5jne

Structural highlights

Function

[PCNA_YEAST] This protein is an auxiliary protein of DNA polymerase delta and is involved in the control of eukaryotic DNA replication by increasing the polymerase's processibility during elongation of the leading strand. Involved in DNA repair.^{[1] [2]} [SIZ1_YEAST] Acts as an E3 ligase mediating SUMO/Smt3 attachment to septins and PCNA. May be involved in chromosome maintenance.^{[3] [4] [5] [6] [7]} [SMT3_YEAST] Not known; suppressor of MIF2 mutations. [UBC9_YEAST] E2 ubiquitin-like--protein ligase mediating SUMO/Smt3 attachment to septins and PCNA. Seems to be involved in degradation of S- (CLB5) and M-phase cyclins (CLB2).^{[8] [9]}

References

1. ↑ Haracska L, Kondratick CM, Unk I, Prakash S, Prakash L. Interaction with PCNA is essential for yeast DNA polymerase eta function. Mol Cell. 2001 Aug;8(2):407-15. PMID:11545742
2. ↑ Hoege C, Pfander B, Moldovan GL, Pyrowolakis G, Jentsch S. RAD6-dependent DNA repair is linked to modification of PCNA by ubiquitin and SUMO. Nature. 2002 Sep 12;419(6903):135-41. PMID:12226657 doi:10.1038/nature00991
3. ↑ Johnson ES, Gupta AA. An E3-like factor that promotes SUMO conjugation to the yeast septins. Cell. 2001 Sep 21;106(6):735-44. PMID:11572779
4. ↑ Takahashi Y, Toh-e A, Kikuchi Y. A novel factor required for the SUMO1/Smt3 conjugation of yeast septins. Gene. 2001 Sep 19;275(2):223-31. PMID:11587849
5. ↑ Strunnikov AV, Aravind L, Koonin EV. Saccharomyces cerevisiae SMT4 encodes an evolutionarily conserved protease with a role in chromosome condensation regulation. Genetics. 2001 May;158(1):95-107. PMID:11333221
6. ↑ Takahashi Y, Kahyo T, Toh-E A, Yasuda H, Kikuchi Y. Yeast Ull1/Siz1 is a novel SUMO1/Smt3 ligase for septin components and functions as an adaptor between conjugating enzyme and substrates. J Biol Chem. 2001 Dec 28;276(52):48973-7. Epub 2001 Sep 27. PMID:11577116 doi:http://dx.doi.org/10.1074/jbc.M109295200
7. ↑ Hoege C, Pfander B, Moldovan GL, Pyrowolakis G, Jentsch S. RAD6-dependent DNA repair is linked to modification of PCNA by ubiquitin and SUMO. Nature. 2002 Sep 12;419(6903):135-41. PMID:12226657 doi:10.1038/nature00991
8. ↑ Johnson ES, Blobel G. Ubc9p is the conjugating enzyme for the ubiquitin-like protein Smt3p. J Biol Chem. 1997 Oct 24;272(43):26799-802. PMID:9341106
9. ↑ Johnson ES, Gupta AA. An E3-like factor that promotes SUMO conjugation to the yeast septins. Cell. 2001 Sep 21;106(6):735-44. PMID:11572779