abstract：:The steady-state oxidation of ferrocytochrome c by cytochrome oxidase monitored spectrophotometrically showed that: (1) the kinetics were strictly biphasic with purified enzyme, while mitochondrial membrane-bound enzyme exhibited multiphasic kinetics with extended low affinity phases; (2) the TNmax for the highest aff...

journal_title：FEBS letters

authors： Speck SH,Neu CA,Swanson MS,Margoliash E

更新日期：1983-12-12 00:00:00

abstract：:The isolation of a novel biologically active peptide, designated galanin, is described. The peptide was discovered by the detection of its C-terminal amide structure in porcine intestinal extract using a chemical method. It was found that galanin consists of 29 amino acids and the complete amino acid sequence is: Gly-...

journal_title：FEBS letters

authors： Tatemoto K,Rökaeus A,Jörnvall H,McDonald TJ,Mutt V

更新日期：1983-11-28 00:00:00

abstract：:Thymidine kinase in chick embryo retina reaches its highest values on the 8-10th day of development, then declines reaching the lowest value at hatching. The rate of DNA synthesis essentially follows this activity while, in contrast, nucleoside phosphotransferase increases progressively during development. Glucocortic...

journal_title：FEBS letters

authors： Tesoriere G,Tesoriere L,Giuliano M,Vento R

更新日期：1983-11-28 00:00:00

abstract：:The active A1 peptide of cholera toxin was linked by a disulphide bond to the lectin of Wisteria floribunda. The resulting conjugate activated the adenylate cyclase of intact U937 or K562 cells at the same concentrations as native toxin did, but to a greater extent. Activation was inhibited by N-acetyl-D-galactosamine...

journal_title：FEBS letters

authors： van Heyningen S

更新日期：1983-11-28 00:00:00

abstract：:We have analyzed the specificity of the actinomycin D-DNA interaction. The 'footprint' method has been used in this investigation. It is shown that: (i) The presence of dinucleotide GC or GG is required for binding of a single drug molecule. (ii) The strong binding sites are encoded by tetranucleotide XGCY; where X no...

journal_title：FEBS letters

authors： Scamrov AV,Beabealashvilli RS

更新日期：1983-11-28 00:00:00

abstract：:Tropomyosins can be classified as belonging to an alpha-like or a beta-like family depending on the absence or presence, respectively in their protease-V8 digestion pattern of two peptides with an apparent molecular mass of 21 kDa. Chicken cardiac tropomyosin and the 43 kDa component from gizzard tropomyosin are accor...

journal_title：FEBS letters

authors： Kardami E,Fiszman MY

更新日期：1983-11-14 00:00:00

abstract：:Vasopressin elicited a dose-dependent inhibition of glucagon-induced cAMP accumulation in isolated hepatocytes. This response was not diminished by incubation of cells with the calmodulin antagonists trifluoperazine or chlorpromazine and was only slightly reduced in Ca2+-depleted hepatocytes. Half-maximal inhibition o...

journal_title：FEBS letters

authors： Morgan NG,Shipp CC,Exton JH

更新日期：1983-11-14 00:00:00

abstract：:Sequence homology was found by computer analysis between potato spindle tuber viroid (PSTV) RNA and U3B snRNA of Novikoff hepatoma cells. This homology is colinear in arrangement, extends in length to 81% of the entire U3B snRNA molecule and is involved in the PSTV molecule unique sites which, if depicted in terms of ...

journal_title：FEBS letters

authors： Kiss T,Pósfai J,Solymosy F

更新日期：1983-11-14 00:00:00

abstract：:Dipeptidylaminopeptidase IV, a plasma membrane-bound glycoprotein, is characterized by an intramolecular heterogeneous turnover of the protein backbone and carbohydrate chain. The faster turnover of the latter is restricted only to the outer sugars. The inner core sugars D-mannose and N-acetyl-D-glucosamine turn over ...

journal_title：FEBS letters

authors： Volk BA,Kreisel W,Köttgen E,Gerok W,Reutter W

更新日期：1983-10-31 00:00:00

abstract：:Three inositol-containing sialyloligosaccharides were isolated from normal human urine. Structural studies including gas-liquid chromatography of mono- and disaccharide derivatives, methylation analysis, mass spectrometry and glycosidase treatments indicated the structure NeuAc (alpha 2-3)Gal(beta 1-0)scyllo-inositol ...

