<Tr> <Th> Pfam </Th> <Td> PF00421 </Td> </Tr> <Tr> <Th> InterPro </Th> <Td> IPR000932 </Td> </Tr> <Tr> <Th> TCDB </Th> <Td> 3. E. 2 </Td> </Tr> <Tr> <Th> OPM superfamily </Th> <Td> </Td> </Tr>

Where do the electrons for photosystem ii come from