8BWF_1|Chains A, AA[auth B], C, CA[auth D], E, EA[auth F], G, I[auth H], K[auth I], M[auth J], O[auth K], Q[auth L], S[auth M], U[auth N], W[auth O], Y[auth P]|Polypyrimidine tract-binding protein 1|Homo sapiens (9606) label=1