2N17

NMR structure of a Kazal-type serine protease inhibitor from the subterranean termite defense gland of Coptotermes formosanus Shiraki soldiers


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A Kazal-Type Serine Protease Inhibitor from the Defense Gland Secretion of the Subterranean Termite Coptotermes formosanus Shiraki.

Negulescu, H.Guo, Y.Garner, T.P.Goodwin, O.Y.Henderson, G.Laine, R.A.Macnaughtan, M.A.

(2015) Plos One 10: e0125376-e0125376

  • DOI: 10.1371/journal.pone.0125376

  • PubMed Abstract: 
  • Coptotermes formosanus is an imported, subterranean termite species with the largest economic impact in the United States. The frontal glands of the soldier caste termites comprising one third of the body mass, contain a secretion expelled through a ...

    Coptotermes formosanus is an imported, subterranean termite species with the largest economic impact in the United States. The frontal glands of the soldier caste termites comprising one third of the body mass, contain a secretion expelled through a foramen in defense. The small molecule composition of the frontal gland secretion is well-characterized, but the proteins remain to be identified. Herein is reported the structure and function of one of several proteins found in the termite defense gland secretion. TFP4 is a 6.9 kDa, non-classical group 1 Kazal-type serine protease inhibitor with activity towards chymotrypsin and elastase, but not trypsin. The 3-dimensional solution structure of TFP4 was solved with nuclear magnetic resonance spectroscopy, and represents the first structure from the taxonomic family, Rhinotermitidae. Based on the structure of TFP4, the protease inhibitor active loop (Cys(8) to Cys(16)) was identified.


    Organizational Affiliation

    Department of Biological Sciences, Division of Biochemistry and Molecular Biology, Louisiana State University and A&M College, Baton Rouge, LA 70803, United States of America.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lysozyme-Protease Inhibitor Protein
A
75Coptotermes formosanusN/A
Find proteins for V9GZ93 (Coptotermes formosanus)
Go to UniProtKB:  V9GZ93
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-05-06
    Type: Initial release
  • Version 1.1: 2015-05-27
    Type: Database references