Academic literature on the topic 'Découverte de motifs ADN'
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Journal articles on the topic "Découverte de motifs ADN"
Gesbert, Cédric, Cécile Torregrosa, and Marie-France Mamzer. "De l’incidentalome à la découverte secondaire." médecine/sciences 36, no. 11 (November 2020): 1054–58. http://dx.doi.org/10.1051/medsci/2020188.
Full textHAYES, H. "ADN et chromosomes." INRAE Productions Animales 13, HS (December 22, 2000): 13–20. http://dx.doi.org/10.20870/productions-animales.2000.13.hs.3806.
Full textHennequin, Daniel. "Le Palais de la découverte : un avenir incertain." Reflets de la physique, no. 67 (November 2020): 31–37. http://dx.doi.org/10.1051/refdp/202067031.
Full textPan, Junhua, Vikram N. Vakharia, and Yizhi Jane Tao. "The structure of a birnavirus polymerase reveals a distinct active site topology." Proceedings of the National Academy of Sciences 104, no. 18 (April 24, 2007): 7385–90. http://dx.doi.org/10.1073/pnas.0611599104.
Full textMehl, Dominique. "La famille élective." Dialogue 242, no. 4 (January 15, 2024): 25–41. http://dx.doi.org/10.3917/dia.242.0025.
Full textBéchet, Nicolas, Peggy Cellier, Thierry Charnois, and Bruno Crémilleux. "Fouille de motifs séquentiels pour la découverte de relations entre gènes et maladies rares." Revue d'intelligence artificielle 28, no. 2-3 (June 30, 2014): 245–70. http://dx.doi.org/10.3166/ria.28.245-270.
Full textClaverie, Jean-Michel, Chantal Abergel, and Matthieu Legendre. "Des virus géants créateurs de leurs propres gènes ?" médecine/sciences 34, no. 12 (December 2018): 1087–91. http://dx.doi.org/10.1051/medsci/2018300.
Full textRioult, François. "Découverte de motifs fréquents dans les bases de données. Un cadre formel pour les méthodes." Ingénierie des systèmes d'information 9, no. 3-4 (August 24, 2004): 211–40. http://dx.doi.org/10.3166/isi.9.3-4.211-240.
Full textBOICHARD, D., C. GROHS, P. MICHOT, C. DANCHIN-BURGE, A. CAPITAN, L. GENESTOUT, S. BARBIER, and S. FRITZ. "Prise en compte des anomalies génétiques en sélection : le cas des bovins." INRA Productions Animales 29, no. 5 (January 9, 2020): 351–58. http://dx.doi.org/10.20870/productions-animales.2016.29.5.3003.
Full textLungu, Vasilica. "Défunt et mobilier associées: la symbolique d`un lit funéraire à Orgamé." CaieteARA. Arhitectură. Restaurare. Arheologie, no. 11 (2020): 13–28. http://dx.doi.org/10.47950/caieteara.2020.11.01.
Full textDissertations / Theses on the topic "Découverte de motifs ADN"
Larsabal, Etienne. "Découverte des motifs souples de classe A : une nouvelle classe de sites d' interaction ADN-protéines chez les procaryotes et eucaryotes inférieurs." Paris 6, 2005. http://www.theses.fr/2005PA066216.
Full textFloc'hlay, Swann. "Computational analysis and modelling of regulatory networks controlling embryonic development." Electronic Thesis or Diss., Université Paris sciences et lettres, 2020. http://www.theses.fr/2020UPSLE036.
Full textThe development of an embryo derives from the DNA sequence of this organism. Genetic variability gives rise to great morphological diversity, while maintaining a robust general organisation. Mutations present within cis-regulatory regions impact transcription via epigenomic mechanisms. The resulting variability in gene expression can be buffered by tran feedback mechanisms within the regulatory network. The precise organisation of these cis and trans interactions remains difficult to decipher. In order to better grasp the effect of mutations on transcription, I analysed genetic, epigenomic and transcriptomic data in collaboration with the Furlong laboratory (EMBL, Heidelberg). The use of allele-specific data from Drosophila F1 lines enabled to infer direct cis-interactions between the regulatory layers, suggesting a difference in the action of the epigenomic markers H3K27ac and H3K4me3 on gene expression. To better understand the trans impact of the structure of regulatory networks on gene expression, I have built a logical model of the dorsal-ventral axis specification in sea urchin embryo, in collaboration with the Lepage laboratory (iBV, Nice). Multicellular and stochastic analyses permitted to detect key components of the network, including the cross-repression dynamic between Nodal and BMP. To conclude, allele-specific data analysis and logical modelling allowed me to study the mechanisms of transcription regulation from two complementary perspectives
Litim-Mecheri, Isma. "Spécificité des protéines Hox : Rôle des motifs connus et découverte de nouveaux motifs." Thesis, Aix-Marseille 2, 2011. http://www.theses.fr/2011AIX22096.
