• 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
Using Mascot to characterise protein modifications
Using Mascot to characterise protein modifications

... and isolation of the 1-50 residue amino terminus by off-line HPLC. A second digestion with Chymotrypsin is performed on the 1-50 fragment to produce peptides of suitable lengths for tandem mass spectrometry experiments. Peptides are then derivatized by the addition of the propionic anhydride reagent ...
File
File

... 2.Which parts of amino acids are involved in peptide bonds? A. The carboxyl group on one amino acid and the side chain on the other B. The carboxyl group on both amino acids C. The amino group on one amino acid and the carboxyl group on the other D. The amino group on both amino acids ...
Functional decorations: post-translational modifications and heart
Functional decorations: post-translational modifications and heart

... (O-GlcNAcylation) to serine or threonine residues of predominantly nucleocytoplasmic proteins. O-GlcNAc thus has the potential to compete with phosphorylation for binding sites [49]. This has led to the proposal of OGlcNAc-phosphate crosstalk (see below), although there are currently few examples of ...
SR Proteins - The Plant Cell
SR Proteins - The Plant Cell

... subfamilies will allow grouping of paralogous proteins and simple assignment of newly discovered SR orthologs from other plant species. In addition, exon-intron structures of genes coding for SR proteins are conserved across plant species within each subfamily (Iida and Go, 2006; Kalyna et al., 2006 ...
Check out some healthy foods for runners here.
Check out some healthy foods for runners here.

... stave off Alzheimer's disease and some cancers. Anthocyanins may also assist with postrun recovery and muscle repair. Not bad for a fruit group that contains a mere 60 calories or so per cup. And remember: Frozen berries are just as nutritious as fresh ones, but they keep far longer (up to nine mont ...
Identification of genes and proteins involved in the
Identification of genes and proteins involved in the

... GFP ([Glu1]-Fibrinopeptide B from Sigma) solution. Mass data acquisitions were piloted by MassLynx software (Waters, USA) using automatic switching between MS and MS/ MS modes. 2.5. Data interpretation and protein identification In a first step, the complete .pkl files were submitted to protein data ...
Sodium dodecyl sulfate (L3771)
Sodium dodecyl sulfate (L3771)

... Sigma-Aldrich, Inc. warrants that its products conform to the information contained in this and other Sigma-Aldrich publications. Purchaser must determine the suitability of the product(s) for their particular use. Additional terms and conditions may apply. Please see reverse side of the invoice or ...
Document
Document

...  Amphoteric, amphiprotic: act as acid or base  Ionic: electrolyte  Ampholyte: amphoteric electrolyte (in a pH gradient under an electric field, moves to its isoelectric point) ...
Potassium sulfate - Sigma
Potassium sulfate - Sigma

... Sigma-Aldrich, Inc. warrants that its products conform to the information contained in this and other Sigma-Aldrich publications. Purchaser must determine the suitability of the product(s) for their particular use. Additional terms and conditions may apply. Please see reverse side of the invoice or ...
Part 2
Part 2

... Liquid chromatography ...
guide PDF
guide PDF

... your discussion. What does the dual nature of proteins mean for our understanding of biology? How do we think about friends versus foes in the body? What other biological agents are helpful or harmful depending on their type or form? (Possible agents include genes that are normal or variant, microbe ...
All About Proteins Proteins are highly folded polymers constructed
All About Proteins Proteins are highly folded polymers constructed

... memorize them. You DO need to recognize and be able to draw the general structure of an amino acid shown at left. The R groups are important because they may make an amino acid nonpolar, or polar, and some of the polar ones may become charged in water or act as acids or bases. These properties will ...
Potassium sulfate ACS Reagent Product Number - Sigma
Potassium sulfate ACS Reagent Product Number - Sigma

... Sigma-Aldrich, Inc. warrants that its products conform to the information contained in this and other Sigma-Aldrich publications. Purchaser must determine the suitability of the product(s) for their particular use. Additional terms and conditions may apply. Please see reverse side of the invoice or ...
Evolution
Evolution

... Where Do Humans Fit In? – DNA analysis Should Birds be Considered a Type of Reptile? – protein analysis ...
7.3 Translation assessment statements
7.3 Translation assessment statements

