http://www.cnr.it/ontology/cnr/individuo/prodotto/ID45903
Bowman-Birk inhibitors in lentil: Heterologous expression, functional (Articolo in rivista)
- Type
- Label
- Bowman-Birk inhibitors in lentil: Heterologous expression, functional (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Alternative label
Caccialupi P, Ceci LR, Siciliano RA, Pignone D, Clemente A, Sonnante G. (2010)
Bowman-Birk inhibitors in lentil: Heterologous expression, functional
in Food chemistry
(literal)
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- Caccialupi P, Ceci LR, Siciliano RA, Pignone D, Clemente A, Sonnante G. (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Institute of Plant Genetics, CNR, Via Amendola, 165/A, 70126 Bari, Italy
Institute for Biomembranes and Bioenergetics, CNR, Via Amendola, 165/A, 70126 Bari, Italy
Institute of Food Science, CNR, Via Roma, 64, 83100 Avellino, Italy
Estación Experimental del Zaidín, CSIC, Profesor Albareda 1, 18008 Granada, Spain (literal)
- Titolo
- Bowman-Birk inhibitors in lentil: Heterologous expression, functional (literal)
- Abstract
- A full-length cDNA, encoding a Bowman-Birk protease inhibitor (BBI), was isolated from lentil immature
seeds. The deduced amino acid sequence was longer than that of the BBI extracted from lentil seeds and
contained two binding sites; the first inhibitory site inhibits trypsin whereas the second one inhibits chymotrypsin.
In order to characterize this lentil BBI, a longer (complete) and its C-terminally processed
(mature) form were heterologously expressed in the yeast Pichia pastoris. The recombinant BBI proteins
proved to be active against trypsin and chymotrypsin, showing Ki values at nanomolar levels. Mass spectrometry
analysis revealed that complete BBI was composed of an array of molecular masses, whereas
mature BBI showed the presence of a major peak of the expected size. The effects of mature BBI on the
growth of human colon adenocarcinoma HT29 and colonic fibroblast CCD-18Co cells were evaluated.
Lentil BBI was able to inhibit the growth of such cells at concentrations higher than 19 lM, in a concentration-
dependent manner; by contrast, the CCD18-Co cells were unaffected. These data broaden our
knowledge of the beneficial biological activities of naturally-occurring BBI proteins and address the need
for systematic evaluation of natural variants in order to design novel strategies in preventive medicine. (literal)
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