Morliere P, Mangel W F, Santus R, Huppe G, Reyftmann J P, Kohen E
Biochem Biophys Res Commun. 1987 Jul 15;146(1):107-13. doi: 10.1016/0006-291x(87)90697-8.
Rhodamines 110 and 123, and rhodamine 110 linked via peptide bonds to Arg, Cbz-Arg and Cbz-Ile-Pr-Arg interact with free base porphyrins or cytochrome C. Rhodamines 110 and 123 essentially form 1:1 complexes while the other derivatives form 2:1 complexes. The possible biological implications of these results are discussed.