Abstract：
:A major goal in cell biology is to understand the functional organization of macromolecular complexes in vivo. Electron microscopy is helping cell biologists to achieve this goal, thanks to its ability to resolve structural details in the nanometer range. While issues related to specimen preparation, imaging, and image interpretation make this approach to cell architecture difficult, recent improvements in methods, equipment, and software have facilitated the study of both important macromolecular complexes and comparatively large volumes from cellular specimens. Here, we describe recent progress in electron microscopy of cells and the ways in which the relevant methodologies are helping to elucidate cell architecture.
journal_name
Curr Opin Cell Bioljournal_title
Current opinion in cell biologyauthors
Hoenger A,McIntosh JRdoi
10.1016/j.ceb.2008.12.003subject
Has Abstractpub_date
2009-02-01 00:00:00pages
89-96issue
1eissn
0955-0674issn
1879-0410pii
S0955-0674(08)00196-8journal_volume
21pub_type
杂志文章,评审abstract：:Meiosis is a key processes of sexual reproduction in eukaryotes. By combining two cell division cycles with a single round of DNA replication meiosis provides a mechanism to generate haploid gametes. Coincidentally, processes involved in ensuring appropriate segregation of homologous chromosomes also result in genetic...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2018.01.005
更新日期：2018-06-01 00:00:00
abstract：:The Sec61 and SecYEG translocation channels mediate the selective transport of proteins across the endoplasmic reticulum and bacterial inner membrane, respectively. These channels are also responsible for the integration of membrane proteins. To accomplish these two critical events in protein expression, the transport...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2009.04.010
更新日期：2009-08-01 00:00:00
abstract：:The nucleoskeleton is composed of many interacting structural proteins that provide the framework for DNA replication, transcription and a variety of other nuclear functions. For example, the type-V intermediate filament proteins, the lamins, and their associated proteins (e.g. Lap2alpha) play important roles in DNA r...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(03)00050-4
更新日期：2003-06-01 00:00:00
abstract：:Two key processes are in the basis of morphogenesis: the spatial allocation of cell types in fields of naïve cells and the regulation of growth. Both are controlled by morphogens, which activate target genes in the growing tissue in a concentration-dependent manner. Thus the morphogen model is an intrinsically quantit...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2008.01.008
更新日期：2008-04-01 00:00:00
abstract：:Three recent reports indicate that p120-catenin can modulate the activities of RhoA, Rac and Cdc42, suggesting an elegant and previously unexpected mechanism for regulating the balance between adhesive and motile cellular phenotypes. The observations in these reports provide important new clues toward p120's mechanism...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(00)00258-1
更新日期：2001-10-01 00:00:00
abstract：:Hypoxia-inducible factor 1 (HIF-1) is an oxygen-regulated transcriptional activator that plays essential roles in mammalian development, physiology and disease pathogenesis. The HIF-1 alpha subunit is subjected to oxygen-dependent ubiquitination and proteasomal degradation that is mediated by the von Hippel-Lindau pro...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(00)00194-0
更新日期：2001-04-01 00:00:00
abstract：:The conserved Aurora family of protein kinases have emerged as crucial regulators of mitosis and cytokinesis. Despite their high degree of homology, Aurora A and B have very distinctive localisations and functions: Aurora A associates with the spindle poles to regulate entry into mitosis, centrosome maturation and spi...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2009.09.008
更新日期：2009-12-01 00:00:00
abstract：:Tight junctions create a paracellular barrier between both epithelial and endothelial cells. Recent advances have helped define their molecular composition and regulation. Studies in cultured cell lines provide new insights into how assembly and barrier properties may be controlled by signal transduction cascades. ...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(93)90024-k
更新日期：1993-10-01 00:00:00
abstract：:Cilia (and flagella) are microtubule-based protrusions that are found in single or multiple copies on the surface of most eukaryotic cells. Defects in cilia formation and/or function have now been correlated with an expanding spectrum of human genetic diseases termed ciliopathies. Recent work indicates that cilia are ...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2016.05.004
更新日期：2016-08-01 00:00:00
abstract：:The development of a complex multicellular organism requires a coordination of growth and cell division under the control of patterning mechanisms. Studies in yeast have pioneered our understanding of the relationship between growth and cell division. In recent years, many of the pathways that regulate growth in multi...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(00)00284-2
更新日期：2001-12-01 00:00:00
abstract：:Research into the molecular mechanisms of target cell recognition by natural killer (NK) cells has recently progressed rapidly. NK cells express several MHC I recognizing receptors that inactivate the NK cells' functions. In pathological alterations of MHC I expression, the NK cell inhibitory receptors do not engage a...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(97)80120-2
更新日期：1997-10-01 00:00:00
abstract：:Actin polymerization generates the force that deforms the cell membrane, pulls the cell forward and propels endosomes and bacteria within the cell. The mechanism of force generation has been probed using experimental biomimetic systems where force generation and movement occur by the same actin-polymerization processe...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2004.12.001
更新日期：2005-02-01 00:00:00
abstract：:Mammalian Unc-51-like kinases 1 and 2 (ULK1 and ULK2) belong to the ULK/Atg1 family of serine/threonine kinases, which are conserved from yeast to mammals. Although ULK/Atg1 is best known for regulating flux through the autophagy pathway, it has evolutionarily conserved noncanonical functions in protein trafficking th...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2017.02.011
更新日期：2017-04-01 00:00:00
abstract：:Peroxisomes are part of the ubiquitous set of eukaryotic organelles. They are small, single membrane bounded vesicles, specialized in the degradation of very-long-chain fatty acids and in synthesis of myelin lipids. Once considered inconspicuous, recent new insights in the formation and function of peroxisomes have re...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2013.05.004
