Abstract

A new miniaturized protein and peptide sequenator has been constructed which uses gas phase reagents at the coupling and cleavage steps of the Edman degradation. The sample is embedded in a matrix of Polybrene dried onto a porous glass fiber disc located in a small cartridge-style reaction cell. The protein or peptide, though not covalently attached to the support, is essentially immobile throughout the degradative cycle, since only relatively apolar, liquid phase solvents pass through the cell. This instrument can give useful sequence data on as little as 5 pmol or protein, can perform extended sequence runs (greater than 30 residues) on subnanomole quantities of proteins purified by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and can sequence hydrophobic peptides to completion. The sequenator is characterized by a high repetitive yield during the degradation, low reagent consumption, low maintenance requirements, and a degradative cycle time of only 50 min using a complete double cleavage program.

Keywords

Edman degradationPeptideChromatographyChemistryReagentCleavage (geology)Sodium dodecyl sulfateYield (engineering)Covalent bondPeptide sequenceBiochemistryOrganic chemistryBiologyMaterials science

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Publication Info

Year
1981
Type
article
Volume
256
Issue
15
Pages
7990-7997
Citations
2228
Access
Closed

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Cite This

Rodney M. Hewick, Michael W. Hunkapiller, Leroy Hood et al. (1981). A gas-liquid solid phase peptide and protein sequenator.. Journal of Biological Chemistry , 256 (15) , 7990-7997. https://doi.org/10.1016/s0021-9258(18)43377-7

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DOI
10.1016/s0021-9258(18)43377-7