Abstract:
:The phosphatidylinositol 4,5-bisphosphate (PtdIns-P2)-regulated actin-binding protein gelsolin and most phosphoinositide-specific phospholipases C (PLCs) comprise a basic amino acid motif ((K/R)xxxKxK(K/R); x denotes any amino acid) which was previously suggested to represent a PtdInsP2-binding site commonly present in these proteins. We have challenged this hypothesis for PLC beta 2 by replacing one or several residues of this motif (KILIKNKK; residues 457-464) and examining the functional consequences of these alterations. The results show that the integrity of the basic motif is important for PtdInsP2 hydrolysis by PLC beta 2. Replacement of lysines 463 or 461 by arginine led to reduction or complete loss, respectively, of enzyme activity. The results provide further support to the concept that the function of the basic motif within the various PLCs is to bind the enzyme substrate PtdInsP2.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Simões AP,Camps M,Schnabel P,Gierschik Pdoi
10.1016/0014-5793(95)00464-ksubject
Has Abstractpub_date
1995-05-29 00:00:00pages
155-8issue
2-3eissn
0014-5793issn
1873-3468journal_volume
365pub_type
杂志文章相关文献
FEBS LETTERS文献大全abstract::Activator protein 1 (AP1) is a complex of Fos and Jun, and it regulates the transcription of genes possessing the AP1-binding sequence. The purpose of this study was to detect living cells that express AP1 after stimulation with a tumor promoter. The Fos and Jun components of AP1 were induced rapidly and transiently i...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(96)00487-5
更新日期:1996-06-10 00:00:00
abstract::The effect of lysophosphatidic acid (LPA) on the preimplantation development of mouse embryos was examined. The blastocyst rates from 2-cell and 4-cell stage embryos were significantly higher in the presence of LPA at the pronuclear stage. However, the blastocyst rate from 4-cell stage embryos was significantly lower ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(94)00815-9
更新日期:1994-08-29 00:00:00
abstract::Human monocyte-macrophages were incubated for 24 h in Ham's F-10 medium with human low-density lipoprotein (LDL) in the presence or absence of beta-carotene, canthaxanthin or zeaxanthin, at final concentrations of 2.5, 12.5 and 25 mg/l. LDL oxidation, measured by agarose gel electrophoresis, the thiobarbituric acid as...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(96)01488-3
更新日期:1997-01-20 00:00:00
abstract::Insulin resistant states are associated with an increase in the beta cell mass and also high levels of circulating insulin. Ultimately the beta cells undergo a failure that leads to diabetes. At this stage, a question arises if those persistent high levels of circulating insulin may contribute to beta cell damage. To ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2008.10.020
更新日期:2008-11-26 00:00:00
abstract::Affinity labelling of E. coli ribosomes with the 2',3'-O-[4-(N-2-chloroethyl)-N-methylamino]benzylidene derivative of AUGU6 was studied within the initiation complex (complex I) obtained by using fMet-tRNAMetf and initiation factors and within the pretranslocational complex (complex II) obtained by treatment of comple...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(86)80714-1
更新日期:1986-07-07 00:00:00
abstract::A simple method for isolation and fluorescence labelling of Leydig cells (L-cells) from rat testes was developed. Lateral diffusion coefficients of both lipid and protein membrane fluorescent probes were measured by the method of fluorescence recovery after photobleaching (FRAP). Age-dependent changes in diffusibility...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(87)80189-8
更新日期:1987-09-28 00:00:00
abstract::Xenopus oocytes expressing neuronal alpha 1C, alpha 2 and beta 1b calcium channel subunit cDNAs were used in this study. During two-electric voltage clamp recording the oocyte was injected with 10-20 nl of a 100 mM BAPTA solution. Under these conditions, the endogenous Ca-activated Cl current was completely suppressed...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(94)00357-2
更新日期:1994-05-09 00:00:00
