Photoactive Yellow Protein, the Prototype Xanthopsin

Authored by: Johnny Hendriks , Marijke Hospes , Klaas J. Hellingwerf

CRC Handbook of Organic Photochemistry and Photobiology

Print publication date:  March  2012
Online publication date:  March  2012

Print ISBN: 9781439899335
eBook ISBN: 9781466561250
Adobe ISBN:

10.1201/b12252-48

 Download Chapter

 

Abstract

In 1985, several ferredoxins and other chromophoric proteins from the halophilic phototrophic bacterium Ectothiorhodospira halophila were isolated by T. E. Meyer in Tucson, Az. 1 One of the “other chromophoric proteins” he identified in this screen was yellow and was named “photoactive yellow protein” (PYP) in a subsequent study. 2 E. halophila was reclassified in 1996 to its current name Halorhodospira halophila. 3 H. halophila is a unicellular prokaryote, or more specifically, a phototrophic purple spirillum that deposits sulfur extracellularly. It was first isolated and classified from salt-encrusted mud taken from the shores of Summer Lake, Lake County, Oregon. 4,5 Later, it was also isolated from the extremely saline lakes of the Wadi el Natrun in Egypt. 6 Both locations are salt lakes, and indeed, H. halophila only thrives in extremely salty environments.

 Cite
Search for more...
Back to top

Use of cookies on this website

We are using cookies to provide statistics that help us give you the best experience of our site. You can find out more in our Privacy Policy. By continuing to use the site you are agreeing to our use of cookies.