| Full text | |
| Author(s): |
da Silva, Marcelo S.
[1]
;
Vitarelli, Marcela O.
[1]
;
Souza, Bruno F.
[1]
;
Elias, Maria Carolina
[1]
Total Authors: 4
|
| Affiliation: | [1] Inst Butantan, Ctr Toxins Immune Response & Cell Signaling CeTIC, Lab Ciclo Celular, BR-05503900 Sao Paulo - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | GENES; v. 11, n. 5 MAY 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Single-celled eukaryote genomes predominantly replicate through multiple origins. Although origin usage during the S-phase has been elucidated in some of these organisms, few studies have comparatively approached this dynamic. Here, we developed a user-friendly website able to calculate the length of the cell cycle phases for any organism. Next, using a formula developed by our group, we showed a comparative analysis among the minimum number of replication origins (MO) required to duplicate an entire chromosome within the S-phase duration in trypanosomatids (Trypanosoma cruzi, Leishmania major, and Trypanosoma brucei) and yeasts (Saccharomyces cerevisiae and Schizosaccharomyces pombe). Using the data obtained by our analysis, it was possible to predict the MO required in a situation of replication stress. Also, our findings allow establishing a threshold for the number of origins, which serves as a parameter for genome approaches that map origins. Moreover, our data suggest that when compared to yeasts, trypanosomatids use much more origins than the minimum needed. This is the first time a comparative analysis of the minimum number of origins has been successfully applied. These data may provide new insight into the understanding of the replication mechanism and a new methodological framework for studying single-celled eukaryote genomes. (AU) | |
| FAPESP's process: | 13/07467-1 - CeTICS - Center of Toxins, Immune-Response and Cell Signaling |
| Grantee: | Hugo Aguirre Armelin |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 14/24170-5 - DNA replication dynamics in Trypanosoma cruzi: licensing and replication rate characterization |
| Grantee: | Marcelo Santos da Silva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 16/50050-2 - How do common and diverged features of the replicative stress response shape the biology of TriTryp parasites? |
| Grantee: | Maria Carolina Quartim Barbosa Elias Sabbaga |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/18719-2 - Structural analysis of the origin recognition complex (ORC) in Trypanosoma brucei using cryo-electron microscopy and single-particle analysis |
| Grantee: | Marcelo Santos da Silva |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 17/07693-2 - Functional dynamics of Orc1b protein during the life cycle of Trypanosoma |
| Grantee: | Marcela de Oliveira Vitarelli |
| Support Opportunities: | Scholarships in Brazil - Doctorate |