6EAX

Crystallographic structure of the cyclic hexapeptide derived from the BTCI inhibitor bound to beta-trypsin in space group P 21 21 21

• PDB DOI: https://doi.org/10.2210/pdb6EAX/pdb

• Classification: hydrolase/hydrolase inhibitor
• Organism(s): Bos taurus, Vigna unguiculata
• Mutation(s): No 


• Deposited: 2018-08-03 Released: 2019-08-07 
• Deposition Author(s): Fernandes, J.C., Valadares, N.F., Freitas, S.M., Barbosa, J.A.R.G.
• Funding Organization(s): Brazilian National Council for Scientific and Technological Development (CNPq)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.19 Å
• R-Value Free: 0.156 
• R-Value Work: 0.143 
• R-Value Observed: 0.143 

Starting Model: experimental

Literature

Crystallographic structure of the cyclic hexapeptide derived from the BTCI inhibitor bound to beta-trypsin in space group P 21 21 21

Fenandes, J.F., Valadares, N.F., Freitas, S.M., Barbosa, J.A.R.G.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 24.18 kDa 
• Atom Count: 2,090 
• Modelled Residue Count: 229 
• Deposited Residue Count: 229 
• Unique protein chains: 2

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

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
CYS-THR-LYS-SER-ILE-CYS	B [auth I]	6	Vigna unguiculata	Mutation(s): 0
UniProt
Find proteins for P17734 (Vigna unguiculata) Explore P17734  Go to UniProtKB:  P17734

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
J3D	D [auth A]	N-carboxy-L-cysteine C4 H7 N O4 S ZJMMJMHTXLTBFW-REOHCLBHSA-N
CA	C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.19 Å
• R-Value Free: 0.156 
• R-Value Work: 0.143 
• R-Value Observed: 0.143 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 61.585	α = 90
b = 63.544	β = 90
c = 68.754	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2019-08-07 
Deposition Author(s): Fernandes, J.C., Valadares, N.F., Freitas, S.M., Barbosa, J.A.R.G.

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Funding Organization	Location	Grant Number
Brazilian National Council for Scientific and Technological Development (CNPq)	Brazil	309054/2014-1

Revision History  

• Version 1.0: 2019-08-07
  Type: Initial release
  
• Version 1.1: 2020-01-08
  Changes: Author supporting evidence
• Version 1.2: 2023-10-11
  Changes: Data collection, Database references, Refinement description
• Version 2.0: 2023-11-15
  Changes: Atomic model, Data collection