2Z7F

Crystal structure of the complex of human neutrophil elastase with 1/2SLPI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Complex of human neutrophil elastase with 1/2SLPI

Koizumi, M.Fujino, A.Fukushima, K.Kamimura, T.Takimoto-Kamimura, M.

(2008) J.SYNCHROTRON RADIAT. 15: 308-311

  • DOI: 10.1107/S0909049507060670

  • PubMed Abstract: 
  • SLPI (secretory leukocyte protease inhibitor) is a 107-residue non-glycosylated protease inhibitor, which inhibits a wide range of serine proteases, trypsin, chymotrypsin, neutrophil elastase, chymase and cathepsin G. X-ray crystallographic analyses ...

    SLPI (secretory leukocyte protease inhibitor) is a 107-residue non-glycosylated protease inhibitor, which inhibits a wide range of serine proteases, trypsin, chymotrypsin, neutrophil elastase, chymase and cathepsin G. X-ray crystallographic analyses have shown that SLPI comprises two separate domains of similar architecture [Grütter, Fendrich, Huber & Bode (1988), EMBO J. 7, 345-351] and the C-terminal domain interacts with bovine alpha-chymotrypsin. In order to understand SLPI's multiple functions against various serine proteases, the complex HNE (human neutrophil elastase) has been co-crystallized with 1/2SLPI (recombinant C-terminal domain of SLPI; Arg58-Ala107), which has a biological activity similar to full SLPI. The 1/2SLPI and HNE complex structure was solved at 1.7 A resolution, and compared with the interaction mechanism of elafin, which is a specific inhibitor of elastase. It was found that P1 Leu72i and six hydrogen bonds between the main chains in the primary contact region have sufficient ability to inhibit HNE and PPE (porcine pancreatic elastase), and P5 Tyr68i is important in increasing the selectivity of 1/2SLPI against HNE. The mechanisms of the functions of SLPI are relatively unknown, but the current study could help understand the selectivity of SLPI against HNE and PPE.


    Organizational Affiliation

    Teijin Institute for Bio-medical Research, Asahigaoka, Hino, Tokyo 191-8512, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Leukocyte elastase
E
218Homo sapiensMutation(s): 0 
Gene Names: ELANE (ELA2)
EC: 3.4.21.37
Find proteins for P08246 (Homo sapiens)
Go to Gene View: ELANE
Go to UniProtKB:  P08246
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Antileukoproteinase
I
50Homo sapiensMutation(s): 0 
Gene Names: SLPI (WAP4, WFDC4)
Find proteins for P03973 (Homo sapiens)
Go to Gene View: SLPI
Go to UniProtKB:  P03973
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FUC
Query on FUC

Download SDF File 
Download CCD File 
E
ALPHA-L-FUCOSE
C6 H12 O5
SHZGCJCMOBCMKK-SXUWKVJYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
E
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.203 
  • Space Group: P 4 21 2
Unit Cell:
Length (Å)Angle (°)
a = 106.638α = 90.00
b = 106.638β = 90.00
c = 55.117γ = 90.00
Software Package:
Software NamePurpose
CrystalCleardata scaling
MOLREPphasing
CrystalCleardata reduction
CrystalCleardata collection
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-08-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance