Abstract：
:Several proteins involved in exocytosis have been identified recently, but it is still completely unclear which molecules perform the fusion event itself. Although in viral fusion the fusion proteins are known, even there the molecular mechanism remains controversial. Investigation of single fusion events by electrophysiological techniques together with fluorimetric measurements have now provided some insight into the properties of the first aqueous connection, the fusion pore. This pore has an initial size similar to an ion channel and allows movement of lipids only after it has substantially expanded, indicating that it is initially not a purely lipidic structure, but incorporates lipids when it expands. Although neurotransmitter release may occur through narrow transient fusion pores, the fusion pore of synaptic vesicles probably expands vey rapidly, making it unlikely that secretion is performed by rapid exo/endocytosis without full fusion under normal conditions. Recent recordings from small membrane patches have made it possible to resolve fusion events from vesicles as small as synaptic vesicles. Future experiments using excised patches may provide an approach to identify the molecular machinery of exocytotic membrane fusion.
journal_name
Curr Opin Cell Bioljournal_title
Current opinion in cell biologyauthors
Lindau M,Almers Wdoi
10.1016/0955-0674(95)80007-7subject
Has Abstractpub_date
1995-08-01 00:00:00pages
509-17issue
4eissn
0955-0674issn
1879-0410pii
0955-0674(95)80007-7journal_volume
7pub_type
杂志文章,评审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：:Cilia are evolutionarily conserved, membrane-bound, microtubular projections emanating from the cell surface. They are assembled on virtually all cell types in the human body, with very few exceptions, and several recent reviews have covered the topic in great detail. The cilium is assembled from mature (mother) centr...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2013.04.011
更新日期：2013-08-01 00:00:00
abstract：:New structural analyses of the spectrin family of actin cross-linking proteins are providing molecular explanations for both the interchain binding between the alpha and beta chains of spectrin and the intermolecular associations between spectrin and other proteins. Additionally, the analyses bring into focus a confor...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(96)80048-2
更新日期：1996-02-01 00:00:00
abstract：:Classical heterochromatin chromosomal landmarks, such as centromeres and telomeres, are characterized by specific chromatin signatures. Among these, the incorporation of histone variants has recently emerged as an important feature. Using the centromere as a paradigm, we consider the role of histone variant dynamics i...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2011.03.006
更新日期：2011-06-01 00:00:00
abstract：:Considerable advances into the basis of RNA-polymerase-II-mediated transcriptional regulation have recently emerged. Biochemical, genetic and structural studies have contributed to novel insights into transcription, as well as the functional significance of covalent histone modifications. New details regarding transcr...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2004.04.004
更新日期：2004-06-01 00:00:00
abstract：:Analyses of the sequences and structures of many transport proteins that differ in substrate specificity, direction of transport and mechanism of transport suggest that they form a family of related proteins. Their sequence similarities imply a common mechanism of action. This hypothesis provides an objective basis fo...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(92)90090-y
更新日期：1992-08-01 00:00:00
abstract：:Several recently discovered mammalian cell adhesion proteins recognize and bind to sialic acid-containing ligands. Reports concerning the molecular specificities of these interactions have been intriguing but somewhat confusing, partly because of pitfalls in methodology or interpretation. Nevertheless, these protein-c...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(92)90041-a
更新日期：1992-04-01 00:00:00
abstract：:Extracellular matrix (ECM) induces and maintains the differentiation of epithelial cells, not by totally altering their state of differentiation, but by activating overt differentiation. Recent studies of cultured mammary cells provide an elegant molecular analysis of this kind of progressive cell differentiation. Oth...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(93)90088-8
更新日期：1993-12-01 00:00:00
abstract：:Mitochondria make physical contact with nearly every other membrane in the cell, and these contacts have a wide variety of functions that are carried out by proteins that reside at the sites of contact. Over the past decade, tremendous insight into the identity and functions of proteins localized to mitochondrial cont...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2020.02.010
更新日期：2020-08-01 00:00:00
abstract：:Mitochondria are classically known as the essential energy producers in cells. As such, the activation of mitochondrial metabolism upon cellular differentiation was deemed a necessity to fuel the high metabolic needs of differentiated cells. However, recent studies have revealed a direct role for mitochondrial activit...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2017.11.003
更新日期：2017-12-01 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：:The process of fertilization is fundamental to the maintenance of life. The ability of unfertilized eggs and free-swimming sperm to recognize, adhere to, and fuse with each other are vital aspects of the fertilization process. Significant progress has been made recently in identifying and characterizing (glyco)protein...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(95)80107-3
更新日期：1995-10-01 00:00:00
abstract：:Members of the kinesin superfamily of microtubule-based motors and the myosin superfamily of actin-based motors that move 'backwards' have been identified. As the core catalytic domains of myosins and kinesins are similar in structure, this raises the intriguing questions of how direction reversal is accomplished and ...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(00)00170-8
