>1RQF_1|Chains A, B, C[auth D], D[auth E], E[auth G], F[auth H], G[auth J], H[auth K]|Casein kinase II beta chain|Xenopus laevis (8355) GSPGIQMSSSEEVSWISWFCGLRGNEFFCEVDEDYIQDKFNLTGLNEQVPHYRQALDMILDLEPDEELEDNPNQSDLIEQAAEMLYGLIHARYILTNRGIAQMLEKYQQGDFGYCPRVYCENQPMLPIGLSDIPGEAMVKLYCPKCMDVYTPKSSRHHHTDGAYFGTGFPHMLFMVHPEYRPKR >1RQF_4|Chains L[auth P], M[auth S]|Disordered segment of Cyclin-dependent kinase inhibitor 1|null XXX >1RQF_2|Chains I[auth M], J[auth N], N[auth T]|Disordered segment of Cyclin-dependent kinase inhibitor 1|null XXXX >1RQF_3|Chain K[auth O]|Disordered segment of Cyclin-dependent kinase inhibitor 1|null XXXXXXXX