4GOD

Crystal structure of the SGTA homodimerization domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structures of the Sgt2/SGTA Dimerization Domain with the Get5/UBL4A UBL Domain Reveal an Interaction that Forms a Conserved Dynamic Interface.

Chartron, J.W.Vandervelde, D.G.Clemons, W.M.

(2012) Cell Rep 2: 1620-1632

  • DOI: 10.1016/j.celrep.2012.10.010
  • Primary Citation of Related Structures:  2LXA, 2LXB, 2LXC, 4GOC, 4GOE, 4GOF

  • PubMed Abstract: 
  • In the cytoplasm, the correct delivery of membrane proteins is an essential and highly regulated process. The posttranslational targeting of the important tail-anchor membrane (TA) proteins has recently been under intense investigation. A specialized ...

    In the cytoplasm, the correct delivery of membrane proteins is an essential and highly regulated process. The posttranslational targeting of the important tail-anchor membrane (TA) proteins has recently been under intense investigation. A specialized pathway, called the guided entry of TA proteins (GET) pathway in yeast and the transmembrane domain recognition complex (TRC) pathway in vertebrates, recognizes endoplasmic-reticulum-targeted TA proteins and delivers them through a complex series of handoffs. An early step is the formation of a complex between Sgt2/SGTA, a cochaperone with a presumed ubiquitin-like-binding domain (UBD), and Get5/UBL4A, a ubiquitin-like domain (UBL)-containing protein. We structurally characterize this UBD/UBL interaction for both yeast and human proteins. This characterization is supported by biophysical studies that demonstrate that complex formation is mediated by electrostatics, generating an interface that has high-affinity with rapid kinetics. In total, this work provides a refined model of the interplay of Sgt2 homologs in TA targeting.


    Organizational Affiliation

    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Small glutamine-rich tetratricopeptide repeat-containing protein alpha
A, B
52Homo sapiensGene Names: SGTA (SGT, SGT1)
Find proteins for O43765 (Homo sapiens)
Go to Gene View: SGTA
Go to UniProtKB:  O43765
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MPD
Query on MPD

Download SDF File 
Download CCD File 
A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.197 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 23.603α = 90.00
b = 57.045β = 90.00
c = 64.948γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata reduction
XDSdata scaling
Blu-Icedata collection
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-11-21
    Type: Initial release
  • Version 1.1: 2013-01-02
    Type: Database references
  • Version 1.2: 2013-01-16
    Type: Database references