7QCB

Williams-Beuren syndrome related methyltransferase WBSCR27 in complex with SAH


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Williams-Beuren Syndrome Related Methyltransferase WBSCR27: From Structure to Possible Function.

Mariasina, S.S.Chang, C.F.Navalayeu, T.L.Chugunova, A.A.Efimov, S.V.Zgoda, V.G.Ivlev, V.A.Dontsova, O.A.Sergiev, P.V.Polshakov, V.I.

(2022) Front Mol Biosci 9: 865743-865743

  • DOI: https://doi.org/10.3389/fmolb.2022.865743
  • Primary Citation of Related Structures:  
    7QCB, 7QCC

  • PubMed Abstract: 

    Williams-Beuren syndrome (WBS) is a genetic disorder associated with the hemizygous deletion of several genes in chromosome 7, encoding 26 proteins. Malfunction of these proteins induce multisystemic failure in an organism. While biological functions of most proteins are more or less established, the one of methyltransferase WBSCR27 remains elusive. To find the substrate of methylation catalyzed by WBSCR27 we constructed mouse cell lines with a Wbscr27 gene knockout and studied the obtained cells using several molecular biology and mass spectrometry techniques. We attempted to pinpoint the methylation target among the RNAs and proteins, but in all cases neither a direct substrate has been identified nor the protein partners have been detected. To reveal the nature of the putative methylation substrate we determined the solution structure and studied the conformational dynamic properties of WBSCR27 in apo state and in complex with S-adenosyl-L-homocysteine (SAH). The protein core was found to form a canonical Rossman fold common for Class I methyltransferases. N-terminus of the protein and the β6-β7 loop were disordered in apo-form, but binding of SAH induced the transition of these fragments to a well-formed substrate binding site. Analyzing the structure of this binding site allows us to suggest potential substrates of WBSCR27 methylation to be probed in further research.


  • Organizational Affiliation

    Faculty of Fundamental Medicine, M.V. Lomonosov Moscow State University, Moscow, Russia.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Methyltransferase-like 27240Mus musculusMutation(s): 0 
Gene Names: Mettl27BC002286Wbscr27
UniProt
Find proteins for Q8BGM4 (Mus musculus)
Explore Q8BGM4 
Go to UniProtKB:  Q8BGM4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8BGM4
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SAH (Subject of Investigation/LOI)
Query on SAH

Download Ideal Coordinates CCD File 
B [auth A]S-ADENOSYL-L-HOMOCYSTEINE
C14 H20 N6 O5 S
ZJUKTBDSGOFHSH-WFMPWKQPSA-N
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Russian Foundation for Basic ResearchRussian Federation20-04-00318

Revision History  (Full details and data files)

  • Version 1.0: 2021-12-29
    Type: Initial release
  • Version 1.1: 2022-07-13
    Changes: Database references
  • Version 1.2: 2022-07-20
    Changes: Database references
  • Version 1.3: 2023-06-14
    Changes: Other
  • Version 1.4: 2024-06-19
    Changes: Data collection, Database references