journal_title：FEBS letters

authors： Parkkinen J

更新日期：1983-10-31 00:00:00

abstract：:Mutual arrangement of histone H1 molecules in chromatin extended in low salt-EDTA buffer and additionally in the presence of urea was studied by means of reversible cross-linking combined with chymotryptic digestion. In the chromatins tested, the chymotryptic halves of H1 were cross-linked in all possible combinations...

journal_title：FEBS letters

authors： Nikolaev LG,Glotov BO,Dashkevich VK,Barbashov SF,Severin ES

更新日期：1983-10-31 00:00:00

abstract：:The addition of 5-azacytidine to erythroleukemic cells which were induced to differentiate with DMSO or BA altered the expression of the hemoglobins. After the addition of 5-azacytidine there was an increase in hemoglobin synthesis especially in the embryonic E2 band. The beta-globin increased in synthesis after 5-aza...

journal_title：FEBS letters

authors： Zucker RM,Decal DL,Whittington KB

更新日期：1983-10-17 00:00:00

abstract：:The Na+-induced release of accumulated Ca2+ from heart mitochondria is inhibited by amiloride, benzamil and several other amiloride analogues. These drugs do not affect uptake or release of Ca2+ mediated by the ruthenium red-sensitive uniporter and their effects, like those of diltiazem and other Ca2+-antagonists, app...

journal_title：FEBS letters

authors： Jurkowitz MS,Altschuld RA,Brierley GP,Cragoe EJ Jr

更新日期：1983-10-17 00:00:00

abstract：:Platelet release products and purified platelet-derived growth factor stimulated the phosphorylation of ribosomal protein S6 in cultured mouse Balb/c 3T3 fibroblasts. The post-nuclear fraction of the stimulated cells was enriched in S6 kinase activity specific for sites resembling those phosphorylated within intact ce...

journal_title：FEBS letters

authors： Wettenhall RE,Chesterman CN,Walker T,Morgan FJ

更新日期：1983-10-03 00:00:00

abstract：:32P-Labelled tRNA was isolated from uninfected and phage phi 149-infected Vibrio cholerae cells. These tRNA preparations were then hybridised with DNA isolated from phage phi 149. Significant hybridisation was observed only with tRNA from phage phi 149-infected cells. This strongly suggests that infection of classical...

journal_title：FEBS letters

authors： Ghosh RK,Guhathakurta I

更新日期：1983-10-03 00:00:00

abstract：:Glutamate uptake by rat hepatocytes in primary monolayer culture was found to be mediated by a Na+-independent and by two Na+-dependent transport systems of high and low affinity. Inhibition studies with cysteate and other model amino acids rules out the participation of the neutral amino acid transport systems A, ASC...

journal_title：FEBS letters

authors： Gebhardt R,Mecke D

更新日期：1983-09-19 00:00:00

abstract：:The metallochromic indicator murexide has been used to monitor calcium concentration changes during the dextran-induced, phosphatidylserine-dependent degranulation of rat peritoneal mast cells. The dextran-induced Ca2+-uptake showed an absolute dependence on the presence of phosphatidylserine. The extent of Ca2+-uptak...

journal_title：FEBS letters

authors： Sagi-Eisenberg R,Geller-Bernstein C,Ben-Neriah Z,Pecht I

更新日期：1983-09-05 00:00:00

abstract：:In washed anterior pituitary membranes, there is enough GTP to occupy Ns and therefore to obtain activation of adenylate cyclase by vasointestinal peptide. GTP concentrations needed to obtain adenylate cyclase inhibition by dopamine (above 5 X 10- M) stimulate the adenylate cyclase. The dopamine effect is a blockade o...

journal_title：FEBS letters

authors： Bockaert J,Sebben-Perez M

更新日期：1983-09-05 00:00:00

abstract：:Analysis of the amino acid sequence of bovine brain myelin proteolipid reveals not only extensive internal homology, but also homology with portions of the myelin basic protein, the peripheral nerve myelin protein, Po, and with the small proteolipid subunit of mitochondrial ATP synthase. These results suggest that the...

journal_title：FEBS letters

authors： Laursen RA,Samiullah M,Lees MB

更新日期：1983-09-05 00:00:00

abstract：:Rat liver fructose 1,6-bisphosphatase can be protected against partial inactivation by N-ethylmaleimide by low concentrations of fructose 2,6-bisphosphate or high concentrations of fructose 1,6-bisphosphate. The partially inactivated enzyme has a much reduced sensitivity to high substrate inhibition and has lost the s...

