>2fcs_A: Ubiquitin LQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEQIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGG >2fcs_B: Ubiquitin LQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEQIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGG