Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 13.43 kDa 
• Atom Count: 920 
• Modelled Residue Count: 116 
• Deposited Residue Count: 119 
• Unique protein chains: 1

2MTG

Solution structure of the RRM1 of human LARP6

• PDB DOI: 10.2210/pdb2MTG/pdb
• BMRB: 25160

• Classification: RNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-08-18 Released: 2014-12-24 
• Deposition Author(s): Martino, L., Atkinson, A.R., Kelly, G., Conte, M.R.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Synergic interplay of the La motif, RRM1 and the interdomain linker of LARP6 in the recognition of collagen mRNA expands the RNA binding repertoire of the La module.

Martino, L., Pennell, S., Kelly, G., Busi, B., Brown, P., Atkinson, R.A., Salisbury, N.J., Ooi, Z.H., See, K.W., Smerdon, S.J., Alfano, C., Bui, T.T., Conte, M.R.

(2015) Nucleic Acids Res 43: 645-660

• PubMed: 25488812 
• DOI: 10.1093/nar/gku1287
• Primary Citation of Related Structures:  
  2MTF, 2MTG


• PubMed Abstract: 
  

The La-related proteins (LARPs) form a diverse group of RNA-binding proteins characterized by the possession of a composite RNA binding unit, the La module. The La module comprises two domains, the La motif (LaM) and the RRM1, which together recognize and bind to a wide array of RNA substrates. Structural information regarding the La module is at present restricted to the prototypic La protein, which acts as an RNA chaperone binding to 3' UUUOH sequences of nascent RNA polymerase III transcripts. In contrast, LARP6 is implicated in the regulation of collagen synthesis and interacts with a specific stem-loop within the 5' UTR of the collagen mRNA. Here, we present the structure of the LaM and RRM1 of human LARP6 uncovering in both cases considerable structural variation in comparison to the equivalent domains in La and revealing an unprecedented fold for the RRM1. A mutagenic study guided by the structures revealed that RNA recognition requires synergy between the LaM and RRM1 as well as the participation of the interdomain linker, probably in realizing tandem domain configurations and dynamics required for substrate selectivity. Our study highlights a considerable complexity and plasticity in the architecture of the La module within LARPs.

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Related Citations: 

• 1H, 15N and 13C chemical shift assignments of the La motif and RRM1 from human LARP6
  Martino, L., Pennell, S., Kelly, G., Busi, B., Brown, P., Atkinson, A.R., Salisbury, N.JH., Ooi, Z.H., See, K.W., Smerdon, S.J., Alfano, C., Bui, T., Conte, M.R.
  () To be published --: --

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Organizational Affiliation: 

Randall Division of Cell and Molecular Biophysics, King's College London, New Hunt's House, Guy's Campus, London SE1 1UL, UK [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
La-related protein 6	A	119	Homo sapiens	Mutation(s): 0  Gene Names: LARP6
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BRS8 (Homo sapiens) Explore Q9BRS8  Go to UniProtKB:  Q9BRS8
PHAROS:  Q9BRS8 GTEx:  ENSG00000166173

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2MTG Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-08-18 
• Released Date: 2014-12-24 
Deposition Author(s): Martino, L., Atkinson, A.R., Kelly, G., Conte, M.R.

Revision History  

• Version 1.0: 2014-12-24
  Type: Initial release
  
• Version 1.1: 2015-01-28
  Changes: Database references