• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Protein Synthesis
Protein Synthesis

... -about 45 different ones -carry amino acids to ribosome on board ...
No Slide Title
No Slide Title

... acid specified by it’s anticodon and transfers it to the ribisome where it meets up with mRNA to assemble a protein. ...
BIO 101: Transcription and Translation
BIO 101: Transcription and Translation

... been completely transcribed In eukaryotes, this is pre-mRNA and must be further processed ...
A Probabilistic Model to Integrate Microarray and ChIP Data
A Probabilistic Model to Integrate Microarray and ChIP Data

... bmt is the transcription factor activity (TFA) of TF m at time t, monotonically linked to protein concentrations (Liao et al, Boulesteix and Strimmer, Gao et al,...) ...
CS4030: Tutorial 1- Biological Issues (from Bioinformatics ch 1)
CS4030: Tutorial 1- Biological Issues (from Bioinformatics ch 1)

... (H) in DNA. Sketch the chemical structure of the deoxyribose sugar used by DNA in the ribose sugar used in RNA. 2. Diagram the ”Central Dogma” of molecular biology complete with labels that indicate the portions that correspond to transcription and translation and indicate what enzymes are responsib ...
Dr. Anton Meinhart Department of Biomolecular
Dr. Anton Meinhart Department of Biomolecular

... of mRNA 3’-end processing, since it recruits the entire machinery to the site of transcription by binding to the RNA Polymerase II and is thought to recognize signal sequences at the nascent RNA. We are currently studying the assembly pathway of CF IA and want to obtain structural information of thi ...
Genes and How they work!
Genes and How they work!

... • Most eukaryotes posses Introns, Prokaryotes mostly do not! • Eukaryote mRNA contain transcripts of one gene. Prokaryote mRNA transcripts of several genes. • mRNA of eukaryotes must exit nucleus before translation can take place ...
amino acids
amino acids

... 4 only ~1.5% of the human genome encodes proteins and ~80% is not related to genes or their regulation. ...
RNA polymerase I
RNA polymerase I

... The enzyme complex consists of 12 subunits (Rpb1 to 12) that are highly conserved among eukaryotes. Crystal structures have revealed that yeast RNA pol II has two distinct structures and can be dissociated into ...
Regulation of gene e
Regulation of gene e

... factors “base” rate of transcription distant control sequences on DNA binding of activator proteins “enhanced” rate (high level) of transcription ...
Photo Album
Photo Album

... current model of CREB-mediated transcription. Under basal conditions, unphosphorylated CREB is bound to the CRE element in the promoter of its target genes. Upon neural activity, CREB is phosphorylated at Ser-133 by various kinases within the KID domain. The KIX domain of CBP can then bind to CREB a ...
in the promoter?
in the promoter?

... The Growth-Hormone-Releasing-Hormone Receptor gene is on chromosome 7 (at location 7p14), as shown in the diagram. The investigators already found that there was a defect in the gene on one chromosome. In the protein made by that gene, there was a glutamic acid (negative charge) instead of lysine ( ...
10-Genes
10-Genes

... Gene Structure & Function ...
Introduction to Molecular Biology
Introduction to Molecular Biology

... Consist of thousands of DNA probes corresponding to different genes arranged as an array. Each probe (sometimes consisting of a short sequences of synthetic DNA) is complementary to a different mRNA (or cDNA) mRNA isolated from a tissue or cell type is converted to fluoroscently labeled mRNA or cDNA ...
doc NTC Mar 31
doc NTC Mar 31

...  So if lactose is not present in the culture medium then the Laci gene is transcribed and is able to bind into the laci repressor protein, which is able to bind to the operator which is a DNA sequence upstream of the promoter of the Lac Operon. Therefore the RNA polymerase has a physical block, so ...
Lecture, Gene Expression
Lecture, Gene Expression

