halodata

Halodata maps genome-scale post-transcriptional regulatory interactions in Halobacterium salinarum NRC-1 to elucidate transcription–translation interplay during environmental acclimation.

Key Features:

• Integration of omics data: Combines transcript processing sites (TPSs), SmAP1 binding, genome-wide antisense RNAs (asRNAs), and RNase_2099C knockout differential expression with transcriptome and proteome measurements.
• Comprehensive gene targeting: Identifies that 54% of protein-coding genes are likely targets of multiple post-transcriptional mechanisms, with ~20% subject to combinatorial regulation by SmAP1, asRNAs, and RNase_2099C.
• Conditional regulation insights: Compares mRNA levels (RNA-Seq) and protein levels (SWATH-MS) to reveal conditional post-transcriptional regulation affecting 7% of protein-coding genes across four phases of batch culture growth in complex medium.
• Environmental acclimation mechanisms: Links post-transcriptional regulation to rapid acclimation responses, including activation of gas vesicle biogenesis under anoxic conditions and modulation of transposition frequency by insertion sequence elements IS*200*/IS*605*, IS*4*, and IS*H3*.

Scientific Applications:

• Archaeal gene regulation studies: Supports investigation of post-transcriptional control mechanisms in Archaea, specifically in Halobacterium salinarum NRC-1.
• Environmental acclimation research: Enables study of molecular mechanisms underlying stress responses such as anoxia and transposition regulation mediated by insertion sequences.

Methodology:

Integrates transcriptome and proteome data by comparing mRNA levels from RNA-Seq with protein levels from SWATH-MS and incorporates TPSs, SmAP1 binding, genome-wide asRNA locations, and RNase_2099C knockout differential expression to infer post-transcriptionally regulated genes.