4LL7

Structure of She3p amino terminus.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.31 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report



Literature

Structure of a myosinbulletadaptor complex and pairing by cargo.

Shi, H.Singh, N.Esselborn, F.Blobel, G.

(2014) Proc Natl Acad Sci U S A 111: E1082-E1090

  • DOI: 10.1073/pnas.1401428111
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Myosin 4 protein (Myo4p), one of five distinct myosins of yeast, is dedicated to cytoplasmic transport of two types of cargos, zipcoded messenger ribonucleoprotein particles (mRNPs) and tubular endoplasmic reticulum (tER). Neither cargo binds directl ...

    Myosin 4 protein (Myo4p), one of five distinct myosins of yeast, is dedicated to cytoplasmic transport of two types of cargos, zipcoded messenger ribonucleoprotein particles (mRNPs) and tubular endoplasmic reticulum (tER). Neither cargo binds directly to Myo4p. Instead, swi5p-dependent HO expression 3 protein (She3p) serves as an "adaptor" that contains three binding modules, one for Myo4p and one each for zipcoded mRNP and tER. The assembly of a transport-competent motor complex is poorly understood. Here, we report that Myo4p•She3p forms a stable 1:2 heterotrimer in solution. In the Myo4p•She3p crystal structure, Myo4p's C-terminal domain (CTD) assumes a lobster claw-shaped form, the minor prong of which adheres to a pseudocoiled-coil region of She3p. The extensive Myo4p•She3p interactome buries 3,812 Å(2) surface area and is primarily hydrophobic. Because the Myo4p•She3p heterotrimer contains only one myosin molecule, it is not transport-competent. By stepwise reconstitution, we found a single molecule of synthetic oligonucleotide (representing the mRNA zipcode element) bound to a single tetramer of zipcode binding protein She2p to be sufficient for Myo4p•She3p dimerization. Therefore, cargo initiates cross-linking of two Myo4p•She3p heterotrimers to an ensemble that contains two myosin molecules obligatory for movement. An additional crystal structure comprising an overlapping upstream portion of She3p showed continuation of the pseudocoiled-coil structure and revealed another highly conserved surface region. We suggest this region as a candidate binding site for a yet unidentified tER ligand. We propose a model whereby zipcoded mRNP and/or tER ligands couple two Myo4p•She3p heterotrimers and thereby generate a transport-competent motor complex either for separate transport or cotransport of these two cargos.


    Organizational Affiliation

    Laboratory of Cell Biology and Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10065.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SWI5-dependent HO expression protein 3
A, B, C, D, E, F, G, H
96Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SHE3YBR130CYBR1005
Find proteins for P38272 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P38272
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PT
Query on PT

Download CCD File 
A, B, C, D, E, G
PLATINUM (II) ION
Pt
HRGDZIGMBDGFTC-UHFFFAOYSA-N
 Ligand Interaction
DY
Query on DY

Download CCD File 
A, B, C, D, E, F, G, H
DYSPROSIUM ION
Dy
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
DTT
Query on DTT

Download CCD File 
A
2,3-DIHYDROXY-1,4-DITHIOBUTANE
C4 H10 O2 S2
VHJLVAABSRFDPM-IMJSIDKUSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A, B, C, D, E, F, G, H
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
EDO
Query on EDO

Download CCD File 
B, D, E, F, H
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
IPA
Query on IPA

Download CCD File 
C, D, E, F
ISOPROPYL ALCOHOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.31 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.231 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 28.069α = 89.96
b = 49.576β = 84.67
c = 149.95γ = 89.98
Software Package:
Software NamePurpose
CBASSdata collection
SHELXSphasing
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-12
    Type: Initial release
  • Version 1.1: 2014-05-21
    Changes: Database references
  • Version 2.0: 2019-07-31
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Non-polymer description