Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 Pseudo Symmetry: Cyclic - C2  (3D View)
Pseudo Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 48.95 kDa 
• Atom Count: 3,494 
• Modelled Residue Count: 431 
• Deposited Residue Count: 457 
• Unique protein chains: 2

 6RCQ

PfRH5-binding monoclonal antibody R5.011

• PDB DOI: 10.2210/pdb6RCQ/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2019-04-11 Released: 2019-06-26 
• Deposition Author(s): Alanine, D.W.G., Draper, S.J., Higgins, M.K.
• Funding Organization(s): Wellcome Trust

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.28 Å
• R-Value Free: 0.227 
• R-Value Work: 0.185 
• R-Value Observed: 0.188 

Literature

Human Antibodies that Slow Erythrocyte Invasion Potentiate Malaria-Neutralizing Antibodies.

Alanine, D.G.W., Quinkert, D., Kumarasingha, R., Mehmood, S., Donnellan, F.R., Minkah, N.K., Dadonaite, B., Diouf, A., Galaway, F., Silk, S.E., Jamwal, A., Marshall, J.M., Miura, K., Foquet, L., Elias, S.C., Labbe, G.M., Douglas, A.D., Jin, J., Payne, R.O., Illingworth, J.J., Pattinson, D.J., Pulido, D., Williams, B.G., de Jongh, W.A., Wright, G.J., Kappe, S.H.I., Robinson, C.V., Long, C.A., Crabb, B.S., Gilson, P.R., Higgins, M.K., Draper, S.J.

(2019) Cell 178: 216-228.e21

• PubMed: 31204103 
• DOI: 10.1016/j.cell.2019.05.025
• Primary Citation of Related Structures:  
  6RCO, 6RCQ, 6RCS, 6RCU, 6RCV


• PubMed Abstract: 
  

The Plasmodium falciparum reticulocyte-binding protein homolog 5 (PfRH5) is the leading target for next-generation vaccines against the disease-causing blood-stage of malaria. However, little is known about how human antibodies confer functional immunity against this antigen. We isolated a panel of human monoclonal antibodies (mAbs) against PfRH5 from peripheral blood B cells from vaccinees in the first clinical trial of a PfRH5-based vaccine. We identified a subset of mAbs with neutralizing activity that bind to three distinct sites and another subset of mAbs that are non-functional, or even antagonistic to neutralizing antibodies. We also identify the epitope of a novel group of non-neutralizing antibodies that significantly reduce the speed of red blood cell invasion by the merozoite, thereby potentiating the effect of all neutralizing PfRH5 antibodies as well as synergizing with antibodies targeting other malaria invasion proteins. Our results provide a roadmap for structure-guided vaccine development to maximize antibody efficacy against blood-stage malaria.

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Organizational Affiliation: 

The Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7DQ, UK. Electronic address: [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
R5.011 heavy chain	A	240	Homo sapiens	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
R5.011 light chain	B	217	Homo sapiens	Mutation(s): 0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CAC	D [auth B]	CACODYLATE ION C2 H6 As O2 OGGXGZAMXPVRFZ-UHFFFAOYSA-M
ACT	C [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.28 Å
• R-Value Free: 0.227 
• R-Value Work: 0.185 
• R-Value Observed: 0.188 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 47.858	α = 90
b = 86.375	β = 90
c = 127.409	γ = 90

Software Package:

Software Name	Purpose
BUSTER	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2019-06-26 
Deposition Author(s): Alanine, D.W.G., Draper, S.J., Higgins, M.K.

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Funding Organization	Location	Grant Number
Wellcome Trust	United Kingdom	--

Revision History  

• Version 1.0: 2019-06-26
  Type: Initial release
  
• Version 1.1: 2019-07-10
  Changes: Data collection, Database references