Volume 188, no. 6, p. 2154-2162, 2006. Page 2154: In column one, second paragraph, the second sentence should read as follows: “Three-dimensional crystal structures have been resolved for one or more of the PAS domains from the Ectothiorhodospira halophila blue light receptor photoactive yellow protein (PYP) (7, 46)… .”
Page 2154: In column two, the fifth complete sentence should read as follows: “Currently identified PAS cofactors include the chromophore 4-hydroxycinnamoyl (PYP), heme (FixL, Ec DOS),… .”