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Structures of APC/C(Cdh1) with substrates identify Cdh1 and Apc10 as the D-box co-receptor.
(NATURE PUBLISHING GROUP, 2011-02-10)
The ubiquitylation of cell-cycle regulatory proteins by the large multimeric anaphase-promoting complex (APC/C) controls sister chromatid segregation and the exit from mitosis. Selection of APC/C targets is achieved through ...
Three-dimensional structure of recombinant type 1 inositol 1,4,5-trisphosphate receptor.
(PORTLAND PRESS LTD, 2010-05-27)
IP3Rs (inositol 1,4,5-trisphosphate receptors) are the intracellular channels that mediate release of Ca2+ from the endoplasmic reticulum in response to the many stimuli that evoke Ins(1,4,5)P3 formation. We characterized ...
Prereplicative complexes assembled in vitro support origin-dependent and independent DNA replication.
(WILEY-BLACKWELL, 2014-03-18)
Eukaryotic DNA replication initiates from multiple replication origins. To ensure each origin fires just once per cell cycle, initiation is divided into two biochemically discrete steps: the Mcm2-7 helicase is first loaded ...
Origin licensing requires ATP binding and hydrolysis by the MCM replicative helicase.
(CELL PRESS, 2014-09-04)
Loading of the six related Minichromosome Maintenance (MCM) proteins as head-to-head double hexamers during DNA replication origin licensing is crucial for ensuring once-per-cell-cycle DNA replication in eukaryotic cells. ...
A closed conformation of the Caenorhabditis elegans separase-securin complex.
(ROYAL SOC, 2016-04-13)
The protease separase plays a key role in sister chromatid disjunction and centriole disengagement. To maintain genomic stability, separase activity is strictly regulated by binding of an inhibitory protein, securin. Despite ...
Nanostructures from Synthetic Genetic Polymers.
(WILEY-V C H VERLAG GMBH, 2016-06-16)
Nanoscale objects of increasing complexity can be constructed from DNA or RNA. However, the scope of potential applications could be enhanced by expanding beyond the moderate chemical diversity of natural nucleic acids. ...
Structural basis of RNA polymerase III transcription initiation.
(NATURE PORTFOLIO, 2018-01-17)
RNA polymerase (Pol) III transcribes essential non-coding RNAs, including the entire pool of transfer RNAs, the 5S ribosomal RNA and the U6 spliceosomal RNA, and is often deregulated in cancer cells. The initiation of gene ...
Three-dimensional structure of the basketweave Z-band in midshipman fish sonic muscle.
(NATL ACAD SCIENCES, 2019-07-30)
Striated muscle enables movement in all animals by the contraction of myriads of sarcomeres joined end to end by the Z-bands. The contraction is due to tension generated in each sarcomere between overlapping arrays of actin ...
The Interacting Head Motif Structure Does Not Explain the X-Ray Diffraction Patterns in Relaxed Vertebrate (Bony Fish) Skeletal Muscle and Insect (Lethocerus) Flight Muscle.
(MDPI, 2019-09-14)
Unlike electron microscopy, which can achieve very high resolution but to date can only be used to study static structures, time-resolved X-ray diffraction from contracting muscles can, in principle, be used to follow the ...
Structural basis of Cullin 2 RING E3 ligase regulation by the COP9 signalosome.
(NATURE RESEARCH, 2019-08-23)
Cullin-Ring E3 Ligases (CRLs) regulate a multitude of cellular pathways through specific substrate receptors. The COP9 signalosome (CSN) deactivates CRLs by removing NEDD8 from activated Cullins. Here we present structures ...