Full textHox genes are responsible for the identity of segments along the antero-posterior axis. They are evolutionarily conserved and encode transcription factors. In vitro, all Hox proteins bind to a similar nucleotide sequence via a highly conserved DNA binding domain, the homeodomain (HD). This low specificity of DNA binding in vitro contrasts with their specificity in vivo. One way to explain this paradaox is that Hox protein function with protein cofactors, best represented by Extradenticle (Exd) in Drosophila, Pbx in mammals (collectivaly refered as PBC). Hox-PBC interaction relies on a motif located upstream of the HD, conserved in most Hox proteins, the Hexapeptide (HX). Recent work in our group identified a novel mode of Hox-PBC interaction, non-generic, specific to a subset only of Hox paralog groups, and relying on a motif located C-terminal to the HD. This highlight plasticity in Hox-PBC interaction.My PhD work aimed at investigating the mode of action of Hox protein, by studying the function of three protein motifs, with known or putative role in Exd recruitment by the Drosophila Hox protein AbdominalA (AbdA). The approach taken aimed at analyzing, using a large functional window, how these motifs, taken in isolation or collectively, define AbdA protein activity. Conclusions highlight the absence of pleitropy and a high degree of functional interaction for these protein motifs. The second part of my PhD work has been to initiate the search for novel functionally important protein motifs within Hox proteins. This was approached by selecting phylogenetically conserved motifs, and addressing their function in vitro and in vivo following motif mutations. At least one functional domain was isolated, that contributes predominantly to Dfd protein function
Vigneron, Vincent. "Programmation par contraintes et découverte de motifs sur données séquentielles." Thesis, Angers, 2017. http://www.theses.fr/2017ANGE0028/document.
Full textRecent works have shown the relevance of constraint programming to tackle data mining tasks. This thesis follows this approach and addresses motif discovery in sequential data. We focus in particular, in the case of classified sequences, on the search for motifs that best fit each individual class. We propose a language of constraints over matrix domains to model such problems. The language assumes a preprocessing of the data set (e.g., by pre-computing the locations of each character in each sequence) and views a motif as the choice of a sub-matrix (i.e., characters, sequences, and locations). We introduce different matrix constraints (compatibility of locations with the database, class covering, location-based character ordering common to sequences, etc.) and address two NP-complete problems: the search for class-specific totally ordered motifs (e.g., exclusive subsequences) or partially ordered motifs. We provide two CSP models that rely on global constraints to prove exclusivity. We then present a memetic algorithm that uses this CSP model during initialisation and intensification. This hybrid approach proves competitive compared to the pure CSP approach as shown by experiments carried out on protein sequences. Lastly, we investigate data set preprocessing based on patterns rather than characters, in order to reduce the size of the resulting matrix domain. To this end, we present and compare two alternative methods, one based on lattice search, the other on dynamic programming
Khiari, Medhi. "Découverte de motifs n-aires utilisant la programmation par contraintes." Phd thesis, Université de Caen, 2012. http://tel.archives-ouvertes.fr/tel-01023102.
Full textKhiari, Mehdi. "Découverte de motifs n-aires utilisant la programmation par contraintes." Caen, 2012. http://www.theses.fr/2012CAEN2015.
Full textUntil recently, data mining and Constraint Programming have been developed separately one from the other. This thesis is one of the first to address the relationships between these two areas of computer science, in particular using constraint programming techniques for constraint-based mining. The data mining community has proposed generic approaches to discover local patterns under constraints, and this issue is rather well-mastered. However, these approaches do not take into consideration that the interest of a pattern often depends on the other patterns. Such a pattern is called n-ary pattern or pattern set. Few works on mining n-ary patterns were conducted and the proposed approaches are ad hoc. This thesis proposes an unified framework for modeling and solving n-ary constraints in data mining. First, the n-ary pattern extraction problem is modeled as a Constraint Satisfaction Problem (CSP). Then, a high-level declarative language for mining n-ary patterns is proposed. This language allows to express a wide range of n-ary constraints. Several solving methods are developed and compared. The main advantages of this framework are its declarative and generic sides. To the best of our knowledge, it is the first generic and flexible framework for modeling and mining n-ary patterns
Muscariello, Armando. "Découverte de motifs variables dans les grandes volumes de données audio." Phd thesis, Université Rennes 1, 2011. http://tel.archives-ouvertes.fr/tel-00642956.
