<Table> <Tr> <Td_colspan="2"> Light - Harvesting Complex II </Td> </Tr> <Tr> <Th_colspan="2"> Identifiers </Th> </Tr> <Tr> <Th> Symbol </Th> <Td> Chloroa_b - bind </Td> </Tr> <Tr> <Th> Pfam </Th> <Td> PF00504 </Td> </Tr> <Tr> <Th> InterPro </Th> <Td> IPR001344 </Td> </Tr> <Tr> <Th> SCOP </Th> <Td> 1rwt </Td> </Tr> <Tr> <Th> SUPERFAMILY </Th> <Td> 1rwt </Td> </Tr> <Tr> <Th> OPM superfamily </Th> <Td> </Td> </Tr> <Tr> <Th> OPM protein </Th> <Td> 1rwt </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Th_colspan="2"> (show) Available protein structures: </Th> </Tr> <Tr> <Th> Pfam </Th> <Td> structures </Td> </Tr> <Tr> <Th> PDB </Th> <Td> RCSB PDB; PDBe; PDBj </Td> </Tr> <Tr> <Th> PDBsum </Th> <Td> structure summary </Td> </Tr> </Table> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Light - Harvesting Complex II </Td> </Tr>

What is the main role of the antenna pigment molecules located in the thylakoid membranes