• 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
1. Introduction 2. Fundamentals 3. Glycosylation 4
1. Introduction 2. Fundamentals 3. Glycosylation 4

... hypermannosylate but use several additional types of sugars to synthesize an Nglycan of the complex type. So if a human glycoprotein is expressed in yeast, the sequence of the amino acids will be right, even the location of the glycosylation will be right, but the glycan isn’t of the complex type bu ...
Chemical composition and functions of saliva
Chemical composition and functions of saliva

... and microbial products such as glucans and glucosyltransferase  Pellicle acts as a diffusion barrier, slowing both attacks by bacterial acids and loss of dissolved calcium and phosphate ions ...
Chapter 17 Gene To Protein
Chapter 17 Gene To Protein

... with only 4 nucleotide bases (A,U,G,C)? ...
The molecular basis of genetic dominance.
The molecular basis of genetic dominance.

... mechanism producing loss of function: deletion, chromosome translocation, truncation caused by nonsense and frameshift mutation, and some promoter and splice site mutations and amino acid substitutions may all be responsible. Such variety will tend to increase the frequency with which the disease is ...
Coupling Coherence Distinguishes Structure Sensitivity in Protein
Coupling Coherence Distinguishes Structure Sensitivity in Protein

... Quantum mechanical analysis of electron tunneling in nine thermally fluctuating cytochrome b562 derivatives reveals two distinct protein-mediated coupling limits. A structure-insensitive regime arises for redox partners coupled through dynamically averaged multiple-coupling pathways (in seven of the ...
Chapter 7. Intracellular Sorting and the maintenance of cellular
Chapter 7. Intracellular Sorting and the maintenance of cellular

... A. The Dynamic Nature of the Endomembrane System※: Most organelles are part of a dynamic system in which vesicles move between compartments. The dynamic activities of endomembrane systems are highly conserved despite the structural diversity of different cell types. Biosynthetic pathways move protei ...
HASPI Medical Biology Lab 07a Background
HASPI Medical Biology Lab 07a Background

... different polymer when they are bonded together. ...
Molecular Biology Through Discovery Companion to Wrinch (1936
Molecular Biology Through Discovery Companion to Wrinch (1936

... pictured the chromosome micelle,…, as an aggregate of identical sequences of molecules in parallel." Picture? Great! Where is it? SQ10. Can you find a picture in this article of the aggregate of which Wrinch speaks? Yes you can, but you might have to look ahead a bit. Keep that figure in mind (and p ...
7 Putting genetics into optogenetics: knocking out proteins with light
7 Putting genetics into optogenetics: knocking out proteins with light

... ill health. Second, some genes are mutated to lethality; that is, the mutants die during development, making it difficult to study the role of a gene at later time points. Third, some genes are required for the viability of a cell; for example, genes involved in basic cellular functions, like transc ...


... When resources are scarce, mycobacteria stop growing to make way for genes adaptation allow. Conversely, when growth continues under stress conditions, specific genes metabolic networks for protection are activating. In this sense, the protein encoded by esat-6 (early secretory antigenic target, 6 k ...
The Tryptophan Mutant in the Human Immunodeficiency Virus Type
The Tryptophan Mutant in the Human Immunodeficiency Virus Type

... in E. coli and purified by Ni2+ column chromatography. To determine that the protein expression and purification method had been successful, a 12% polyacrylamide gel of the protein fractions collected were run and Coomassie stained (Figure 1). Protein presence was confirmed by the visible bands on the ...
The direct route: a simplified pathway for protein import into the
The direct route: a simplified pathway for protein import into the

... agent of the deadly human African trypanosomiasis (‘sleeping sickness’); transmitted by the tsetse fly, it kills 300 000 people each year in sub-Saharan Africa [4]. Besides its clinical importance T. brucei has attracted interest because of its rich biology in general, and the many intriguing featur ...
Hydrophobic Interaction Chromatography (HIC
Hydrophobic Interaction Chromatography (HIC

... Hydrophobic* Interaction Chromatography (HIC) protocol for the protein purification station *Hydrophobic literally means “water fearing.” It refers to substances that do not mix well with water (i.e., Oil is hydrophobic). Note how it stays together in small beads and does not mix with water. Purpose ...
Suppressor genetics II
Suppressor genetics II

... Note also that all of the bypass suppressors, whether in parallel or the same pathway, are predicted to be gene specific. e.g., ced-3 will suppress ced-9 alleles, but not mutant alleles of other genes; for example, those involved in muscle function. ...
Goble, 2001
Goble, 2001

... Find rat proteins that have a domain with a sevenpropeller domain architecture Find the binding sites of human enzymes with zinc cofactors …. How many sources are involved per question? …. How difficult to find these answers without integration?.... For someone unfamiliar with the resources? ...
Evolutionary basins of attraction and convergence in plants and
Evolutionary basins of attraction and convergence in plants and

... As an organism evolves, its phenotype Some proteins present in the last different biochemical pathways. This will be limited among other things by common ancestor of plant and animal demonstrates that sometimes evolutionary the bounds of protein function. Certain lineages appear to have preadaptatio ...
9 Production of Proteins from Cloned Genes
9 Production of Proteins from Cloned Genes

