6AY8 | pdb_00006ay8

Cartilage homing cysteine-dense-peptides

• PDB DOI: https://doi.org/10.2210/pdb6AY8/pdb

• Classification: TOXIN
• Organism(s): Olivierus martensii
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2017-09-07 Released: 2018-08-22 
• Deposition Author(s): Gewe, M.M., Strong, R.K., Watson, A.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.78 Å
• R-Value Free: 
  0.165 (Depositor), 0.162 (DCC) 
• R-Value Work: 
  0.110 (Depositor), 0.123 (DCC) 
• R-Value Observed: 
  0.113 (Depositor) 

Starting Model: experimental

Literature

Cartilage homing cysteine-dense-peptides

Gewe, M.M.

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: 4.53 kDa 
• Atom Count: 338 
• Modeled Residue Count: 40 
• Deposited Residue Count: 40 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium channel toxin alpha-KTx 15.8	A	40	Olivierus martensii	Mutation(s): 0
UniProt
Find proteins for Q86BX0 (Olivierus martensii) Explore Q86BX0  Go to UniProtKB:  Q86BX0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A], C [auth A], D [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.78 Å
• R-Value Free:  0.165 (Depositor), 0.162 (DCC) 
• R-Value Work:  0.110 (Depositor), 0.123 (DCC) 
• R-Value Observed: 0.113 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 20.24	α = 90
b = 34.927	β = 90
c = 36.977	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2018-08-22 
Deposition Author(s): Gewe, M.M., Strong, R.K., Watson, A.

Revision History  

• Version 1.0: 2018-08-22
  Type: Initial release
  
• Version 1.1: 2023-10-04
  Changes: Data collection, Database references, Refinement description
• Version 1.2: 2024-11-06
  Changes: Structure summary