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RNA-Seq analysis of the gene expression profile of wild type and dRassf mutant flies after infection by Flock House Virus

ABSTRACT: RNA-Seq analysis of the gene expression profile of wild type and dRassf mutant flies after infection by Flock House Virus

PROVIDER: PRJNA799124 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17686667.fastq.gz	Fastqsanger.gz
	SRR17686668.fastq.gz	Fastqsanger.gz
	SRR17686669.fastq.gz	Fastqsanger.gz
	SRR17686670.fastq.gz	Fastqsanger.gz
	SRR17686671.fastq.gz	Fastqsanger.gz

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RNA-Seq analysis of the gene expression profile of wild type and dRassf mutant flies after infection by Flock House Virus

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Project description:Flock House virus (FHV) serves as a model system for understanding infection mechanisms utilized by non-enveloped viruses to transport across cellular membranes. During the infection cycle of FHV, a fundamental stage involves disruption of the endosomal membrane by membrane active peptides, following externalization of the peptides from the capsid interior. The FHV lytic agents are the 44 C-terminal amino acids residues of the capsid protein, which are auto-catalytically cleaved during the capsid maturation process. The cleaved peptides are termed ? peptides. In this study, we perform multi-scale molecular dynamics simulations including 40??s all-atom molecular dynamics simulations to study the behavior of pre-inserted transmembrane lytic peptides at a high concentration in a neutral membrane. We study the dynamical organization among peptides to form oligomeric bundles in four systems including the wild-type ? peptide and three mutant forms; namely, a truncation mutant in which the 23 C-terminal residues are deleted (?1), a construct where the 8 C-terminal residues of ? are fused to ?1 (?385-399 ?) and a single-point mutant (F402A ?), all of which have been experimentally shown to drastically affect infectivity and lytic activity compared to the wild-type ?. Our results shed light on the actions of varied forms of the FHV lytic peptide including membrane insertion, trans-membrane stability, peptide oligomerization, water permeation activity and dynamic pore formation. Findings from this study provide detailed structural information and rationale for the differences in lytic activity among variants of FHV ?.

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