GSE135435
GSE GEOThe Thermus thermophilus DEAD-box protein Hera is a general RNA chaperone and plays a key role in tRNA metabolism
Relations
Summary
RNA helicases catalyze the ATP-dependent destabilization of RNA duplexes. DEAD-box helicases share a helicase core that mediates ATP binding and hydrolysis, RNA binding and unwinding. Most members of this family contain domains flanking the core that can confer RNA substrate specificity and guide the helicase to a specific RNA. However, the in vivo RNA substrates of most helicase are currently not defined. The DEAD-box helicase Hera from Thermus thermophilus contains a helicase core, followed by a dimerization domain (DD) and an RNA binding domain (RBD) that folds into an RNA recognition motif (RRM). The RRM mediates high affinity binding to an RNA hairpin, and an adjacent duplex is then unwound by the helicase core. Hera is a cold-shock protein, and has been suggested to act as an RNA chaperone under cold-shock conditions. Using immunoprecipitation of Hera-RNA complexes and RNA-Seq, we show that Hera binds to a large fraction of T. thermophilus RNAs under normal-growth and cold-shock conditions without a strong sequence preference, in agreement with a structure-specific recognition of RNAs and a general function in RNA metabolism. Under cold-shock conditions, Hera is recruited to RNAs with high propensities to form stable secondary structures. We show that selected RNAs identified, including a set of tRNAs, bind to Hera in vitro, and activate the Hera helicase core. Gene ontology analysis reveals an enrichment of genes related to translation, including mRNAs of ribosomal proteins, tRNAs, tRNA ligases, and tRNA-modifying enzymes, consistent with a key role of Hera in ribosome assembly and tRNA metabolism.
Overall Design
eCLIP-seq in Thermus thermophilus HB27 (DSM 7039, DSMZ; ATCC BAA-163)
Analysis (29 steps)
View Data Processing- Takes output from raw files.
- Run to trim off both 5â and 3â adapters on both reads.
- Command: quality-cutoff 6 -m 18 -a NNNNNAGATCGGAAGAGCACACGTCTGAACTCCAGTCAC -g CTTCCGATCTACAAGTT -g CTTCCGATCTTGGTCCT -A AACTTGTAGATCGGA -A AGGACCAAGATCGGA -A ACTTGTAGATCGGAA -A GGACCAAGATCGGAA -A CTTGTAGATCGGAAG -A GACCAAGATCGGAAG -A TTGTAGATCGGAAGA -A ACCAAGATCGGAAGA -A TGTAGATCGGAAGAG -A CCAAGATCGGAAGAG -A GTAGATCGGAAGAGC -A CAAGATCGGAAGAGC -A TAGATCGGAAGAGCG -A AAGATCGGAAGAGCG -A AGATCGGAAGAGCGT -A GATCGGAAGAGCGTC -A ATCGGAAGAGCGTCG -A TCGGAAGAGCGTCGT -A CGGAAGAGCGTCGTG -A GGAAGAGCGTCGTGT -o /full/path/to/files/file_R1.X1A.fastq.gz.adapterTrim.fastq.gz -p /full/path/to/files/file_R2.X1A.fastq.gz.adapterTrim.fastq.gz /full/path/to/files/file_R1.X1A.fastq.gz /full/path/to/files/file_R2.C01.fastq.gz > /full/path/to/files/file_R1.X1A.fastq.gz.adapterTrim.metrics
- Takes output from cutadapt round 1.
- Run to trim off the 3â adapters on read 2, to control for double ligation events.