更新日期：2013-08-01 00:00:00
abstract：:The rate at which receptors have been cloned has recently increased dramatically--existing families have been extended and new families created. The rapid cloning by homology of 'orphan receptors' has also stimulated the development of a new reverse pharmacology. ...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(91)90142-l
更新日期：1991-04-01 00:00:00
abstract：:Telomeres, the natural termini of eukaryotic chromosomes, have been the subject of intense interest during the last decade because of the roles that these chromosome termini perform in both cancer and aging. As we become more cognizant of the consequences of telomere dysfunction on several aspects of human health, sig...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2006.04.005
更新日期：2006-06-01 00:00:00
abstract：:Recently there have been advances in studies of the molecular biology of the receptor for CNTF. In contrast with the receptors for other known neurotrophic factors, which belong to the family of receptor tyrosine kinases, the CNTF receptor belongs to the family of cytokine receptors. This review will describe the stru...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(93)90117-9
更新日期：1993-04-01 00:00:00
abstract：:The mitotic and meiotic cell cycle share many regulators, but there are also important differences between the two processes. The meiotic maturation of Xenopus oocytes has proved useful for understanding the regulation of Cdc2-cyclin-B, a key activator of G2/M progression. New insights have been made recently into the...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(00)00150-2
更新日期：2000-12-01 00:00:00
abstract：:Asymmetric cell division (ACD) is the fundamental process through which one cell divides into two cells with different fates. In animals, it is crucial for the generation of cell-type diversity and for stem cells, which use ACD both to self-renew and produce one differentiating daughter cell. One of the most prominent...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2019.07.018
更新日期：2020-02-01 00:00:00
abstract：:It is during gastrulation that the primordial germ layers are specified, embryonic axes become morphologically manifest, and the embryonic body plan begins to take shape. As morphogenetic movements push and pull nascent tissues into position within the gastrula, new interactions are established between neighboring cel...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2017.04.006
更新日期：2017-10-01 00:00:00
abstract：:A dynamic and reciprocal flow of information between cells and the extracellular matrix contributes significantly to the regulation of form and function in developing systems. Signals generated by the extracellular matrix do not act in isolation. Instead, they are processed within the context of global signalling hier...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(95)80117-0
更新日期：1995-10-01 00:00:00
abstract：:Rab GTPases and their regulatory proteins play a crucial role in vesicle-mediated membrane trafficking. During vesicle membrane tethering Rab GTPases are activated by GEFs (guanine nucleotide exchange factors) and then inactivated by GAPs (GTPase activating proteins). Recent evidence shows that in addition to activati...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2019.03.004
更新日期：2019-08-01 00:00:00
abstract：:1990 has been a year of continued exciting developments in cell cycle control. Progress has occurred in delineating the mechanism of activation of maturation-promoting factor during entry into mitosis and the mechanism of cyclin degradation responsible for exit from mitosis. Notable advances have also occurred in our ...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(91)90151-n
更新日期：1991-04-01 00:00:00
abstract：:The basic mechanisms of serine/threonine protein kinase signaling networks have been elucidated in the past decade. Members of the protein kinase C (PKC) family are crucial in T cell signaling pathways. Particularly, PKC alpha, PKC beta, and PKC theta isotypes determine the nature of lymphocyte-specific in vivo effect...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2008.12.008
更新日期：2009-04-01 00:00:00
abstract：:Recently, findings regarding a group of cancer predisposition and chromosome instability syndromes, Nijmegen breakage syndrome (NBS), the ataxia-telangiectasia-like disorder (A-TLD) and ataxia telangiectasia have shed light on the unexpected role of recombinational DNA repair proteins in DNA-damage-dependent cell-cycl...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(00)00091-0
更新日期：2000-06-01 00:00:00
abstract：:Transcriptional coactivators enhance gene expression by associating with sequence-specific transcription factors and serve as the primary targets of developmental and physiological signals in diverse biological processes. Recent studies have revealed key roles for transcriptional coactivators in the control of gene ex...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2006.10.003
更新日期：2006-12-01 00:00:00
abstract：:Vesicle and tubule transport containers move proteins and lipids from one membrane system to another. Newly forming transport containers frequently have electron-dense coats. Coats coordinate the accumulation of cargo and sculpt the membrane. Recent advances have shown that components of both COP1 and clathrin-adaptor...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2004.06.009
更新日期：2004-08-01 00:00:00
abstract：:A defining feature of eukaryotic cells is the nucleus, which houses the genome inside the nuclear envelope (NE): a double lipid bilayer that separates the nuclear and cytoplasmic materials. Although the NE is commonly viewed as a barrier that is overcome only by embedded nuclear pore complexes (NPCs) that facilitate n...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2013.08.002
更新日期：2014-02-01 00:00:00
abstract：:During the preceding year significant progress has been made in our understanding of laminin structure and expression. Highlights include the identification of new subunit chains and molecular isoforms as well as new information on tissue-specific gene expression, laminin self-assembly and interactions with other matr...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(93)90038-r
更新日期：1993-10-01 00:00:00
abstract：:Oocyte cytoplasmic factors can reprogramme the sperm genome during fertilisation or the somatic cell genome during cloning. Diverse reprogramming machinery acts sequentially and interdependently on the imported genome to drive it to totipotency, but their three-dimensional interactions in the cytoplasm remain unknown....
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(03)00031-0
更新日期：2003-06-01 00:00:00
