_EC 3.1.27.4 Ribonuclease U(2). 5 PDB entries  
EC 3.-.-.- Hydrolases. [21,051 PDB entries]
EC 3.1.-.- Acting on ester bonds. [5,973 PDB entries]
EC 3.1.27.- Endoribonucleases producing other than 5'-phosphomonoesters. [424 PDB entries]
EC 3.1.27.4 Ribonuclease U(2). [5 PDB entries]    
1rtu

Reaction: Two-stage endonucleolytic cleavage to nucleoside 3'-phosphates and 3'-phosphooligonucleotides ending in A-P or G-P with 2',3'-cyclic phosphate intermediates.
Other name(s): Ribonuclease U2.
Links:   [IntEnz]   [ExPASy]   [KEGG]  

There are 5 PDB entries in enzyme class E.C.3.1.27.4

  PDB code Protein
1rtu
Ustilago sphaerogena ribonuclease u2
Source: Ustilago sphaerogena. Organism_taxid: 5271. Atcc: 12421
Chain: A (114 residues) CATH domain: 3.10.450.30
3agn
Crystal structure of ustilago sphaerogena ribonuclease u2 co with adenosine 3'-monophosphate
Source: Ustilago sphaerogena. Smut fungus. Organism_taxid: 5271
Chain: A (114 residues) CATH domain: 3.10.450.30
3ago
Crystal structure of ustilago sphaerogena ribonuclease u2 co with adenosine 3'-monophosphate
Source: Ustilago sphaerogena. Smut fungus. Organism_taxid: 5271
Chain: A (114 residues) CATH domain: 3.10.450.30
3ahs
Crystal structure of ustilago sphaerogena ribonuclease u2b
Source: Ustilago sphaerogena. Smut fungus. Organism_taxid: 5271
Chains: A, B, C (114 residues) CATH domain: 3.10.450.30
3ahw
Crystal structure of ustilago sphaerogena ribonuclease u2 co with adenosine 2'-monophosphate
Source: Ustilago sphaerogena. Smut fungus. Organism_taxid: 5271
Chain: A (114 residues) CATH domain: 3.10.450.30