Data/hora: 22/09/2024 06:44:47

Biblioteca(s): 	Embrapa Recursos Genéticos e Biotecnologia; Embrapa Semiárido.	
Data corrente: 	19/02/2021	
Data da última atualização: 	07/02/2022	
Autoria: 	ARRAES, F. B. M.; MARTINS-DE-SA, D; VASQUEZ, D. D. N.; MELO, B. P.; FAHEEM, M.; MACEDO, L. L. P. de; MORGANTE, C. V.; BARBOSA, J. A. R. G.; TOGAWA, R. C.; MOREIRA, V. J. V.; DANCHIN, E. G. J.; SA, M. F. G. de.	
Afiliação: 	FABRICIO BARBOSA MONTEIRO ARRAES; DIOGO MARTINS-DE-SA; DANIEL D. NORIEGA VASQUEZ; BRUNO PAES MELO; MUHAMMAD FAHEEM; LEONARDO LIMA PEPINO DE MACEDO; CAROLINA VIANNA MORGANTE, CPATSA; JOÃO ALEXANDRE R. G. BARBOSA; ROBERTO COITI TOGAWA; VALDEIR JUNIO VAZ MOREIRA; ETIENNE G. J. DANCHIN; MARIA FATIMA GROSSI DE SA.	
Título: 	Dissecting protein domain variability in the core rna interference machinery of five insect orders.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	RNA Biology, v. 18, n. 11, p. 1653-1681, 2021.	
DOI: 	https://doi.org/10.1080/15476286.2020.1861816	
Idioma: 	Inglês	
Conteúdo: 	RNA interference (RNAi)-mediated gene silencing can be used to control specific insect pest populations. Unfortunately, the variable efficiency in the knockdown levels of target genes has narrowed the applicability of this technology to a few species. Here, we examine the current state of knowledge regarding the miRNA (micro RNA) and siRNA (small interfering RNA) pathways in insects and investigate the structural variability at key protein domains of the RNAi machinery. Our goal was to correlate domain variability with mechanisms affecting the gene silencing efficiency. To this end, the protein domains of 168 insect species, encompassing the orders Coleoptera, Diptera, Hemiptera, Hymenoptera, and Lepidoptera, were analysed using our pipeline, which takes advantage of meticulous structure-based sequence alignments. We used phylogenetic inference and the evolutionary rate coefficient (K) to outline the variability across domain regions and surfaces. Our results show that four domains, namely dsrm, Helicase, PAZ and Ribonuclease III, are the main contributors of protein variability in the RNAi machinery across different insect orders. We discuss the potential roles of these domains in regulating RNAi-mediated gene silencing and the role of loop regions in fine-tuning RNAi efficiency. Additionally, we identified several order-specific singularities which indicate that lepidopterans have evolved differently from other insect orders, possibly due to constant coevolution with plants and viruses. In conclusion, our results highlight several variability hotspots that deserve further investigation in order to improve the application of RNAi technology in the control of insect pests.	
Palavras-Chave: 	Argonaute; DCR1; Dicer; Drosha; DsRBDs; Evolução da proteína; In silico analysis; Loquacious; Pasha; Protein evolution; R2D2; RIIID II; Sequência de proteínas inteira; Structure-function relationship.	
Thesagro: 	Controle Genético; Genoma; Inseto; Praga; Proteína.	
Thesaurus Nal: 	Insect control; Pest control; Protein structure; Proteins.	
Categoria do assunto: 	--
G Melhoramento Genético	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/230917/1/Dissecting-protein-domain-variability-2021.pdf	
Registro original: 	Embrapa Semiárido (CPATSA)	
Exemplares: 	CPATSA - (59460-1) - UPC - AP - DD -  -  -  - DIS
CENARGEN - (38476-1) - UPC - AP - DD -  -  -  - DIS