>2n2k_A mol:protein length:76 ubiquitin MQIFVKTLTGKTITLEVEPSDTIECVKAKIQDKEGIPPDQQRLIFAGCQLEDGRTLSDY NIQKESTLHLVLRLRGG >2n2k_B mol:protein length:71 ubiquitin MQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDY NIQKESTLHLVL >2n2k_B mol:protein length:71 ubiquitin MQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDY NIQKESTLHLVL