Full textJnoub, Sonia. "La découverte de "soi" dans l'oeuvre romanesque de Michel Butor." Dijon, 2006. http://www.theses.fr/2006DIJOL003.
Full textThe aim of this study is to keep track of the modification of the personage and the ineluctable's quest of its existence. On this perspective, our thesis regarding " the discovery of self in the butor's novels " consiste of three parts : The first part " the initiative's voyage ", presente the role of the voyage in the initiation of the hero and its quest of the truth. The second part " the dynamics of the butor's person and its penchant towards the other world " treats the descent of the personage to the Hades across the dream and the oblivion, and the role of the writing in taking conscience. The last part " narrative progression and thematic progression in Butor's work ", shows how the butor's personage discover it self in the space and in the time, and its reaction to the death. The author pose essential questions concerning the existence. The quotations of numerous old and contemporary writers permit to illuminate our study and to carry a response to the discovery of the self
Jacquemin, Ingrid. "Découverte de motifs relationnels en bioinformatique : application à la prédiction de ponts disulfures." Phd thesis, Université Rennes 1, 2005. http://tel.archives-ouvertes.fr/tel-00185499.
Full textCette thèse propose l'exploration de deux nouvelles pistes pour progresser dans la résolution de prédiction de ponts disulfures dans les protéines. Cette liaison covalente stabilise et contraint fortement la conformation spatiale de la protéine et la connaissance des positions où elle intervient peut réduire considérablement la complexité du problème de la prédiction de la structure 3D. Pour cela, nous utilisons dans un premier temps, l'inférence grammaticale et plus particulièrement les langages de contrôle introduit par Y. Takada, puis dans un deuxième temps, la programmation logique inductive.
Diverses expériences visent à confronter un cadre théorique d'apprentissage et des algorithmes généraux d'inférence grammaticale régulière à une application pratique de prédiction d'appariements spécifiques au sein d'une séquence protéique. D'autres expérimentations montrent que la programmation logique inductive donne de bons résultats sur la prédiction de l'état oxydé des cystéines en inférant des règles interprétables par les biologistes. Nous proposons un algorithme d'induction heuristique dont l'idée est d'effectuer plusieurs phases d'apprentissage en tenant compte des résultats obtenus aux phases précédentes permettant ainsi de diminuer considérablement la combinatoire dans les espaces d'hypothèses logiques en construisant des règles de plus en plus discriminantes.
Soulet, Arnaud. "Un cadre générique de découverte de motifs sous contraintes fondées sur des primitives." Phd thesis, Université de Caen, 2006. http://tel.archives-ouvertes.fr/tel-00123185.
Full textl'extraction de connaissances dans les bases de données. Cette thèse
traite de l'extraction de motifs locaux sous contraintes. Nous
apportons un éclairage nouveau avec un cadre combinant des primitives
monotones pour définir des contraintes quelconques. La variété de ces
contraintes exprime avec précision l'archétype des motifs recherchés
par l'utilisateur au sein d'une base de données. Nous proposons alors
deux types d'approche d'extraction automatique et générique malgré les
difficultés algorithmiques inhérentes à cette tâche. Leurs efficacités
reposent principalement sur l'usage de conditions nécessaires pour
approximer les variations de la contrainte. D'une part, des méthodes
de relaxations permettent de ré-utiliser les nombreux algorithmes
usuels du domaines. D'autre part, nous réalisons des méthodes
d'extraction directes dédiées aux motifs ensemblistes pour les données
larges ou corrélées en exploitant des classes d'équivalences. Enfin,
l'utilisation de nos méthodes ont permi la découverte de phénomènes
locaux lors d'applications industrielles et médicales.
Books on the topic "Découverte de motifs ADN"
Frank-Kamenetskii, M. D. Le fil de la vie: La découverte de l'ADN. Paris: Flammarion, 1996.
Find full textConference papers on the topic "Découverte de motifs ADN"
Talenti, Simona. "Visions “humaines” ou “infernales”: les moyens de transport et la perception de la ville chez Le Corbusier." In LC2015 - Le Corbusier, 50 years later. Valencia: Universitat Politècnica València, 2015. http://dx.doi.org/10.4995/lc2015.2015.821.
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