Abstract:
:In the budding yeast Saccharomyces cerevisiae, mutations in the essential gene CDC1 cause defects in Golgi inheritance and actin polarization. However, the biochemical function of Cdc1p is unknown. Previous work showed that cdc1 mutants accumulate intracellular Ca(2+) and display enhanced sensitivity to the extracellular Mn(2+) concentration, suggesting that Cdc1p might regulate divalent cation homeostasis. By contrast, our data indicate that Cdc1p is a Mn(2+)-dependent protein that can affect Ca(2+) levels. We identified a cdc1 allele that activates Ca(2+) signaling but does not show enhanced sensitivity to the Mn(2+) concentration. Furthermore, our studies show that Cdc1p is an endoplasmic reticulum-localized transmembrane protein with a putative phosphoesterase domain facing the lumen. cdc1 mutant cells accumulate an unidentified phospholipid, suggesting that Cdc1p may be a lipid phosphatase. Previous work showed that deletion of the plasma membrane Ca(2+) channel Cch1p partially suppressed the cdc1 growth phenotype, and we find that deletion of Cch1p also suppresses the Golgi inheritance and actin polarization phenotypes. The combined data fit a model in which the cdc1 mutant phenotypes result from accumulation of a phosphorylated lipid that activates Ca(2+) signaling.
journal_name
Mol Cell Bioljournal_title
Molecular and cellular biologyauthors
Losev E,Papanikou E,Rossanese OW,Glick BSdoi
10.1128/MCB.00567-07subject
Has Abstractpub_date
2008-05-01 00:00:00pages
3336-43issue
10eissn
0270-7306issn
1098-5549pii
MCB.00567-07journal_volume
28pub_type
杂志文章abstract::The RAD1 gene of Saccharomyces cerevisiae is required for the incision step of excision repair of damaged DNA. In this paper, we report our observations on the effect of the RAD1 gene on genetic recombination. Mitotic intrachromosomal and interchromosomal recombination in RAD+, rad1, rad52, and other rad mutant strain...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.8.9.3619
更新日期:1988-09-01 00:00:00
abstract::Several factors that mediate activation by nuclear receptors also modify the chemical and structural composition of chromatin. Prominent in this diverse group is the steroid receptor coactivator 1 (SRC-1) family, which interact with agonist-bound nuclear receptors, thereby coupling them to multifunctional transcriptio...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.20.20.7541-7549.2000
更新日期:2000-10-01 00:00:00
abstract::We have cloned CDC9, the structural gene for Saccharomyces cerevisiae DNA ligase, and investigated its transcriptional regulation both as a function of cell cycle stage and after UV irradiation. The steady-state level of DNA ligase mRNA increases at least fourfold in late G1, after the completion of start but before S...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.5.1.226
更新日期:1985-01-01 00:00:00
abstract::Filopodia are dynamic structures found at the leading edges of most migrating cells. IRSp53 plays a role in filopodium dynamics by coupling actin elongation with membrane protrusion. IRSp53 is a Cdc42 effector protein that contains an N-terminal inverse-BAR (Bin-amphipysin-Rvs) domain (IRSp53/MIM homology domain [IMD]...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01574-08
更新日期:2010-02-01 00:00:00
abstract::Iron is an essential micronutrient for all eukaryotic organisms because it participates as a redox-active cofactor in many biological processes, including DNA replication and repair. Eukaryotic ribonucleotide reductases (RNRs) are Fe-dependent enzymes that catalyze deoxyribonucleoside diphosphate (dNDP) synthesis. We ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00472-14
更新日期:2014-09-01 00:00:00
abstract::B-lymphocyte development requires the basic helix-loop-helix proteins encoded by the E2A gene. In this study, the control mechanism of E2A was further explored by disruption of the E2A-related genes, E2-2 and HEB. In contrast to E2A, E2-2 and HEB are not essential for the establishment of the B-cell lineage. However, ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.16.6.2898
更新日期:1996-06-01 00:00:00
abstract::We have probed the accessibility of the genes for rRNA in Physarum polycephalum by using the photoreactive DNA cross-linking agent 4,5',8-trimethyl psoralen. Nuclei isolated from actively growing Physarum were treated with trimethyl psoralen and irradiated with 360-nm light in order to form cross-links. The palindromi...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.2.3.211
更新日期:1982-03-01 00:00:00
abstract::Drugs that produce covalent interstrand cross-links (ICLs) in DNA remain central to the treatment of cancer, but the cell cycle checkpoints activated by ICLs have received little attention. We have used the fission yeast, Schizosaccharomyces pombe, to elucidate the checkpoint responses to the ICL-inducing anticancer d...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.23.13.4728-4737.2003
