2LQA

Solution NMR structure of Asteropsin A from marine sponge Asteropus sp.

• PDB DOI: https://doi.org/10.2210/pdb2LQA/pdb
• BMRB: 18300

• Classification: TOXIN
• Organism(s): Asteropus
• Mutation(s): No 


• Deposited: 2012-02-28 Released: 2013-02-06 
• Deposition Author(s): Li, H., Bowling, J.J., Hamann, M.T., Jung, J.H.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Asteropsin A: An unusual cystine-crosslinked peptide from porifera enhances neuronal Ca(2+) influx

Li, H., Bowling, J.J., Fronczek, F.R., Hong, J., Jabba, S.V., Murray, T.F., Ha, N.C., Hamann, M.T., Jung, J.H.

(2012) Biochim Biophys Acta 1830: 2591-2599

• PubMed: 23201194 
• DOI: https://doi.org/10.1016/j.bbagen.2012.11.015
• Primary Citation of Related Structures:  
  2LQA


• PubMed Abstract: 
  

  Herein we report the discovery of a cystine-crosslinked peptide from Porifera along with high-quality spatial details accompanied by the description of its unique effect on neuronal calcium influx.

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Organizational Affiliation: 

College of Pharmacy, Pusan National University, Busan 609-735, Korea. [e-mail]

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 3.9 kDa 
• Atom Count: 270 
• Modelled Residue Count: 37 
• Deposited Residue Count: 37 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Asteropsin A	A	37	Asteropus	Mutation(s): 0
UniProt
Find proteins for I1SB10 (Asteropus) Explore I1SB10  Go to UniProtKB:  I1SB10

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PCA	A	L-PEPTIDE LINKING	C5 H7 N O3		GLN

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-02-06 
Deposition Author(s): Li, H., Bowling, J.J., Hamann, M.T., Jung, J.H.

Revision History  

• Version 1.0: 2013-02-06
  Type: Initial release
  
• Version 2.0: 2019-12-25
  Changes: Derived calculations, Polymer sequence
• Version 2.1: 2023-06-14
  Changes: Database references, Other