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Although Skp2 is an enzyme, its function requires the assembly of the other members of the SCF complex. As Skp2 is the rate-limiting component of the SCF complex, effective inhibitors should be focused on the interfaces of Skp2 with the other members of the SCF complex, which is much more difficult than traditional enzyme inhibition.
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.
The RING protein appears to function as a docking site for ubiquitin-conjugating enzymes (E2s). Other proteins contain a cullin-homology domain, such as CUL9 , also known as p53 cytoplasmic anchor PARC , and the ANAPC2 subunit of the anaphase-promoting complex/cyclosome; both CUL9 and ANAPC2 have ubiquitin ligase activity.
Skp, Cullin, F-box containing complex (or SCF complex) is a multi-protein E3 ubiquitin ligase complex that catalyzes the ubiquitination of proteins destined for 26S proteasomal degradation. [1] Along with the anaphase-promoting complex, [2] SCF has important roles in the ubiquitination of proteins involved in the cell cycle. The SCF complex ...
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).
In biochemistry, a ligase is an enzyme that can catalyze the joining of two molecules by forming a new chemical bond. This is typically via hydrolysis of a small pendant chemical group on one of the molecules, typically resulting in the formation of new C-O, C-S, or C-N bonds.
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 ...
LIG1 encodes DNA ligase 1, which functions in DNA replication and the base excision repair process. [10] Eukaryotic DNA ligase 1 catalyzes a reaction that is chemically universal to all ligases. DNA ligase 1 utilizes adenosine triphosphate (ATP) to catalyze the energetically favorable ligation events in both DNA replication and repair.