abstract::The crystal structure of the free form of IF1 from Mycobacterium tuberculosis has been determined at 1.47 A resolution. The structure adopts the expected OB fold and matches the high structural conservation among IF1 orthologues. In order to further explore the function of Mtb-IF1, we built a model of its interaction ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2010.01.051
更新日期:2010-03-05 00:00:00
abstract::hsp25 is a small, growth-related, mammalian stress protein which is highly accumulated in the stationary phase of Ehrlich ascites tumor in vivo. Ehrlich ascites cells cultivated in vitro under conditions of continuous exponential growth express hsp25 only at a low level. These cells were stably transfected with an euk...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(92)80793-g
更新日期:1992-09-14 00:00:00
abstract::Structural gene expression of human immunodeficiency virus type 1 (HIV-1) requires a viral regulatory protein, Rev transactivator. We investigated Rev-dependency of HIV-1 gene expression by various reporter systems. Expression of unspliced and single-spliced viral mRNAs was demonstrated to be differentially dependent ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(95)00444-e
更新日期:1995-05-29 00:00:00
abstract::Phospholipase C(gamma)2 (PLCgamma2) is a phospholipid-converting enzyme which, upon receptor stimulation, is activated within membrane-bound signalling complexes. In contrast to the highly ubiquitous PLCgamma1, PLCgamma2 is expressed predominantly in B-lymphocytes. Associated with antigen-coupling receptors it is acti...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(96)01276-8
更新日期:1996-12-09 00:00:00
abstract::Tropomodulin, the P-end (slow-growing end)-capping protein of the actin-tropomyosin filament, and its fragment (C20) of the C-terminal half were studied by synchrotron small-angle X-ray scattering, restoring low-resolution shapes using an ab initio shape-determining procedure. Tropomodulin is elongated (115 A long) an...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(01)02498-x
更新日期:2001-06-01 00:00:00
abstract::The interaction of vinculin with actin filaments was investigated by methods which exclude interference by contaminating proteins which may occur in vinculin preparations. Vinculin which was blotted from SDS-polyacrylamide gels onto nitrocellulose, was stained specifically by fluorescently labeled polymeric actin (100...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(88)80595-7
更新日期:1988-02-08 00:00:00
abstract::The rise of antibiotic resistance combined with the lack of new products entering the market has led to bacterial infections becoming one of the biggest threats to global health. Therefore, there is an urgent need to identify novel antibiotic targets, such as dihydrodipicolinate synthase (DHDPS), an enzyme involved in...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1002/1873-3468.13733
更新日期:2020-05-01 00:00:00
abstract::Ribosomal protection proteins (RPPs) confer bacterial resistance to tetracycline by releasing this antibiotic from ribosomes stalled in protein synthesis. RPPs share structural similarity to elongation factor G (EF-G), which promotes ribosomal translocation during normal protein synthesis. We constructed and functiona...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2008.03.023
更新日期:2008-04-16 00:00:00
abstract::We have used a panel of monoclonal antibodies in a study of the expression of multiple tubulins in Physarum polycephalum. Three anti-beta-tubulin monoclonal antibodies, DM1B, DM3B3 and KMX-1 all reacted with the beta 1-tubulin isotypes expressed in both myxamoebae and plasmodia. However, these antibodies showed a spec...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(85)81244-8
更新日期:1985-08-05 00:00:00
abstract::Prokaryotic aminoacylated-transfer RNAs often need to be efficiently segregated between translation and other cellular biosynthetic pathways. Many clinically relevant bacteria, including Streptococcus pneumoniae, Staphylococcus aureus, Enterococcus faecalis and Pseudomonas aeruginosa direct some aminoacylated-tRNA spe...
