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Gene Expression
Gene Expression

... Gene Expression Cells use information in genes to build hundreds of different proteins, each with a specific function. But, not all proteins are required by the cell at any one time. By regulating gene expression, cells are able to control which proteins are made. ...
Sex & Death: Introduction to the Philosophy of Biology
Sex & Death: Introduction to the Philosophy of Biology

... 4.1 What is a gene? “Evolutionary Gene” fails Invisibility Argument 4.2 Genes are active germ line replicators First attempt to redefine “gene” 4.3 Genes are difference makers Second attempt to redefine “gene” ...
Creating Transgenic Mice
Creating Transgenic Mice

... mouse will be born with the gene defect or altered gene. B. Embryonic stem cells are isolated from a trophoblast after which a plasmid containing the gene of interest is transfected into the stem cells (i.e., isolated cells from the inner cell mass) by various methods (e.g., electroporation). The tr ...
Translational Control
Translational Control

... is called a “missense mutation” bc the protein may still work, but not as before. If the change results in multiple amino acid changes or a stop codon in the middle, this is called a “nonsense mutation”. Typically these proteins do not function at all. Note: if a mutation can make a protein WORSE, i ...
Problem Set 4B
Problem Set 4B

... A. Nonsense mutation in the lacY gene. Nonfunctional permease. A stop codon is introduced in the protein coding sequence. Lactose is no longer transported into the cell. B. Neutral mutation in the DNA Glycosylase gene. The amino acid sequence of the enzyme is changed, but there is no effect on the ...
PLUS... - Oxford Biodynamics
PLUS... - Oxford Biodynamics

... The unintended action is that, in the presence of nutrients, the programme continues to drive cell proliferation despite the fact that mother cells are accumulating damaged DNA, proteins and organelles (Figure 4B). Thus, continued proliferation occurs at the expense of longevity of the mother cells, ...
Practise Final exam
Practise Final exam

... Unaffected individuals have the DNA sequence GAGGAG, a BseRI restriction enzyme site, in their gene generating two DNA fragments of 2 and 4 kb. The A to T substitution occurs within the BseR1 site thus inactivating the site (GTGGAG). Draw the RFLP gel including results for a carrier, as well as homo ...
5. Differential Gene Expression
5. Differential Gene Expression

... 3. There can be multiple signals (e.g. multiple enhancer sites) for a  given gene, and each enhancer can be bound by more than one  transcription factor (though, not at the same time).  4. Transcription is regulated by the interaction of transcription factors  bound to enhancers and the transcriptio ...
EXPLORE THE ISSUE BEING INVESTIGATED
EXPLORE THE ISSUE BEING INVESTIGATED

... transcription factor to bind to the appropriate gene locations governing determination and differentiation of the five cell types. 2. Regulating the target gene. Two of LHX3’s domains mediate protein-protein interactions once the transcription factor has attached to the DNA. By having particular sha ...
Genetics Journal Club - Perelman School of Medicine at the
Genetics Journal Club - Perelman School of Medicine at the

... showing increased or decreased interaction frequency listed. Domains that do not show a concerted change are shown in grey. ...
Biology 105: Introduction to Genetics
Biology 105: Introduction to Genetics

... A molecular marker probe was used to study RFLPs. DNA was digested to completion with HinDIII and analyzed by a Southern blot using the probe. The restriction map is shown along with the position of the GGG probe. (More than one HindIII site can/might be polymorphic in any one individual). Below the ...
chapter10_all
chapter10_all

... unless bound to certain proteins. Transport protein binding affects where the transcript will be delivered in the cell. Cytoplasm mRNA ...
Eukaryotic gene expression
Eukaryotic gene expression

... • Promoters include, for example, TATAA boxes, GC boxes and CAAT boxes that are responsible for positioning RNA polymerase II at the beginning of a gene – Polymerase II has no affinity for the TATAA box on its own. – Assembly of a transcriptional complex depends on the sequence around the 5’ end of ...
Chapter 5C
Chapter 5C

