8SW0

Puromycin sensitive aminopeptidase

  • Classification: HYDROLASE
  • Organism(s): Homo sapiens
  • Expression System: Spodoptera frugiperda
  • Mutation(s): No 

  • Deposited: 2023-05-17 Released: 2023-07-26 
  • Deposition Author(s): Rodgers, D.W., Sampath, S.
  • Funding Organization(s): National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.224 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structure of puromycin-sensitive aminopeptidase and polyglutamine binding.

Madabushi, S.Chow, K.M.Song, E.S.Goswami, A.Hersh, L.B.Rodgers, D.W.

(2023) PLoS One 18: e0287086-e0287086

  • DOI: https://doi.org/10.1371/journal.pone.0287086
  • Primary Citation of Related Structures:  
    8SW0, 8SW1

  • PubMed Abstract: 

    Puromycin-sensitive aminopeptidase (E.C. 3.4.11.14, UniProt P55786), a zinc metallopeptidase belonging to the M1 family, degrades a number of bioactive peptides as well as peptides released from the proteasome, including polyglutamine. We report the crystal structure of PSA at 2.3 Ǻ. Overall, the enzyme adopts a V-shaped architecture with four domains characteristic of the M1 family aminopeptidases, but it is in a less compact conformation compared to most M1 enzymes of known structure. A microtubule binding sequence is present in a C-terminal HEAT repeat domain of the enzyme in a position where it might serve to mediate interaction with tubulin. In the catalytic metallopeptidase domain, an elongated active site groove lined with aromatic and hydrophobic residues and a large S1 subsite may play a role in broad substrate recognition. The structure with bound polyglutamine shows a possible interacting mode of this peptide, which is supported by mutation.


  • Organizational Affiliation

    Department of Molecular and Cellular Biochemistry and Center for Structural Biology, University of Kentucky, Lexington, Kentucky, United States of America.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Puromycin-sensitive aminopeptidase902Homo sapiensMutation(s): 0 
Gene Names: NPEPPSPSA
EC: 3.4.11.14
UniProt & NIH Common Fund Data Resources
Find proteins for P55786 (Homo sapiens)
Explore P55786 
Go to UniProtKB:  P55786
PHAROS:  P55786
GTEx:  ENSG00000141279 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP55786
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.224 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.684α = 90
b = 257.715β = 90
c = 60.387γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United StatesNS38041
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM130954
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)United StatesDA02243

Revision History  (Full details and data files)

  • Version 1.0: 2023-07-26
    Type: Initial release