4B7Y

Crystal structure of the MSL1-MSL2 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.244 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Msl1-Mediated Dimerization of the Dosage Compensation Complex is Essential for Male X-Chromosome Regulation in Drosophila.

Hallacli, E.Lipp, M.Georgiev, P.Spielman, C.Cusack, S.Akhtar, A.Kadlec, J.

(2012) Mol.Cell 48: 587

  • DOI: 10.1016/j.molcel.2012.09.014
  • Primary Citation of Related Structures:  4B86

  • PubMed Abstract: 
  • The Male-Specific Lethal (MSL) complex regulates dosage compensation of the male X chromosome in Drosophila. Here, we report the crystal structure of its MSL1/MSL2 core, where two MSL2 subunits bind to a dimer formed by two molecules of MSL1. Analysi ...

    The Male-Specific Lethal (MSL) complex regulates dosage compensation of the male X chromosome in Drosophila. Here, we report the crystal structure of its MSL1/MSL2 core, where two MSL2 subunits bind to a dimer formed by two molecules of MSL1. Analysis of structure-based mutants revealed that MSL2 can only interact with the MSL1 dimer, but MSL1 dimerization is MSL2 independent. We show that Msl1 is a substrate for Msl2 E3 ubiquitin ligase activity. ChIP experiments revealed that Msl1 dimerization is essential for targeting and spreading of the MSL complex on X-linked genes; however, Msl1 binding to promoters of male and female cells is independent of the dimer status and other MSL proteins. Finally, we show that loss of Msl1 dimerization leads to male-specific lethality. We propose that Msl1-mediated dimerization of the entire MSL complex is required for Msl2 binding, X chromosome recognition, and spreading along the X chromosome.


    Organizational Affiliation

    Max-Planck-Institut für Immunbiologie und Epigenetik, Stübeweg 51, 79108 Freiburg im Breisgau, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MALE-SPECIFIC LETHAL 1 HOMOLOG
A, B
44Homo sapiensGene Names: MSL1 (MSL1L1)
Find proteins for Q68DK7 (Homo sapiens)
Go to Gene View: MSL1
Go to UniProtKB:  Q68DK7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
MALE-SPECIFIC LETHAL 2 HOMOLOG
C, D
116Homo sapiensGene Names: MSL2 (KIAA1585, MSL2L1, RNF184)
EC: 6.3.2.-
Find proteins for Q9HCI7 (Homo sapiens)
Go to Gene View: MSL2
Go to UniProtKB:  Q9HCI7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
C, D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.244 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 100.990α = 90.00
b = 100.990β = 90.00
c = 88.650γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
PHASERphasing
REFMACrefinement
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-06
    Type: Initial release