9J88 | pdb_00009j88

Structures and mechanisms of serine protease inhibitors of Trichinella spiralis and Trichinella pseudospiralis

• PDB DOI: https://doi.org/10.2210/pdb9J88/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Trichinella spiralis
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-08-20 Released: 2025-09-03 
• Deposition Author(s): Chen, C., Xue, L.R.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.34 Å
• R-Value Free: 
  0.287 (Depositor), 0.288 (DCC) 
• R-Value Work: 
  0.223 (Depositor), 0.224 (DCC) 
• R-Value Observed: 
  0.226 (Depositor) 

Starting Model: experimental

Literature

Structures and mechanisms of serine protease inhibitors of Trichinella spiralis and Trichinella pseudospiralis

Chen, C., Xue, L.R.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 84.92 kDa 
• Atom Count: 5,346 
• Modeled Residue Count: 658 
• Deposited Residue Count: 746 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine proteinase inhibitor	A [auth B], B [auth A]	373	Trichinella spiralis	Mutation(s): 0  Gene Names: SERPINB9, T01_4475
UniProt
Find proteins for Q9NH65 (Trichinella spiralis) Explore Q9NH65  Go to UniProtKB:  Q9NH65

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.34 Å
• R-Value Free:  0.287 (Depositor), 0.288 (DCC) 
• R-Value Work:  0.223 (Depositor), 0.224 (DCC) 
• R-Value Observed: 0.226 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.547	α = 90
b = 71.626	β = 90
c = 143.699	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-09-03 
Deposition Author(s): Chen, C., Xue, L.R.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2025-09-03
  Type: Initial release