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Conserved aspartic acids are essential for the enzymic activity of the WecA protein initiating the biosynthesis of O-specific lipopolysaccharide and enterobacterial common antigen in Escherichia coli.
Amer AO, Valvano MA. Amer AO, et al. Microbiology (Reading). 2002 Feb;148(Pt 2):571-582. doi: 10.1099/00221287-148-2-571. Microbiology (Reading). 2002. PMID: 11832520
Outer membrane protein profiles and multilocus enzyme electrophoresis analysis for differentiation of clinical isolates of Proteus mirabilis and Proteus vulgaris.
Kappos T, John MA, Hussain Z, Valvano MA. Kappos T, et al. J Clin Microbiol. 1992 Oct;30(10):2632-7. doi: 10.1128/JCM.30.10.2632-2637.1992. J Clin Microbiol. 1992. PMID: 1400963 Free PMC article.
Relatedness of O-specific lipopolysaccharide side chain genes from strains of Shigella boydii type 12 belonging to two clonal groups and from Escherichia coli O7:K1.
Valvano MA, Marolda CL. Valvano MA, et al. Infect Immun. 1991 Nov;59(11):3917-23. doi: 10.1128/IAI.59.11.3917-3923.1991. Infect Immun. 1991. PMID: 1718868 Free PMC article.
Genetic analysis of the O7-polysaccharide biosynthesis region from the Escherichia coli O7:K1 strain VW187.
Marolda CL, Welsh J, Dafoe L, Valvano MA. Marolda CL, et al. J Bacteriol. 1990 Jul;172(7):3590-9. doi: 10.1128/jb.172.7.3590-3599.1990. J Bacteriol. 1990. PMID: 2163382 Free PMC article.
Valvano, and J. H. Crosa, Infect. Immun. 57:937-943, 1989). To characterize the O7-LPS region, the recombinant cosmids pJHCV31 and pJHCV32 were mutagenized by transposon mutagenesis with Tn3HoHo1, which carries a promoterless lac operon and can therefore generate lacZ tran
Valvano, and J. H. Crosa, Infect. Immun. 57:937-943, 1989). To characterize the O7-LPS region, the recombinant cosmids pJHCV31 and pJ
Molecular cloning and expression in Escherichia coli K-12 of chromosomal genes determining the O7 lipopolysaccharide antigen of a human invasive strain of E. coli O7:K1.
Valvano MA, Crosa JH. Valvano MA, et al. Infect Immun. 1989 Mar;57(3):937-43. doi: 10.1128/IAI.57.3.937-943.1989. Infect Immun. 1989. PMID: 2645215 Free PMC article.
Flanking and internal regions of chromosomal genes mediating aerobactin iron uptake systems in enteroinvasive Escherichia coli and Shigella flexneri.
Marolda CL, Valvano MA, Lawlor KM, Payne SM, Crosa JH. Marolda CL, et al. J Gen Microbiol. 1987 Aug;133(8):2269-78. doi: 10.1099/00221287-133-8-2269. J Gen Microbiol. 1987. PMID: 2832521
Genetic analysis of the O-specific lipopolysaccharide biosynthesis region (rfb) of Escherichia coli K-12 W3110: identification of genes that confer group 6 specificity to Shigella flexneri serotypes Y and 4a.
Yao Z, Valvano MA. Yao Z, et al. J Bacteriol. 1994 Jul;176(13):4133-43. doi: 10.1128/jb.176.13.4133-4143.1994. J Bacteriol. 1994. PMID: 7517390 Free PMC article.
Valvano, J. Bacteriol. 174:7500-7508, 1992). In this study, we identified the genetic region encoding group 6 specificity as part of the rfb gene cluster of E. coli K-12 strain W3110 and established the DNA sequence of most of this cluster. ...
Valvano, J. Bacteriol. 174:7500-7508, 1992). In this study, we identified the genetic region encoding group 6 specificity as part of
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