• 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
Presentation
Presentation

... whereby the presence of certain fragments of double-stranded RNA (dsRNA) interferes with the expression of a particular gene which shares a homologous sequence with the dsRNA. ...
DNA History and Structure
DNA History and Structure

... – What is the other type of nucleic acid? • RNA • DNA function – to hold genetic code – Genetic code = genetic instructions to make proteins • DNA is found in nucleus of eukaryotic cells • Found in nucleoid region in prokaryotes ...
Unit 13: Review Biotechnology Lab
Unit 13: Review Biotechnology Lab

... After the mRNA is synthesized it moves into the cytoplasm and becomes associated with the ribosome. Translation is the process of having tRNA molecules bring in correct amino acids which are linked to one another. ...
DNA Protein Synthesis PPT File
DNA Protein Synthesis PPT File

... • Proteins are essential to the structure and function of all living cells. • Example: Some proteins form the cytoskeleton. Some become antibodies in the immune system. • Proteins also determine what an organism will become. ...
DNA - Needham.K12.ma.us
DNA - Needham.K12.ma.us

... • Mutations happen all the time, in every species. • Mutations are usually harmful or neutral --mutations are rarely beneficial. • Mutations can cause cancer & some diseases (bad). • Mutations are the only way to bring new genes (traits) into a species (good for evolution). So, just like Goldilocks ...
2013 DNA/Replication Notes
2013 DNA/Replication Notes

... phosphate backbone on the outside (thus the bases of DNA, which are the "code" for inheritance, were on the inside of the helix). Calculations from the photograph also provided crucial parameters for the size of the helix and its structure, all of which were critical for the molecular modeling under ...
RNA and Protein Synthesis Section 12-3 pgs 300-306
RNA and Protein Synthesis Section 12-3 pgs 300-306

... At the same time, the ribosome _________________________________ that held the first tRNA molecule to its amino acid and releases the tRNA molecule. ...
Comparison of Peripheral Blood Mononuclear Cell DNA and
Comparison of Peripheral Blood Mononuclear Cell DNA and

... • To determine the susceptibility and potential efficacy of ART combinations in drug experienced patients. – Approved methods for Genotyping use plasma viral RNA (vRNA) pol gene. – However, RNA can be difficult to work with • Viral RNA is less stable than proviral DNA • Requires RT step before PCR a ...
DNA, RNA, and Protein Synthesis Notes Part 2
DNA, RNA, and Protein Synthesis Notes Part 2

...  DNA contains a triplet code  Every three bases on DNA stands for ONE amino acid  Each three-letter unit on mRNA is called a codon  Most amino acids have more than one codon!  There are 20 amino acids with a possible 64 different triplets  The code is nearly universal among living organisms ...
Molecular Theory of Inheritence
Molecular Theory of Inheritence

... ii. At origin, DNA strand breaks because of an incision (nick). This is made by an enzyme called incision enzyme (endonuclease). iii. The hydrogen bonds joining the two strands are broken by the enzyme. iv. The two strands start unwinding. This takes place with the help of a DNA unwinding enzyme Hel ...
7 DNA
7 DNA

... bonds with Thymine and that Cytosine always bonds with Guanine. ...
B6-AB DNA
B6-AB DNA

... Two individual nucleotide strands are joined by hydrogen bonds between their respective nucleotide bases. In this way, the DNA molecule may be pictured like a ladder. Together, the sugars plus the phosphate groups make up the vertical beams of the ladder, and the nucleotides make up the horizontal r ...
Chapter 5
Chapter 5

... the helix and are held together by covalent bonds • The nitrogen bases are in the middle and pair up to connect the 2 sides using hydrogen bonds ...
Quick Links
Quick Links

... Folder: Contains the 30 base-pair DNA sequence sheets. ...
Wear a chimp on your wrist
Wear a chimp on your wrist

... Folder: Contains the 30 base-pair DNA sequence sheets. ...
DNA structure lab protocol
DNA structure lab protocol

... called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule. Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix. The structure of the double helix is somewhat like a ladd ...
DNA Molecular Structure
DNA Molecular Structure

... nucleotides into the language of amino acids • ribosomes - translate sequence of nucleotides into the sequence of amino acids – occur mainly in cytosol, on surface of rough ER, and nuclear envelope – consists of two granular subunits, large and small • each made of several rRNA and enzyme molecules ...
Document
Document

... The “parent” molecule has two complementary strands of DNA. Each is base paired by hydrogen bonding with its specific partner: A with T G with C ...
By Kristie Akl
By Kristie Akl

... The “parent” molecule has two complementary strands of DNA. Each is base paired by hydrogen bonding with its specific partner: A with T G with C ...
Working with Data The Meselson–Stahl Experiment
Working with Data The Meselson–Stahl Experiment

... replication, all of the DNA was of intermediate density, proving the conservative model false. After the second round of replication, half of the DNA was intermediate and half was light only, proving the dispersive model false. These results were, however, consistent with a semiconservative model of ...
De novo sample preparation guidelines
De novo sample preparation guidelines

... De novo sample preparation guidelines Genomic DNA for de novo projects IGATech offers nucleic acids extraction (including high molecular weight DNA) service and we can set up a dedicated extraction workflow for your specific substrate. Please enquire. The quality of the DNA sample can have a signifi ...
DNA helicase activity in Werner`s syndrome gene
DNA helicase activity in Werner`s syndrome gene

... The gene responsible for Werner’s syndrome (WRN) contains a region homologous to the Escherichia coli RecQ type DNA helicase and was thought to code for a DNA helicase belonging to this helicase family. However, no evidence has been shown before to substantiate this prediction. Here, we show data th ...
DNA - speringbio
DNA - speringbio

... • Transcription is similar to DNA replication, but the result is single stranded with Uracils in the place of Thymines • The resulting RNA will be complimentary to the DNA strand used ...
Ch 9 Study Guide
Ch 9 Study Guide

... In DNA, four forms of this molecule each have a different type of nitrogen base. Know what a nucleotide molecule looks like. The combined efforts of approximately 100 replication forks make it possible to replicate an entire human chromosome in about 8 hours. The process by which DNA polymerase is a ...
Nucleotides and Nucleic Acids - Rose
Nucleotides and Nucleic Acids - Rose

... RNA Structure Unlike DNA, RNA can form complex three-dimensional structures. As a result, RNA can also exhibit catalytic activity. The combination of the ability to store genetic information with the ability to catalyze reactions has resulted in a proposal for the origin of life: the “RNA World”. T ...
< 1 ... 46 47 48 49 50 51 52 53 54 ... 148 >

Helicase



Helicases are a class of enzymes vital to all living organisms. Their main function is to unpackage an organism's genes. They are motor proteins that move directionally along a nucleic acid phosphodiester backbone, separating two annealed nucleic acid strands (i.e., DNA, RNA, or RNA-DNA hybrid) using energy derived from ATP hydrolysis. There are many helicases resulting from the great variety of processes in which strand separation must be catalyzed. Approximately 1% of eukaryotic genes code for helicases. The human genome codes for 95 non-redundant helicases: 64 RNA helicases and 31 DNA helicases. Many cellular processes, such as DNA replication, transcription, translation, recombination, DNA repair, and ribosome biogenesis involve the separation of nucleic acid strands that necessitates the use of helicases.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report