5MM0

Dolichyl phosphate mannose synthase in complex with GDP-mannose and Mn2+ (donor complex)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.222 

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Literature

Structural basis for dolichylphosphate mannose biosynthesis.

Gandini, R.Reichenbach, T.Tan, T.C.Divne, C.

(2017) Nat Commun 8: 120-120

  • DOI: 10.1038/s41467-017-00187-2
  • Primary Citation of Related Structures:  
    5MLZ, 5MM0, 5MM1

  • PubMed Abstract: 
  • Protein glycosylation is a critical protein modification. In biogenic membranes of eukaryotes and archaea, these reactions require activated mannose in the form of the lipid conjugate dolichylphosphate mannose (Dol-P-Man). The membrane protein dolichylphosphate mannose synthase (DPMS) catalyzes the reaction whereby mannose is transferred from GDP-mannose to the dolichol carrier Dol-P, to yield Dol-P-Man ...

    Protein glycosylation is a critical protein modification. In biogenic membranes of eukaryotes and archaea, these reactions require activated mannose in the form of the lipid conjugate dolichylphosphate mannose (Dol-P-Man). The membrane protein dolichylphosphate mannose synthase (DPMS) catalyzes the reaction whereby mannose is transferred from GDP-mannose to the dolichol carrier Dol-P, to yield Dol-P-Man. Failure to produce or utilize Dol-P-Man compromises organism viability, and in humans, several mutations in the human dpm1 gene lead to congenital disorders of glycosylation (CDG). Here, we report three high-resolution crystal structures of archaeal DPMS from Pyrococcus furiosus, in complex with nucleotide, donor, and glycolipid product. The structures offer snapshots along the catalytic cycle, and reveal how lipid binding couples to movements of interface helices, metal binding, and acceptor loop dynamics to control critical events leading to Dol-P-Man synthesis. The structures also rationalize the loss of dolichylphosphate mannose synthase function in dpm1-associated CDG.The generation of glycolipid dolichylphosphate mannose (Dol-P-Man) is a critical step for protein glycosylation and GPI anchor synthesis. Here the authors report the structure of dolichylphosphate mannose synthase in complex with bound nucleotide and donor to provide insight into the mechanism of Dol-P-Man synthesis.


    Organizational Affiliation

    School of Biotechnology, KTH Royal Institute of Technology, S-10691, Stockholm, Sweden. divne@kth.se.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Dolichol monophosphate mannose synthaseA374Pyrococcus furiosus DSM 3638Mutation(s): 0 
Gene Names: PF0058
Membrane Entity: Yes 
UniProt
Find proteins for Q8U4M3 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Explore Q8U4M3 
Go to UniProtKB:  Q8U4M3
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.222 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.67α = 90
b = 146.32β = 90
c = 95.09γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swedish Research CouncilSweden2011-5768
Swedish Research CouncilSweden2013-5717
Swedish Research CouncilSweden2012-915

Revision History  (Full details and data files)

  • Version 1.0: 2017-08-09
    Type: Initial release