>4GHO_1|Chains A, B|Guanyl-specific ribonuclease Sa|Streptomyces aureofaciens (1894) DVSGTVCLSALPPEATDTLNLIAADGPFPYSQDGVVFQNRESVLPTQSYGYYHEYTVITPGARTRGTRRIITGEATQEDYYTGDHYATFSLIDQTC