Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 73.76 kDa 
• Atom Count: 4249 
• Modelled Residue Count: 579 
• Deposited Residue Count: 666 
• Unique protein chains: 1

4JHR

An auto-inhibited conformation of LGN reveals a distinct interaction mode between GoLoco motifs and TPR motifs

• DOI: 10.2210/pdb4JHR/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-03-05 Released: 2013-06-05 
• Deposition Author(s): Pan, Z., Zhu, J., Shang, Y., Wei, Z., Jia, M., Xia, C., Wen, W., Wang, W., Zhang, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.311 
• R-Value Work: 0.250 
• R-Value Observed: 0.253 

Literature

An autoinhibited conformation of LGN reveals a distinct interaction mode between GoLoco motifs and TPR motifs

Pan, Z., Zhu, J., Shang, Y., Wei, Z., Jia, M., Xia, C., Wen, W., Wang, W., Zhang, M.

(2013) Structure 21: 1007-1017

• PubMed: 23665171 
• DOI: 10.1016/j.str.2013.04.005
• Primary Citation of Related Structures:  
  4JHR


• PubMed Abstract: 
  

LGN plays essential roles in asymmetric cell divisions via its N-terminal TPR-motif-mediated binding to mInsc and NuMA. This scaffolding activity requires the release of the autoinhibited conformation of LGN by binding of Gα(i) to its C-terminal GoLoco (GL) motifs. The interaction between the GL and TPR motifs of LGN represents a distinct GL/target binding mode with an unknown mechanism. Here, we show that two consecutive GL motifs of LGN form a minimal TPR-motif-binding unit. GL12 and GL34 bind to TPR0-3 and TPR4-7, respectively. The crystal structure of a truncated LGN reveals that GL34 forms a pair of parallel α helices and binds to the concave surface of TPR4-7, thereby preventing LGN from binding to other targets. Importantly, the GLs bind to TPR motifs with a mode distinct from that observed in the GL/Gα(i)·GDP complexes. Our results also indicate that multiple and orphan GL motif proteins likely respond to G proteins with distinct mechanisms.

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Organizational Affiliation: 

Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, Shanghai, China.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
G-protein-signaling modulator 2	A, B	333	Mus musculus	Mutation(s): 0  Gene Names: Gpsm2, Lgn, Pins
Find proteins for Q8VDU0 (Mus musculus) Explore Q8VDU0  Go to UniProtKB:  Q8VDU0
NIH Common Fund Data Resources
IMPC:  MGI:1923373

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.311 
• R-Value Work: 0.250 
• R-Value Observed: 0.253 
• Space Group: P 2 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 72.213	α = 90
b = 81.803	β = 90
c = 106.942	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASES	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2013-03-05 
• Released Date: 2013-06-05 
Deposition Author(s): Pan, Z., Zhu, J., Shang, Y., Wei, Z., Jia, M., Xia, C., Wen, W., Wang, W., Zhang, M.

Revision History  

• Version 1.0: 2013-06-05
  Type: Initial release
  
• Version 1.1: 2013-09-04
  Changes: Database references
• Version 1.2: 2017-08-02
  Changes: Refinement description, Source and taxonomy