Abstract:
:CHO SSF3 cells grow as a suspension culture in unmodified commercial medium with only low-molecular weight ingredients. Continuous serum-free culture unexpectedly induced expression of a low dihydrofolate reductase activity in the originally dhfr- CHO cells. Nevertheless, it was possible with methotrexate to induce amplification of a gene coding for the hybrid plasminogen activator K2tu-PA cotransfected with a dhfr gene. Expression of K2tu-PA expression was proportionally increased to that of dhfr, which was measured with fluorescent methotrexate. Because no serum proteases were present, secreted K2tu-PA was not converted to the enzymatically active form, but was exclusively recovered in proenzyme form.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Gandor C,Leist C,Fiechter A,Asselbergs FAdoi
10.1016/0014-5793(95)01328-8subject
Has Abstractpub_date
1995-12-27 00:00:00pages
290-4issue
3eissn
0014-5793issn
1873-3468pii
0014-5793(95)01328-8journal_volume
377pub_type
杂志文章相关文献
FEBS LETTERS文献大全abstract::Using the yeast two hybrid system and overlay assays we identified a putative rholrac effector, citron, which interacts with the GTP-bound forms of rho and rac1, but not with cdc42. Extensive homologies to known proteins were not observed. This 183 kDa protein contains a C6H2 zinc finger, a PH domain, and a long coile...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(95)01351-2
更新日期:1995-12-18 00:00:00
abstract::(-)-Epigallocatechin-3-O-gallate (EGCG) exhibits anti-tumor activity mediated via the 67-kDa laminin receptor (67LR). In this study, we found that 67LR protein levels are reduced by exposure to low O(2) levels (5%), without affecting the expression of HIF-1α. We also found that EGCG-induced anti-cancer activity is abr...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2012.07.065
更新日期:2012-09-21 00:00:00
abstract::Circular dichroism (CD) spectra have been obtained from several variants of green fluorescent protein: blue fluorescent protein (BFP), enhanced cyan fluorescent protein (CFP), enhanced green fluorescent protein (GFP), enhanced yellow fluorescent protein (YFP), all from Aequorea victoria, and the red fluorescent protei...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(02)02808-9
更新日期:2002-06-19 00:00:00
abstract::There is strong evidence of a key role for mitochondrial dysfunction in both sporadic and all forms of familial Parkinson's disease (PD). However, none of the clinical trials carried out with putative mitochondrial rescue agents have been successful. Firm establishment of a wet biomarker or a reliable readout from ima...
journal_title:FEBS letters
pub_type: 杂志文章,评审
doi:10.1002/1873-3468.12920
更新日期:2018-03-01 00:00:00
abstract::Tryptophan-rich antigens of malarial parasites interact with host molecules and play an important role in parasite survival. Merozoite expressed Plasmodium vivax tryptophan-rich antigen PvTRAg38 binds to human erythrocytes and facilitates parasite growth in a heterlologous Plasmodium falciparum culture system. Recentl...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1002/1873-3468.12053
更新日期:2016-01-01 00:00:00
abstract::Adenosine and ATP modulate cellular and tissue functions via specific P1 and P2 receptors, respectively. Although, in general, adenosine inhibits excitability and ATP functions as an excitatory transmitter in the central nervous system, little is known about the direct interaction between P1 and P2 receptors. We recen...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(02)03540-8
更新日期:2002-11-06 00:00:00
abstract::Photoaffinity labelling with [alpha-32P]GTP allowed to detect a 54 kDa GTP-binding protein in rat pancreatic plasma membranes and in pancreatic AR 4-2J cell membranes. Like the 42 and 48 kDa Gs alpha subunits and the 41 kDa Gi alpha subunit, this protein was absent from zymogen granule membranes. Contrastingly, a new ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(90)80362-m
更新日期:1990-10-01 00:00:00
abstract::To understand the role of nitric oxide (NO) in controlling the specific DNA-binding activities of transcriptional factors, we investigated the in vitro effect of the NO-donor sodium nitroprusside (SNP) on the AP-1 activity of cultured mouse cerebellar granule cells. A gel-mobility assay showed that SNP inhibited AP-1 ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(94)00839-6
更新日期:1994-08-29 00:00:00
