5XTW

Crystal structure of the CysR-CTLD2 fragment of human MR at acidic pH

  • Classification: SUGAR BINDING PROTEIN
  • Organism(s): Homo sapiens
  • Expression System: Trichoplusia ni
  • Mutation(s): No 

  • Deposited: 2017-06-21 Released: 2017-12-27 
  • Deposition Author(s): He, Y., Hu, Z.
  • Funding Organization(s): Chinese Academy of Sciences, National Natural Science Foundation of China

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural Insights into the pH-Dependent Conformational Change and Collagen Recognition of the Human Mannose Receptor

Hu, Z.Shi, X.Yu, B.Li, N.Huang, Y.He, Y.

(2018) Structure 26: 60-71.e3

  • DOI: 10.1016/j.str.2017.11.006
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Mannose receptor (MR, CD206) is an endocytic receptor on microphages and dendritic cells. It recognizes multiple ligands and plays important roles in regulating immune responses and maintaining glycoprotein homeostasis. However, the structure and fun ...

    Mannose receptor (MR, CD206) is an endocytic receptor on microphages and dendritic cells. It recognizes multiple ligands and plays important roles in regulating immune responses and maintaining glycoprotein homeostasis. However, the structure and functional mechanism of MR remain unclear. Here we determine the crystal structures of the N-terminal fragments of MR and reveal the potential binding mode of collagen on the fibronectin II domain. The SAXS and other biophysical data suggest that MR adopts an extended conformation at physiological pH and undergoes conformational changes as pH decreases, resulting in a compact conformation in an acidic environment. Moreover, biochemical data show that MR binds to collagen in a Ca 2+ -enhanced manner at physiological pH, whereas Ca 2+ has no effect on the binding at acidic pH. These results provide a model for the dynamic mechanism of MR regarding its ligand binding and release during the recycling between cell surface and endosomes.


    Organizational Affiliation

    State Key Laboratory of Molecular Biology, National Center for Protein Science Shanghai, Shanghai Science Research Center, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 333 Haike Road, Shanghai 201210, China. Electronic address: he@sibcb.ac.cn.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Macrophage mannose receptor 1
A, B, C, D, E, F, G, H
475Homo sapiensMutation(s): 0 
Gene Names: MRC1CLEC13DCLEC13DLMRC1L1
Find proteins for P22897 (Homo sapiens)
Go to UniProtKB:  P22897
NIH Common Fund Data Resources
PHAROS  P22897
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MES
Query on MES

Download CCD File 
A, B, C, D, E, F, G, H
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download CCD File 
A, C, D, E, F, H
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.819α = 91.11
b = 164.768β = 97.56
c = 164.596γ = 97.5
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data processing
HKL-3000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2017-06-21 
  • Released Date: 2017-12-27 
  • Deposition Author(s): He, Y., Hu, Z.

Funding OrganizationLocationGrant Number
Chinese Academy of SciencesChinaXDB08020102
National Natural Science Foundation of ChinaChina31270772

Revision History 

  • Version 1.0: 2017-12-27
    Type: Initial release
  • Version 1.1: 2018-01-17
    Changes: Database references