1997
DOI: 10.1128/jb.179.2.487-495.1997
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Cloning and characterization of two groESL operons of Rhodobacter sphaeroides: transcriptional regulation of the heat-induced groESL operon

Abstract: The nonsulfur purple bacterium Rhodobacter sphaeroides was found to contain two groESL operons. The groESL 1 heat shock operon was cloned from a genomic library, and a 2.8-kb DNA fragment was sequenced and found to contain the groES and groEL genes. The deduced amino acid sequences of GroEL 1 (cpn60) and GroES 1 (cpn10) were in agreement with N-terminal sequences previously obtained for the isolated proteins (K. C. Terlesky and F. R. Tabita, Biochemistry 30:8181-8186, 1991). These sequences show a high degree … Show more

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Cited by 29 publications
(23 citation statements)
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“…In some species, several groE operons have been found [e.g. Rhodobacter sphaeroides (Lee et al, 1997); Bradyrhizobium japonicum (Babst et al, 1996)]. In E. coli, the groE operon belongs to the main heat-shock regulon, regulated by the s 32 factor (Yura et al, 1993).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…In some species, several groE operons have been found [e.g. Rhodobacter sphaeroides (Lee et al, 1997); Bradyrhizobium japonicum (Babst et al, 1996)]. In E. coli, the groE operon belongs to the main heat-shock regulon, regulated by the s 32 factor (Yura et al, 1993).…”
Section: Introductionmentioning
confidence: 99%
“…A comparison of the proteobacterial groE operons characterized so far allows us to conclude that in the c subdivision of proteobacteria, transcriptional regulation is based on the presence of two, s 32 and s 70 -dependent, promoters, while in other subdivisions the strategies are more diverse: either one of these two promoters is found [Cowdria ruminantium -s 70 (Lally et al, 1995), B. japonicum -s 32 (Babst et al, 1996)], or there is a combination of two promoters plus a CIRCE regulatory element [R. sphaeroides (Lee et al, 1997)], or one of the promoters is accompanied by CIRCE [Agrobacterium tumefaciens (Segal & Ron, 1996a)]. …”
mentioning
confidence: 99%
“…It is known that, in all cases tested where multiple genes are present, the presence of at least 1 groEL gene is essential (eg, Servant et al 1993;Lee at al 1997;Rodríguez-Quiñ ones et al 2005). It is also known that expression levels of groE operons in the same organism can vary widely (Fischer et al 1993;Lehel et al 1993;Glatz et al 1997;Lee et al 1997;Karunakaran et al 2003;Rodríguez-Quiñ ones et al 2005). Multiple groEL genes in some organisms are quite closely related, whereas in others they are diverged significantly, suggesting that they may have different functions (Hughes 1993;Karlin and Brocchieri 2000).…”
Section: Introductionmentioning
confidence: 99%
“…This situation has been reported for most eubacteria, although there are some exceptions, i.e., Mycobacteria (25), the cyanobacterium Synechocystis sp. (2), Bradyrhizobium japonicum (7), Legionella pneumophila (16), Rhodobacter sphaeroides (15). V. cholerae is a pathogen causing severe diarrheal diseases and its infection sources are surface water of natural environments such as brackish water, rivers, ponds or wells.…”
Section: Discussionmentioning
confidence: 99%