4MSP

Crystal structure of human peptidyl-prolyl cis-trans isomerase FKBP22 (aka FKBP14) containing two EF-hand motifs


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.158 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of human peptidyl-prolyl cis-trans isomerase FKBP22 containing two EF-hand motifs.

Boudko, S.P.Ishikawa, Y.Nix, J.Chapman, M.S.Bachinger, H.P.

(2014) Protein Sci. 23: 67-75

  • DOI: 10.1002/pro.2391

  • PubMed Abstract: 
  • The FK506-binding protein (FKBP) family consists of proteins with a variety of protein-protein interaction domains and versatile cellular functions. It is assumed that all members are peptidyl-prolyl cis-trans isomerases with the enzymatic function a ...

    The FK506-binding protein (FKBP) family consists of proteins with a variety of protein-protein interaction domains and versatile cellular functions. It is assumed that all members are peptidyl-prolyl cis-trans isomerases with the enzymatic function attributed to the FKBP domain. Six members of this family localize to the mammalian endoplasmic reticulum (ER). Four of them, FKBP22 (encoded by the FKBP14 gene), FKBP23 (FKBP7), FKBP60 (FKBP9), and FKBP65 (FKBP10), are unique among all FKBPs as they contain the EF-hand motifs. Little is known about the biological roles of these proteins, but emerging genetics studies are attracting great interest to the ER resident FKBPs, as mutations in genes encoding FKBP10 and FKBP14 were shown to cause a variety of matrix disorders. Although the structural organization of the FKBP-type domain as well as of the EF-hand motif has been known for a while, it is difficult to conclude how these structures are combined and how it affects the protein functionality. We have determined a unique 1.9 Å resolution crystal structure for human FKBP22, which can serve as a prototype for other EF hand-containing FKBPs. The EF-hand motifs of two FKBP22 molecules form a dimeric complex with an elongated and predominantly hydrophobic cavity that can potentially be occupied by an aliphatic ligand. The FKBP-type domains are separated by a cleft and their putative active sites can catalyze isomerazation of two bonds within a polypeptide chain in extended conformation. These structural results are of prime interest for understanding biological functions of ER resident FKBPs containing EF-hand motifs.


    Organizational Affiliation

    Research Department, Shriners Hospital for Children, Portland, Oregon, 97239; Department of Biochemistry and Molecular Biology, Oregon Health and Science University, Portland, Oregon, 97239.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Peptidyl-prolyl cis-trans isomerase FKBP14
A, B
200Homo sapiensMutation(s): 0 
Gene Names: FKBP14 (FKBP22)
EC: 5.2.1.8
Find proteins for Q9NWM8 (Homo sapiens)
Go to Gene View: FKBP14
Go to UniProtKB:  Q9NWM8
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
1PE
Query on 1PE

Download SDF File 
Download CCD File 
A
PENTAETHYLENE GLYCOL
PEG400
C10 H22 O6
JLFNLZLINWHATN-UHFFFAOYSA-N
 Ligand Interaction
PGO
Query on PGO

Download SDF File 
Download CCD File 
A, B
S-1,2-PROPANEDIOL
C3 H8 O2
DNIAPMSPPWPWGF-VKHMYHEASA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.158 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 36.430α = 90.00
b = 101.200β = 100.01
c = 58.970γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
PHENIXrefinement
AMoREphasing
Blu-Icedata collection
MOSFLMdata reduction
JBluIce-EPICSdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-12-25
    Type: Initial release
  • Version 1.1: 2014-02-05
    Type: Database references
  • Version 1.2: 2017-11-15
    Type: Refinement description