Abstract:
:A novel peptide from Centruroides noxius Hoffmann scorpion venom was isolated and sequenced. The 37 amino acid peptide belongs to the charybdotoxin sub-family (alphaKTx1) and was numbered member 11. alphaKTx1.11 has 75% sequence identity with iberiotoxin and 54% with charybdotoxin. alphaKTx1.11 revealed specificity for mammalian MaxiK channels (hSlo), thus, was named slotoxin. Slotoxin blocks the MaxiK pore-forming alpha subunit reversibly (K(d)=1.5 nM). Slotoxin association with alpha+beta (beta1 or beta4) channels was approximately 10 times slower than iberiotoxin and charybdotoxin, leading to a lack of effect on alpha+beta4 when tested at 100 nM for 5 min. Thus, slotoxin is a better tool to distinguish MaxiK alpha+beta complexes.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Garcia-Valdes J,Zamudio FZ,Toro L,Possani LDdoi
10.1016/s0014-5793(01)02791-0keywords:
subject
Has Abstractpub_date
2001-09-21 00:00:00pages
369-73issue
3eissn
0014-5793issn
1873-3468pii
S0014579301027910journal_volume
505pub_type
杂志文章相关文献
FEBS LETTERS文献大全abstract::The activation of peroxisome proliferator-activated receptor gamma (PPARgamma) has been shown to inhibit the production and the effects of proinflammatory cytokines. Since interleukin-1beta (IL-1beta) directly mediates cartilage degradation in osteoarthritis, we investigated the capability of PPARgamma ligands to modu...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(01)02614-x
更新日期:2001-07-13 00:00:00
abstract::Here, we used a reductant, N-acetyl-L-cysteine (NAC), to investigate the redox-sensitive step(s) in the signalling pathway from the tumor necrosis factor (TNF) receptor to nuclear factor kappaB (NF-kappaB). We found that NAC suppressed NF-kappaB activation triggered by TNF or by overexpression of either the TNF recept...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(00)01464-2
更新日期:2000-04-28 00:00:00
abstract::Ataxin-3, which is encoded by a gene that has been associated with Machado-Joseph disease, contains a catalytic N-terminal Josephin domain with deubiquitinase activity. Here, we show that the Josephin domain of ataxin 3 catalyzes endo-type cleavage of Lys48-linked polyubiquitin. Furthermore, NMR data obtained followin...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2014.10.013
更新日期:2014-11-28 00:00:00
abstract::Because phosphorylation of protein kinase C (PKC) may provide a mechanism for regulation of this enzyme, we have examined the ability of two other kinases to phosphorylate PKC. Our results show that casein kinase 1 (CK-1), but not casein kinase 2 (CK-2), can phosphorylate PKC in the absence of Ca2+ and phospholipids. ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(89)81092-0
更新日期:1989-09-11 00:00:00
abstract::Myogenin, a member of the MyoD family which governs skeletal muscle differentiation, was identified as a pair of phosphorylated bands on SDS-PAGE during myogenesis. The slow migrating form was found to be hyperphosphorylated myogenin. In vitro phosphorylation by CDC2 kinase caused a prominent reduction in electrophore...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(94)00964-3
更新日期:1994-09-26 00:00:00
abstract::PCR-coupled cDNA subtraction hybridization was adapted to identify the genes expressed in the adrenocortical tissues from high salt diet-treated rat. A novel cDNA clone, termed salt-inducible kinase (SIK), encoding a polypeptide (776 amino acids) with significant similarity to protein serine/ threonine kinases in the ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(99)00708-5
更新日期:1999-06-18 00:00:00
abstract::Constitutively secreted proteins have traditionally been believed to be excluded from the regulated secretory pathway. In this work we show that kappa light chain and Fc fragment, two markers of the constitutive pathway, are present in the regulated pathway in AtT-20 cells. They colocalize with the endogenous hormone ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(98)01398-2
