title: Monitoring cleavage of fusion proteins by matrix-assisted laser desorption ionization/mass spectrometry: recombinant HIV-1IIIB p26.
abstract: Matrix-associated laser desorption ionization/mass spectrometry (MALDI/MS) has been used to examine whole bacteria for the presence of a recombinant HIV p26 fusion protein. MALDI/MS, combined with affinity-purification techniques, is also shown to be very useful in monitoring the enzymatic cleavage of both affinity-bound fusion protein and fusion protein in solution. The combination of mass resolution, sensitivity, and speed of analysis makes MALDI/MS an attractive alternative to SDS-PAGE.
authors.affiliation: Laboratory of Molecular Biophysics, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, 27709, USA.
authors.forename: C E
authors.initials: CE
authors.lastname: Parker
authors.forename: D I
authors.initials: DI
authors.lastname: Papac
authors.forename: K B
authors.initials: KB
authors.lastname: Tomer
mesh_terms: D002846:Chromatography, Affinity; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli; D015951:Factor Xa / Q000378:metabolism; D015683:Gene Products, gag / Q000235:genetics / Q000378:metabolism*; D005982:Glutathione Transferase / Q000235:genetics / Q000378:metabolism; D015488:HIV Antigens / Q000235:genetics / Q000378:metabolism*; D016655:HIV Core Protein p24 / Q000235:genetics / Q000378:metabolism; D016333:HIV Protease / Q000378:metabolism; D015497:HIV-1 / Q000235:genetics / Q000378:metabolism*; D011993:Recombinant Fusion Proteins / Q000378:metabolism; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D014764:Viral Proteins; D054301:gag Gene Products, Human Immunodeficiency Virus
chemical_list: D015683:Gene Products, gag; D015488:HIV Antigens; D016655:HIV Core Protein p24; D011993:Recombinant Fusion Proteins; D014764:Viral Proteins; D054301:gag Gene Products, Human Immunodeficiency Virus; C065558:gag protein p26, Human immunodeficiency virus; C054858:p17 protein, Human Immunodeficiency Virus Type 1; D005982:Glutathione Transferase; D015951:Factor Xa; D016333:HIV Protease