Experiment / E0EW36DHUIntegrated lentiMPRA

Original N-zip 3′ UTR tiling library in primary cortical neurons

Massively parallel identification of mRNA localization elements in primary cortical neurons

A 4,813-element library of 75–110-nt tiles spanning selected mouse 3′ UTRs was cloned downstream of GFP in a pooled lentiviral reporter and assayed after neurite/soma fractionation. The packaged table contains the published baseline WT localization scores and the reported shElavl234/shScramble and depolarization comparisons.

Processed tables are specific to each experiment. Column names, units, measurements, and table structure are not standardized across the database. Check this experiment’s column definitions and quality-control notes before comparing or combining data.

Perturbation & assay details

Baseline; 3-hour 55 mM KCl depolarization; shElavl2/3/4 versus scrambled shRNA

A neuron-specific synapsin promoter drove a lentiviral GFP reporter carrying each tiled 3′ UTR fragment. RNA from soma and neurites was reverse-transcribed using an adapter primer, UMI-tagged, PCR-amplified and sequenced; the primary readout is neurite/soma log2 enrichment rather than conventional whole-cell transcriptional activity.

Processed data

50 rows per page. Click a cell to inspect its full value.

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Filters apply to this table only. The CSV download contains the complete processed table; filtered rows are available through the API.

Column dictionary · 24 definitions
element_id
Stable identifier generated from the source Ensembl gene ID, source gene name and tile ID.
source_gene_id
Ensembl gene ID of the source transcript/gene.
source_gene_name
Source gene name used by the authors.
tile_id
Tile number in the source 3′ UTR, ordered by genomic position.
tile_sequence
DNA sequence of the tested 3′ UTR fragment, without the flanking library adapters.
tile_size
Reported length of the tile in nucleotides.
utr_length
Total length of the selected source 3′ UTR sequence in nucleotides.
tile_offset
Offset between adjacent tiles in nucleotides.
max_at_repeat_units
Maximum number of complete alternating A/T or T/A dinucleotide repeat units computed from the supplied DNA sequence; the DNA representation of the paper’s (AU)n motif.
max_at_alternating_run_nt
Length in nucleotides of the longest uninterrupted alternating A/T run computed from the supplied sequence.
let7_seed_site_count
Count of overlapping exact CTACCTC matches, the DNA encoding of the paper’s CUACCUC let-7 seed motif.
deSeq_log2ratio_neurite_soma_wt
DESeq2 WT primary-condition log2 fold change for neurite versus soma.
deSeq_padj_neurite_soma_wt
Benjamini–Hochberg adjusted P value for the WT neurite versus soma DESeq2 test.
mean_log2ratio_neurite_soma_wt
Mean neurite/soma log2 ratio reported for the WT primary condition.
mean_padj_neurite_soma_wt
Adjusted P value accompanying the reported WT mean neurite/soma ratio.
mean_log2ratio_neurite_soma_shElavl234
Mean neurite/soma log2 ratio in PCNs expressing shElavl2/3/4.
mean_padj_neurite_soma_shElavl234
Adjusted P value for the shElavl2/3/4 neurite/soma result.
mean_log2ratio_neurite_soma_shScramble
Mean neurite/soma log2 ratio in scrambled-shRNA control PCNs.
mean_padj_neurite_soma_shScramble
Adjusted P value for the scrambled-shRNA neurite/soma result.
median_log2ratio_neurite_soma_depolarized
Median neurite/soma log2 ratio after depolarization.
median_log2ratio_neurite_soma_depolarization_control
Median neurite/soma log2 ratio in the matched non-depolarized control.
deSeq_log2fc_neurite_soma_depolarization_interaction
DESeq2 log2 fold-change interaction for the neurite/soma localization difference between depolarized and control PCNs.
deSeq_padj_neurite_soma_depolarization_interaction
Benjamini–Hochberg adjusted P value for the depolarization-by-compartment interaction.
qc_pass
All rows in the output passed the packaged-table QC filter.

Quality control

The paper retained reads containing the 3′ adapter, extracted the preceding UMI, exact-matched reads to library sequences, normalized counts to total mapped reads, and required at least 20 reads on average; it reports 4,745 tiles with at least three samples at that threshold (98.5%) and Spearman R > 0.85 across compartment replicates. DESeq2 Wald tests with Benjamini–Hochberg correction were used for tile significance. Because per-sample read counts were not included in the deposited supplementary workbook, the reproducible packaged-table filter retained rows with non-missing published WT DESeq2 log2ratio and adjusted P value (4,775/4,813 rows) and excluded the 38 rows with missing primary QC/statistical values.

Curation notes

The table is a clean sequence-to-localization-effect view of Supplementary Tables 1a/1b. It does not contain per-sample DNA/RNA counts because those are not provided in the supplementary workbook; the authors’ raw reads are deposited under E-MTAB-10902/ERP133202 and were not downloaded. The paper’s reported read-threshold total (4,745) cannot be reproduced row-by-row from the supplement, so rows with missing WT DESeq2 effect or adjusted P value were removed as the available QC proxy. Original library output contains 4775 QC-passing tiles.

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