5W0D

Inferred precursor (UCA) of the human antibody lineage K03.12 in complex with influenza hemagglutinin H1 Solomon Islands/03/2006


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

Memory B Cells that Cross-React with Group 1 and Group 2 Influenza A Viruses Are Abundant in Adult Human Repertoires.

McCarthy, K.R.Watanabe, A.Kuraoka, M.Do, K.T.McGee, C.E.Sempowski, G.D.Kepler, T.B.Schmidt, A.G.Kelsoe, G.Harrison, S.C.

(2018) Immunity 48: 174-184.e9

  • DOI: https://doi.org/10.1016/j.immuni.2017.12.009
  • Primary Citation of Related Structures:  
    5W08, 5W0D

  • PubMed Abstract: 

    Human B cell antigen-receptor (BCR) repertoires reflect repeated exposures to evolving influenza viruses; new exposures update the previously generated B cell memory (Bmem) population. Despite structural similarity of hemagglutinins (HAs) from the two groups of influenza A viruses, cross-reacting antibodies (Abs) are uncommon. We analyzed Bmem compartments in three unrelated, adult donors and found frequent cross-group BCRs, both HA-head directed and non-head directed. Members of a clonal lineage from one donor had a BCR structure similar to that of a previously described Ab, encoded by different gene segments. Comparison showed that both Abs contacted the HA receptor-binding site through long heavy-chain third complementarity determining regions. Affinities of the clonal-lineage BCRs for historical influenza-virus HAs from both group 1 and group 2 viruses suggested that serial responses to seasonal influenza exposures had elicited the lineage and driven affinity maturation. We propose that appropriate immunization regimens might elicit a comparably broad response.


  • Organizational Affiliation

    Laboratory of Molecular Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Hemagglutinin HA1223Influenza A virus (A/Solomon Islands/3/2006(H1N1))Mutation(s): 0 
UniProt
Find proteins for A7UPX0 (Influenza A virus)
Explore A7UPX0 
Go to UniProtKB:  A7UPX0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA7UPX0
Glycosylation
Glycosylation Sites: 3
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Lineage K03.12 UCA antibody heavy chain244Homo sapiensMutation(s): 0 
UniProt
Find proteins for S6B2A6 (Homo sapiens)
Explore S6B2A6 
Go to UniProtKB:  S6B2A6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupS6B2A6
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Lineage K03.12 UCA antibody light chain214Homo sapiensMutation(s): 0 
UniProt
Find proteins for Q6IPQ0 (Homo sapiens)
Explore Q6IPQ0 
Go to UniProtKB:  Q6IPQ0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6IPQ0
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
D, E
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 5
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
F
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.62α = 106.57
b = 61.66β = 95.25
c = 83.86γ = 106.7
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesP01AI089618
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United States1U19AI117892-01

Revision History  (Full details and data files)

  • Version 1.0: 2018-02-14
    Type: Initial release
  • Version 1.1: 2019-12-11
    Changes: Author supporting evidence
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2023-10-04
    Changes: Data collection, Database references, Refinement description, Structure summary
  • Version 2.2: 2024-10-16
    Changes: Structure summary