7N88

The cryoEM structure of LbpB from N. gonorrhoeae in complex with lactoferrin


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structural insight into the dual function of LbpB in mediating Neisserial pathogenesis.

Yadav, R.Govindan, S.Daczkowski, C.Mesecar, A.Chakravarthy, S.Noinaj, N.

(2021) Elife 10

  • DOI: 10.7554/eLife.71683
  • Primary Citation of Related Structures:  
    7JRD, 7N88

  • PubMed Abstract: 
  • Lactoferrin-binding protein B (LbpB) is a lipoprotein present on the surface of Neisseria that has been postulated to serve dual functions during pathogenesis in both iron acquisition from lactoferrin (Lf), and in providing protection against the cationic antimicrobial peptide lactoferricin (Lfcn) ...

    Lactoferrin-binding protein B (LbpB) is a lipoprotein present on the surface of Neisseria that has been postulated to serve dual functions during pathogenesis in both iron acquisition from lactoferrin (Lf), and in providing protection against the cationic antimicrobial peptide lactoferricin (Lfcn). While previous studies support a dual role for LbpB, exactly how these ligands interact with LbpB has remained unknown. Here, we present the structures of LbpB from N. meningitidis and N. gonorrhoeae in complex with human holo-Lf, forming a 1:1 complex and confirmed by size-exclusion chromatography small-angle X-ray scattering. LbpB consists of N- and C-lobes with the N-lobe interacting extensively with the C-lobe of Lf. Our structures provide insight into LbpB's preference towards holo-Lf, and our mutagenesis and binding studies show that Lf and Lfcn bind independently. Our studies provide the molecular details for how LbpB serves to capture and preserve Lf in an iron-bound state for delivery to the membrane transporter LbpA for iron piracy, and as an antimicrobial peptide sink to evade host immune defenses.


    Organizational Affiliation

    Purdue Institute for Inflammation, Immunology and Infectious Disease, Purdue University, West Lafayette, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Lactoferrin-binding protein BA712Neisseria gonorrhoeaeMutation(s): 0 
Gene Names: lbpB
UniProt
Find proteins for Q9Z4N2 (Neisseria gonorrhoeae)
Explore Q9Z4N2 
Go to UniProtKB:  Q9Z4N2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Z4N2
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
LactotransferrinB691Homo sapiensMutation(s): 0 
Gene Names: LTFGIG12LF
EC: 3.4.21
UniProt & NIH Common Fund Data Resources
Find proteins for P02788 (Homo sapiens)
Explore P02788 
Go to UniProtKB:  P02788
PHAROS:  P02788
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02788
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BCT
Query on BCT

Download Ideal Coordinates CCD File 
E [auth B],
F [auth B]
BICARBONATE ION
C H O3
BVKZGUZCCUSVTD-UHFFFAOYSA-M
 Ligand Interaction
FE
Query on FE

Download Ideal Coordinates CCD File 
C [auth B],
D [auth B]
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other governmentUnited StatesPurdue University

Revision History  (Full details and data files)

  • Version 1.0: 2021-12-01
    Type: Initial release