Cullin-4A is a protein that in humans is encoded by the CUL4A gene. CUL4A belongs to the cullin family of ubiquitin ligase proteins and is highly homologous to the CUL4B protein. CUL4A regulates numerous key processes such as DNA repair, chromatin remodeling, spermatogenesis, haematopoiesis and the mitotic cell cycle.
How many Cullins are there?
Mammals express seven canonical cullin proteins (Cul1, Cul2, Cul3, Cul4A, Cul4B, Cul5, and Cul7) that form modular, multisubunit CRLs, designated CRL1–7.
What are cullin RING ligases?
The cullin–RING ligases (CRLs) comprise a superfamily of ubiquitin ligases that are implicated in the regulation of a diverse array of eukaryotic functions. The various cullin proteins function as a rigid scaffold for the assembly of this modular class of ligase.
What is CDC6 and CDT1?
CDC6 is an ATP binding protein and a member of the pre-replicative complex (pre-RC) together with the origin recognition complex (ORC), Cdt1 and the MCM complex (containing MCM2-7p). CDC6 assembles after ORC in an ATP dependent manner and is required for loading MCM proteins onto the DNA.
What is CDT1 in biology?
CDT1 (Chromatin licensing and DNA replication factor 1) is a protein that in humans is encoded by the CDT1 gene. It is a licensing factor that functions to limit DNA from replicating more than once per cell cycle.
When did the Cullens become vampires?
Members
| Name | Full Name | Turned |
|---|---|---|
| Carlisle Cullen | Carlisle Cullen | 1663 by a vampire in the sewers of London |
| Edward Cullen | Edward Anthony Masen Cullen | September 1918 by Carlisle Cullen |
| Esme Cullen | Esme Anne Platt Evenson Cullen | 1921 by Carlisle Cullen |
| Rosalie Hale | Rosalie Lillian Hale | April, 1933 by Carlisle Cullen |
Is proteasome membrane bound?
However, a subpopulation of proteasomes are bound to the cytosolic face of ER membranes (Rivett et al 1992, Palmer et al 1996). These membrane-bound proteasomes could be interacting with the Sec61p complex or with other proteins involved in retrotranslocation.
What is MCM helicase?
The MCM (minichromosome maintenance) complex is a helicase which is essential for DNA replication. Recent results suggest that the MCM helicase is important for replication fork integrity, and may function as a target of the replication checkpoint.
What is DDK protein?
The yeast Dbf4-dependent kinase (DDK) (composed of Dbf4 and Cdc7 subunits) is an essential, conserved Ser/Thr protein kinase that regulates multiple processes in the cell, including DNA replication, recombination and induced mutagenesis.
What does CDT1 do in cell cycle?
The CDT1 gene provides instructions for making a protein that is important in the copying of a cell’s DNA before the cell divides (a process known as DNA replication). The protein produced from this gene is one of a group of proteins known as the pre-replication complex.
