Abstract:
:The Asf1 and Rad6 pathways have been implicated in a number of common processes such as suppression of gross chromosomal rearrangements (GCRs), DNA repair, modification of chromatin, and proper checkpoint functions. We examined the relationship between Asf1 and different gene products implicated in postreplication repair (PRR) pathways in the suppression of GCRs, checkpoint function, sensitivity to hydroxyurea (HU) and methyl methanesulfonate (MMS), and ubiquitination of proliferating cell nuclear antigen (PCNA). We found that defects in Rad6 PRR pathway and Siz1/Srs2 homologous recombination suppression (HRS) pathway genes suppressed the increased GCR rates seen in asf1 mutants, which was independent of translesion bypass polymerases but showed an increased dependency on Dun1. Combining an asf1 deletion with different PRR mutations resulted in a synergistic increase in sensitivity to chronic HU and MMS treatment; however, these double mutants were not checkpoint defective, since they were capable of recovering from acute treatment with HU. Interestingly, we found that Asf1 and Rad6 cooperate in ubiquitination of PCNA, indicating that Rad6 and Asf1 function in parallel pathways that ubiquitinate PCNA. Our results show that ASF1 probably contributes to the maintenance of genome stability through multiple mechanisms, some of which involve the PRR and HRS pathways.
journal_name
Mol Cell Bioljournal_title
Molecular and cellular biologyauthors
Kats ES,Enserink JM,Martinez S,Kolodner RDdoi
10.1128/MCB.00894-09subject
Has Abstractpub_date
2009-10-01 00:00:00pages
5226-37issue
19eissn
0270-7306issn
1098-5549pii
MCB.00894-09journal_volume
29pub_type
杂志文章abstract::Alkylpurine-DNA-N-glycosylase (APNG) null mice have been generated by homologous recombination in embryonic stem cells. The null status of the animals was confirmed at the mRNA level by reverse transcription-PCR and by the inability of cell extracts of tissues from the knockout (ko) animals to release 3-methyladenine ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.18.10.5828
更新日期:1998-10-01 00:00:00
abstract::Unlike other eukaryotes, the protein-coding genes of Trypanosoma cruzi are arranged in large polycistronic gene clusters transcribed by polymerase II (Pol II). Thus, it is thought that trypanosomes rely solely on posttranscriptional processes to regulate gene expression. Here, we show that the glucosylated thymine DNA...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01277-10
更新日期:2011-04-01 00:00:00
abstract::A cDNA encoding a novel Krüppel-type zinc finger protein, FKLF, was cloned from fetal globin-expressing human fetal erythroid cells. The deduced polypeptide sequence composed of 512 amino acids revealed that, like Sp1 and EKLF, FKLF has three contiguous zinc fingers at the near carboxyl-terminal end. A long amino-term...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.19.5.3571
更新日期:1999-05-01 00:00:00
abstract::The packaging of the eukaryotic genome into chromatin is likely to be important for the maintenance of genomic integrity. Chromatin structures are assembled onto newly synthesized DNA by the action of chromatin assembly factors, including anti-silencing function 1 (ASF1). To investigate the role of chromatin structure...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.24.23.10313-10327.2004
更新日期:2004-12-01 00:00:00
abstract::The doublesex and mab-3 related transcription factor 1 (Dmrt1) is a putative transcriptional regulator that is expressed exclusively in the gonads and is required for postnatal testis differentiation. Here we describe the transcriptional mechanisms regulating testis-specific expression of the Dmrt1 gene. Transient-tra...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.24.1.377-388.2004
更新日期:2004-01-01 00:00:00
abstract::The first intron of the human collagen alpha 1(I) gene contains several positively and negatively acting elements. We have studied the transcription of collagen-human growth hormone fusion genes, containing deletions and rearrangements of collagen intronic sequences, by transient transfection of chick tendon fibroblas...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.8.11.4851
更新日期:1988-11-01 00:00:00
abstract::Eukaryotic elongation factor 1 alpha 2 (eEF1A2) is a transforming gene product that is highly expressed in human tumors of the ovary, lung, and breast. eEF1A2 also stimulates actin remodeling, and the expression of this factor is sufficient to induce the formation of filopodia, long cellular processes composed of bund...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00150-08
更新日期:2008-07-01 00:00:00
