9D1J | pdb_00009d1j

The alpha-E7 carboxylesterase from Cochliomyia hominivorax

• PDB DOI: https://doi.org/10.2210/pdb9D1J/pdb

• Classification: HYDROLASE
• Organism(s): Cochliomyia hominivorax
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-08-07 Released: 2025-08-13 
• Deposition Author(s): Frkic, R.L., Fraser, N., Mabbitt, P.D., Jackson, C.J.
• Funding Organization(s): Australian Research Council (ARC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.03 Å
• R-Value Free: 
  0.240 (Depositor), 0.238 (DCC) 
• R-Value Work: 
  0.198 (Depositor), 0.197 (DCC) 
• R-Value Observed: 
  0.200 (Depositor) 

Starting Model: in silico

Literature

The alpha-E7 carboxylesterase from Cochliomyia hominivorax

Frkic, R.L., Fraser, N., Correy, G., Mabbitt, P.D., Jackson, C.J.

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: 65.47 kDa 
• Atom Count: 4,692 
• Modeled Residue Count: 569 
• Deposited Residue Count: 570 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carboxylic ester hydrolase	A	570	Cochliomyia hominivorax	Mutation(s): 0  Gene Names: ChaE7 EC: 3.1.1
UniProt
Find proteins for C5IWW7 (Cochliomyia hominivorax) Explore C5IWW7  Go to UniProtKB:  C5IWW7

Small Molecules

Modified Residues  3 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MLY	A	L-PEPTIDE LINKING	C8 H18 N2 O2		LYS
MLZ	A	L-PEPTIDE LINKING	C7 H16 N2 O2		LYS
SEP	A	L-PEPTIDE LINKING	C3 H8 N O6 P		SER

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.03 Å
• R-Value Free:  0.240 (Depositor), 0.238 (DCC) 
• R-Value Work:  0.198 (Depositor), 0.197 (DCC) 
• R-Value Observed: 0.200 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 59.572	α = 90
b = 92.559	β = 90
c = 106.076	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-08-13 
Deposition Author(s): Frkic, R.L., Fraser, N., Mabbitt, P.D., Jackson, C.J.

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Funding Organization	Location	Grant Number
Australian Research Council (ARC)	Australia	CE200100012
Australian Research Council (ARC)	Australia	CE200100029

Revision History  

• Version 1.0: 2025-08-13
  Type: Initial release