9HU7 | pdb_00009hu7

Mutant M298C6a of the small laccase (SLAC) from Streptomyces coelicolor

• PDB DOI: https://doi.org/10.2210/pdb9HU7/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Streptomyces coelicolor
• Expression System: Escherichia coli B
• Mutation(s): Yes 


• Deposited: 2024-12-20 Released: 2026-01-14 
• Deposition Author(s): Fischer, S., Natter Perdiguero, A., Lau, K., Deliz Liang, A.
• Funding Organization(s): University of Zurich

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.51 Å
• R-Value Free: 
  0.218 (Depositor), 0.218 (DCC) 
• R-Value Work: 
  0.205 (Depositor), 0.205 (DCC) 
• R-Value Observed: 
  0.205 (Depositor) 

Starting Model: in silico

Literature

Hydrophobic tuning with non-canonical amino acids in a copper metalloenzyme

Fischer, S., Natter Perdiguero, A., Lau, K., Deliz Liang, A.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Biological Assembly Evidence: homology

Macromolecule Content 

• Total Structure Weight: 35.4 kDa 
• Atom Count: 2,149 
• Modeled Residue Count: 277 
• Deposited Residue Count: 322 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Copper oxidase	A	322	Streptomyces coelicolor	Mutation(s): 1  Gene Names: SCO6712, SC4C6.22
UniProt
Find proteins for Q9XAL8 (Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145)) Explore Q9XAL8  Go to UniProtKB:  Q9XAL8

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CU (Subject of Investigation/LOI)	B [auth A], C [auth A], D [auth A], E [auth A]	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
ALC	A	L-PEPTIDE LINKING	C9 H17 N O2		ALA

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.51 Å
• R-Value Free:  0.218 (Depositor), 0.218 (DCC) 
• R-Value Work:  0.205 (Depositor), 0.205 (DCC) 
• R-Value Observed: 0.205 (Depositor) 

Space Group: P 4₃ 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 178.755	α = 90
b = 178.755	β = 90
c = 178.755	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-01-14 
Deposition Author(s): Fischer, S., Natter Perdiguero, A., Lau, K., Deliz Liang, A.

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Funding Organization	Location	Grant Number
University of Zurich	Switzerland	--

Revision History  

• Version 1.0: 2026-01-14
  Type: Initial release