add phosphate to either tyrosine
residues or serine and threonine residues in proteins. Phosphates
are molecules that remove a phosphate group from a protein there by
de-activating the protein and resulting in shutting down of the...
Two common oncogenes are: HER2, a specialized protein that controls cancer growth and spread. It is found in some cancer cells. For example, breast and ovarian cancer cells. The RAS family of genes, which makes proteins involved in cell communication pathways, cell growth, and death. True False Oncogenes are inherited unhealthy cells. True False When a tumor suppressor gene mutates, cells grow uncontrollably and may form a tumor. True False Oncology nurses have little need for genetic knowledge. True False
You are interested in studying the expression of Neurogenesis-2 (NG-2), a protein that may have a role in neurogenesis in the brain. You know that neurogenesis slows/stops as mice age, so you hypothesize that it will be highly expressed in young mice compared to old mice. (NG-2 is a fake protein used for this test question). Please note that you are being asked to analyze NG-2 at the PROTEIN level. Select appropriate techniques and technologies. (20 pts total). a) Describe...
Zebrafish (Danio rerio) have over 26,000 protein coding genes but their genome is roughly 1.7 billion base pairs (Gbp) - half the size of the human genome. The average human has 20,000 or fewer protein coding genes. Explain which components of the human genome lead to its larger size. Additionally, explain the mechanism that the component(s) use to expand or grow bigger in the human genome.