... What sorts of studies can we do with pure proteins? Obviously, one thing to do with a pure protein is to determine its three-dimensional structure, by using structural methods such as X-ray crystallography or nuclear magnetic resonance (NMR) spectroscopy. The structure of a protein gives very import ...
Probing protein–membrane interactions using optical traps
Probing protein–membrane interactions using optical traps

... 7.3.1. Bead–bead interactions In order to measure interactions between the two membranes, the lipid bilayers have to be brought in close proximity. However, since the beads vary in size ( 4 % STDEV), the distance at which the two bilayers are actually touching varies from bead to bead. Therefore, t ...
the specificity and stability of the triton
the specificity and stability of the triton

... framework was in the presence of high concentrations of protein and low concentrations of detergent; under these conditions lipid also failed to be extracted. Since the critical micelle concentration of Triton X-100 is 19 mg/100ml (Helenius, McCaslin, Fries & Tanford, 1979), equal amounts of free de ...
Structure and Function of the Groucho Gene Family and Encoded
Structure and Function of the Groucho Gene Family and Encoded

... WRPW motif and Groucho protein is required for transcriptional repression by these proteins in Drosophila embryos and cultured cells. Embryos lacking Groucho proteins exhibit mutant phenotypes consistent with functional roles for Groucho proteins as corepressors for the Hairy, Enhancer of split, and ...
Powerpoint Show on Dot Matrix
Powerpoint Show on Dot Matrix

... 2. I have a unique sequence. Is there similarity to another gene that has a known function? 3. I found a new protein in a lower organism. Is it similar to a protein from another species? 4. I have decided to work on a new gene. The people in the field will not give me the plasmid. I need the complet ...
Cell Behaviour 2 - Cell Shape and Movement Anil Chopra Describe
Cell Behaviour 2 - Cell Shape and Movement Anil Chopra Describe

... Microtubules are polymers made up from the monomer tubulin of which there are 2 types α-tubulin and β- tubulin (γ-tubulin is also found on centrioles). They are polar hollow cylinders made up from around 13 tubulin monomers. One end is the plus end (where elongation occurs) and the other is the minu ...
Nucleic Acids
Nucleic Acids

... 1) Name the monomer of nucleic acids. 2) Draw & Label a nucleotide. 3) How are the four nitrogen bases of DNA abbreviated? RNA? 4) What does the phosphate molecule of a nucleotide bond with? 5) What do you call a section of DNA that codes for a specific protein? 6) If the DNA nitrogen bases were TAC ...
Basic Principle in Plant Physiology
Basic Principle in Plant Physiology

... – Reactions occur at lower temperatures and at higher rates ...
Detection of Cellular Response to an in vitro Challenge with
Detection of Cellular Response to an in vitro Challenge with

... nodes, where small groups of PTMs, likely to occur on the same peptide, are searched in each node. This allows for higher-confidence assignments due to the reduced size of each database, albeit at an increased search computational time. Pathway information was processed using Thermo Scientific™ Prot ...
< 1 ... 174 175 176 177 178 179 180 181 182 ... 456 >

Protein moonlighting



Protein moonlighting (or gene sharing) is a phenomenon by which a protein can perform more than one function. Ancestral moonlighting proteins originally possessed a single function but through evolution, acquired additional functions. Many proteins that moonlight are enzymes; others are receptors, ion channels or chaperones. The most common primary function of moonlighting proteins is enzymatic catalysis, but these enzymes have acquired secondary non-enzymatic roles. Some examples of functions of moonlighting proteins secondary to catalysis include signal transduction, transcriptional regulation, apoptosis, motility, and structural.Protein moonlighting may occur widely in nature. Protein moonlighting through gene sharing differs from the use of a single gene to generate different proteins by alternative RNA splicing, DNA rearrangement, or post-translational processing. It is also different from multifunctionality of the protein, in which the protein has multiple domains, each serving a different function. Protein moonlighting by gene sharing means that a gene may acquire and maintain a second function without gene duplication and without loss of the primary function. Such genes are under two or more entirely different selective constraints.Various techniques have been used to reveal moonlighting functions in proteins. The detection of a protein in unexpected locations within cells, cell types, or tissues may suggest that a protein has a moonlighting function. Furthermore, sequence or structure homology of a protein may be used to infer both primary function as well as secondary moonlighting functions of a protein.The most well-studied examples of gene sharing are crystallins. These proteins, when expressed at low levels in many tissues function as enzymes, but when expressed at high levels in eye tissue, become densely packed and thus form lenses. While the recognition of gene sharing is relatively recent—the term was coined in 1988, after crystallins in chickens and ducks were found to be identical to separately identified enzymes—recent studies have found many examples throughout the living world. Joram Piatigorsky has suggested that many or all proteins exhibit gene sharing to some extent, and that gene sharing is a key aspect of molecular evolution. The genes encoding crystallins must maintain sequences for catalytic function and transparency maintenance function.Inappropriate moonlighting is a contributing factor in some genetic diseases, and moonlighting provides a possible mechanism by which bacteria may become resistant to antibiotics.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report