• Study Resource
  • Explore
    • 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 Structure
Protein Structure

... • Over 50% of the body’s dry mass is protein; proteins are the most important organic molecule in the body. • The building blocks of proteins are amino acids. ...
3-in-1: A novel approach to study membrane protein pharmacology
3-in-1: A novel approach to study membrane protein pharmacology

... Membrane proteins make up about 25% of all proteins encoded by the human genome and are considered major drug targets. One type of membrane protein, the family of ligand-gated ion channels (LGICs), mediates crucial functions in the nervous system and has been implicated a numerous diseases. Most LGI ...
Interaction Site Evolution
Interaction Site Evolution

... DNA is the blueprint for generating strings of amino acids which fold into proteins. The interactions these proteins form with each other are primary components of organismal physiology. Proteins assume very specific shapes, and the amino acids on their surface involved in protein interactions are s ...
Accurate Peptide Fragment Mass Analysis: Multiplexed
Accurate Peptide Fragment Mass Analysis: Multiplexed

... Unique proteins identified mapped back to Ghaemmaghami et al.1 ...
Proteins for Growth and Repair
Proteins for Growth and Repair

... Too much protein can harm your body. If you eat too much protein the excess will be stored as body fat. Over-consumption of protein can also cause constipation, diarrhea, excessive gas, dehydration, dizziness and bad breath. ...
Chapter 5 - Richsingiser.com
Chapter 5 - Richsingiser.com

... Charlotte W. Pratt ...
076075.Supplemental Data Text
076075.Supplemental Data Text

... (SSPs) and the amount of protein in a spot was assessed as background corrected optical density, integrated over all pixels in the spot and expressed as integrated optical density (IOD). In order to normalize for differences in total staining intensity between different 2-DE images, the amount of di ...
Proteomics
Proteomics

... Bioinformatics core lab Function study in Tg/KO mouse core lab ...
Protein: How Cows and Carrots Become People 1. Your body can
Protein: How Cows and Carrots Become People 1. Your body can

... order to stay warm.. They succeed in staying warm, but have no wood to build the house. What does this story have to do with diets and protein? ...
2.4.3: List the functions of membrane proteins.
2.4.3: List the functions of membrane proteins.

... ...
Chapter 6: Protein 1. Identify the body's working proteins.
Chapter 6: Protein 1. Identify the body's working proteins.

... 3. What do proteins contain that carbohydrates and lipids do not? 4. _______________ are the building blocks of proteins. 5. What is an essential amino acid? How many are there? 6. What are proteins made of? Illustrate an example. 7. Globular shaped proteins are __________ proteins and are _________ ...
About Proteins
About Proteins

... Proteins can also change shape by other ways. If chemicals or heat are added to the protein, it can cause the amino acids to fold in different ways, changing the shape of the protein. This can be seen using an egg. Think about what the protein of an egg looks like. It is the clear part. When you coo ...
MH n
MH n

... Mycoplasma sp. sample (Munich 2006): -Database had ~ 700 entries; -Data accuracy had 0.7ppm average; -MMD used during search: 3 ppm. ...
Most Proteins Don`t Exist!
Most Proteins Don`t Exist!

... remember the exact details of when this was expected to happen, but it is true to say that progress has been slower than Perutz had predicted and we are now only just beginning to see the emergence of designer proteins. What we tend to forget, or perhaps not realise in the first place is that most p ...
Hands-on Exercise: Locating Protein Information
Hands-on Exercise: Locating Protein Information

... A variant of this protein with mutations in its amino acid sequence has been isolated (see link http://www.hsls.pitt.edu/guides/genetics/tutorials). ...
DN: Protein
DN: Protein

... sequence of the 20 different amino acids as illustrated on the left. In the feed lab, protein is distinguishable from carbohydrate and lipid due to its content of nitrogen (N) feed proteins typically contain about 16% N. This property makes it possible to estimate the protein content of a feedstuff ...
Mass spectrometry - Justin Benesch
Mass spectrometry - Justin Benesch

... resulted in covalent fragmentation of molecules • Soft ionisation techniques are ionisation of large ions without their fragmentation • Current ‘mass record’ is >100 MDa! • Soft ionisation techniques have revolutionised ‘proteomics’ the study of the proteins encoded by the genome ...
PHYS-2030 Tutorial 1 1. A protein molecule has a molar mass of
PHYS-2030 Tutorial 1 1. A protein molecule has a molar mass of

