4MCE image
Deposition Date 2013-08-21
Release Date 2014-09-24
Last Version Date 2024-02-28
Entry Detail
PDB ID:
4MCE
Keywords:
Title:
Crystal structure of the Gas5 GRE Mimic
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Method Details:
Experimental Method:
Resolution:
2.21 Å
R-Value Free:
0.25
R-Value Work:
0.18
R-Value Observed:
0.19
Space Group:
H 3
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:Gas5 GREM Fwd
Chain IDs:A, C
Chain Length:10
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polyribonucleotide
Molecule:Gas5 GREM Rev
Chain IDs:B, D
Chain Length:11
Number of Molecules:2
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Conserved sequence-specific lincRNA-steroid receptor interactions drive transcriptional repression and direct cell fate.
Nat Commun 5 5395 5395 (2014)
PMID: 25377354 DOI: 10.1038/ncomms6395

Abstact

The majority of the eukaryotic genome is transcribed, generating a significant number of long intergenic noncoding RNAs (lincRNAs). Although lincRNAs represent the most poorly understood product of transcription, recent work has shown lincRNAs fulfill important cellular functions. In addition to low sequence conservation, poor understanding of structural mechanisms driving lincRNA biology hinders systematic prediction of their function. Here we report the molecular requirements for the recognition of steroid receptors (SRs) by the lincRNA growth arrest-specific 5 (Gas5), which regulates steroid-mediated transcriptional regulation, growth arrest and apoptosis. We identify the functional Gas5-SR interface and generate point mutations that ablate the SR-Gas5 lincRNA interaction, altering Gas5-driven apoptosis in cancer cell lines. Further, we find that the Gas5 SR-recognition sequence is conserved among haplorhines, with its evolutionary origin as a splice acceptor site. This study demonstrates that lincRNAs can recognize protein targets in a conserved, sequence-specific manner in order to affect critical cell functions.

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Primary Citation of related structures