Biomaterial Database

Separation of recombinant human growth hormone from Escherichia coli cell pellet extract by capillary zone electrophoresis. 1996

T M McNerney, and S K Watson, and J H Sim, and R L Bridenbaugh

Department of Manufacturing Science, Genentech, Inc., South San Francisco, CA 94080, USA.

Free zone capillary electrophoresis (FZCE) was used to resolve recombinant human growth hormone (rhGH) and its variants from very crude mixtures of Escherichia coli (E. coli) cell paste extract. The methodology employs a phosphate deactivated fused-silica capillary and a 250 mM phosphate (pH 6.8), 1% (v/v) propylene glycol buffer with a high field strength of 600 V/cm. Resolution of rhGH and its variants from very crude mixtures did not change after 80 injections for the PSC capillaries. Bare silica and PVA coated capillaries had a more limited lifetime when injected with the same crude mixtures (10 to 30 injections). This FZC method provides a very powerful tool for assessing rhGH modification during the fermentation and isolation of rhGH that is not possible with other current analytical techniques.

UI	MeSH Term	Description	Entries
D010710	Phosphates	Inorganic salts of phosphoric acid.	Inorganic Phosphate,Phosphates, Inorganic,Inorganic Phosphates,Orthophosphate,Phosphate,Phosphate, Inorganic
D011994	Recombinant Proteins	Proteins prepared by recombinant DNA technology.	Biosynthetic Protein,Biosynthetic Proteins,DNA Recombinant Proteins,Recombinant Protein,Proteins, Biosynthetic,Proteins, Recombinant DNA,DNA Proteins, Recombinant,Protein, Biosynthetic,Protein, Recombinant,Proteins, DNA Recombinant,Proteins, Recombinant,Recombinant DNA Proteins,Recombinant Proteins, DNA
D002457	Cell Extracts	Preparations of cell constituents or subcellular materials, isolates, or substances.	Cell Extract,Extract, Cell,Extracts, Cell
D002847	Chromatography, Agarose	A method of gel filtration chromatography using agarose, the non-ionic component of agar, for the separation of compounds with molecular weights up to several million.	Chromatography, Sepharose,Agarose Chromatography,Sepharose Chromatography,Agarose Chromatographies,Chromatographies, Agarose,Chromatographies, Sepharose,Sepharose Chromatographies
D004926	Escherichia coli	A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.	Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli
D005285	Fermentation	Anaerobic degradation of GLUCOSE or other organic nutrients to gain energy in the form of ATP. End products vary depending on organisms, substrates, and enzymatic pathways. Common fermentation products include ETHANOL and LACTIC ACID.	Fermentations
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012822	Silicon Dioxide	Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.	Silica,Aerosil,Aerosil 380,Cristobalite,Quso G-32,Quso G32,Tridymite,380, Aerosil,Dioxide, Silicon,G32, Quso,Quso G 32
D019075	Electrophoresis, Capillary	A highly-sensitive (in the picomolar range, which is 10,000-fold more sensitive than conventional electrophoresis) and efficient technique that allows separation of PROTEINS; NUCLEIC ACIDS; and CARBOHYDRATES. (Segen, Dictionary of Modern Medicine, 1992)	Capillary Zone Electrophoresis,Capillary Electrophoreses,Capillary Electrophoresis,Capillary Zone Electrophoreses,Electrophoreses, Capillary,Electrophoreses, Capillary Zone,Electrophoresis, Capillary Zone,Zone Electrophoreses, Capillary,Zone Electrophoresis, Capillary
D019382	Human Growth Hormone	A 191-amino acid polypeptide hormone secreted by the human adenohypophysis (PITUITARY GLAND, ANTERIOR), also known as GH or somatotropin. Synthetic growth hormone, termed somatropin, has replaced the natural form in therapeutic usage such as treatment of dwarfism in children with growth hormone deficiency.	Somatotropin (Human),Somatropin (Human),Cryo-Tropin,Genotonorm,Genotropin,Humatrope,Maxomat,Norditropin,Norditropin Simplexx,Norditropine,Nutropin,Omnitrope,Recombinant Human Growth Hormone (Mammalian),Saizen,Serostim,Somatropin,Umatrope,Zomacton,hGH (Human Growth Hormone),r-hGH(m),r-hGH-M,Cryo Tropin,CryoTropin,Growth Hormone, Human