>7ps1_B mol:protein length:214 Beta-27 Fab light chain
DIQMTQSPGTLSLSPGERATLSCRASQSVSSSSLAWYQQKHGQAPRLLIYGTSSRATGIPDRFSGSGSGTDFTLTISGLEPEDFAVYYCQQYGSSPLFGGGTKVEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC