Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 2.44 kDa 
• Atom Count: 170 
• Modelled Residue Count: 23 
• Deposited Residue Count: 23 
• Unique protein chains: 1

1HRL

STRUCTURE OF A PARALYTIC PEPTIDE FROM AN INSECT, MANDUCA SEXTA

• PDB DOI: 10.2210/pdb1HRL/pdb

• Classification: TOXIN
• Mutation(s): No 


• Deposited: 2000-12-21 Released: 2001-01-10 
• Deposition Author(s): Yu, X.-Q., Prakash, O., Kanost, M.R.

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Experimental Data Snapshot

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

Literature

Structure of a paralytic peptide from an insect, Manduca sexta.

Yu, X.Q., Prakash, O., Kanost, M.R.

(1999) J Pept Res 54: 256-261

• PubMed: 10517164 
• DOI: 10.1034/j.1399-3011.1999.00136.x
• Primary Citation of Related Structures:  
  1HRL


• PubMed Abstract: 
  

Paralytic peptide 1 (PP1) from a moth, Manduca sexta, is a 23-residue peptide (Glu-Asn-Phe-Ala-Gly-Gly-Cys-Ala-Thr-Gly-Tyr-Leu-Arg-Thr-Ala-Asp-Gly-Arg -Cys-Lys-Pro-Thr-Phe) that was first found to have paralytic activity when injected into M. sexta larvae. Recent studies demonstrated that PP1 also stimulated the spreading and aggregation of a blood cell type called plasmatocytes and inhibited bleeding from wounds. We determined the solution structure of PP1 by two-dimensional 1H NMR spectroscopy to begin to understand structural-functional relationships of this peptide. PP1 has an ordered structure, which is composed of a short antiparallel beta-sheet at residues Tyr11-Thr14 and Arg18-Pro21, three beta turns at residues Phe3-Gly6, Ala8-Tyr11 and Thr14-Gly17, and a half turn at the carboxyl-terminus (residues Lys20-Phe23). The well-defined secondary and tertiary structure was stabilized by hydrogen bonding and side-chain hydrophobic interactions. In comparison with two related insect peptides, whose structures have been solved recently, the amino-terminal region of PP1 is substantially more ordered. The short antiparallel beta-sheet of PP1 has a folding pattern similar to the carboxyl-terminal subdomain of epidermal growth factor (EGF). Therefore, PP1 may interact with EGF receptor-like molecules to trigger its different biological activities.

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Organizational Affiliation: 

Department of Biochemistry, Kansas State University, Manhattan 66506, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PARALYTIC PEPTIDE I	A	23	N/A	Mutation(s): 0
UniProt
Find proteins for P30253 (Manduca sexta) Explore P30253  Go to UniProtKB:  P30253

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 10 
• Selection Criteria: structures with the least restraint violations,structures with the lowest energy 
• OLDERADO: 1HRL Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-12-21 
• Released Date: 2001-01-10 
Deposition Author(s): Yu, X.-Q., Prakash, O., Kanost, M.R.

Revision History  

• Version 1.0: 2001-01-10
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-12-20
  Changes: Database references, Derived calculations