Peptide and protein molecular weight determination by electrophoresis using a high-molarity tris buffer system without urea

Steven P. Fling; Dale S Gregerson

doi:10.1016/0003-2697(86)90228-9

Peptide and protein molecular weight determination by electrophoresis using a high-molarity tris buffer system without urea

Steven P. Fling, Dale S Gregerson

Ophthalmology & Visual Neurosciences

Research output: Contribution to journal › Article › peer-review

839 Scopus citations

Abstract

Various buffer systems were examined for their ability to resolve and provide molecular weight determinations of proteins and peptides over a wide size range using electrophoresis in sodium dodecyl sulfate-polyacrylamide gels. Sharp bands and high resolution were achieved in the 1300 to 100,000 molecular weight range using a modified Laemmli discontinuous buffer system with high concentrations of Tris in the resolving gel (0.75 m) and in the running buffer (0.05 m). Linear gradient gels (8 to 25% acrylamide) were tested with and without varying concentrations of urea and/or glycerol and/or sucrose. At this high molarity of Tris, the inclusion of urea, glycerol, or sucrose proved unnecessary for successful peptide electrophoresis. Gels run without these reagents showed superior resolution throughout the entire molecular weight range when run with Tris at 0.75 and 0.05 m, respectively, obviating the need for urea or other additives as used in other systems. A single gel is thus able to resolve an entire range from large proteins to small peptides.

Original language	English (US)
Pages (from-to)	83-88
Number of pages	6
Journal	Analytical Biochemistry
Volume	155
Issue number	1
DOIs	https://doi.org/10.1016/0003-2697(86)90228-9
State	Published - May 15 1986

Bibliographical note

Funding Information:
’ This work was supported by National Institutes of Health Grant ROl-EY-05417 (D.S.G.), by a Research to Prevent Blindness James S. Adams Scholar Award (D.S.G.), and by unrestricted funds from Research to Prevent Blindness. 2 To whom correspondence should be addressed: Department of Ophthalmology, University of Minnesota, Box 493 Mayo Memorial Building, 516 Delaware St., S.E., Minneapolis, Minn. 55455. 3 Abbreviations used: SDS, sodium dodecyl sulfate; PAGE, polyacrylamide gel electrophoresis; TEMED, N,N,N’,N’-tetramethylethylenediamine; Bis, N,N’-methylenebisacrylamide; CB25, CB76, etc., cyanogen bromide peptides of S-antigen.

Keywords

SDS-polyacrylamide
electrophoresis
molecular weight
peptides

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title = "Peptide and protein molecular weight determination by electrophoresis using a high-molarity tris buffer system without urea",

abstract = "Various buffer systems were examined for their ability to resolve and provide molecular weight determinations of proteins and peptides over a wide size range using electrophoresis in sodium dodecyl sulfate-polyacrylamide gels. Sharp bands and high resolution were achieved in the 1300 to 100,000 molecular weight range using a modified Laemmli discontinuous buffer system with high concentrations of Tris in the resolving gel (0.75 m) and in the running buffer (0.05 m). Linear gradient gels (8 to 25% acrylamide) were tested with and without varying concentrations of urea and/or glycerol and/or sucrose. At this high molarity of Tris, the inclusion of urea, glycerol, or sucrose proved unnecessary for successful peptide electrophoresis. Gels run without these reagents showed superior resolution throughout the entire molecular weight range when run with Tris at 0.75 and 0.05 m, respectively, obviating the need for urea or other additives as used in other systems. A single gel is thus able to resolve an entire range from large proteins to small peptides.",

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note = "Funding Information: {\textquoteright} This work was supported by National Institutes of Health Grant ROl-EY-05417 (D.S.G.), by a Research to Prevent Blindness James S. Adams Scholar Award (D.S.G.), and by unrestricted funds from Research to Prevent Blindness. 2 To whom correspondence should be addressed: Department of Ophthalmology, University of Minnesota, Box 493 Mayo Memorial Building, 516 Delaware St., S.E., Minneapolis, Minn. 55455. 3 Abbreviations used: SDS, sodium dodecyl sulfate; PAGE, polyacrylamide gel electrophoresis; TEMED, N,N,N{\textquoteright},N{\textquoteright}-tetramethylethylenediamine; Bis, N,N{\textquoteright}-methylenebisacrylamide; CB25, CB76, etc., cyanogen bromide peptides of S-antigen.",

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N2 - Various buffer systems were examined for their ability to resolve and provide molecular weight determinations of proteins and peptides over a wide size range using electrophoresis in sodium dodecyl sulfate-polyacrylamide gels. Sharp bands and high resolution were achieved in the 1300 to 100,000 molecular weight range using a modified Laemmli discontinuous buffer system with high concentrations of Tris in the resolving gel (0.75 m) and in the running buffer (0.05 m). Linear gradient gels (8 to 25% acrylamide) were tested with and without varying concentrations of urea and/or glycerol and/or sucrose. At this high molarity of Tris, the inclusion of urea, glycerol, or sucrose proved unnecessary for successful peptide electrophoresis. Gels run without these reagents showed superior resolution throughout the entire molecular weight range when run with Tris at 0.75 and 0.05 m, respectively, obviating the need for urea or other additives as used in other systems. A single gel is thus able to resolve an entire range from large proteins to small peptides.

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Peptide and protein molecular weight determination by electrophoresis using a high-molarity tris buffer system without urea

Abstract

Bibliographical note

Keywords

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