abstract::We previously have shown that the overexpression of phospholipase C-gamma1 (PLC-gamma1) in rat 3Y1 fibroblasts results in malignant transformation (Chang, J.-S., Noh, D.Y., Park, I.A., Kim, M;.J., Song, H., Ryu, S.H. and Suh, P.-G. (1997) Cancer Res. 57, 5465-5468). The transformed cells, which initially are in an elo...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(99)01338-1
更新日期:1999-10-22 00:00:00
abstract::Aminopeptidase yscXVI was purified from the yeast Saccharomyces cerevisiae. By SDS-PAGE the enzyme has a molecular weight of 45,000 Da, and in chromatofocusing, elution was observed at pH 6.2. The synthetic substrate cystinyl-4-nitroanilide (Km 22.5 microM, Vmax 12.9 mU/mg) is cleaved most efficiently in the pH range ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(93)81566-i
更新日期:1993-05-10 00:00:00
abstract::Previously, several studies have demonstrated that autophosphorylation of the C-terminal tyrosine residues (Tyr1316 and Tyr1322) affects the signaling properties of the insulin receptor in vivo. To assess the biochemical consequences of the C-terminal phosphorylation in vitro, we have constructed, purified and charact...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(00)01879-2
更新日期:2000-08-11 00:00:00
abstract::ASP is a serine protease secreted by Aeromonas sobria, a sepsis-causing bacterium, and induces sepsis-mimicking disorders through plasma protein cleavage. The pathogen also secretes nASP that has a nick in the carboxy-terminal region. Compared with single-chain ASP (sASP), nASP had near-equivalent activity for small p...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2012.08.004
更新日期:2012-10-19 00:00:00
abstract::Curcumin, the yellow pigment from Curcuma longa, has been shown to possess tumoricidal activity. We have earlier reported the induction of apoptosis in AK-5, rat histiocytic cells by curcumin leading to the inhibition of tumor growth in vivo. In this study we have observed differential activation status in host macrop...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(00)02089-5
更新日期:2000-10-13 00:00:00
abstract::In thrombin-stimulated platelets alpha IIb beta 3 integrin engagement triggers both phosphatidylinositol 3',4'-bisphosphate synthesis and calpain activation. We checked the possible involvement of calpains in phosphatidylinositol 3-kinase signalling pathway using a cell permeant specific inhibitor of calpains, calpept...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(97)00079-3
更新日期:1997-03-03 00:00:00
abstract::The high affinity (low Km) cyclic GMP phosphodiesterase (PDE) is activated by GTP, while the cyclic AMP PDE is not. GTP and its hydrolysis-resistant analogue, guanylylimidodiphosphate (GppNHp), display a half-maximal stimulating effect at almost the same concentration (5 X 10(-6) M). The GTP stimulating effect is not ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(83)80574-2
更新日期:1983-07-04 00:00:00
abstract::Alternative splicing of tau exon 10 generates tau isoforms with three or four microtubule-binding repeats, named 3R- or 4R-tau. Normal adult human brain expresses equal levels of them. Imbalance of 3R-tau and 4R-tau associates with several tauopathies. Splicing factor 9G8 suppresses tau exon 10 inclusion and its funct...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2012.05.046
更新日期:2012-07-30 00:00:00
abstract::The fat mouse strain exhibits a late-onset obesity syndrome associated with a mutation in the gene encoding carboxypeptidase E (CPE). Since CPE plays a central role in the biosynthesis of a number of regulatory peptides, including gastrin, we examined the biogenesis and processing of progastrin in fat/fat mice by meas...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(97)01164-2
更新日期:1997-10-13 00:00:00
abstract::A gene encoding an antifreeze protein (AFP) was isolated from carrot (Daucus carota) using sequence information derived from the purified protein. The carrot AFP is highly similar to the polygalacturonase inhibitor protein (PGIP) family of apoplastic plant leucine-rich repeat (LRR) proteins. Expression of the AFP gene...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(99)00280-x
更新日期:1999-03-26 00:00:00
abstract::Almost all eukaryotic mRNAs acquire a poly(A) tail at the 3'-end by a concerted RNA processing event: cleavage and polyadenylation. The canonical PAP, PAPα, was considered the only nuclear PAP involved in general polyadenylation of mRNAs. A phosphoinositide-modulated nuclear PAP, Star-PAP, was then reported to regulat...
