>1YNV_1|Chain A[auth X]|Guanyl-specific ribonuclease Sa|Streptomyces aureofaciens (1894) DVSGTVCLSALPPEATDTLNLIASDGPFPYSQDGVVFQNRESVLPTQSYGYYHEYTVITPGARTRGTRRIITGEATQEDYYTGDHYATFSLIDKTC