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Molecular Cell

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Sciencedirect from 1997, Proquest, Rcgp, Gale, CSA, and Ingenta

  1. Structure of the BRCT repeats of BRCA1 bound to a BACH1 phosphopeptide: implications for signaling.

    Molecular Cell 14(3):405 (2004) PMID 15125843

    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...
  2. Structural basis for octameric ring formation and DNA interaction of the human homologous-pairing protein Dmc1.

    Molecular Cell 14(3):363 (2004) PMID 15125839

    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...
  3. Mitotic checkpoint inactivation fosters transformation in cells lacking the breast cancer susceptibility gene, Brca2.

    Molecular Cell 4(1):1 (1999) PMID 10445022

    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...
  4. A global regulatory mechanism for activating an exon network required for neurogenesis.

    Molecular Cell 56(1):90 (2014) PMID 25219497

    We demonstrate that nSR100-dependent neural exons are associated with a unique configuration of intronic cis-elements that promote rapid switch-like regulation during neurogenesis. A key feature of this configuration is the insertion of specialized intronic enhancers between polypyrimidine tracts an...
  5. eRNAs Lure NELF from Paused Polymerases.

    Molecular Cell 56(1):3 (2014) PMID 25280099

    RNAs transcribed from enhancers (eRNAs) have been linked to enhancer function. In this issue of Molecular Cell, Schaukowitch et al. (2014) show that upon activation, eRNAs can bind NELF and are necessary for its transient removal from promoters to release paused RNA polymerase II and drive expressio...
  6. NuA4 Initiates Dynamic Histone H4 Acetylation to Promote High-Fidelity Sister Chromatid Recombination at Postreplication Gaps

    Molecular Cell 55(6):818 (2014) PMID 25132173 PMCID PMC4169719

    We discovered that regulated histone H4 acetylation is required to maintain CAG repeat stability and promote gap-induced sister chromatid recombination. CAG expansions in the absence of H4 HATs NuA4 and Hat1 and HDACs Sir2, Hos2, and Hst1 depended on Rad52, Rad57, and Rad5 and were therefore arising...
  7. Reconstitution of a minimal ribosome-associated ubiquitination pathway with purified factors.

    Molecular Cell 55(6):880 (2014) PMID 25132172 PMCID PMC4175178

    We reconstitute ribosome-associated ubiquitination with purified factors to define the minimal components and essential steps in this process. We find that the primary role of the ribosome splitting factors Hbs1, Pelota, and ABCE1 is to permit Listerin access to the nascent chain. Listerin alone can...
  8. Lysine acetylation activates 6-phosphogluconate dehydrogenase to promote tumor growth.

    Molecular Cell 55(4):552 (2014) PMID 25042803 PMCID PMC4142084

    We found that 6PGD is commonly activated in EGF-stimulated cells and human cancer cells by lysine acetylation. Acetylation at K76 and K294 of 6PGD promotes NADP(+) binding to 6PGD and formation of active 6PGD dimers, respectively. Moreover, we identified DLAT and ACAT2 as upstream acetyltransferases...
  9. RIG-I holds the CARDs in a game of self versus nonself.

    Molecular Cell 55(4):505 (2014) PMID 25148359

    A new study (Wu et al., 2014) employs X-ray crystallography and cryoelectron microscopy (cryo-EM) to reveal how the caspase activation and recruitment domains (CARDs) of the cytosolic viral RNA sensor RIG-I nucleate the formation of large CARD filaments of the mitochondrial antiviral signaling prote...
  10. Molecular basis for coordinating transcription termination with noncoding RNA degradation.

    Molecular Cell 55(3):467 (2014) PMID 25066235 PMCID PMC4186968

    We provide structural and functional evidence demonstrating that the same domain of Nrd1p interacts with RNA polymerase II and Trf4p in a mutually exclusive manner, thus defining two alternative forms of the NNS complex, one involved in termination and the other in degradation. We show that the Nrd1...