@article {Nakamura:1993:0950-382X:225, title = "Control and function of lysyltRNA synthetases: diversity and coordination", journal = "Molecular Microbiology", parent_itemid = "infobike://bsc/mole", publishercode ="bp", year = "1993", volume = "10", number = "2", publication date ="1993-10-01T00:00:00", pages = "225-231", itemtype = "ARTICLE", issn = "0950-382X", eissn = "1365-2958", url = "https://www.ingentaconnect.com/content/bsc/mole/1993/00000010/00000002/art00002", doi = "doi:10.1111/j.1365-2958.1993.tb01948.x", author = "Nakamura, Yoshikazu and Ito, Koichi", abstract = "Summary LysyltRNA synthetases are synthesized from two distinct genes in Escherichia coli, lysS (constitutively) and lysU (inducibly); however, the physiological significance and the differential control mechanism of these two genes have been a longstanding puzzle. Recent studies have successfully uncovered a significant control mechanism of lysU expression, which involves the leucineresponsive regulatory protein (Lrp) and a translational enhancer element calleddownstream box'. Moreover, it is likely that there is a mechanism underlying coordinate expression of lysU with other genes outside the leucineLrp regulon under harsh conditions such as low pH and anaerobiosis. A possible mechanism of lysyltRNA synthetase expression and function is reviewed.", }