1QPF

FK506 BINDING PROTEIN (12 KDA, HUMAN) COMPLEX WITH L-709,858

• PDB DOI: https://doi.org/10.2210/pdb1QPF/pdb

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


• Deposited: 1999-05-24 Released: 1999-08-16 
• Deposition Author(s): Becker, J.W., Rotonda, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.310 
• R-Value Work: 0.243 
• R-Value Observed: 0.243 

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 generated by PISA (software)

Biological Assembly 3  

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

Biological assembly 3 generated by PQS (software)

Biological Assembly 4  

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

Biological assembly 4 generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 25.82 kDa 
• Atom Count: 1,874 
• Modelled Residue Count: 214 
• Deposited Residue Count: 214 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (FK506-BINDING PROTEIN)	A, B [auth D]	107	Homo sapiens	Mutation(s): 0
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 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
858	C [auth A], E [auth D]	C32-O-(1-ETHYL-INDOL-5-YL)ASCOMYCIN C53 H78 N2 O12 CXVGRMOIFTUTMT-IUQQQLKSSA-N
B7G	D [auth A]	heptyl beta-D-glucopyranoside C13 H26 O6 NIDYWHLDTIVRJT-UJPOAAIJSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
858	PDBBind:  1QPF	IC50: 27 (nM) from 1 assay(s)
	Binding MOAD:  1QPF	IC50: 27 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.310 
• R-Value Work: 0.243 
• R-Value Observed: 0.243 
• Space Group: P 6₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.26	α = 90
b = 74.26	β = 90
c = 236.45	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-GEN	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-08-16 
Deposition Author(s): Becker, J.W., Rotonda, J.

Revision History  

• Version 1.0: 1999-08-16
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2017-10-04
  Changes: Refinement description
• Version 1.4: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary
• Version 1.5: 2023-08-16
  Changes: Data collection, Database references, Refinement description, Structure summary