Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 15.06 kDa 
• Atom Count: 1060 
• Modelled Residue Count: 129 
• Deposited Residue Count: 129 
• Unique protein chains: 1

2A2P

Solution structure of SelM from Mus musculus

• PDB DOI: 10.2210/pdb2A2P/pdb
• BMRB: 6739

• Classification: OXIDOREDUCTASE
• Organism(s): Mus musculus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2005-06-22 Released: 2005-12-06 
• Deposition Author(s): Ferguson, A.D., Labunskyy, V.M., Fomenko, D.E., Chelliah, Y., Amezcua, C.A., Rizo, J., Gladyshev, V.N., Deisenhofer, J.

---

Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 1000 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

NMR Structures of the Selenoproteins Sep15 and SelM Reveal Redox Activity of a New Thioredoxin-like Family.

Ferguson, A.D., Labunskyy, V.M., Fomenko, D.E., Chelliah, Y., Amezcua, C.A., Rizo, J., Gladyshev, V.N., Deisenhofer, J.

(2006) J Biol Chem 281: 3536-3543

• PubMed: 16319061 
• DOI: 10.1074/jbc.M511386200
• Primary Citation of Related Structures:  
  2A2P, 2A4H


• PubMed Abstract: 
  

Selenium has significant health benefits, including potent cancer prevention activity and roles in immune function and the male reproductive system. Selenium-containing proteins, which incorporate this essential micronutrient as selenocysteine, are proposed to mediate the positive effects of dietary selenium. Presented here are the solution NMR structures of the selenoprotein SelM and an ortholog of the selenoprotein Sep15. These data reveal that Sep15 and SelM are structural homologs that establish a new thioredoxin-like protein family. The location of the active-site redox motifs within the fold together with the observed localized conformational changes after thiol-disulfide exchange and measured redox potential indicate that they have redox activity. In mammals, Sep15 expression is regulated by dietary selenium, and either decreased or increased expression of this selenoprotein alters redox homeostasis. A physiological role for Sep15 and SelM as thiol-disulfide oxidoreductases and their contribution to the quality control pathways of the endoplasmic reticulum are discussed.

---

Organizational Affiliation: 

Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Selenoprotein M	A	129	Mus musculus	Mutation(s): 1  Gene Names: Sepm, Selm, Selenom
UniProt
Find proteins for Q8VHC3 (Mus musculus) Explore Q8VHC3  Go to UniProtKB:  Q8VHC3

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 1000 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2A2P Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-06-22 
• Released Date: 2005-12-06 
Deposition Author(s): Ferguson, A.D., Labunskyy, V.M., Fomenko, D.E., Chelliah, Y., Amezcua, C.A., Rizo, J., Gladyshev, V.N., Deisenhofer, J.

Revision History  

• Version 1.0: 2005-12-06
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2014-04-09
  Changes: Structure summary
• Version 1.4: 2021-10-20
  Changes: Database references