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- Sciencedirect from 1997, Proquest, Rcgp, Gale, CSA, and Ingenta
Cytosolic Quality Control of Mislocalized Proteins Requires RNF126 Recruitment to Bag6.
We identify the ubiquitin ligase RNF126 as a key component of the MLP degradation pathway. In vitro reconstitution and fractionation studies reveal that RNF126 is the primary Bag6-dependent ligase. RNF126 is recruited to the N-terminal Ubl domain of Bag6 and preferentially ubiquitinates juxtahydroph...
Structure of the BRCT repeats of BRCA1 bound to a BACH1 phosphopeptide: implications for signaling.
We report the crystal structure of the BRCT repeats of human BRCA1 bound to a phosphorylated BACH1 peptide at 2.3 A resolution. The phosphorylated serine 990 and phenylalanine 993 of BACH1 anchor the binding to BRCA1 through specific interactions with a surface cleft at the junction of the two BRCT...
Structural basis for octameric ring formation and DNA interaction of the human homologous-pairing protein Dmc1.
We crystallized the full-length human Dmc1 protein and solved the structure of the Dmc1 octameric ring. The monomeric structure of the Dmc1 protein closely resembled those of the human and archaeal Rad51 proteins. In addition to the polymerization motif that was previously identified in the Rad51 pr...
Mitotic checkpoint inactivation fosters transformation in cells lacking the breast cancer susceptibility gene, Brca2.
We report that inactivation of cell cycle checkpoints responsive to mitotic spindle disruption, by mutant forms of p53 or Bub1, relieves growth arrest and initiates neoplastic transformation in primary cells homozygous for truncated Brca2. Tumors from Brca2-deficient animals exhibit dysfunction of t...
Dynamic heterogeneity and DNA methylation in embryonic stem cells.
We analyzed gene expression in individual ESCs using single-molecule RNA-FISH and quantitative time-lapse movies. These data discriminated stochastic switching between two coherent (correlated) gene expression states and burst-like transcriptional noise. We further showed that the "2i" signaling pat...
Regulatory Interactions between RNA and Polycomb Repressive Complex 2.
We biochemically and functionally probe PRC2's recognition of RNA using the X-inactivation model. We observe surprisingly high discriminatory capabilities. While SUZ12 and JARID2 subunits can bind RNA, EZH2 has highest affinity and is somewhat promiscuous. EED regulates the affinity of EZH2 for RNA,...
VEGF Signals through ATF6 and PERK to promote endothelial cell survival and angiogenesis in the absence of ER stress.
We show that VEGF activates UPR mediators through a PLCγ-mediated crosstalk with the mTORC1 complex without accumulation of unfolded proteins in the ER. Activation of ATF6 and PERK contributes to the survival effect of VEGF on endothelial cells (ECs) by positively regulating mTORC2-mediated phosphor...
HDMX folds the nascent p53 mRNA following activation by the ATM kinase.
We show that following phosphorylation by the ataxia telangiectasia mutated (ATM) kinase at serine 403, the C-terminal RING domain of HDMX binds the nascent p53 mRNA to promote a conformation that supports the p53 mRNA-HDM2 interaction and the induction of p53 synthesis. HDMX and its homolog HDM2 bi...
Retraction notice to: Nuclear receptor function requires a TFTC-type histone acetyl transferase complex.
The Cdk/cDc14 module controls activation of the Yen1 holliday junction resolvase to promote genome stability.
We have refined the substrate specificity of budding yeast Cdc14 and, using this insight, identified the Holliday junction resolvase Yen1 as a DNA repair target of Cdc14. Cdc14 activation at anaphase triggers nuclear accumulation and enzymatic activation of Yen1, likely to resolve persistent recombi...