Decades: 1200s 1210s 1220s 1230s 1240s - 1250s - 1260s 1270s 1280s 1290s 1300s
Years: 1253 1254 1255 1256 1257 - 1258 - 1259 1260 1261 1262 1263
Births
Deaths
... the chlorophyll core of photosystem II, exciting two electrons which are transferred to the primary acceptor protein. The deficit of electrons is made up for by taking ...