We have identified a new folding catalyst, PpiD, in the periplasm of Escherichia coli. The gene encoding PpiD was isolated as a multicopy suppressor of surA, a mutation which severely impairs the folding of outer membrane proteins (OMPs). The ppiD gene was also identified based on its ability to be transcribed by the two-component system CpxR-CpxA. PpiD was purified to homogeneity and shown to ...

For its sheer readability, the Qur’anic story of Joseph, told in S. 12, is perhaps unsurpassed in the whole of the Qur’in. The less than one hundred verses of the narrative1 telescope many years, present an amazing variety o f scenes and characters in a tightly-knit plot, and offer a dramatic illustration of some of the fundamental themes of the Qur’in. The present article, as the title indicat...

En este estudio se plantea la posible relación del sello LLS, presente en un pivote de ánfora layetana forma Dressel 2 hallado Caldes Malavella, con familia Lucius Licinius Sura, notable personaje consular siglo II d. C., y que proponemos aquí pueda corresponder a antepasado suyo relacionado producción vino layetano o tarraconense.

Acetolactate synthase (ALS) catalyzes the first common step in the biosynthesis of isoleucine, leucine, and valine. The previous cloning of two tobacco (Nicotiana tabacum) ALS genes (SurA and SurB) has allowed transcript accumulation from these genes to be monitored. mRNA blot analysis of ALS transcripts showed a message size of 2.2 kb. Quantitation of the levels of ALS messages in tobacco orga...

Acetolactate synthase (ALS) catalyzes the first common step in the biosynthesis of isoleucine, leucine, and valine. The previous cloning of two tobacco (Nicotiana tabacum) ALS genes (SurA and SurB) has allowed transcript accumulation from these genes to be monitored. mRNA blot analysis of ALS transcripts showed a message size of 2.2 kb. Quantitation of the levels of ALS messages in tobacco orga...

Intimin is a bacterial adhesin located on the surface of enteropathogenic Escherichia coli and other related bacteria that is believed to self-translocate across the outer membrane (OM), and therefore it has been regarded as a member of the type V secretion system (T5SS), which includes classical autotransporters (ATs). However, intimin has few structural similarities to classical ATs and an op...