abstract::Glucocorticoid-induced leucine zipper (GILZ) is a leucine zipper protein, whose expression is augmented by dexamethasone (DEX) treatment and downregulated by T-cell receptor (TCR) triggering. Stable expression of GILZ in T cells mimics some of the effects of glucocorticoid hormones (GCH) in GCH-mediated immunosuppress...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.22.22.7929-7941.2002
更新日期:2002-11-01 00:00:00
abstract::Recognition of gene promoters by RNA polymerase II is mediated by general transcription factor IID (TFIID), which has been thought to be a static complex and to play a passive role in the regulation of gene expression under the instruction of gene-specific transcription factors. Here we show that transforming growth f...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00449-17
更新日期:2018-02-12 00:00:00
abstract::Introduction of simian virus 40 T antigen into rodent fibroblasts gives rise to cells that can proliferate indefinitely but are dependent upon it for maintenance of their growth once the normal mitotic life span has elapsed. Inactivation of T antigen in these immortalized cells causes rapid and irreversible cessation ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.16.9.5127
更新日期:1996-09-01 00:00:00
abstract::We sought to study the binding constraints placed on the nine-zinc-finger protein transcription factor IIIA (TFIIIA) by a histone octamer. To this end, five overlapping fragments of the Xenopus laevis oocyte and somatic 5S rRNA genes were reconstituted into nucleosomes, and it was subsequently shown that nucleosome tr...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.18.3.1156
更新日期:1998-03-01 00:00:00
abstract::The adenovirus EIa gene products activate transcription from the viral EIII and EIIaE promoters. We studied the mechanism of this stimulation by constructing a series of chimeric promoter recombinants containing the upstream regions of the EIII and EIIaE promoters linked to the TATA box-start-site regions of the viral...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.6.1.201
更新日期:1986-01-01 00:00:00
abstract::Ribosome biogenesis in eukaryotes is a major cellular activity mobilizing the products of over 200 transcriptionally coregulated genes referred to as the rRNA and ribosome biosynthesis regulon. We investigated the function of an essential, uncharacterized gene of this regulon, renamed RRP36. We show that the Rrp36p pr...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00999-09
更新日期:2010-03-01 00:00:00
abstract::Both cyclin D1 and the transcription factor C/EBPβ are required for mammary epithelial cell differentiation; however, the pathway in which they operate is uncertain. Previous analyses of the patterns of gene expression in human tumors suggested a connection between cyclin D1 overexpression and C/EBPβ, but whether this...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00039-14
更新日期:2014-08-01 00:00:00
abstract::G(1)-specific transcription in the budding yeast Saccharomyces cerevisiae depends upon SBF and MBF. Whereas inactivation of SBF-regulated genes during the G(1)/S transition depends upon mitotic B-type cyclins, inactivation of MBF has been reported to involve multiple regulators, Nrm1 and Stb1. Nrm1 is a transcriptiona...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00211-08
更新日期:2008-11-01 00:00:00
abstract::The alpha-myosin heavy-chain (alpha-MHC) gene is the major structural protein in the adult rodent myocardium. Its expression is restricted to the heart by a complex interplay of trans-acting factors and their cis-acting sites. However, to date, the factors that have been shown to regulate expression of this gene have ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.14.7.4947
更新日期:1994-07-01 00:00:00
abstract::The Son of sevenless proteins (Sos) are guanine nucleotide exchange factors involved in the activation of Ras by cytoplasmic and receptor tyrosine kinases. Growth factor stimulation rapidly induces the phosphorylation of Sos on multiple serine and threonine sites. Previous studies have demonstrated that growth factor-...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.16.10.5674
更新日期:1996-10-01 00:00:00
abstract::The relationship between chromatin remodeling and histone acetylation at the yeast CUP1 gene was addressed. CUP1 encodes a metallothionein required for cell growth at high copper concentrations. Induction of CUP1 with copper resulted in targeted acetylation of both H3 and H4 at the CUP1 promoter. Nucleosomes containin...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.22.18.6406-6416.2002
更新日期:2002-09-01 00:00:00
abstract::CD8+ T-cell apoptosis is essential for the contraction phase of the immune response, yet the initiating signals and precise pathways involved are unresolved. The ST3Gal-I sialyltransferase is a candidate mechanistic component and catalyzes sialic acid addition to core 1 O-glycans during protein O glycosylation. ST3Gal...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01750-06