更新日期:1998-11-20 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::Impaired functioning of the proteasome pathway is one of the molecular mechanism underlying neurodegenerative changes in Alzheimer's disease. In this study, we report that dysfunction of the proteasome pathway in astroglial cells leads to decreased survival and dysregulation of chemokines by differential regulation of...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2007.08.065
更新日期:2007-10-02 00:00:00
abstract::Vesicular monoamine transporters (VMAT) catalyze transport of serotonin, dopamine, epinephrine and norepinephrine into subcellular storage organelles in a variety of cells. Accumulation of the neurotransmitter depends on the proton electrochemical gradient across the organelle membrane and involves VMAT-mediated excha...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(94)01252-0
更新日期:1994-12-12 00:00:00
abstract::A colostral proline-rich polypeptide complex (PRP) consisting of over 30 peptides shows beneficial effects in Alzheimer's disease (AD) patients when administered in the form of sublinqual tablets called Colostrinin. The aim of the present studies was to investigate whether nanopeptide fragment of PRP (NP) - one of the...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2008.11.053
更新日期:2009-01-05 00:00:00
abstract::Cyanomorpholinoadriamycin (1 microM) was reacted in a transcription buffer with DNA of an initiated transcription complex. Subsequent elongation of the initiated complex revealed permanent transcriptional blockages at 16 sites after only 5 min of drug-DNA reaction time. The most dominant sites were immediately prior t...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(91)81185-b
更新日期:1991-11-18 00:00:00
abstract::Metabolic control theory is extended to include channelled metabolism in general. A simple relationship between the flux control by the enzymes and the degree of metabolite channelling is derived. This relationship suggests experiments in which modulation of gene expression allows one to quantify channelling. ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(93)81660-r
更新日期:1993-03-29 00:00:00
abstract::We have previously published a simple kinetic model to analyse possible pitfalls in kinetic measurements of H+/O ratios in mitochondria [(1984) FEBS Lett. 178, 187-192]. While this model demonstrated how relative electrode response times may affect the results, it did not adequately describe the kinetics of proton bac...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(86)80608-1
更新日期:1986-06-09 00:00:00
abstract::The 36 kDa fragment of actin molecule obtained with the protease from E. coli A2 strain [(1988) FEBS Lett. 228, 172] was shown to begin with Val-43 and retain the COOH-terminal amino acid residues of the parent molecule. The E. coli protease split actin preserves the NH2-terminal part of the polypeptide chain as well ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(91)80247-z
更新日期:1991-02-11 00:00:00
abstract::Reg, first isolated from a rat regenerating islet cDNA library, is expressed in regenerating islet beta-cells. Recently, it has been revealed that Reg and Reg-related genes constitute a multigene family, the Reg family. In human, the four REG family genes, i.e., REG 1 alpha, REG 1 beta, REG-related sequence (RS) and H...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(95)01381-4
更新日期:1995-12-27 00:00:00
abstract::Acute hyperammonemia, induced by two consecutive injections of ammonium acetate (550 and 450 mg per kg b.wt.), decreased the activity of gamma-glutamyl transpeptidase (GGT) in most brain regions of 18- and 30-day-old rats. This decrease in the brain GGT activity was more pronounced in younger than in older rats. After...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(92)80855-b
更新日期:1992-04-06 00:00:00
abstract::Hell's Gate globin I (HGbI), a heme-containing protein structurally homologous to mammalian neuroglobins, has been identified from an acidophilic and thermophilic obligate methanotroph, Methylacidiphilum infernorum. HGbI has very high affinity for O(2) and shows barely detectable autoxidation in the pH range of 5.2-8....