... really). Once a new cell is made, it can begin to use the DNA to create phenotypes. We call this next part Gene Expression, or the production of a phenotype given information from the genotype (“gene” = segments of DNA) and it can be divided into 2 steps: Transcription and Translation. ...
Prokaryotic Gene Expression Mechanisms RNA Types of RNA Other
Prokaryotic Gene Expression Mechanisms RNA Types of RNA Other

... repressor for lacO to 2 x 1010, but the affinity for random DNA sequences remains the same. So the specificity of repressor for lacO drops 3 orders of magnitude (or 1000-fold). Under these conditions, you can calculate that less than 3% of the lacO sites should have repressor bound to them (when IPT ...
Gene Regulation
Gene Regulation

... demonstrate negative control because active repressors can only have negative effects on transcription. •Positive gene control occurs when an activator molecule interacts directly with the genome to switch transcription on or enhance transcription. ...
You Light Up My Life
You Light Up My Life

... • Uracil (U) pairs with adenine (A) ...
Protein Interactions in an Organism Compose the Interactome
Protein Interactions in an Organism Compose the Interactome

... Relationship between Genotype and Phenotype ...
8.6 Gene Expression and Regulation
8.6 Gene Expression and Regulation

... Every cell in your body has the same set of DNA BUT our cells are not the same! • Cells differ from each other because different sets of genes are expressed in different types of cells. • Eukaryotic cells can control/ regulate gene expression at several different points BUT one of the most highly re ...
Prokaryotic Cells, Eukaryotic cells and HIV: Structures, Transcription
Prokaryotic Cells, Eukaryotic cells and HIV: Structures, Transcription

... RNA will fold onto itself due to self-complementarity. This will create a hairpin structure that will help the newly synthesized RNA ‘push’ off RNA polymerase from the RNA/DNA hybrid. This is not always how it happens, but the example for you to remember. Eukaryotic transcription: Promoters – You ca ...
Name____________________________ DNA Investigation
Name____________________________ DNA Investigation

... 16---Find a website online that covers DNA, Replication, Transcription, Translation, and/or Mutations that is NOT listed on this sheet. Create 5 of your own “webquest” questions based on this website and write down the web address. ...
Chapter_17_answers
Chapter_17_answers

... o Initial site of RNA polymerase attachment o Includes start codon and several dozen nucleotide pairs “upstream”  Transcription factors o Mediate binding of RNA polymerase and initiation of transcription o Transcription factors + RNA polymerase = transcription initiation complex  TATA box o Transc ...
Protein Synthesis
Protein Synthesis

... Control Mechansisms • the human genome contains about 2000025000 genes that code for proteins • housekeeping genes code for proteins that are always needed in a cell; they are constantly being transcribed and translated • not all proteins are needed by all cells at all times, so gene regulation is ...
< 1 ... 308 309 310 311 312 313 314 315 316 ... 342 >

Transcriptional regulation

In molecular biology and genetics, transcriptional regulation is the means by which a cell regulates the conversion of DNA to RNA (transcription), thereby orchestrating gene activity. A single gene can be regulated in a range of ways, from altering the number of copies of RNA that are transcribed, to the temporal control of when the gene is transcribed. This control allows the cell or organism to respond to a variety of intra- and extracellular signals and thus mount a response. Some examples of this include producing the mRNA that encode enzymes to adapt to a change in a food source, producing the gene products involved in cell cycle specific activities, and producing the gene products responsible for cellular differentiation in higher eukaryotes.The regulation of transcription is a vital process in all living organisms. It is orchestrated by transcription factors and other proteins working in concert to finely tune the amount of RNA being produced through a variety of mechanisms. Prokaryotic organisms and eukaryotic organisms have very different strategies of accomplishing control over transcription, but some important features remain conserved between the two. Most importantly is the idea of combinatorial control, which is that any given gene is likely controlled by a specific combination of factors to control transcription. In a hypothetical example, the factors A and B might regulate a distinct set of genes from the combination of factors A and C. This combinatorial nature extends to complexes of far more than two proteins, and allows a very small subset (less than 10%) of the genome to control the transcriptional program of the entire cell.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report