5W08

A/Texas/50/2012(H3N2) Influenza hemagglutinin in complex with K03.12 Fab


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.241 

Starting Models: experimental
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Ligand Structure Quality Assessment 


This is version 2.1 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 HA1
A, B, C, D, E
A, B, C, D, E, F
291Influenza A virus (A/Texas/50/2012(H3N2))Mutation(s): 0 
Gene Names: HAL998_47834gpHA
UniProt
Find proteins for R4L1D1 (Influenza A virus)
Explore R4L1D1 
Go to UniProtKB:  R4L1D1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupR4L1D1
Glycosylation
Glycosylation Sites: 3
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
K03.12 antibody heavy chain
G, I, K, M, O
G, I, K, M, O, Q
244Homo sapiensMutation(s): 0 
UniProt
Find proteins for S6C4S0 (Homo sapiens)
Explore S6C4S0 
Go to UniProtKB:  S6C4S0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupS6C4S0
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
K03.12 antibody light chain
H, J, L, N, P
H, J, L, N, P, R
214Homo 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

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Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
S, V, W, Y, Z
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-glucopyranoseAA [auth a],
BA [auth b],
T,
U,
X
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
CA [auth A]
DA [auth A]
EA [auth A]
FA [auth B]
GA [auth C]
CA [auth A],
DA [auth A],
EA [auth A],
FA [auth B],
GA [auth C],
HA [auth C],
IA [auth C],
JA [auth D],
KA [auth D],
LA [auth D],
MA [auth E],
NA [auth E],
OA [auth E],
PA [auth F],
QA [auth F],
RA [auth F]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
GOL
Query on GOL

Download Ideal Coordinates CCD File 
SA [auth I]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.241 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.8α = 90
b = 325.12β = 97.63
c = 156.99γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


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: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2023-10-04
    Changes: Data collection, Database references, Refinement description, Structure summary