Abstract: The electron transfer between cytochrome c and several water-soluble porphyrins (ZnTPPS, ZnTMPyP, ZnTPPC, H2TPPS, and H, TMPyP where TPPS is tetrakis (sulfonatophenyl) prphyrin, TMPyP is tetrakis (N-methylpyridyl) porphyrin, and TPPC is tetrakis (carboxypheny1) porphyrin) has been studied by the method of photoexcitation. For each porphyrin, two rates corresponding to electron transfer from porphyrin triplet to ...