Structural characterization of a biologically active human lipocortin 1 expressed in Escherichia coli

R. Arcone, G. Arpaia, M. Ruoppolo, A. Malorni, P. Pucci, G. Marino, A. Ialenti, M. Di Rosa, G. Ciliberto

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Lipocortin or annexin 1 is a calcium-dependent phospholipid-binding protein which probably acts as a glucocorticoid- regulated anti-inflammatory factor. cDNA for human lipocortin 1 was cloned in the pT7.7 expression plasmid under the control of the inducible bacteriophage T7 RNA polymerase promoter. Upon induction with isopropyl thio-β-D-galactoside, large amounts of the protein were produced and accumulated in Escherichia coli in a soluble form. The recombinant protein was purified to homogeneity by means of two subsequent ion-exchange chromatographic steps. The final yield was about 30 mg/l bacterial culture. Electrospray mass spectrometric analysis of the purified protein demonstrated that the recombinant product corresponds to the native human lipocortin 1, without the initial methionine and with a free N-terminal alanine; tryptic peptide mapping by fast-atom-bombardment mass spectrometry showed that the recombinant protein contains cysteine residues at positions 263 and 324 with free thiol groups, whereas Cys270 and Cys343 are probably involved in an intrachain disulfide bridge. Recombinant human lipocortin 1 reduces the carrageenin-induced paw oedema in rat in vivo and inhibits porcine pancreatic phospholipase A2 activity in vitro; in both cases, a dose-related response is observed.

Original languageEnglish
Pages (from-to)347-355
Number of pages9
JournalEuropean Journal of Biochemistry
Volume211
Issue number1-2
DOIs
Publication statusPublished - 1993

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Annexin A1
Recombinant Proteins
Escherichia coli
Annexins
Fast Atom Bombardment Mass Spectrometry
Galactosides
Peptide Mapping
Carrageenan
Ion Exchange
Phospholipases A2
Population Groups
Sulfhydryl Compounds
Disulfides
Alanine
Methionine
Glucocorticoids
Mass spectrometry
Cysteine
Rats
Edema

ASJC Scopus subject areas

  • Biochemistry

Cite this

Structural characterization of a biologically active human lipocortin 1 expressed in Escherichia coli. / Arcone, R.; Arpaia, G.; Ruoppolo, M.; Malorni, A.; Pucci, P.; Marino, G.; Ialenti, A.; Di Rosa, M.; Ciliberto, G.

In: European Journal of Biochemistry, Vol. 211, No. 1-2, 1993, p. 347-355.

Research output: Contribution to journalArticle

Arcone, R, Arpaia, G, Ruoppolo, M, Malorni, A, Pucci, P, Marino, G, Ialenti, A, Di Rosa, M & Ciliberto, G 1993, 'Structural characterization of a biologically active human lipocortin 1 expressed in Escherichia coli', European Journal of Biochemistry, vol. 211, no. 1-2, pp. 347-355. https://doi.org/10.1111/j.1432-1033.1993.tb19904.x
Arcone, R. ; Arpaia, G. ; Ruoppolo, M. ; Malorni, A. ; Pucci, P. ; Marino, G. ; Ialenti, A. ; Di Rosa, M. ; Ciliberto, G. / Structural characterization of a biologically active human lipocortin 1 expressed in Escherichia coli. In: European Journal of Biochemistry. 1993 ; Vol. 211, No. 1-2. pp. 347-355.
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