journal_title:FEBS letters
pub_type: 杂志文章,评审
doi:10.1016/j.febslet.2013.07.036
更新日期:2013-09-17 00:00:00
abstract::Stable liposomes were rendered pH-sensitive by complexation to a polymer that undergoes marked temperature- and pH-dependent water solubility changes. The N-isopropylacrylamide-methacrylic acid copolymer was prepared with or without octadecyl acrylate. At pH below the phase transition of the polymer, egg phosphatidylc...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(97)01520-2
更新日期:1998-01-02 00:00:00
abstract::Phosphorylations catalyzed by cAMP-dependent protein kinase are essential for sperm motility, and type II cAMP-dependent protein kinase in mature sperm has been shown to be firmly bound to the flagellum via the regulatory subunit, RII. The present study documents high-levelled expression of a human, testis-specific RI...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(89)80253-4
更新日期:1989-03-27 00:00:00
abstract::Differentiation enhancing factor (DEF) is a 29 kDa protein expressed in murine erythroleukemia (MEL) cells and active in promoting a significant increase in the rate of hexamethylenebisacetamide induced differentiation of these cells. The factor was recently shown to possess an amino acid sequence identical to that re...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(95)00716-m
更新日期:1995-07-24 00:00:00
abstract::The KDEL receptor is a seven-transmembrane-domain protein that was first described about 20 years ago. Its well-known function is to retrotransport chaperones from the Golgi complex to the endoplasmic reticulum. Recent studies, however, have suggested that the KDEL receptor has additional functions. Indeed, we have de...
journal_title:FEBS letters
pub_type: 杂志文章,评审
doi:10.1016/j.febslet.2009.10.053
更新日期:2009-12-03 00:00:00
abstract::When cultured porcine aortic endothelial cells (ECs) were incubated with porcine big endothelin-1 (bit ET-1(1-39)), there was a time-dependent increase in immunoreactive (IR)-ET in the culture supernatant, in addition to an endogenous IR-ET release fron the cells. Reverse-phase HPLC of the culture supernatant revealed...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(91)81149-3
更新日期:1991-11-18 00:00:00
abstract::A cDNA was cloned from a rabbit spleen cDNA library which encoded a G-protein alpha subunit peptide of 374 amino acids, that at the peptide level exhibited 86% and 79% identity with human Galpha16 and mouse G(alpha)15, respectively. The rabbit G(alpha)subunit cDNA was subcloned into a mammalian expression vector and t...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(99)01317-4
更新日期:1999-10-22 00:00:00
abstract::Rat liver plasma membrane removed sialic acid from mixed bovine brain gangliosides more efficiently than from sialyllactose and orosomucoid with an optimal pH of 4.5. When individual gangliosides, each labeled with [14C]sialic acid or [3H]sphingosine, were tested, not only GD1a and GM3 but also GM2 and GM1, both of wh...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(86)80985-1
更新日期:1986-10-06 00:00:00
abstract::To characterize energy metabolism in rat brown adipose tissue (BAT), we carried out differential screening of a cDNA library of BAT with a cDNA probe of white adipose tissue (WAT) and isolated one cDNA clone. It contained a single open reading frame of 2,316 bases which encodes a protein of 88.2 kDa. The predicted ami...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(95)00277-g
更新日期:1995-04-17 00:00:00
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::The structural basis of GABA-gated chloride channels in mammalian brain is presently explored by the functional expression of cDNAs coding for the alpha, beta or gamma-subunits of the receptor and their isoforms. In this context, we expressed the cloned cDNA coding for the rat beta 1-subunit of the GABAA receptor in t...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(89)81576-5
更新日期:1989-11-06 00:00:00
abstract::C6 rat glioma cells persistently infected with subacute sclerosing panencephalitis virus (C6/SSPE) were treated with measles antiserum and purified anti-measles IgG. This stimulated phosphoinositide breakdown and an increase in inositol phosphates. In uninfected C6 cells, however, only fetal calf serum (FCS), but not ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(89)81330-4
更新日期:1989-04-24 00:00:00
abstract::Fourier transform infrared spectroscopy has been used to study the solution structure and thermal stability of the extracellular fragment of human transferrin receptor (tfRt) at extracellular and endosomal pH. At extracellular pH tfRt is composed of 56% alpha-helix, 19% beta-sheet and 14% turns. Upon acidification to ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(94)00774-8
更新日期:1994-08-22 00:00:00
abstract::Since the discovery of the new members of the UCP (uncoupling protein) family, UCP2 and UCP3, very few studies have dealt with the regulation of their expression. Bearing this in mind, administration of a single intravenous injection of TNF-alpha (100 microg/kg body weight) to rats resulted in a significant increase i...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(98)01485-9
更新日期:1998-12-04 00:00:00