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anti-Human CDC45 Antibodies:
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Human Polyclonal CDC45 Primary Antibody for ICC, IF - ABIN442729
Hubbi, Kshitiz, Gilkes, Rey, Wong, Luo, Kim, Dang, Levchenko, Semenza: A nontranscriptional role for HIF-1α as a direct inhibitor of DNA replication. in Science signaling 2013
Data show that MRE11- and RAD51-dependent fork repair leading to reloading of the GINS onto the MCM-CDC45 complex still engaged with the DNA could be sufficient to restore a functional CDC45-MCM-GINS (CMG) helicase complex.
The size and relative position of the three helices (alpha2, alpha7 and alpha8) that contribute to the active site architecture are highly conserved between Cdc45 and RecJ, whereas the helical structure on the solvent-exposed DHH side (alpha3, alpha4 and alpha5) shows more conformational variability.
strong evidence that Cdc45 directly loads RPA on the emerging nascent ssDNA
Date show that when Wee1 alone is inhibited, Chk1 suppresses CDC45 loading and thereby limits the extent of unscheduled replication initiation and subsequent S-phase DNA damage, despite very high CDK-activity.
The oncogenic activity of cell division cycle 45 was also confirmed in vivo. In conclusion, cell division cycle 45 may serve as a novel biomarker and a potential therapeutic target for papillary thyroid cancer.
Mutations in CDC45, Encoding an Essential Component of the Pre-initiation Complex, Cause Meier-Gorlin Syndrome and Craniosynostosis
ectopic expression of Cdc45 led to increased firing of replication origins, severe replication stress, an early S-phase arrest, replication fork stalling, and eventually cell death by apoptosis.
The depletion of HDHB from human cells diminishes Cdc45 association with chromatin, suggesting that HDHB may facilitate Cdc45 recruitment at G1/S in human cells.
The findings suggest that hCdc45 not only binds to but also slides on DNA with a 3'-5' polarity and, thereby acts as a molecular 'wedge' to initiate DNA strand displacement.
Data suggest that CDC45 and MCM10 (minichromosome maintenance complex component 10) directly interact and establish a mutual co-operation in DNA binding; key domains appear to interact and then interact with DNA inside cells or in cell-free systems.
CDC45 directly interact with MCM2-7 proteins; with PSF2, PSF3 and SLD5 in GINS subunits; and with replication protein A2, AND-1. A considerable portion of CDC45 localizes in a region other than the DNA replication forks in nuclei.
After UV-damage, Cdc45 is still present in a large multi-protein complex and that its mobility within living cells is consistently similar following UVC-mediated DNA damage.
Data show that using a 200-nt primed circular DNA substrate, the combined action of DNA polymerase epsilon and the Cdc45/Mcm2-7/GINS (CMG complex) leads to the formation of products >10 kb in length.
Structural and functional insights into the DNA replication factor Cdc45 reveal an evolutionary relationship to the DHH family of phosphoesterases
Cdc45, which is known to be required for replication fork progression, shows similar patterns of origin association to those of Timeless
The coordinated binding of DUE-B and Cdc45 to origins and the physical interactions of DUE-B, Cdc45, and TopBP1 suggest that complexes of these proteins are necessary for replication initiation.
the Chk1-mediated S-phase checkpoint targets initiation factor Cdc45 via a Cdc25A/Cdk2-independent mechanism
MCM4 phosphorylation by Cdc7 kinase facilitates its interaction with Cdc45 on chromatin
CDC45L is part of the GINS complex.
Cdc45 may play an important role in elongation of DNA replication by bridging the processive DNA polymerases delta and epsilon with the replicative helicase in the elongating machinery
Cdc45 expression is tightly associated with proliferating cell populations and Cdc45 seems to be a promising candidate for a novel proliferation marker in cancer cell biology
Cdc45 Recapitulates Myc-Dependent DNA Replication Stress.
The protein encoded by this gene was identified by its strong similarity with Saccharomyces cerevisiae Cdc45, an essential protein required to the initiation of DNA replication. Cdc45 is a member of the highly conserved multiprotein complex including Cdc6/Cdc18, the minichromosome maintenance proteins (MCMs) and DNA polymerase, which is important for early steps of DNA replication in eukaryotes. This protein has been shown to interact with MCM7 and DNA polymerase alpha. Studies of the similar gene in Xenopus suggested that this protein play a pivotal role in the loading of DNA polymerase alpha onto chromatin. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene.
CDC45 cell division cycle 45 homolog
, cell division cycle 45 homolog
, CDC45 cell division cycle 45-like
, CDC45-related protein
, cell division control protein 45 homolog
, cell division cycle 45-like 2
, human CDC45