Mass Spectrometry

Doctor Thomas Nuhse explains that mass spectrometry is a technique for measuring the mass of molecules, which therefore allows researchers to identify molecules.

Mass spectrometry is quite simply a way of measuring the mass of molecules, very simply. In the context of biology, quite recently mass spectrometers have developed to a point where we can measure the mass of peptides and proteins and nucleic acids for example. If we use the right preparation techniques, measuring the mass of a protein or also the mass of the peptides that come from protein can tell us what the protein is, and that is something that is very often at the center of biological research, finding out which protein is it that I have identified, that I have isolated or purified in something. And mass spectrometry has developed recently to a point where we can analyze with such precision the mass of a protein or its fragments, that we can say that "this is protein A or B or C."

mass, spectrometry, spectrometer, peptide, protein, molecule, weigh, measure, identify, thomas, nuhse,

Related Content

1298. Proteins

Doctor Thomas Nuhse explains that proteins are the molecules in cells that perform the key functions of the cell. They are the building bricks of the cell.

  • ID: 1298
  • Source: G2C

1299. Enzymes

Doctor Thomas Nuhse explains that enzymes are proteins in a cell that perform the cell's chemistry.

  • ID: 1299
  • Source: G2C

1219. Proteomics

Professor Seth Grant provides a definition of proteomics - the study of the properties of a large numbers of proteins.

  • ID: 1219
  • Source: G2C

1300. Kinases

Doctor Thomas Nuhse explains that kinases are enzymes that are specialized for attaching a phosphate group to another protein.

  • ID: 1300
  • Source: G2C

1302. Phosphorylation

Doctor Thomas Nuhse explains that phosphorylation is the process by which a phosphate is added to a protein to produce a change in that protein.

  • ID: 1302
  • Source: G2C

1301. Protein-protein Interactions

Doctor Thomas Nuhse describes the process by which proteins interact and work together to produce an outcome.

  • ID: 1301
  • Source: G2C

16880. Dino Protein is for the Birds

Organic material from a T. rex bone shows that birds are the closest living relatives of dinosaurs.

  • ID: 16880
  • Source: DNALC

16038. Thomas Robert Cech and Sidney Altman, 1989

RNA was the first genetic molecule.

  • ID: 16038
  • Source: DNAi

16471. Animation 21: RNA is an intermediary between DNA and protein.

Francis Crick describes RNA and its role and Paul Zamecnick explains protein synthesis.

  • ID: 16471
  • Source: DNALC.DNAFTB

2011. Vasopressin, oxytocin and bonding (2)

Doctor Thomas Insel continues his discussion of the two neuropeptides, vasopressin and oxytocin.

  • ID: 2011
  • Source: G2C