1A7X

FKBP12-FK1012 COMPLEX

• PDB DOI: https://doi.org/10.2210/pdb1A7X/pdb

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


• Deposited: 1998-03-18 Released: 1998-06-17 
• Deposition Author(s): Schultz, L.W., Clardy, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å

Starting Model: experimental

Literature

Chemical inducers of dimerization: the atomic structure of FKBP12-FK1012A-FKBP12.

Schultz, L.W., Clardy, J.

(1998) Bioorg Med Chem Lett 8: 1-6

• PubMed: 9871618 
• DOI: https://doi.org/10.1016/s0960-894x(97)10195-0
• Primary Citation of Related Structures:  
  1A7X


• PubMed Abstract: 
  

  A ligand that simultaneously binds two proteins must have two high affinity protein binding domains joined in a fashion that facilitates, or at least does not prevent, protein-protein interaction. Designing such ligands is challenging, and a high resolution X-ray structure of FKBP12-FK1012A-FKBP12 illustrates the subtleties of one successful design.

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Organizational Affiliation: 

Department of Chemistry, Cornell University, Ithaca, NY 14853-1301, USA.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 24.61 kDa 
• Atom Count: 1,915 
• Modelled Residue Count: 214 
• Deposited Residue Count: 214 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FKBP12	A, B	107	Homo sapiens	Mutation(s): 0  EC: 5.2.1.8
UniProt & NIH Common Fund Data Resources
Find proteins for P62942 (Homo sapiens) Explore P62942  Go to UniProtKB:  P62942
PHAROS:  P62942 GTEx:  ENSG00000088832

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FKA	C [auth B]	BENZYL-CARBAMIC ACID [8-DEETHYL-ASCOMYCIN-8-YL]ETHYL ESTER C51 H76 N2 O14 JEQCTALUECDHLT-VQBDMAPKSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
FKA	PDBBind:  1A7X	Kd: 0.2 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 133.59	α = 90
b = 40.51	β = 90
c = 93.13	γ = 90

Software Package:

Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-06-17 
Deposition Author(s): Schultz, L.W., Clardy, J.

Revision History  

• Version 1.0: 1998-06-17
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2011-11-16
  Changes: Atomic model
• Version 1.4: 2023-08-02
  Changes: Database references, Derived calculations, Refinement description
• Version 1.5: 2024-05-22
  Changes: Data collection