G-protein-signaling modulator 2 - Q8VDU0 (GPSM2_MOUSE)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q8VDU0: 8
 
Function
Plays an important role in mitotic spindle pole organization via its interaction with NUMA1 (PubMed:21816348). Plays an important role in asymmetric cell divisions (PubMed:12571286, PubMed:21816348). Has guanine nucleotide dissociation inhibitor (GDI) activity towards G(i) alpha proteins, such as GNAI1 and GNAI3, and thereby regulates their activity (PubMed:22952234). (data source: UniProt  )
Subunit structure
Interacts with LLGL2 (By similarity). Interacts (via TPR repeat region) with INSC/inscuteable (PubMed:16094321, PubMed:21816348). Interacts (via TPR repeat region) with NUMA1 (PubMed:21816348, PubMed:23318951, PubMed:23665171). INSC and NUMA1 compete for the same binding site, but INSC has higher affinity and can displace NUMA1 (in vitro) (PubMed:21816348). Interacts with GNAI2 (By similarity). Interacts (via GoLoco domains) with the GDP-bound form of GNAI1 and GNAI3; has much lower affinity for the GTP-bound form (PubMed:22952234, PubMed:23665171). Interaction with GDP-bound GNAI3 strongly enhances the affinity for NUMA1 (PubMed:23665171). Interacts (via TPR repeat region) with FRMPD1 (PubMed:23318951). INSC and FRMPD1 compete for the same binding site, but INSC has higher affinity and can displace FRMPD1 (in vitro) (PubMed:23318951). Interacts (via TPR repeat region) with FRMPD4. Identified in a complex with INSC and F2RL2/Par3. (data source: UniProt  )
Domain
Each GoLoco domain can bind one GNAI3 (PubMed:22952234). In the auto-inhibited conformation, the GoLoco domains interact with the TPR repeat region (PubMed:23665171). (data source: UniProt  )
UniProtKB:
Length:
Other Gene names: Gpsm2 Lgn Pins
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
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  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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