4MTB

Bovine trypsin in complex with small molecule inhibitor

• PDB DOI: https://doi.org/10.2210/pdb4MTB/pdb

• Classification: HYDROLASE/HYDROLASE INHIBITOR
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 2013-09-19 Released: 2014-12-24 
• Deposition Author(s): Wagner, S., Heine, A., Steinmetzer, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.22 Å
• R-Value Free: 0.164 
• R-Value Work: 0.135 
• R-Value Observed: 0.137 

Starting Model: experimental

Literature

X-ray structure of trypsin-inhibitor-complex

Wagner, S., Heine, A., Steinmetzer, T.

To be published.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 23.83 kDa 
• Atom Count: 2,029 
• Modelled Residue Count: 223 
• Deposited Residue Count: 223 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cationic trypsin	A	223	Bos taurus	Mutation(s): 0  EC: 3.4.21.4
UniProt
Find proteins for P00760 (Bos taurus) Explore P00760  Go to UniProtKB:  P00760

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BZY	C [auth A]	(2R)-2-amino-N-{(2S)-1-[(4-carbamimidoylbenzyl)amino]-1-oxopropan-2-yl}-4-(4-hydroxyphenyl)butanamide C21 H27 N5 O3 GVEMEQSTGJKMAX-SCLBCKFNSA-N
IMD	D [auth A]	IMIDAZOLE C3 H5 N2 RAXXELZNTBOGNW-UHFFFAOYSA-O
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.22 Å
• R-Value Free: 0.164 
• R-Value Work: 0.135 
• R-Value Observed: 0.137 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.959	α = 90
b = 54.959	β = 90
c = 108.059	γ = 120

Software Package:

Software Name	Purpose
MAR345dtb	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-12-24 
Deposition Author(s): Wagner, S., Heine, A., Steinmetzer, T.

Revision History  

• Version 1.0: 2014-12-24
  Type: Initial release
  
• Version 1.1: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.2: 2024-10-30
  Changes: Structure summary