Domain of unknown function 1792 (DUF1792) with manganese

Experimental Data Snapshot

  • Resolution: 1.34 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.147 
  • R-Value Observed: 0.149 

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The highly conserved domain of unknown function 1792 has a distinct glycosyltransferase fold.

Zhang, H.Zhu, F.Yang, T.Ding, L.Zhou, M.Li, J.Haslam, S.M.Dell, A.Erlandsen, H.Wu, H.

(2014) Nat Commun 5: 4339-4339

  • DOI: https://doi.org/10.1038/ncomms5339
  • Primary Citation of Related Structures:  
    4PFX, 4PHR, 4PHS

  • PubMed Abstract: 

    More than 33,000 glycosyltransferases have been identified. Structural studies, however, have only revealed two distinct glycosyltransferase (GT) folds, GT-A and GT-B. Here we report a 1.34-Å resolution X-ray crystallographic structure of a previously uncharacterized 'domain of unknown function' 1792 (DUF1792) and show that the domain adopts a new fold and is required for glycosylation of a family of serine-rich repeat streptococcal adhesins. Biochemical studies reveal that the domain is a glucosyltransferase, and it catalyses the transfer of glucose to the branch point of the hexasaccharide O-linked to the serine-rich repeat of the bacterial adhesin, Fap1 of Streptococcus parasanguinis. DUF1792 homologues from both Gram-positive and Gram-negative bacteria also exhibit the activity. Thus, DUF1792 represents a new family of glycosyltransferases; therefore, we designate it as a GT-D glycosyltransferase fold. As the domain is highly conserved in bacteria and not found in eukaryotes, it can be explored as a new antibacterial target.

  • Organizational Affiliation

    Departments of Pediatric Dentistry, Microbiology, Schools of Dentistry and Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Putative glycosyltransferase (GalT1)277Streptococcus parasanguinis FW213Mutation(s): 0 
Gene Names: galT1Spaf_1933
Find proteins for I1ZPA1 (Streptococcus parasanguinis FW213)
Explore I1ZPA1 
Go to UniProtKB:  I1ZPA1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupI1ZPA1
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.34 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.147 
  • R-Value Observed: 0.149 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.474α = 90
b = 45.409β = 109.74
c = 78.782γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-08-06
    Type: Initial release
  • Version 1.1: 2015-02-04
    Changes: Derived calculations
  • Version 1.2: 2015-10-14
    Changes: Data collection
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references, Derived calculations