>3AHS_1|Chains A, B, C|Ribonuclease U2|Ustilago sphaerogena (5271) CDIPQSTNCGGNVYSNDDINTAIQGALDDVADGDRPDNYPHQYYDEASEDITLCCGSGPWSEFPLVYNGPYYSSRDNYVSPGPDRVIYQTNTGEFCATVTHTGAASYDGFTQCS