Intelligent resolution: Integrating Cryo-EM with AI-driven multi-resolution simulations to observe the severe acute respiratory syndrome coronavirus-2 replication-transcription machinery in action.
Anda TrifanDefne GorgunMichael SalimZongyi LiAlexander BraceMaxim ZvyaginHeng MaAustin ClydeDavid ClarkDavid J HardyTom BurnleyLei HuangJohn McCalpinMurali EmaniHyenseung YooJunqi YinAristeidis TsarisVishal SubbiahTanveer RazaJessica LiuNoah TrebeschGeoffrey WellsVenkatesh MysoreThomas GibbsJames PhillipsS Chakra ChennubhotlaIan FosterRick StevensAnima AnandkumarVenkatram VishwanathJohn E StoneEmad TajkhorshidSarah A HarrisArvind RamanathanPublished in: The international journal of high performance computing applications (2022)
The severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) replication transcription complex (RTC) is a multi-domain protein responsible for replicating and transcribing the viral mRNA inside a human cell. Attacking RTC function with pharmaceutical compounds is a pathway to treating COVID-19. Conventional tools, e.g., cryo-electron microscopy and all-atom molecular dynamics (AAMD), do not provide sufficiently high resolution or timescale to capture important dynamics of this molecular machine. Consequently, we develop an innovative workflow that bridges the gap between these resolutions, using mesoscale fluctuating finite element analysis (FFEA) continuum simulations and a hierarchy of AI-methods that continually learn and infer features for maintaining consistency between AAMD and FFEA simulations. We leverage a multi-site distributed workflow manager to orchestrate AI, FFEA, and AAMD jobs, providing optimal resource utilization across HPC centers. Our study provides unprecedented access to study the SARS-CoV-2 RTC machinery, while providing general capability for AI-enabled multi-resolution simulations at scale.
Keyphrases
- sars cov
- respiratory syndrome coronavirus
- molecular dynamics
- artificial intelligence
- coronavirus disease
- high resolution
- density functional theory
- electron microscopy
- single molecule
- endothelial cells
- transcription factor
- monte carlo
- single cell
- finite element analysis
- cell therapy
- mass spectrometry
- binding protein
- mesenchymal stem cells
- bone marrow
- pluripotent stem cells
- induced pluripotent stem cells