4Q6S | pdb_00004q6s

CFTR Associated Ligand (CAL) PDZ bound to biotinylated peptide BT-L-iCAL36

• PDB DOI: https://doi.org/10.2210/pdb4Q6S/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-04-23 Released: 2015-04-29 
• Deposition Author(s): Amacher, J.F., Madden, D.R.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 
  0.195 (Depositor), 0.190 (DCC) 
• R-Value Work: 
  0.177 (Depositor), 0.170 (DCC) 
• R-Value Observed: 
  0.178 (Depositor) 

Starting Model: experimental

Literature

Modulator Preferences are Critical Co-Determinants of PDZ Network Wiring

Amacher, J.F., Cushing, P.R., Cullati, S.N., Gerber, S.A., Madden, D.R.

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)

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 22.8 kDa 
• Atom Count: 1,882 
• Modeled Residue Count: 206 
• Deposited Residue Count: 206 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Golgi-associated PDZ and coiled-coil motif-containing protein	A, B	87	Homo sapiens	Mutation(s): 0  Gene Names: GOPC, CAL, FIG
UniProt & NIH Common Fund Data Resources
Find proteins for Q9HD26 (Homo sapiens) Explore Q9HD26  Go to UniProtKB:  Q9HD26
PHAROS:  Q9HD26 GTEx:  ENSG00000047932

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
BT-L-iCAL36 peptide	C, D	16	N/A	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free:  0.195 (Depositor), 0.190 (DCC) 
• R-Value Work:  0.177 (Depositor), 0.170 (DCC) 
• R-Value Observed: 0.178 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 36.599	α = 90
b = 48.167	β = 90
c = 101.166	γ = 90

Software Package:

Software Name	Purpose
Blu-Ice	data collection
PHENIX	model building
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-04-29 
Deposition Author(s): Amacher, J.F., Madden, D.R.

Revision History  

• Version 1.0: 2015-04-29
  Type: Initial release
  
• Version 1.1: 2017-11-22
  Changes: Refinement description
• Version 1.2: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description