更新日期:2007-02-01 00:00:00
abstract::We investigated the possible interactions between pp39mos and p34cdc2 kinase in NIH 3T3 cells transformed by c-mosxe. pp39mos is coprecipitated with p34cdc2 when using either anti-PSTAIR antibody or p13suc1-Sepharose beads. Likewise, p34cdc2 is coprecipitated with pp39mos when using anti-mos antibody. However, pp39mos...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.12.8.3583
更新日期:1992-08-01 00:00:00
abstract::Tumor progression locus 2 (TPL-2) functions as a MEK-1/2 kinase, which is essential for Toll-like receptor 4 (TLR4) activation of extracellular signal-regulated kinase 1 and 2 (ERK-1/2) mitogen-activated protein (MAP) kinases in lipopolysaccharide (LPS)-stimulated macrophages and for inducing the production of the pro...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01065-12
更新日期:2012-11-01 00:00:00
abstract::During investigations on the regulation of the Pax-6 gene, we characterized a cDNA from quail neuroretina showing a 5' untranslated region distinct from that previously described and initiated from an internal promoter. Using RNase protection and primer extension mapping, we localized this second quail Pax-6 promoter,...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.15.6.3344
更新日期:1995-06-01 00:00:00
abstract::The regulation of a thyroid hormone-responsive gene in rats, designated spot 14, was explored. The expression of this gene in liver is rapidly (less than 10 min) and markedly (greater than 10-fold) altered by the administration of 3,5,3'-triiodo-L-thyronine (T3) to hypothyroid rats (P. Narayan, C. W. Liaw, and H. C. T...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.5.10.2642
更新日期:1985-10-01 00:00:00
abstract::The Sry-related high-mobility-group box transcription factor Sox9 recruits the redundant L-Sox5 and Sox6 proteins to effect chondrogenesis, but the mode of action of the trio remains unclear. We identify here a highly conserved 359-bp sequence 10 kb upstream of the Agc1 gene for aggrecan, a most essential cartilage pr...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00695-08
更新日期:2008-08-01 00:00:00
abstract::A cDNA library enriched with Myc-responsive cDNAs but depleted of myc cDNAs was used in a functional screen for growth enhancement in c-myc-null cells. A cDNA clone for mitochondrial serine hydroxymethyltransferase (mSHMT) that was capable of partial complementation of the growth defects of c-myc-null cells was identi...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.22.16.5793-5800.2002
更新日期:2002-08-01 00:00:00
abstract::IME1 encodes a transcriptional activator required for the transcription of meiosis-specific genes and initiation of meiosis in Saccharomyces cerevisiae. The transcription of IME1 is repressed in the presence of glucose, and a low basal level of IME1 RNA is observed in vegetative cultures with acetate as the sole carbo...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.18.4.1985
更新日期:1998-04-01 00:00:00
abstract::Ikaros (Ik) is a critical regulator of hematopoietic gene expression. Here, we established that the Ik interactions with GATA transcription factors and cyclin-dependent kinase 9 (Cdk9), a component of the positive transcription elongation factor b (P-TEFb), are required for transcriptional activation of Ik target gene...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00296-13
更新日期:2013-08-01 00:00:00
abstract::RAG1 and RAG2 catalyze the first DNA cleavage steps in V(D)J recombination. We demonstrate that the isolated central domain of RAG1 has inherent single-stranded (ss) DNA cleavage activity, which does not require, but is enhanced by, RAG2. The central domain, therefore, contains the active-site residues necessary to pe...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.24.15.6850-6860.2004
更新日期:2004-08-01 00:00:00
abstract::B52, an essential SR protein of Drosophila melanogaster, stimulates pre-mRNA splicing in splicing-deficient mammalian S100 extracts. Surprisingly, mutant larvae depleted of B52 were found to be capable of splicing at least several pre-mRNAs tested (H. Z. Ring and J. T. Lis, Mol. Cell. Biol. 14:7499-7506, 1994). In a h...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.20.1.181-186.2000
更新日期:2000-01-01 00:00:00
abstract::The heterochromatic domains of Drosophila melanogaster (pericentric heterochromatin, telomeres, and the fourth chromosome) are characterized by histone hypoacetylation, high levels of histone H3 methylated on lysine 9 (H3-mK9), and association with heterochromatin protein 1 (HP1). While the specific interaction of HP1...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.24.18.8210-8220.2004
更新日期:2004-09-01 00:00:00