CHARACTERIZATION OF SMALL HEAT-SHOCK PROT EINS IN LACTIC-ACID BACTERIA

Citation
Mp. Jobin et al., CHARACTERIZATION OF SMALL HEAT-SHOCK PROT EINS IN LACTIC-ACID BACTERIA, Le Lait, 78(1), 1998, pp. 165-171
Citations number
27
Categorie Soggetti
Food Science & Tenology
Journal title
ISSN journal
00237302
Volume
78
Issue
1
Year of publication
1998
Pages
165 - 171
Database
ISI
SICI code
0023-7302(1998)78:1<165:COSHPE>2.0.ZU;2-G
Abstract
Among heat shock proteins (Hsp), low molecular weight Hsp (smHsp) an t he less known. Four smHsp were recently studied in lactic acid bacteri a (Steptococcus thermophilus, Lactobacillus delbrueckii, Lactobacillus helveticus et Oenococcus oeni). These smHsp are related to Eukaryotic alpha-crystallins able to form high molecular weight complexes with a chaperoning activity. Induction factors of smHsp vary with the lactic acid bacterium. The expression of L. helveticus and O. oeni smHsp gen es are governed by different promoter structures. In L. helveticus, th e regulation system is Like Lactococcus lactis stress genes already kn own with a vegetative promoter and a CIRCE sequence. In O. oeni, the r egulation seems to be closely related to the class III stress genes, t he less known mechanism of regulation in Bacillus subtilis. (C) Inra/E lsevier, Paris.