更新日期：2001-02-01 00:00:00
abstract：:Focal adhesion kinase (pp125FAK), a protein tyrosine kinase, has recently been suggested to regulate aspects of signalling induced by integrins and by certain growth factor and hormone receptors. New studies indicate that the domains of pp125FAK regulate its interactions with integrin subunits, other protein tyrosine ...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(94)90097-3
更新日期：1994-10-01 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：:In the adult, angiogenesis, the formation of new blood vessels from pre-existing vasculature contributes to the pathogenesis of many disorders including cancer. The role of adhesion molecules, especially integrins, in pathological angiogenesis has long been the subject of investigation, mostly because of their potenti...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2008.06.007
更新日期：2008-10-01 00:00:00
abstract：:The establishment of left-right asymmetry during development of vertebrate embryos depends on leftward flow in the nodal cavity. The flow is produced by the rotational movement of the posteriorly tilted nodal cilia. However, it remains poorly understood how the nodal cilia are tilted posteriorly, and how the direction...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2012.01.002
更新日期：2012-02-01 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：:The field of molecular physiology of ClC chloride channels has witnessed a tremendous surge in knowledge over the past few years; however, fundamental issues such as the stoichiometry of ClC channels and the identification of pore-lining sequences have only recently begun to be addressed. New studies have also provide...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(99)80074-x
更新日期：1999-08-01 00:00:00
abstract：:The arrangement and dynamics of chromosomes inside the nucleus of mammalian cells have been studied intensively over the last two years. Although chromosomes are relatively immobile and occupy non-random positions in interphase, their dynamic movements in mitosis have traditionally been assumed to randomize this arran...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2003.10.014
更新日期：2003-12-01 00:00:00
abstract：:Analysis of complex and redundant pathways that control proliferation, differentiation, apoptosis and DNA damage response by global genome wide analysis is an intensive area of investigation aimed at identifying unique molecular signatures of prognostic significance in cancer. An alternative approach is to focus on th...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2007.10.005
更新日期：2007-12-01 00:00:00
abstract：:Studies of various membrane trafficking steps over the past year indicate that membranes are tethered together prior to the interaction of v-SNAREs and t-SNAREs across the membrane junction. The tethering proteins identified to date are quite large, being either fibrous proteins or multimeric protein complexes. The te...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(99)80065-9
更新日期：1999-08-01 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：:Notch is a well-conserved signaling pathway all through evolution that is crucial to specify different cell fates. Although there is a strong context dependent component in each decision, the basic mechanisms that originate from the interplay among ligands and receptors is greatly preserved. In this review we will cov...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2018.06.010
更新日期：2018-12-01 00:00:00
abstract：:Intracellular signals are received and generated by the alpha(IIb)beta(3) integrin on platelets. Recent advances have been made in the areas of agonist receptors that initiate platelet activation, downstream signaling molecules (e.g. small G-proteins and kinases) and changes in ligand-occupied alpha(IIb)beta(3) that c...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(99)00018-6
更新日期：1999-10-01 00:00:00
abstract：:Cohesin is a four subunit complex, conserved from yeast to man, with the ability to hold together two DNA segments within its ring-shaped structure. When the two segments belong to sister chromatids, cohesin is mediating cohesion, which is essential for chromosome segregation in mitosis and meiosis and for homologous ...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ceb.2012.10.013
更新日期：2013-02-01 00:00:00
abstract：:Studies of yeast transcription factors have contributed greatly to understanding basic molecular mechanisms of eukaryotic gene regulation, largely due to powerful genetic approaches that are unavailable in other organisms. The broad outlines of these mechanisms are fairly well understood, and there is an increasing nu...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(93)90018-l
更新日期：1993-06-01 00:00:00
abstract：:Rho, Rac and Cdc42 are three Ras-related GTP-binding proteins that control the assembly and disassembly of the actin cytoskeleton in response to extracellular signals. During the past year, numerous candidate downstream targets for these GTPases have been identified using affinity chromatography and yeast two-hybrid t...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/s0955-0674(97)80156-1
更新日期：1997-02-01 00:00:00
abstract：:Apoptosis, or programmed cell death, plays an essential role in specific cell deletion during normal embryonic and adult development in vertebrate and invertebrate species. Recent evidence suggests that signal transduction pathways governing cellular proliferation and cell cycle progression also mediate the physiologi...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(93)90118-a
更新日期：1993-04-01 00:00:00
abstract：:As a key part of the mechanism which controls growth and division, cells are able to respond to a variety of intracellular and extracellular stimuli. Significant progress has been made in the understanding of the biochemical mechanisms underlying mating-factor signal transduction in Saccharomyces cerevisiae. Some of t...
journal_title：Current opinion in cell biology
pub_type： 杂志文章,评审
doi：10.1016/0955-0674(94)90053-1
更新日期：1994-12-01 00:00:00
