3NUM

Substrate induced remodeling of the active site regulates HtrA1 activity

• PDB DOI: https://doi.org/10.2210/pdb3NUM/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2010-07-07 Released: 2011-02-23 
• Deposition Author(s): Truebestein, L., Tennstaedt, A., Hauske, P., Krojer, T., Kaiser, M., Clausen, T., Ehrmann, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• R-Value Free: 0.287 
• R-Value Work: 0.242 
• R-Value Observed: 0.244 

Starting Model: experimental

Literature

Substrate-induced remodeling of the active site regulates human HTRA1 activity.

Truebestein, L., Tennstaedt, A., Monig, T., Krojer, T., Canellas, F., Kaiser, M., Clausen, T., Ehrmann, M.

(2011) Nat Struct Mol Biol 18: 386-388

• PubMed: 21297635 
• DOI: https://doi.org/10.1038/nsmb.2013
• Primary Citation of Related Structures:  
  3NUM, 3NWU, 3NZI


• PubMed Abstract: 
  

  Crystal structures of active and inactive conformations of the human serine protease HTRA1 reveal that substrate binding to the active site is sufficient to stimulate proteolytic activity. HTRA1 attaches to liposomes, digests misfolded proteins into defined fragments and undergoes substrate-mediated oligomer conversion. In contrast to those of other serine proteases, the PDZ domain of HTRA1 is dispensable for activation or lipid attachment, indicative of different underlying mechanistic features.

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Organizational Affiliation: 

Centre for Medical Biotechnology, Faculty of Biology, University Duisburg-Essen, Essen, Germany.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Macromolecule Content

• Total Structure Weight: 36.43 kDa 
• Atom Count: 1,407 
• Modelled Residue Count: 190 
• Deposited Residue Count: 332 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine protease HTRA1	A	332	Homo sapiens	Mutation(s): 1  Gene Names: HTRA1, HTRA, PRSS11 EC: 3.4.21
UniProt & NIH Common Fund Data Resources
Find proteins for Q92743 (Homo sapiens) Explore Q92743  Go to UniProtKB:  Q92743
PHAROS:  Q92743 GTEx:  ENSG00000166033

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• R-Value Free: 0.287 
• R-Value Work: 0.242 
• R-Value Observed: 0.244 
• Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 109.476	α = 90
b = 109.476	β = 90
c = 113.956	γ = 120

Software Package:

Software Name	Purpose
MxCuBE	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-02-23 
Deposition Author(s): Truebestein, L., Tennstaedt, A., Hauske, P., Krojer, T., Kaiser, M., Clausen, T., Ehrmann, M.

Revision History  

• Version 1.0: 2011-02-23
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-09-06
  Changes: Data collection, Database references, Refinement description