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X-ray structures of two forms of the antibiotic oligomycin A: An inhibitor of ATP synthase

Palmer, RA, Ladd, M, Howlin, B and Lisgarten, DR (2013) X-ray structures of two forms of the antibiotic oligomycin A: An inhibitor of ATP synthase Future Medicinal Chemistry, 5 (8). pp. 881-893.

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Abstract

Background: Corrections to the chemical and x-ray structures of two forms of the antibiotic oligomycin A are presented: the original and best known, form (E), from Streptomyces diastatochromogenes, and a new form (C) from Streptomyces diastaticus. Method: The crystal structures are isomorphous, crystallizing in space group P222, with Z = 4[C HO.CHOH] per unit cell. Oligomycin A(E) refined with R1 = 0.0734, using Cu Kα x-radiation; and for Oligomycin A(C) R1 = 0.0651 using Mo Kα x-radiation. Conclusion: Serious corrections to the previously published structure of oligomycin A(C) are discussed and implemented. As a supplementary study geometry optimization of side group R4 of oligomycin A(E) was undertaken and achieved by energy minimization. These additional results clearly confirm the delocalization in this region observed in both x-ray structures. This result is contrary to the generally accepted formulation. Knowledge of the correct structures is important to those involved in the study and applications of the pharmacological and biological properties of these materials. © 2013 Future Science Ltd.

Item Type: Article
Authors :
AuthorsEmailORCID
Palmer, RAUNSPECIFIEDUNSPECIFIED
Ladd, MUNSPECIFIEDUNSPECIFIED
Howlin, BUNSPECIFIEDUNSPECIFIED
Lisgarten, DRUNSPECIFIEDUNSPECIFIED
Date : May 2013
Identification Number : https://doi.org/10.4155/fmc.13.68
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 13:48
Last Modified : 28 Mar 2017 13:48
URI: http://epubs.surrey.ac.uk/id/eprint/780668

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