4XZV

Crystal Structure of SLMO1-TRIAP1 Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.58 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.273 
  • R-Value Observed: 0.275 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Structural insight into the TRIAP1/PRELI-like domain family of mitochondrial phospholipid transfer complexes.

Miliara, X.Garnett, J.A.Tatsuta, T.Abid Ali, F.Baldie, H.Perez-Dorado, I.Simpson, P.Yague, E.Langer, T.Matthews, S.

(2015) EMBO Rep 16: 824-835

  • DOI: 10.15252/embr.201540229
  • Primary Citation of Related Structures:  
    4XZS, 4XZV

  • PubMed Abstract: 
  • The composition of the mitochondrial membrane is important for its architecture and proper function. Mitochondria depend on a tightly regulated supply of phospholipid via intra-mitochondrial synthesis and by direct import from the endoplasmic reticulum. The Ups1/PRELI-like family together with its mitochondrial chaperones (TRIAP1/Mdm35) represent a unique heterodimeric lipid transfer system that is evolutionary conserved from yeast to man ...

    The composition of the mitochondrial membrane is important for its architecture and proper function. Mitochondria depend on a tightly regulated supply of phospholipid via intra-mitochondrial synthesis and by direct import from the endoplasmic reticulum. The Ups1/PRELI-like family together with its mitochondrial chaperones (TRIAP1/Mdm35) represent a unique heterodimeric lipid transfer system that is evolutionary conserved from yeast to man. Work presented here provides new atomic resolution insight into the function of a human member of this system. Crystal structures of free TRIAP1 and the TRIAP1-SLMO1 complex reveal how the PRELI domain is chaperoned during import into the intermembrane mitochondrial space. The structural resemblance of PRELI-like domain of SLMO1 with that of mammalian phoshatidylinositol transfer proteins (PITPs) suggest that they share similar lipid transfer mechanisms, in which access to a buried phospholipid-binding cavity is regulated by conformationally adaptable loops.


    Organizational Affiliation

    Department of Life Sciences, Imperial College London, London, UK s.j.matthews@imperial.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Maltose-binding periplasmic protein,TP53-regulated inhibitor of apoptosis 1A, C, E, G446Escherichia coli K-12Homo sapiens
This entity is chimeric
Mutation(s): 0 
Gene Names: malEb4034JW3994TRIAP115E1.1HSPC132
UniProt & NIH Common Fund Data Resources
Find proteins for P0AEX9 (Escherichia coli (strain K12))
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Go to UniProtKB:  P0AEX9
Find proteins for O43715 (Homo sapiens)
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Go to UniProtKB:  O43715
PHAROS:  O43715
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein slowmo homolog 1B, D, F, H186Homo sapiensMutation(s): 0 
Gene Names: SLMO1C18orf43PRELID3A
UniProt & NIH Common Fund Data Resources
Find proteins for Q96N28 (Homo sapiens)
Explore Q96N28 
Go to UniProtKB:  Q96N28
PHAROS:  Q96N28
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranoseI, J, K, L2N/A Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G07411ON
GlyCosmos:  G07411ON
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 3
IDChainsNameType/Class2D Diagram3D Interactions
PRD_900001
Query on PRD_900001
I, J, K, Lalpha-maltoseOligosaccharide /  Nutrient Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.58 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.273 
  • R-Value Observed: 0.275 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.62α = 87.25
b = 80.68β = 85.62
c = 98.02γ = 89.92
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-01-20
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary