Quantifying biosynthetic human growth hormone in Escherichia coli with capillary electrophoresis under hydrophobic conditions

A method has been developed which is able to quantitate the content of precursor biosynthetic human growth hormone (Pre-bhGH) in the cytosol of E. coli cells containing the gene for human growth hormone (hGH). The method uses hydrophobic C 18 coated capillaries with native biosynthetic human growth...

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Veröffentlicht in:Journal of Chromatography A 1998-08, Vol.817 (1), p.205-214
Hauptverfasser: Jørgensen, Thomas K, Bagger, Leif H, Christiansen, Jesper, Johnsen, Gitte H, Faarbæk, Jan R, Jørgensen, Linda, Welinder, Benny S
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container_end_page 214
container_issue 1
container_start_page 205
container_title Journal of Chromatography A
container_volume 817
creator Jørgensen, Thomas K
Bagger, Leif H
Christiansen, Jesper
Johnsen, Gitte H
Faarbæk, Jan R
Jørgensen, Linda
Welinder, Benny S
description A method has been developed which is able to quantitate the content of precursor biosynthetic human growth hormone (Pre-bhGH) in the cytosol of E. coli cells containing the gene for human growth hormone (hGH). The method uses hydrophobic C 18 coated capillaries with native biosynthetic human growth hormone (bhGH) as an internal standard. This allows for highly robust and precise determinations as well as the evaluation of the presence of deamidated forms in the cytosol samples. Furthermore, by modifying the running buffer with zwitterionic surfactants and an organic modifier, it is possible to detect a related form with a three sulfur atom Cys–Cys bridge (trisulfide Pre-bhGH). Thus, a strong tool for monitoring the effect of fermentation conditions on the biosynthesis of bhGH is obtained.
doi_str_mv 10.1016/S0021-9673(98)00424-5
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subjects Amino Acid Sequence
Biological and medical sciences
Biotechnology
Electrophoresis, Capillary - methods
Escherichia coli - chemistry
Fundamental and applied biological sciences. Psychology
Growth hormones
Health. Pharmaceutical industry
Hormones. Growth factors
Human Growth Hormone - analysis
Humans
Industrial applications and implications. Economical aspects
Molecular Sequence Data
Production of active biomolecules
Protein Precursors - analysis
Recombinant Proteins - analysis
Reference Standards
Reproducibility of Results
title Quantifying biosynthetic human growth hormone in Escherichia coli with capillary electrophoresis under hydrophobic conditions
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