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2011.09.002
更新日期:2011-10-20 00:00:00
abstract::Mature dermal glands of Xenopus laevis contain storage granules with a characteristic ellipsoid shape. A few major proteins are present in these granules, including two with the same amino-terminal sequence and apparent molecular masses of 26 and 28 kDa. Using antibodies against these proteins, positive clones were is...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(89)80644-1
更新日期:1989-06-05 00:00:00
abstract::Binding of the thiazolyl peptide antibiotic thiostrepton to the GTPase domain of 23S rRNA involves a few crucial nucleotides, notably A1067 (E. coli). Small RNA transcripts were prepared corresponding to the GTPase domain of the plastid 23S rRNA and the two forms of cytosolic 28S rRNAs found in the human malaria paras...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/s0014-5793(97)00241-x
更新日期:1997-04-07 00:00:00
abstract::A simple method was developed for the isolation of primase-free DNA polymerase-alpha from the DNA polymerase-alpha-primase complex of mouse FM3A cells. The polymerase was separated from primase subunits by chromatography on a single-stranded DNA-cellulose column in the presence of 50% etylene glycol. The primase-free ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(90)81043-n
更新日期:1990-10-29 00:00:00
abstract::Epidermal growth factor (EGF) dose-dependently enhanced the induction of tyrosine aminotransferase and tryptophan oxygenase by glucocorticoids in primary cultures of adult rat hepatocytes without itself having any effect on these enzymes in the absence of glucocorticoids. The amplifications were observed even with dex...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(87)80293-4
更新日期:1987-11-02 00:00:00
abstract::The aim of the present study is to determine the role of intracellular Ca(2+) in VEGF signaling. We demonstrate that reduction in Ca(2+) by chelating compound BAPTA-AM or by IP(3)-endoplasmic reticulum blocker 2-APB selectively inhibited VEGF-induced activation of c-Src-PI3K-Akt but not ERK1/2 in human coronary artery...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2010.05.053
更新日期:2010-07-16 00:00:00
abstract::Malonyl-CoA-acyl carrier protein transacylase (MCAT) transfers the malonyl group from malonyl-CoA to holo-acyl carrier protein (ACP), and since malonyl-ACP is a key building block for fatty-acid biosynthesis it is considered as a promising antibacterial target. The crystal structures of MCAT from Staphylococcus aureus...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2010.02.038
更新日期:2010-03-19 00:00:00
abstract::Three clones were isolated from a lobster digestive gland cDNA library, using oligonucleotide probes based on the partial amino terminal sequence of a digestive cysteine proteinase. The cDNAs, LCP1, LCP2 and LCP3 encode preproenzymes of 322, 323 and 321 amino acid residues, and putative mature enzymes of 217, 216 and ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(91)80847-v
更新日期:1991-11-04 00:00:00
abstract::Growth of E. coli in the presence of the protonophorous uncoupler pentachlorophenol is shown to strongly enhance levels of cytochrome d, a putative Na(+)-motive oxidase. This effect was found to be arrested by chloramphenicol and stimulated by high Na+ concentration in the growth medium. The induction of cytochrome d ...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(93)81612-4
更新日期:1993-12-20 00:00:00
abstract::X-linked inhibitor of apoptosis protein (XIAP) is a potent antagonist of caspases, and functions as a ubiquitin-E3 ligase by itself and for caspases. Recently, NEDD8, a ubiquitin-like modifier, has been suggested to be used for modification of caspase-7 mediated by XIAP. However, it is not clear whether caspase-7 is a...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/j.febslet.2012.04.056
更新日期:2012-06-04 00:00:00
abstract::The cellulases cellobiohydrolase 1 (CBH 1) and endoglucanase 1 (EG 1) from the fungus Trichoderma reesei are closely related with 40% sequence identity and very similar in structure. In CBH 1 the active site is enclosed by long loops and some antiparallel beta-strands forming a 40 A long tunnel, whereas in EG 1 part o...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(96)00685-0
更新日期:1996-07-29 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::A one-electron reductive metabolism of 1,2-dibromoethane (DBE) is described that gives rise to a free radical intermediate, which can be stabilized by a spin trapping agent and detected by electron spin resonance spectroscopy. Using rat liver microsomes or isolated hepatocytes from phenobarbitone pretreated animals, u...
journal_title:FEBS letters
pub_type: 杂志文章
doi:10.1016/0014-5793(83)80964-8
更新日期:1983-08-22 00:00:00