... fused to 20-nt sequences that flank the targeted gene is made by PCR and transformed into diploid yeast. Recombinants in which the disruption construct has replaced one wild type allele are selected by plating cells on G-418. On sporulation, half of the haploid spores receive the disrupted gene. If ...
Eukaryotic Gene Control
Eukaryotic Gene Control

... Essential knowledge 3.B.1: Gene regulation results in differential gene expression, leading to cell specialization. c. In eukaryotes, gene expression is complex and control involves regulatory genes, regulatory elements and transcription factors that act in concert. 1. Transcription factors bind to ...
Chapter 18: Regulation of Gene Expression - Biology E
Chapter 18: Regulation of Gene Expression - Biology E

... Almost all the cells in an organism contain an identical genome. (Cells of the immune system are one exception.) However, the subset of genes expressed in the cells of each type is unique, allowing these cells to carry out their specific function. The difference between cell types are due to differ ...
Norwich_Bielski_Hulsebris_Smith_Latshaw
Norwich_Bielski_Hulsebris_Smith_Latshaw

... The gene ICL1 I anticipated to be upregulated with the treatment of DMSO were confirmed by the data analysis and reinforced by additional data in the public realm leading me to conclude that ICL1 was significantly upregulated in DMSO yeast when compared to control. The gene FLR1 was anticipated to b ...
Chapter 18
Chapter 18

... chromatin influence both chromatin structure and gene expression ...
HOX genes (1)
HOX genes (1)

... The Homeodomain • The homeotic genes encode transcription factors of a class called homeodomain proteins. The homeodomain is a 60aa protein domain, which binds DNA. Hox genes bind DNA regulatory elements of their target genes in a specific combination so that the expression pattern in each of the d ...
side2
side2

... FIS-like ...
Gene Section PLAGL2 (pleomorphic adenoma gene-like 2) Atlas of Genetics and Cytogenetics
Gene Section PLAGL2 (pleomorphic adenoma gene-like 2) Atlas of Genetics and Cytogenetics

... expression occurs principally in type II pneumocytes located in the distal lung alveolae. Additional data suggest that repression of the transactivating capacity of PLAGL2 may be directly related to sumoylation. Also, PLAGL2 protein is acetylated and activated by p300 and deacetylated and repressed ...
Biol518Lec2final-2 - Cal State LA
Biol518Lec2final-2 - Cal State LA

... Using purified proteins (enzymes), we can search for compounds inhibiting enzyme activity Test compounds on cells to see if cell growth is inhibited ...
Nobel laureate Gerald M Edelman
Nobel laureate Gerald M Edelman

... cortisol (and other neurotransmitters) determine the functional status of hippocampal-neocortical circuits, thereby influencing the memory consolidation processes that transpire during sleep. Depression and Schizophrenia both of which result in raised CORTISOL disrupts normal hippcampal-neocortical ...
Pierce chapter 10
Pierce chapter 10

... – Base composition of DNA among different species had great variety, but consistent within a single species – Adenine amount roughly equals thymine amount; guanine amount roughly equals cytosine amount ...
Studying Neuronal Function using the Flies and Mice
Studying Neuronal Function using the Flies and Mice

... • Entire protocol books have been published on just this organism for culturing, e.g., Drosophila Protocols (Sullivan et al., 2000) or Fly Pushing (Greenspan, 2000). ...
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Epigenetics in learning and memory

While the cellular and molecular mechanisms of learning and memory have long been a central focus of neuroscience, it is only in recent years that attention has turned to the epigenetic mechanisms behind the dynamic changes in gene transcription responsible for memory formation and maintenance. Epigenetic gene regulation often involves the physical marking (chemical modification) of DNA or associated proteins to cause or allow long-lasting changes in gene activity. Epigenetic mechanisms such as DNA methylation and histone modifications (methylation, acetylation, and deacetylation) have been shown to play an important role in learning and memory.
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