>1GSX_1|Chain A|PHOTOACTIVE YELLOW PROTEIN|ECTOTHIORHODOSPIRA HALOPHILA (1053) MEHVAFGSEDIENTLAKMDDGQLDGLAFGAIQLDGDGNILQYNAAESDITSRDPKQVIGKNFFKDVAPCTDSPEFYGKFKEGVASGNLNTMFEYTFDYQMTPTKVKVHMKKALSGDSYWVFVKRV