geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Extracellular proteins as enterobacterial thermometers


, : Extracellular proteins as enterobacterial thermometers. Science Progress 86(Pt 1-2): 139-155

Biological thermometers are cellular components or structures which sense increasing temperatures, interaction of the thermometer and the thermal stress bringing about the switching-on of inducible responses, with gradually enhanced levels of response induction following gradually increasing temperatures. In enterobacteria, for studies of such thermometers, generally induction of heat shock protein (HSP) synthesis has been examined, with experimental studies aiming to establish (often indirectly) how the temperature changes which initiate HSP synthesis are sensed; numerous other processes and responses show graded induction as temperature is increased, and how the temperature changes which induce these are sensed is also of interest. Several classes of intracellular component and structure have been proposed as enterobacterial thermometers, with the ribosome and the DnaK chaperone being the most favoured, although for many of the proposed intracellular thermometers, most of the evidence for their functioning in this way is indirect. In contrast to the above, the studies reviewed here firmly establish that for four distinct stress responses, which are switched-on gradually as temperature increases, temperature changes are sensed by extracellular components (extracellular sensing components, ESCs) i.e. there is firm and direct evidence for the occurrence of extracellular thermometers. All four thermometers described here are proteins, which appear to be distinct and different from each other, and on sensing thermal stress are activated by it to four distinct extracellular induction components (EICs), which interact with receptors on the surface of organisms to induce the appropriate responses. It is predicted that many other temperature-induced processes, including the synthesis of HSPs, will be switched-on following the activation of similar extracellular thermometers by thermal stimuli.

US$29.90

PMID: 12838608


Other references

Costen, M.L.; Marinakis, S.; McKendrick, K.G., 2008: Do vectors point the way to understanding energy transfer in molecular collisions?. This tutorial review examines the proposition that vector properties reveal more about the underlying potential energy surfaces controlling the inelastic exchange of energy in intermolecular collisions than conventional scalar measurements. Exciti...

Lecos, Chris, 1984: Making bulk foods safe foods. A current trend in food marketing is the sale of bulk food at the retail level. This help-yourself-to-as-much-as-you-want-to-buy food shopping may be "fun" and save money but it is not without safety problems. Generally, bulk food displa...

Berkaak, O.A., 1983: Re-settlement and dislocation of small farmers in Alcoa's mining areas in the Mocho Mountains of Jamaica. The article focuses on the impact of large scale bauxite-mining on a local small farming community in the Mocho Mountains of Jamaica. Special emphasis is placed on the cognitive processes involved in the company/community conflict caused by compul...

Gessain, A.; Escarmant, P.; Jouannelle, A.; Fagart, M.; Calender, A.; Azaloux, H., 1986: Malignant lymphoma, ORL localization, and the presence of anti-HTLV-I antibodies in Martinique. Revue de Laryngologie - Otologie - Rhinologie 107(2): 91-94

Yamanashi, K.; Shoji, T.; Tokuno, J.; Sumitomo, R.; Sonobe, M.; Date, H.; Huang, C-Long., 2015: Consensus of Verticality and Horizontality on the Monitor in Three-ports Video-Assisted Thoracic Surgery. Video-assisted thoracic surgery( VATS) has been utilized worldwide for treatment of thoracic disease in recent years. Then, in most VATS, the thoracoscope was handled by young surgeons consequently. In VATS, a role of the scopist is very important...

Torres, L.M.; Benito, Jé.I.; Morais, Dío.; Fernández, A., 2008: Nasopalatine duct cyst: case report. Nasopalatine are the most prevalent of non-odontogenic cysts in the oral cavity. Their origin, however, is still a source of controversy. We report the case of a patient with a mass in the anterior half of the hard palate following months of evolu...

Bohus, G., 1939: De Limacio arbustivo et var mesote-phro. Lirnacium arbustivum* and L. a. var. mesotephrum* (Hygrophorus mesotephrus Berkeley et Broome) are redescribed.

Estrem, T.; Broen, P.A., 1989: Early speech production of children with cleft palate. Word-initial target phonemes and the production of those phonemes were examined in normal children and children with cleft palate during the period when the children were acquiring their first 50 words. As a group, the children with cleft palate t...

Sambor V.A., 1990: Geological and geophysical study of salt diapir structure. Pages 94-103 1990

Oliveira, Aé.; Mendes-Bastos, P., 2017: Multiple annular plaques on a 9-year-old boy. Pediatric Dermatology 34(6): 713-714