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Applied and Environmental Microbiology, September 2006, p. 6367-6370, Vol. 72, No. 9
0099-2240/06/$08.00+0     doi:10.1128/AEM.00756-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Granadaene: Proposed Structure of the Group B Streptococcus Polyenic Pigment

Manuel Rosa-Fraile,1* Javier Rodríguez-Granger,1 Ali Haidour-Benamin,2 Juan Manuel Cuerva,3 and Antonio Sampedro1

Microbiology Service, Virgen de las Nieves University Hospital, 18014 Granada, Spain,1 Scientific Instrumentation Center, Granada University, Granada, Spain,2 Department of Organic Chemistry, Granada University, Granada, Spain3

Received 31 March 2006/ Accepted 27 June 2006

The goal of this work was to determine the chemical nature of the red pigment produced by Streptococcus agalactiae, which has been thought to be a carotene. We extracted the pigment with 0.1 M KOH and purified it by column chromatography on Sephadex LH. Data from elemental analysis and mass and nuclear magnetic resonance spectra lead us to propose the structure to be that of a new ornithine rhamno-polyene with 12 conjugated double bonds, to which we have assigned the trivial name granadaene.

* Corresponding author. Mailing address: Servicio de Microbiología, Hospital Virgen de las Nieves, 18014 Granada, Spain. Phone: 34-958-020010. Fax: 34-958-020169. E-mail: manuel.rosa.sspa{at}juntadeandalucia.es.

Applied and Environmental Microbiology, September 2006, p. 6367-6370, Vol. 72, No. 9
0099-2240/06/$08.00+0     doi:10.1128/AEM.00756-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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