- Command: cutadapt -f fastq --match-read-wildcards --times 1 -e 0.1 -O 5 --quality-cutoff 6 -m 18 -A AACTTGTAGATCGGA -A AGGACCAAGATCGGA -A ACTTGTAGATCGGAA -A GGACCAAGATCGGAA -A CTTGTAGATCGGAAG -A GACCAAGATCGGAAG -A TTGTAGATCGGAAGA -A ACCAAGATCGGAAGA -A TGTAGATCGGAAGAG -A CCAAGATCGGAAGAG -A GTAGATCGGAAGAGC -A CAAGATCGGAAGAGC -A TAGATCGGAAGAGCG -A AAGATCGGAAGAGCG -A AGATCGGAAGAGCGT -A GATCGGAAGAGCGTC -A ATCGGAAGAGCGTCG -A TCGGAAGAGCGTCGT -A CGGAAGAGCGTCGTG -A GGAAGAGCGTCGTGT -o /full/path/to/files/file_R1.C01.fastq.gz.adapterTrim.round2.fastq.gz -p /full/path/to/files/file_R2.X1A.fastq.gz.adapterTrim.round2.fastq.gz /full/path/to/files/file_R1.X1A.fastq.gz.adapterTrim.fastq.gz /full/path/to/files/file_R2.X1A.fastq.gz.adapterTrim.fastq.gz > /full/path/to/files/file_R1.X1A.fastq.gz.adapterTrim.round2.metrics
- Takes output from cutadapt round 2.
- Maps to human specific version of RepBase used to remove repetitive elements, helps control for spurious artifacts from rRNA (& other) repetitive reads.
Supplementary Files (1)
GEO Samples (8)
Dataset Citations (1)
SRA Experiments (8) and Runs (8)
Total: 661 MBSample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR9909221 | 1745927 | 174592700 | 67.09 | DK_Hera_1_Hera_S59_L004_R1_001.fastq.gz, DK_Hera_1_Hera_S59_L004_R2_0… | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR9909222 | 1456784 | 145678400 | 57.8 | DK_Hera_2_Hera_S62_L004_R1_001.fastq.gz, DK_Hera_2_Hera_S62_L004_R2_0… | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR9909223 | 1287720 | 128772000 | 49.36 | DK_Hera_3_Hera_S65_L004_R1_001.fastq.gz, DK_Hera_3_Hera_S65_L004_R2_0… | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR9909224 | 1308176 | 130817600 | 51.31 | DK_Hera_4_Hera_S40_L003_R1_001.fastq.gz, DK_Hera_4_Hera_S40_L003_R2_0… | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR9909225 | 2698144 | 269814400 | 104.64 | DK_Hera_1_Input_S57_L004_R1_001.fastq.gz, DK_Hera_1_Input_S57_L004_R2… | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR9909226 | 2564858 | 256485800 | 103.1 | DK_Hera_2_Input_S60_L004_R1_001.fastq.gz, DK_Hera_2_Input_S60_L004_R2… | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR9909227 | 3300545 | 330054500 | 125.67 | DK_Hera_3_Input_S63_L004_R1_001.fastq.gz, DK_Hera_3_Input_S63_L004_R2… | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR9909228 | 2565696 | 256569600 | 101.98 | DK_Hera_4_Input_S38_L003_R1_001.fastq.gz, DK_Hera_4_Input_S38_L003_R2… | SRA |
Linked Publications (1)
Data Files (8)
| Accession | File Name | Stored Type | Output Type | Mapping Assembly | Size | Download | |
|---|---|---|---|---|---|---|---|
| — | DK_Hera_1_Hera_S59_L004_R1_001.fastq.gz | RIP-Seq | 67.1 MB | link | |||
| — | DK_Hera_1_Input_S57_L004_R1_001.fastq.gz | RIP-Seq | 104.6 MB | link | |||
| — | DK_Hera_2_Hera_S62_L004_R1_001.fastq.gz | RIP-Seq | 57.8 MB | link | |||
| — | DK_Hera_2_Input_S60_L004_R1_001.fastq.gz | RIP-Seq | 103.1 MB | link | |||
| — | DK_Hera_3_Hera_S65_L004_R1_001.fastq.gz | RIP-Seq | 49.4 MB | link | |||
| — | DK_Hera_3_Input_S63_L004_R1_001.fastq.gz | RIP-Seq | 125.7 MB | link | |||
| — | DK_Hera_4_Hera_S40_L003_R1_001.fastq.gz | RIP-Seq | 51.3 MB | link | |||
| — | DK_Hera_4_Input_S38_L003_R1_001.fastq.gz | RIP-Seq | 102.0 MB | link |