... of proteins is about 1300 kg m-3. If the protein molecule is spherical, what is (A) its radius, and (B) its surface-to-volume ratio? 2. Repeat Problem 1 for a protein with molar mass equal to 400 kDa. 3. The amino acid residues in a protein chain have an average molar mass of 120 Da. If all of the r ...
Structural Properties of Enzymes
Structural Properties of Enzymes

... FAB-MS (Fast Atom Bombardment-Mass Spectrometry) is a relatively new technique in which the protein of interest in dissolved in glycerol, and bombarded with high energy Xe or Ar atoms. The gas-phase ions thus created are propelled in electrical and magnetic fields proportional to their charge and ma ...
Capturing denaturing proteins * Small Heat Shock Protein substrate
Capturing denaturing proteins * Small Heat Shock Protein substrate

... sHSP chaperone action and interaction with substrates, therefore, has wide-ranging implications for understanding cellular stress and disease processes. We are studying the mechanism of sHSP substrate recognition by identifying specific crosslinking sites between sHSPs and denaturing substrates. sHS ...
Introduction Methods Procedure Conclusion and Future Work
Introduction Methods Procedure Conclusion and Future Work

... Conclusion and Future Work The matrix-assisted laser desorption/ionization time of flight (MALDI–TOF) was done before and after the modification of the lysine side chains. The molecular weight of the molecule that was synthesized matched our predicted values. Therefore we continued the experiment We ...
appendix 2
appendix 2

... Instruct the user to go through IDD-1. Extraction of bacterial protein, IDD11. Protein quantification, IDD-14. Isoelectric focusing, IDD-17. SDSPAGE , IDD-19. Coomassie staining, IDD-23. DIGE gel scanning, IDD-24. DIGE gel analysis. Use the pictures from previous slide to show in short the animation ...
Growth Hormone Releasing Hormone (GHRH) - Cloud
Growth Hormone Releasing Hormone (GHRH) - Cloud

... (determined by the LAL method). Formulation: Supplied as lyophilized form in PBS, pH7.4, containing 5% sucrose, 0.01% sarcosyl. Predicted isoelectric point point:: 8.7 Predicted Molecular Mass: 37.4kDa Accurate Molecular Mass: 43.5kDa as determined by SDS-PAGE reducing conditions. Applications: SDS- ...
Rational Drug Design
Rational Drug Design

...  Good targets for drug design  Drug Zanamavir (marketed as Relenza) binds to the neuraminidase protein (N) ...
Catherine E. Costello, Ph.D. Professor of Biochemistry, Biophysics
Catherine E. Costello, Ph.D. Professor of Biochemistry, Biophysics

... Professor Klaus Biemann, a mass spectrometry pioneer at the Massachusetts Institute of Technology, she served for 20 years as the Associate Director of the mass spectrometry resource at MIT. In 1994 she was recruited to Boston University School of Medicine, where she established an internationally r ...
< 1 ... 104 105 106 107 108 109 110 >

Protein mass spectrometry



Protein mass spectrometry refers to the application of mass spectrometry to the study of proteins. Mass spectrometry is an important emerging method for the characterization of proteins. The two primary methods for ionization of whole proteins are electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI). In keeping with the performance and mass range of available mass spectrometers, two approaches are used for characterizing proteins. In the first, intact proteins are ionized by either of the two techniques described above, and then introduced to a mass analyzer. This approach is referred to as ""top-down"" strategy of protein analysis. In the second, proteins are enzymatically digested into smaller peptides using a protease such as trypsin. Subsequently these peptides are introduced into the mass spectrometer and identified by peptide mass fingerprinting or tandem mass spectrometry. Hence, this latter approach (also called ""bottom-up"" proteomics) uses identification at the peptide level to infer the existence of proteins.Whole protein mass analysis is primarily conducted using either time-of-flight (TOF) MS, or Fourier transform ion cyclotron resonance (FT-ICR). These two types of instrument are preferable here because of their wide mass range, and in the case of FT-ICR, its high mass accuracy. Mass analysis of proteolytic peptides is a much more popular method of protein characterization, as cheaper instrument designs can be used for characterization. Additionally, sample preparation is easier once whole proteins have been digested into smaller peptide fragments. The most widely used instrument for peptide mass analysis are the MALDI time-of-flight instruments as they permit the acquisition of peptide mass fingerprints (PMFs) at high pace (1 PMF can be analyzed in approx. 10 sec). Multiple stage quadrupole-time-of-flight and the quadrupole ion trap also find use in this application.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report