Fig. 1 (IMAGE) Osaka University Caption Fission yeast PCNA lysine 107 (K107) is present at the PCNA-PCNA interface. Credit Osaka University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.