5SZK

Structure of human N-terminally engineered Rab1b in complex with the bMERB domain of Mical-cL


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

bMERB domains are bivalent Rab8 family effectors evolved by gene duplication.

Rai, A.Oprisko, A.Campos, J.Fu, Y.Friese, T.Itzen, A.Goody, R.S.Gazdag, E.M.Muller, M.P.

(2016) Elife 5: --

  • DOI: 10.7554/eLife.18675
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • In their active GTP-bound form, Rab proteins interact with proteins termed effector molecules. In this study, we have thoroughly characterized a Rab effector domain that is present in proteins of the Mical and EHBP families, both known to act in endo ...

    In their active GTP-bound form, Rab proteins interact with proteins termed effector molecules. In this study, we have thoroughly characterized a Rab effector domain that is present in proteins of the Mical and EHBP families, both known to act in endosomal trafficking. Within our study, we show that these effectors display a preference for Rab8 family proteins (Rab8, 10, 13 and 15) and that some of the effector domains can bind two Rab proteins via separate binding sites. Structural analysis allowed us to explain the specificity towards Rab8 family members and the presence of two similar Rab binding sites that must have evolved via gene duplication. This study is the first to thoroughly characterize a Rab effector protein that contains two separate Rab binding sites within a single domain, allowing Micals and EHBPs to bind two Rabs simultaneously, thus suggesting previously unknown functions of these effector molecules in endosomal trafficking.


    Organizational Affiliation

    Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Dortmund, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MICAL C-terminal-like protein
A
153Homo sapiensMutation(s): 0 
Gene Names: MICALCL
Find proteins for Q6ZW33 (Homo sapiens)
Go to Gene View: MICALCL
Go to UniProtKB:  Q6ZW33
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ras-related protein Rab-1B
B
203Homo sapiensMutation(s): 3 
Gene Names: RAB1B
Find proteins for Q9H0U4 (Homo sapiens)
Go to Gene View: RAB1B
Go to UniProtKB:  Q9H0U4
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
GNP
Query on GNP

Download SDF File 
Download CCD File 
B
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
C10 H17 N6 O13 P3
UQABYHGXWYXDTK-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.207 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 62.230α = 90.00
b = 117.030β = 90.00
c = 139.430γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PHASERphasing
PHENIXrefinement
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research FoundationGermanySFB642, grant A4
Max Planck SocietyGermany--

Revision History 

  • Version 1.0: 2016-08-24
    Type: Initial release
  • Version 1.1: 2016-09-07
    Type: Database references
  • Version 1.2: 2016-09-14
    Type: Database references
  • Version 1.3: 2017-09-06
    Type: Author supporting evidence