[Voyage en Italie : 1824-1830]. , [Chapiteaux de la basilique] : [trois motifs] : [dessin] / [Henri Labrouste]

Référence bibliographique : Weigert, 422

[Voyage en Italie : 1824-1830]. , Pots à Eau modernes à Vico près Sorento ; Pots antiques à Pompeia : [huit motifs] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 462

[Voyage en Italie : 1824-1830]. , Enseignes de boutiques en terre cuite, d'après M. Mazois : [trois motifs] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 459

[Voyage en Italie : 1824-1830]. , Frise de l'arc de Titus à Rome : [trois motifs : figures ailées des écoinçons et détail de la frise] : [dessin] / [Henri Labrouste]

Référence bibliographique : Weigert, 496

[Voyage en Italie : 1824-1830]. , [Détails ornementaux de la colonne Trajane] : [six motifs d'architecture] : [dessin] / [Henri Labrouste]

Référence bibliographique : Weigert, 505

[Voyage en Italie : 1824-1830]. , [Divers objets, dont un] Autel en travertin au Capitole [et] au Vatican : [cinq motifs] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 562

[Voyage en Italie : 1824-1830]. , Fragmens de la Mosaïque de Palestrina [au palais Barberini] : [six motifs] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 568

[Voyage en Italie : 1824-1830]. , [Portique et bas-reliefs] à la Villa Albani : [trois motifs] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 623

Structural motifs of biomolecules.

Biomolecular structures are assemblies of emergent anisotropic building modules such as uniaxial helices or biaxial strands. We provide an approach to understanding a marginally compact phase of matter that is occupied by proteins and DNA. This phase, which is in some respects analogous to the liquid crystal phase for chain molecules, stabilizes a range of shapes that can be obtained by sequence-independent interactions occurring intra- and intermolecularly between polymeric molecules. We present a singularity-free self-interaction for a tube in the continuum limit and show that this results in the tube being positioned in the marginally compact phase. Our work provides a unified framework for understanding the building blocks of biomolecules.

Positional bias of general and tissue-specific regulatory motifs in mouse gene promoters

Background: The arrangement of regulatory motifs in gene promoters, or promoterarchitecture, is the result of mutation and selection processes that have operated over manymillions of years. In mammals, tissue-specific transcriptional regulation is related to the presence ofspecific protein-interacting DNA motifs in gene promoters. However, little is known about therelative location and spacing of these motifs. To fill this gap, we have performed a systematic searchfor motifs that show significant bias at specific promoter locations in a large collection ofhousekeeping and tissue-specific genes.Results: We observe that promoters driving housekeeping gene expression are enriched inparticular motifs with strong positional bias, such as YY1, which are of little relevance in promotersdriving tissue-specific expression. We also identify a large number of motifs that show positionalbias in genes expressed in a highly tissue-specific manner. They include well-known tissue-specificmotifs, such as HNF1 and HNF4 motifs in liver, kidney and small intestine, or RFX motifs in testis,as well as many potentially novel regulatory motifs. Based on this analysis, we provide predictionsfor 559 tissue-specific motifs in mouse gene promoters.Conclusion: The study shows that motif positional bias is an important feature of mammalianproximal promoters and that it affects both general and tissue-specific motifs. Motif positionalconstraints define very distinct promoter architectures depending on breadth of expression andtype of tissue.

Motifs et considérations sur le refus du serment exigé de tous les fonctionnaires publics : par un homme de loi, nommé à une fonction publique ([Reprod.])

Collection : Les archives de la Révolution française ; 8.606

Mon apologie d'après le serment civique dans le vrai sens de la Constitution & revétu de tous les motifs réunis pour en justifier la prestation ([Reprod.]) / [François]

Collection : Les archives de la Révolution française ; 8.599

Evolution of the ferric reductase domain (FRD) superfamily: modularity, functional diversification, and signature motifs.

A heme-containing transmembrane ferric reductase domain (FRD) is found in bacterial and eukaryotic protein families, including ferric reductases (FRE), and NADPH oxidases (NOX). The aim of this study was to understand the phylogeny of the FRD superfamily. Bacteria contain FRD proteins consisting only of the ferric reductase domain, such as YedZ and short bFRE proteins. Full length FRE and NOX enzymes are mostly found in eukaryotic cells and all possess a dehydrogenase domain, allowing them to catalyze electron transfer from cytosolic NADPH to extracellular metal ions (FRE) or oxygen (NOX). Metazoa possess YedZ-related STEAP proteins, possibly derived from bacteria through horizontal gene transfer. Phylogenetic analyses suggests that FRE enzymes appeared early in evolution, followed by a transition towards EF-hand containing NOX enzymes (NOX5- and DUOX-like). An ancestral gene of the NOX(1-4) family probably lost the EF-hands and new regulatory mechanisms of increasing complexity evolved in this clade. Two signature motifs were identified: NOX enzymes are distinguished from FRE enzymes through a four amino acid motif spanning from transmembrane domain 3 (TM3) to TM4, and YedZ/STEAP proteins are identified by the replacement of the first canonical heme-spanning histidine by a highly conserved arginine. The FRD superfamily most likely originated in bacteria.

Discours de M. Surget, curé de St-Martin à ses paroissiens, dans lequel il expose les motifs qui l'ont déterminé à prêter son serment ([Reprod.])

Collection : Les archives de la Révolution française ; 8.484