更新日期:2003-07-01 00:00:00
abstract::Histone acetylation provides a switch between transcriptionally repressive and permissive chromatin. By regulating the chromatin structure at specific promoters, histone acetyltransferases (HATs) carry out important functions during differentiation and development of higher eukaryotes. HAT complexes are present in org...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00130-06
更新日期:2006-10-01 00:00:00
abstract::We set up an alternative splicing system in vitro in which the relative amounts of two spliced RNAs, one containing and the other lacking a particular exon, were directly proportional to the length of an inverted repeat inserted into the flanking introns. We then used the system to measure the effect of intramolecular...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.7.9.3194
更新日期:1987-09-01 00:00:00
abstract::Sortilin is a member of the Vps10p domain family of neuropeptide and neurotrophin binding neuronal receptors. The family members interact with and partly share a variety of ligands and partake in intracellular sorting and protein transport as well as in transmembrane signal transduction. Thus, sortilin mediates the tr...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00274-10
更新日期:2010-09-01 00:00:00
abstract::Malignant melanoma, an aggressive and increasingly common cancer, is characterized by a strikingly high rate (70%) of mutations in BRAF, a key component of the mitogen-activated protein (MAP) kinase signaling pathway. How signaling events downstream from BRAF affect the underlying program of gene expression is poorly ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.24.7.2923-2931.2004
更新日期:2004-04-01 00:00:00
abstract::Protein phosphatase 2A (PP2A) is a multimeric serine/threonine phosphatase that carries out multiple functions. Although numerous observations suggest that PP2A plays a major role in downregulation of the mitogen-activated protein (MAP) kinase pathway, the precise mechanisms are unknown. To clarify the role of PP2A in...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.22.7.2375-2387.2002
更新日期:2002-04-01 00:00:00
abstract::The PKC1 gene of Saccharomyces cerevisiae encodes a homolog of mammalian protein kinase C that is required for normal growth and division of yeast cells. We report here the isolation of the yeast MKK1 and MKK2 (for mitogen-activated protein [MAP] kinase-kinase) genes which, when overexpressed, suppress the cell lysis ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.13.5.3076
更新日期:1993-05-01 00:00:00
abstract::Spinal muscular atrophy (SMA) is an inherited motor neuron disease caused by homozygous loss of the Survival Motor Neuron 1 (SMN1) gene. In the absence of SMN1, inefficient inclusion of exon 7 in transcripts from the nearly identical SMN2 gene results in ubiquitous SMN decrease but selective motor neuron degeneration....
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.06077-11
更新日期:2012-01-01 00:00:00
abstract::It is thought that degradation of nuclear proteins by the ubiquitylation system requires nuclear-cytoplasmic trafficking of E3 ubiquitin ligases. The von Hippel-Lindau (VHL) tumor suppressor protein is the substrate recognition component of a Cullin-2-containing E3 ubiquitin ligase that recruits hypoxia-inducible fact...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01044-07
更新日期:2008-01-01 00:00:00
abstract::One of the central questions in eukaryotic transcription is how activators can transmit their signal to stimulate gene expression in the context of chromatin. The multisubunit SAGA coactivator complex has both histone acetyltransferase and deubiquitination activities and remodels chromatin to allow transcription. Whet...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01076-08
更新日期:2009-03-01 00:00:00
abstract::Over 400 Krüppel-associated box zinc finger proteins (KRAB-ZFPs) are encoded in mammalian genomes. While KRAB-ZFPs strongly repress transcription in vitro, little is known about their biological function or gene targets in vivo. Regulator of sex limitation 1 (Rsl1), one of the first KRAB-Zfp genes assigned a physiolog...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00615-12
更新日期:2012-09-01 00:00:00
abstract::To investigate the transcriptional program underlying thyroid hormone (T3)-induced cell proliferation, cDNA microarrays were used to survey the temporal expression profiles of 4,400 genes. Of 358 responsive genes identified, 88% had not previously been reported to be transcriptionally or functionally modulated by T3. ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.21.19.6626-6639.2001
