ISDA

Entry Detail

PDB ID:

9BHN

Keywords:

Title:

Solution NMR structure of halichondamide A, a fused bicyclic cysteine knot undecapeptide from the marine sponge Halichondria bowerbanki

Biological Source:

Source Organism:

Halichondria bowerbanki

PDB Version:

Deposition Date:

2024-04-21

Release Date:

2024-08-21

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

200

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

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Macromolecular Entities

Polymer Type:polypeptide(L)
Description:Halichondamide A
Chain IDs:A
Chain Length:11
Number of Molecules:1
Biological Source:Halichondria bowerbanki

Ligand Molecules

Primary Citation

Discovery and Folding Dynamics of a Fused Bicyclic Cysteine Knot Undecapeptide from the Marine Sponge Halichondria bowerbanki.

Zhong, W, Olugbami, J.O, Rathakrishnan, P, Mohanty, I, Moore, S.G, Garg, N, Oyelere, A.K, Turner, T.L, McShan, A.C, Agarwal, V.Show

J.Org.Chem. 89 12748 12752 (2024)

PMID: 39189383 DOI: 10.1021/acs.joc.4c01104

Abstact

We describe the discovery and structure of an undecapeptide natural product from a marine sponge, termed halichondamide A, that is morphed into a fused bicyclic ring topology via two disulfide bonds. Molecular dynamics simulations allow us to posit that the installation of one disulfide bond biases the intermediate peptide conformation and predisposes the formation of the second disulfide bond. The natural product was found to be mildly cytotoxic against liver and breast cancer cell lines.

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