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Updated: Aug 11, 2026

Genome-wide Analysis using ChIP to Identify Isoform-specific Gene Targets
Published on: July 8, 2010
Protein sequence analysis using Hewlett-Packard biphasic sequencing cartridges in an applied biosystems 473A protein
S Tang1, J Mozdzanowski, K R Anumula
1Bioanalytical Sciences, Research & Development, SmithKline Beecham Pharmaceuticals, King of Prussia, Pennsylvania 19406, USA.
Abstract:
Protein sequence analysis using an adsorptive biphasic sequencing cartridge, a set of two coupled columns introduced by Hewlett-Packard for protein sequencing by Edman degradation, in an Applied Biosystems 473A protein sequencer has been demonstrated. Samples containing salts, detergents, excipients, etc. (e.g., formulated protein drugs) can be easily analyzed using the ABI sequencer. Simple modifications to the ABI sequencer to accommodate the cartridge extend its utility in the analysis of difficult samples. The ABI sequencer solvents and reagents were compatible with the HP cartridge for sequencing. Sequence information up to ten residues can be easily generated by this nonoptimized procedure, and it is sufficient for identifying proteins by database search and for preparing a DNA probe for cloning novel proteins.
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