更新日期:2001-10-01 00:00:00
abstract::Recombinant type 1 transforming growth factor beta (TGF-beta) was expressed to high levels in CHO cells by using dihydrofolate reductase (dhfr) gene amplification. The expression plasmid was derived from the pSV2 vectors and contained, in tandem, the simian TGF-beta and mouse dhfr cDNAs. Transcription of both cDNAs wa...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.7.10.3418
更新日期:1987-10-01 00:00:00
abstract::Serum induction of c-jun expression in HeLa cells requires a MEF2 site at -59 in the c-jun promoter. MEF2 sites, found in many muscle-specific enhancers, are bound by a family of transcription factors, MEF2A through -D, which are related to serum response factor in their DNA binding domains. We have found that MEF2D i...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.15.6.2907
更新日期:1995-06-01 00:00:00
abstract::Mice lacking neuroD2, a basic helix-loop-helix transcription factor involved in brain development, show growth retardation and other abnormalities consistent with hypothalamic-pituitary-thyroid (HPT) axis dysfunction. neuroD2 is expressed in the paraventricular hypothalamic nuclei, the anterior lobe of pituitary, and ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.02158-05
更新日期:2006-06-01 00:00:00
abstract::To determine the effect of gene order on globin gene developmental regulation, we produced transgenic mice containing two tandemly arranged gamma- or beta-globin or gamma beta- and beta gamma-globin genes linked to a 2.5-kb cassette containing sequences of the locus control region (LCR). Analysis of constructs contain...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.13.8.4836
更新日期:1993-08-01 00:00:00
abstract::Human antigen R (ELAVL1; HuR) is perhaps the best-characterized RNA-binding protein. Through its overexpression in various tumor types, HuR promotes posttranscriptional regulation of target genes in multiple core signaling pathways associated with tumor progression. The role of HuR overexpression in pancreatic tumorig...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00427-17
更新日期:2018-01-16 00:00:00
abstract::The divergently transcribed DIT1 and DIT2 genes of Saccharomyces cerevisiae, which belong to the mid-late class of sporulation-specific genes, are subject to Ssn6-Tup1-mediated repression in mitotic cells. The Ssn6-Tup1 complex, which is required for repression of diverse sets of coordinately regulated genes, is known...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.25.15.6772-6788.2005
更新日期:2005-08-01 00:00:00
abstract::The dynamic SCF (Skp1-cullin1-F-box protein) assembly is controlled by cycles of cullin neddylation/deneddylation based on the deneddylation activity of the COP9 signalosome (CSN) and global sequestration of cullins by CAND1. However, acceptance of this prediction was hampered by the results of recent studies, and the...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00109-17
更新日期:2017-11-13 00:00:00
abstract::Cell polarity plays a critical role in the development of all metazoans; however, the mechanisms of cell polarity and the specific role of cell polarity pathways in mammalian organisms are still poorly understood. Lethal giant larvae (Lgl) is an apical-basal polarity gene identified in Drosophila, where it functions a...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.05431-11
更新日期:2011-07-01 00:00:00
abstract::NMYC is a gene whose amplification and overexpression have been implicated in the generation of certain human malignancies. Little is known of how the expression of NMYC is normally controlled. We have therefore characterized transcription from the gene and the structure and stability of the resulting mRNAs. Transcrip...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.7.12.4266
更新日期:1987-12-01 00:00:00
abstract::Fibroblast growth factor 1 (FGF-1) is a powerful angiogenic factor whose gene structure contains four promoters, giving rise to a process of alternative splicing resulting in four mRNAs with alternative 5' untranslated regions (5' UTRs). Here we have identified, by using double luciferase bicistronic vectors, the pres...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.24.17.7622-7635.2004
更新日期:2004-09-01 00:00:00
abstract::Spt6 is a highly conserved histone chaperone that interacts directly with both RNA polymerase II and histones to regulate gene expression. To gain a comprehensive understanding of the roles of Spt6, we performed genome-wide analyses of transcription, chromatin structure, and histone modifications in a Schizosaccharomy...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01068-13
更新日期:2013-12-01 00:00:00