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... Chemical Structure of Proteins ◦ Proteins are built from amino acids held together by peptide bonds. The amino acids confer shape and properties to the protein. ◦ Two or more polypeptide chains may associate to form a protein complex. Each cell type has characteristic proteins associated with its fu ...
Antisense RNA
Antisense RNA

... hindering the transcription of specific genes. a system within living cells that takes part in controlling genes activity. Two types of small RNA molecules –small interfering RNA (siRNA), microRNA (miRNA) Mello and Fire named the process RNAi, were awarded the Nobel Prize. ...
No Slide Title
No Slide Title

... for galactose catabolism •Speeds induction of GAL genes ...
12-3
12-3

... RNA Editing Some DNA within a gene is not needed to produce a protein. These areas are called introns. The DNA sequences that code for proteins are ...
MBch13(2008)
MBch13(2008)

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Chapter 22 (Part 2)
Chapter 22 (Part 2)

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A Few Good Domains
A Few Good Domains

... mediate most, if not all, cellular membrane fusion events. Most SNAREs are Cterminally anchored integral membrane proteins capable of entering into a coiled-coil interaction with other SNARE proteins. All SNARE proteins share a homologous domain of approximately 60 amino acids referred to as the SNA ...
Document
Document

... • 13.1 RNA Consisting of a Single Strand of Ribonucleotides Participates in a Variety of Cellular Functions • 13.2 Transcription Is the Synthesis of an RNA Molecule from a DNA Template • 13.3 The Process of Bacterial Transcription Consists of Initiation, Elongation, and Termination • 13.4 The Proces ...
ppt2 DNA Transcription and Translation
ppt2 DNA Transcription and Translation

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Untitled
Untitled

... hydrophobic interactions between Phe-repeats are relatively weak, flexible, filamentous Phe-Gly nucleoporins Sieve like structure that helps keep out proteins and RNA. Phe residues are sufficiently exposed to allow rapid binding of transport receptors. The aggregates in fact display an organization ...
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Biocatalytic Synthesis of Polymers of Precisely Defined Structures
Biocatalytic Synthesis of Polymers of Precisely Defined Structures

... has been the repeat sequence targeted for production of materials having the properties of silk fibers. Joseph Cappello and coworkers at Protein Polymer Technologies, Inc. (PPTI) have reported the expression in E. coli of high molecular weight (40-100 kDa) proteins that incorporate blocks of the B. ...
by David Holzman Unlike its twin
by David Holzman Unlike its twin

... In both DNA and RNA the sequence of nucleotides, or bases, which are the letters of the genetic alphabet, encodes the recipe for protein. Each protein is encoded in a stretch of bases that makes up a gene. In DNA, other base sequences appear in a region located upstream from each gene or group of ge ...
New Computational Tools Help Solve Puzzle of RNA Structure
New Computational Tools Help Solve Puzzle of RNA Structure

... “My mentors taught me 30 years ago, long before it was fashionable, that RNA has unique properties that were not appreciated at the time,” Gutell says. He says he is also driven by an awareness that “great discoveries result from fresh and novel changes in our modeling of complex systems such as mol ...
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N - KIAS

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Transcription
Transcription

... The –35 sequence is used for initial recognition, and the –10 sequence is used for the melting reaction that converts a closed complex to an ...
RNA structure and synthesis:
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...  Unlike DNA, They differ as a group from DNA in several ways: o they are considerably smaller than DNA. o they contain ribose instead of deoxyribose and uracil instead of thymine. o most RNAs exist as single stranded entity that are capable of folding into complex structures. ...
Biologie des ARN/RNA Biology
Biologie des ARN/RNA Biology

... Coding-Dependent and Coding-Independent Functions of Localized RNAs 1. Two mRNAs encoded by functionally related genes (G1 and G2). 2. Bound by RNA binding protein that recognizes common element in mRNAs. 3. mRNAs are exported from the nucleus into the cytoplasm. 4. Then they are transported to the ...
Proteolysis in Mixed Organic-Aqueous Solvent
Proteolysis in Mixed Organic-Aqueous Solvent

... Despite improvements in 2D-gel electrophoresis, very large or very small hydrophobic proteins, as well as proteins with high and low pI, are not easily identified on these gels.8-11 Recently, there have been efforts to analyze complex protein mixtures without the use of gel electrophoresis by separa ...
SMN1
SMN1

... Small nuclear ribonucleoproteins (snRNPs) are active in recognizing and removing introns from pre-mRNA in the nucleus. Each snRNP particle is composed of small nuclear RNA (snRNA) of approximately 150 nucleotides, several Sm proteins and a number of specific proteins that are unique for each snRNP. ...
Developmental Changes in the Potassium Chloride
Developmental Changes in the Potassium Chloride

... In the developing rat brain, the early period after birth is characterized by extensive cellular proliferation and differentiation. This period is followed by one of growth and maturation in which myelination is one of the most significant events taking place. We have begun investigations into the c ...
ppt link
ppt link

... Genetic information transcribed from DNA to mRNA as a nonoverlapping, degenerate triplet code 1 codon = 1 amino acid but 1 amino acid > 1 codon 2 key molecules responsible for decoding nucleotide sequence into amino acid sequence are tRNAs and aminoacyl-tRNA synthetases 3 base anticodon in tRNA allo ...
Chapter 15: Amines 1. What are the different types of amines? Be
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... 4.! What is the primary structure of a protein and what conventions are used for drawing and naming primary structures?  Be able to define protein primary structure, explain how primary structures are represented, and draw and name a simple protein structure, given its amino acid sequence. 5.! What ...
rna, meet small molecules
rna, meet small molecules

... ©2016 BIOCENTURY PUBLICATIONS, INC. ...
Lecture outlines: RNA to proteins
Lecture outlines: RNA to proteins

... rRNA and tRNA generally called “stable RNAs” (have long half-lives) while mRNAs are degraded fairly rapidly (in E. coli, typical mRNA with half-life of a few minutes). Generally, do not see processing of mRNAs in bacterial cells (as seen in eukaryotes; Fig. 8.12). Exception to this are the RNAs tran ...
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LSm



In molecular biology, LSm proteins are a family of RNA-binding proteins found in virtually every cellular organism. LSm is a contraction of 'like Sm', because the first identified members of the LSm protein family were the Sm proteins. LSm proteins are defined by a characteristic three-dimensional structure and their assembly into rings of six or seven individual LSm protein molecules, and play a large number of various roles in mRNA processing and regulation.The Sm proteins were first discovered as antigens targeted by so-called Anti-Sm antibodies in a patient with a form of Systemic lupus erythematosus (SLE), a debilitating autoimmune disease. They were named Sm proteins in honor of Stephanie Smith, a patient who suffered from SLE. Other proteins with very similar structures were subsequently discovered and named LSm proteins. New members of the LSm protein family continue to be identified and reported.Proteins with similar structures are grouped into a hierarchy of protein families, superfamilies, and folds. The LSm protein structure is an example of a small beta sheet folded into a short barrel. Individual LSm proteins assemble into a six or seven member doughnut ring (more properly termed a torus), which usually binds to a small RNA molecule to form a ribonucleoprotein complex. The LSm torus assists the RNA molecule to assume and maintain its proper three-dimensional structure. Depending on which LSm proteins and RNA molecule are involved, this ribonucleoprotein complex facilitates a wide variety of RNA processing including degradation, editing, splicing, and regulation.Alternate terms for LSm family are LSm fold and Sm-like fold, and alternate capitalization styles such as lsm, LSM, and Lsm are common and equally acceptable.
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