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- Sciencedirect from 1997, Proquest, Rcgp, Gale, CSA, and Ingenta
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...
The SUMO-specific isopeptidase SENP3 regulates MLL1/MLL2 methyltransferase complexes and controls osteogenic differentiation.
We show that the SUMO-specific isopeptidase SENP3 controls H3K4 methylation by regulating histone-modifying SET1/MLL complexes. SET1/MLL complexes are composed of a histone methyltransferase and the regulatory components WDR5, RbBP5, Ash2L, and DPY-30. MLL1/MLL2 complexes contain menin as additional...
Identification of regulators of the three-dimensional polycomb organization by a microscopy-based genome-wide RNAi screen.
We report the results of a high-resolution microscopy genome-wide RNAi screen that identifies 129 genes that regulate the nuclear organization of Pc foci. Candidate genes include PcG components and chromatin factors, as well as many protein-modifying enzymes, including components of the SUMOylation...
XPF-ERCC1 acts in Unhooking DNA interstrand crosslinks in cooperation with FANCD2 and FANCP/SLX4.
We show that the 3' flap endonuclease XPF-ERCC1 cooperates with SLX4/FANCP to carry out the unhooking incisions. Efficient recruitment of XPF-ERCC1 and SLX4 to the ICL depends on FANCD2 and its ubiquitylation. These data help define the molecular mechanism by which the Fanconi anemia pathway promote...
An mRNA-derived noncoding RNA targets and regulates the ribosome.
We show that an mRNA-derived 18-nucleotide-long ncRNA is capable of downregulating translation in Saccharomyces cerevisiae by targeting the ribosome. This 18-mer ncRNA binds to polysomes upon salt stress and is crucial for efficient growth under hyperosmotic conditions. Although the 18-mer RNA origi...
Global analyses of the effect of different cellular contexts on microRNA targeting.
We compared cohorts of genes repressed by the same miRNAs in different cell lines and tissues and found that target repertoires were largely unaffected, with secondary effects explaining most of the differential responses detected. Outliers resulting from differential direct targeting were often att...
Early Steps in Autophagy Depend on Direct Phosphorylation of Atg9 by the Atg1 Kinase
Deacetylase-independent function of HDAC3 in transcription and metabolism requires nuclear receptor corepressor.
We show that pharmacologic HDAC inhibition in primary hepatocytes causes histone hyperacetylation but does not upregulate expression of HDAC3 target genes. Meanwhile, deacetylase-dead HDAC3 mutants can rescue hepatosteatosis and repress lipogenic genes expression in HDAC3-depleted mouse liver, demon...