Journal
ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS
Volume 64, Issue -, Pages 819-821Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S174430910802277X
Keywords
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Funding
- Japan Society for the Promotion of Science (JSPS) [16770080, 18770091]
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) [16048226, 17048023, 19036025, 17054035, 18054026, 20051020]
- National Projects on Protein Structural and Functional Analyses [Protein 3000]
- Target Protein Research Program
- MEXT
- Grants-in-Aid for Scientific Research [17048023, 18054026, 20051020, 16048226, 17054035, 19036025, 16770080, 18770091] Funding Source: KAKEN
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Proliferating cell nuclear antigen (PCNA) is an evolutionarily conserved protein that forms a ring-shaped homotrimer that functions as a sliding clamp for DNA replication. The rev6-1 mutation of Saccharomyces cerevisiae, which inactivates both translesion DNA synthesis and damage-avoidance pathways while having little effect on normal cell growth, has a G178S substitution in the PCNA protein. Human PCNA protein carrying the G178S substitution was crystallized. Two crystal forms were obtained under similar conditions. Crystal forms I and II belong to space groups P2(1), with unit-cell parameters a = 84.1, b = 130.2, c = 97.8 angstrom, beta = 113.4 degrees, and P2(1)2(1)2(1), with unit-cell parameters a = 68.1, b = 100.2, c = 131.2 angstrom, respectively. Structural analyses by molecular replacement are now in progress.
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