9BKG

Crystal structure of selenomethionine labeled bovine trypsin mutant - S195A solved by Sulphur-SAD at 1.54A wavelength

• PDB DOI: https://doi.org/10.2210/pdb9BKG/pdb

• Classification: HYDROLASE
• Organism(s): Bos taurus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2024-04-27 Released: 2024-06-05 
• Deposition Author(s): Zhou, D., Chen, L., Rose, J.P., Wang, B.C.
• Funding Organization(s): Not funded

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.57 Å
• R-Value Free: 0.204 
• R-Value Work: 0.186 
• R-Value Observed: 0.186 

Literature

Crystal structure of selenomethionine labeled bovine trypsin mutant - S195A solved by Sulphur-SAD at 1.54A wavelength

Zhou, D., Chen, L., Rose, J.P., Wang, B.C.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 23.4 kDa 
• Atom Count: 1,701 
• Modelled Residue Count: 197 
• Deposited Residue Count: 223 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine protease 1	A	223	Bos taurus	Mutation(s): 1  Gene Names: PRSS1, TRP1, TRY1, TRYP1 EC: 3.4.21.4
UniProt
Find proteins for P00760 (Bos taurus) Explore P00760  Go to UniProtKB:  P00760

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.57 Å
• R-Value Free: 0.204 
• R-Value Work: 0.186 
• R-Value Observed: 0.186 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.708	α = 90
b = 54.708	β = 90
c = 107.174	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-06-05 
Deposition Author(s): Zhou, D., Chen, L., Rose, J.P., Wang, B.C.

---

Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2024-06-05
  Type: Initial release