TY - GEN AU - Daemen,F J AU - Bonting,S L TI - Internal protonation in retinylidene phosphatidylethanolamine and the red-shift in rhodopsin SN - 0028-0836 PY - 1969///0703 KW - Color KW - Models, Chemical KW - Phosphatidylethanolamines KW - Retinal Pigments KW - Spectrum Analysis N1 - Publication Type: Journal Article UR - https://doi.org/10.1038/222879a0 ER -