journal_title:FEBS letters
pub_type: 杂志文章,评审
doi:10.1016/j.febslet.2014.05.029
更新日期:2014-06-27 00:00:00
abstract::We previously obtained evidence for intrinsic aminopeptidase activity for leukotriene (LT)A4 hydrolase, an enzyme characterized to specifically catalyse the hydrolysis of LTA4 to LTB4, a chemotactic compound. From a sequence homology search between LTA4 hydrolase and several aminopeptidases, it became clear that they ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(92)80806-r
更新日期:1992-09-14 00:00:00
abstract::Human seminal fluid contains a number of tripeptide amides with similar structures to thyrotropin releasing hormone (TRH), two of which have been identified as pGlu-Glu-Pro amide and pGlu-Phe-Pro amide. To determine whether these peptides originate in the same tissues and have the same molecular origin, TRH-immunoreac...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(95)01468-3
更新日期:1996-01-22 00:00:00
abstract::The release of a GPI-linked oncofetal protein (PLAP) from HEp-2 cells has been studied as an indicator of endogenous PI-specific PLC activation. A non-hydrolysable GTP analogue, EGF and insulin all produced a dose-dependent release of PLAP from these cells. This indicates that an increase in PLC activity following eit...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(90)80927-b
更新日期:1990-07-16 00:00:00
abstract::Synaptotagmin I, the calcium sensor for neurotransmission, is palmitoylated. We have identified the palmitoylation sites as five cysteine residues located between the transmembrane and cytoplasmic regions. In contrast to wild-type synaptotagmin, the non-acylated mutant is not converted to the endoglycosidase-H-resista...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(03)00449-6
更新日期:2003-06-05 00:00:00
abstract::A chemokine receptor, CXCR4, and its endogenous ligand, stromal cell-derived factor-1 (SDF-1), have been recognized to be involved in the metastasis of several types of cancers. T140 analogs are peptidic CXCR4 antagonists composed of 14 amino acid residues that were previously developed as anti-HIV agents having inhib...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(03)00824-x
更新日期:2003-08-28 00:00:00
abstract::The integral membrane protein lactose permease of Escherichia coli was purified to homogeneity in detergent micelles. No other proteins could be detected in the final product. The molar ratio of lactose permease to lipid was less than 0.2 in detergent solution, thus the preparation was essentially lipid-free. All mole...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(88)81229-8
更新日期:1988-08-01 00:00:00
abstract::In vitro cultured blood cells for transfusion purposes provide a safe alternative to donor blood, particularly for patients who require recurrent transfusions, and can be used as carriers of therapeutic molecules. In vitro derivation of hematopoietic cell types from human-induced pluripotent stem cells (iPSCs) allows ...
journal_title:FEBS letters
pub_type: 杂志文章,评审
doi:10.1002/1873-3468.13599
更新日期:2019-12-01 00:00:00
abstract::We propose a dynamic model for the competition between exon-exon ligation and 3'-end hydrolysis valid for sequentially folded pre-mRNA introns of group I. This model accounts for the delay in the formation of conserved helix P10 until the 5' exon has been cleaved, a requirement to prevent hydrolysis at the 3' end of t...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(92)80360-s
更新日期:1992-02-03 00:00:00
abstract::Using a cDNA library from bovine adrenal medulla, and, subsequently, a bovine genomic library, we have isolated the gene coding for a non inactivating potassium channel. This gene encodes a 597-amino acid protein which we have called BAK5 as its sequence is very similar to members of Kv1.5 potassium channel family. Ne...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(94)01117-6
更新日期:1994-11-07 00:00:00
abstract::The adult liver-specific IGF-II promoter P1 is activated by CCAAT/Enhancer Binding Proteins alpha and beta. Here we present evidence that promoter P1, in addition to positively regulating elements, contains two elements of 67 nucleotides that form an inverted repeat (IR) and suppress P1 activity. The two IR elements a...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(96)00926-x
更新日期:1996-09-23 00:00:00
abstract::The structure of [Val1]gramicidin A incorporated into sodium dodecyl-d25 sulphate micelles has been studied by two-dimensional proton NMR spectroscopy. Analysis of nuclear Overhauser effects, spin-spin couplings and solvent accessibility of NH groups show that the conformation of the Na+ complex of gramicidin A in det...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(85)80702-x
更新日期:1985-07-08 00:00:00