PepR1 from Lactobacillus delbrueckii subsp bulgaricus (Lb. bulgaricus) is involved in biosynthesis regulation of the prolidase PepQ. In this paper, we demonstrated that Lb. bulgaricus PepR1 biosynthesis is not constitutive like those of several bacteria but is auto-regulated and depends on the glucose concentration of the culture medium. We propose a model for PepQ regulation by PepR1.

During growth of Pseudomonas in nutritionally rich environment many catabolicoperons are repressed by physiological control mechanisms. In the current reportwe have studied mechanisms that down-regulate transcription from the CatR-controlled promoter of phenol degradation genes pheBA in P. putida whenbacteria are growing in the presence of amino acids. We found that the amount o...

Human mast cells (MC) were derived from umbilical cord blood and bone marrow progenitors cultured in the presence of a conditioned medium from a human mastocytosis cell strain and recombinant human kit ligand (rhKL). KL induced MC of predominantly two immunophenotypes, MCT and MCTC. In contrast, the conditioned medium induced MC subtypes MCTC and a third subtype, MCC, positive for chymase but n...

Laser driven particle acceleration and measurements ofion energy loss in plasma largely rely on suitable targets toachieve good particle beam and plasma quality. Recent re-search results [2] indicate that cryogenic targets allow forvery high ion energies. Advantages of our cryogenic tar-gets include high purity at solid density in a self-supportedstructure as well as fit...

The direct sequencing of PCR products, a bacterial colony (plasmid DNA), or phage plaque (λDNA) is a very powerful technique applicable to several molecular biological experiments. In particular, the sequencing of plasmid DNA directly from within bacterial colonies provides a rapid screening method to confirm the orientation of DNA inserts. Similarly, the direct sequencing of λDNA within plaque...

Water kefir is a mildly sour and alcoholic drink fermented by a stable microbial multispecies community. With its high sugar content and low amino acid concentration water kefir medium represents a demanding habitat. In this ecological niche only well adapted microorganisms which are fit to the consortium are able to grow and mutually provide essential nutrients. The synergism between main repr...

After our work was published, we found that some of the terms in the equations were incorrect and that there were some typographical errors in the abbreviations. In the section 'Single adjusting compartment' in Materials and Methods, VS should be VSAC. In the last paragraph of Results, QSAC should be QSAC. The correct equations are included in this article. These corrections will not affect the...

This thesis aims to improve the ontology engineering process, by providingbetter semi-automatic support for constructing ontologies and introducingknowledge reuse through ontology patterns. The thesis introduces a ty-pology of patterns, a general framework of pattern-based semi-automaticontology construction called OntoCase, and provides a set of methods tosolve some specifi...

Correction to Escalada F, Marco E, Duarte E, Muniesa JM, Boza R, Tejero M, Cáceres E. Assessment of angle velocity in girls with adolescent idiopathic scoliosis. Scoliosis 2009; 4:20. Correction After publication of this work [1], we noted that we inadvertently failed to include the complete list of all coauthors. The full list of authors has now been added and the Authors' contributions and Co...