6O1F

Complex between soybean trypsin inhibitor beta1-tryptase and a humanized fab


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.191 

wwPDB Validation 3D Report Full Report



Literature

An Allosteric Anti-tryptase Antibody for the Treatment of Mast Cell-Mediated Severe Asthma.

Maun, H.R.Jackman, J.K.Choy, D.F.Loyet, K.M.Staton, T.L.Jia, G.Dressen, A.Hackney, J.A.Bremer, M.Walters, B.T.Vij, R.Chen, X.Trivedi, N.N.Morando, A.Lipari, M.T.Franke, Y.Wu, X.Zhang, J.Liu, J.Wu, P.Chang, D.Orozco, L.D.Christensen, E.Wong, M.Corpuz, R.Hang, J.Q.Lutman, J.Sukumaran, S.Wu, Y.Ubhayakar, S.Liang, X.Schwartz, L.B.Babina, M.Woodruff, P.G.Fahy, J.V.Ahuja, R.Caughey, G.H.Kusi, A.Dennis, M.S.Eigenbrot, C.Kirchhofer, D.Austin, C.D.Wu, L.C.Koerber, J.T.Lee, W.P.Yaspan, B.L.Alatsis, K.R.Arron, J.R.Lazarus, R.A.Yi, T.

(2019) Cell 179: 417-431.e19

  • DOI: 10.1016/j.cell.2019.09.009
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Severe asthma patients with low type 2 inflammation derive less clinical benefit from therapies targeting type 2 cytokines and represent an unmet need. We show that mast cell tryptase is elevated in severe asthma patients independent of type 2 biomar ...

    Severe asthma patients with low type 2 inflammation derive less clinical benefit from therapies targeting type 2 cytokines and represent an unmet need. We show that mast cell tryptase is elevated in severe asthma patients independent of type 2 biomarker status. Active β-tryptase allele count correlates with blood tryptase levels, and asthma patients carrying more active alleles benefit less from anti-IgE treatment. We generated a noncompetitive inhibitory antibody against human β-tryptase, which dissociates active tetramers into inactive monomers. A 2.15 Å crystal structure of a β-tryptase/antibody complex coupled with biochemical studies reveal the molecular basis for allosteric destabilization of small and large interfaces required for tetramerization. This anti-tryptase antibody potently blocks tryptase enzymatic activity in a humanized mouse model, reducing IgE-mediated systemic anaphylaxis, and inhibits airway tryptase in Ascaris-sensitized cynomolgus monkeys with favorable pharmacokinetics. These data provide a foundation for developing anti-tryptase as a clinical therapy for severe asthma.


    Organizational Affiliation

    Department of Immunology Discovery, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA. Electronic address: yi.tangsheng@gene.com.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tryptase alpha/beta-1A260Homo sapiensMutation(s): 0 
Gene Names: TPSAB1TPS1TPS2TPSB1
EC: 3.4.21.59
Find proteins for Q15661 (Homo sapiens)
Explore Q15661 
Go to UniProtKB:  Q15661
NIH Common Fund Data Resources
PHAROS  Q15661
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Heavy Chain hu31A.v11H227Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Trypsin inhibitor AI192Glycine maxMutation(s): 0 
Gene Names: KTI3
Find proteins for P01070 (Glycine max)
Explore P01070 
Go to UniProtKB:  P01070
Protein Feature View
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  • Reference Sequence

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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Light Chain hu31A.v11L213Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

Download CCD File 
I
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.191 
  • Space Group: P 62 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 128.52α = 90
b = 128.52β = 90
c = 245.88γ = 120
Software Package:
Software NamePurpose
BUSTERrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2019-02-19 
  • Released Date: 2019-10-16 
  • Deposition Author(s): Ultsch, M.H., Yi, T.

Revision History 

  • Version 1.0: 2019-10-16
    Type: Initial release