... acids connected to adjacent tRNA found in both A and P sites at the same time. o E site = Exit site where the tRNA is shifted to as it is released from its amino acid and mRNA.  Disassembly of the components follows termination of translation. Analyse the structure of eukaryotic ribosomes and tRNA ...
Dr Una Fairbrother
Dr Una Fairbrother

... Each turn has 3.6 amino acid residues Each turn extends 5.4Å along the long axis Hydrogen bonds ...
Dreissena
Dreissena

... The zebra mussel (Dreissena polymorpha) and quagga mussel (Dreissena bugensis) are changing the Great Lakes ecosystem and surrounding fresh waters. They alter ecosystems through their voracious filter feeding ability that removes algae, bacteria, and protozoa from the water column which disrupts the ...
Oncoprotein metastasis: an expanded topography
Oncoprotein metastasis: an expanded topography

... and its associated co-concept on “peptide strings“, the term “oncoprotein metastasis” was initially proposed in 2007 [7], subsequently mentioned as one among several aspects of epigenetic or non-genetic regulation of cancer cell fate in 2008 [8] and more recently revisited in 2010 [9]. It denominate ...
Tailor-Made Proteins and Peptides for Quantum Interference
Tailor-Made Proteins and Peptides for Quantum Interference

... P. Schmid, F. Stöhr, M. Arndt, J. Tüxen, M. Mayor, “Single-photon ionization of organic molecules beyond 10 kDa”, J. Am. Soc. Mass Spectr., 2013, 24, 602. ...
Gene Section HNRNPK (heterogeneous nuclear ribonucleoprotein K)
Gene Section HNRNPK (heterogeneous nuclear ribonucleoprotein K)

... approach to compare the protein expression of normal colon epithelium to colorectal cancer tissues. The overexpression and cytoplasmatic localization of hnRNP K correlated with advancement of colorectal cancer. In normal colon K protein was detected only in the nucleus whereas in tumour tissues the ...
Site-specific functionalization of proteins and their applications to
Site-specific functionalization of proteins and their applications to

... The oldest and most straightforward method for labeling proteins is via the primary amino groups on lysine residues and at the Nterminus. In general, multiple accessible lysines and thus reactive amines are present on the protein surface, resulting in efficient labeling but inevitably leading to het ...
Learn how a text-mining tool helps researchers make these vital
Learn how a text-mining tool helps researchers make these vital

... investigators can identify and define the specificity of disease biomarkers. They can use Elsevier’s biology solution to identify proteins directly downstream from transcriptionally modulated processes by focusing on transcription factors associated with that disease, and then on downstream secreted ...
Acetyl chloride (A0772) - Product Information Sheet - Sigma
Acetyl chloride (A0772) - Product Information Sheet - Sigma

... corresponding thiohydantoins that incorporates acetyl chloride has been published.5 The use of acetyl chloride in the synthesis of cladribine (2-chloro-2'deoxyadenosine) from 2'-deoxyguanosine has been reported.6 Acetyl chloride can induce activation of a reporter gene which codes for a green fluore ...
[Ru(NH 3 ) 5 (His33)] 2+ @ 18 Å from heme
[Ru(NH 3 ) 5 (His33)] 2+ @ 18 Å from heme

... Rates of reduction of Os(III), Ru(III), and Re(I) by Cu(I) in His83-modified Pseudomonas aeruginosa azurins (Az) (M-Cu distance approximately 17 Å) have been measured in single crystals, where protein conformation and surface solvation are precisely defined by high-resolution X-ray structure determi ...
- SlideBoom
- SlideBoom

... We are providing entire range of Supplements to suit your dietary requirements, namely Protein, Casein Protein, Isolate Protein, Soy Protein, Whey Protein, Gainers, Pre and Post Workout, Carbs, Creatine and Fat Burner. Shop from quality brands like HealthAid, HealthVit, Herbal Hills, Optimum Nutriti ...
< 1 ... 42 43 44 45 46 47 48 49 50 ... 111 >

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 © 2026
  • DMCA
  • Privacy
  • Terms
  • Report