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27401 Ensembl ENSG00000145604 ENSMUSG00000054115 UniProt Q13309 Q9Z0Z3 RefSeq (mRNA) NM_001243120 NM_005983 NM_032637 NM_001285980 NM_013787 NM_145468 RefSeq (protein) NP_001230049 NP_005974 NP_116026 NP_001272909 NP_038815 Location (UCSC) Chr 5: 36.15 – 36.2 Mb Chr 15: 9.11 – 9.16 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse S-phase kinase-associated protein 2 is an enzyme ...
S phase (Synthesis phase) is the phase of the cell cycle in which DNA is replicated, occurring between G 1 phase and G 2 phase. [1] Since accurate duplication of the genome is critical to successful cell division, the processes that occur during S-phase are tightly regulated and widely conserved.
DNA ligase is an enzyme that joins together ends of DNA molecules. Although commonly represented as joining two pairs of ends at once, as in the ligation of restriction enzyme fragments, ligase can also join the ends on only one of the two strands (for example, when the other strand is already continuous or lacks a terminal phosphate necessary for ligation).
DNA ligase is a type of enzyme that facilitates the joining of DNA strands together by catalyzing the formation of a phosphodiester bond.It plays a role in repairing single-strand breaks in duplex DNA in living organisms, but some forms (such as DNA ligase IV) may specifically repair double-strand breaks (i.e. a break in both complementary strands of DNA).
During S phase, Cdc6 and Cdt1 are degraded or inactivated to block additional pre-RC formation, and bidirectional DNA replication ensues. When the replication fork encounters lesions in the DNA, the S-phase checkpoint response slows or stops fork progression and stabilizes the association of MCM2-7 with the replication fork during DNA repair.
The discovery of DNA ligase dates back to 1967 and was an important event in the field of molecular biology. [1] Ligation in the laboratory is normally performed using T4 DNA ligase. It is broadly used in vitro due to its capability of joining sticky-ended fragments as well as blunt-ended fragments. [2]
S-phase: During cell replication when DNA is replicated, and is initiated by the S-phase-promoting factor(SPF) cyclin complexes. [2] The DNA replication takes place, due to the increase in SPF during the switching from G1 to S phase in the cell cycle. [2] SPF is also used to inhibit double replication of chromosomes in the cell cycle, which is ...
Instead, the pre-RC that is formed during the G 1 of the cell cycle is only activated to unwind the DNA and initiate replication after the cells pass from the G 1 to the S phase of the cell cycle. [2] Once the initiation complex is formed and the cells pass into the S phase, the complex then becomes a replisome.