journal_title：FEBS letters

authors： Meek DW,Nimmo HG

更新日期：1983-08-22 00:00:00

abstract：:A drastic inhibition of protein synthesis occurs in HeLa cells treated with human lymphoblastoid interferon and infected with poliovirus. At the time when this inhibition has been established no degradation of 32P-labelled ribosomal RNA can be detected. Isolation of the mRNAs from poliovirus-infected cells plus or min...

journal_title：FEBS letters

authors： Muñoz A,Harvey R,Carrasco L

更新日期：1983-08-22 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

authors： Tomasi A,Albano E,Dianzani MU,Slater TF,Vannini V

更新日期：1983-08-22 00:00:00

abstract：:We have used 19F NMR and CD spectra to study interactions of TFP with CaM under various conditions where no aggregation of TFP occurs. It was found that TFP is bound to CaM in the absence of Ca2+ with Ka greater than 4 X 10(4) M in terms of 19F NMR of TFP and that KCl markedly influences the interaction of TFP with Ca...

journal_title：FEBS letters

authors： Shimizu T,Hatano M

更新日期：1983-08-22 00:00:00

abstract：:Protein synthesis in cell-free systems of rat liver and kidney decreases markedly with age. Examination of activity changes of the different steps revealed for both types of organs that reduced binding of aminoacyl-tRNA to ribosomes and reduced peptidyl transfer might be of major importance for the decrease in overall...

journal_title：FEBS letters

authors： Gabius HJ,Engelhardt R,Deerberg F,Cramer F

更新日期：1983-08-22 00:00:00

abstract：:The fluorescence dye 1-anilinonaphthalene-8-sulfonate (ANS) was used as a probe of non-polar binding sites in 4-aminobutyrate aminotransferase. ANS binds to a single binding site of the dimeric protein with a Kd of 6 microM. Nanosecond emission anisotropy measurements were performed on the ANS-enzyme in an effort to d...

journal_title：FEBS letters

authors： Churchich JE,Kim DS,Schnackerz KD

更新日期：1983-08-22 00:00:00

abstract：:The rate of formation of diferric-transferrin has been studied using various combinations of Fe(II), Tf, Cp and h serum. When the reactants were added in a correct physiological sequence, ceruloplasmin and diluted human serum showed the fastest rate of saturation of transferrin. ...

journal_title：FEBS letters

authors： Chidambaram MV,Barnes G,Frieden E

更新日期：1983-08-08 00:00:00

abstract：:Rats were infused intravenously with a bolus of mevalonolactone or cholesterol-rich chylomicron and microsomes prepared from the livers at times up to 2 h after the infusion. Acyl-CoA cholesterol acyltransferase (ACAT) activity was measured in the microsomes under conditions that define the activity state of the enzym...

journal_title：FEBS letters

authors： Suckling KE,Stange EF,Dietschy JM

更新日期：1983-08-08 00:00:00

abstract：:The fluorescent calcium indicator 'quin2' was used to demonstrate changes in cytoplasmic calcium concentrations in bovine anterior pituitary cells. The basal calcium concentration was 0.21 +/- 0.02 microM (mean of 4 cell preparations). Thyroliberin (TRH) (10(-10) - 10(-6) M) rapidly and at the higher concentrations tr...

journal_title：FEBS letters

authors： Schofield JG

更新日期：1983-08-08 00:00:00

abstract：:We report that glycolysis in human quiescent fibroblasts stimulated by serum addition is increased, and that the changes of the metabolic route reflect the activity of the phosphofructokinase. A possible role of fructose-2,6-bisphosphate as a positive modulator of the key enzyme is proposed. ...

journal_title：FEBS letters

authors： Bruni P,Farnararo M,Vasta V,D'Alessandro A

更新日期：1983-08-08 00:00:00

abstract：:Phosphorylation of the 20 kDa myosin light chain from smooth muscle by five different kinases was investigated. Three of the kinases (myosin light chain kinase, phosphorylase kinase, and cAMP-dependent protein kinase) phosphorylate serine residues, the fourth (casein-kinase-2) mainly threonine, and the fifth (glycogen...

journal_title：FEBS letters

authors： Singh TJ,Akatsuka A,Huang KP

更新日期：1983-08-08 00:00:00

abstract：:Crosslinking of histones in mouse liver nuclei and extended chromatin with a bifunctional reagent leads to the formation of H1-H1o heterodimers as well as H1o-H1o homodimers. H1o can be also crosslinked to the core histones. Thus, the location of histone H1o within the basic repeating chromatin structure seems to be a...

journal_title：FEBS letters

authors： Dashkevich VK,Nikolaev LG,Zlatanova JS,Glotov BO,Severin ES

更新日期：1983-07-25 00:00:00

abstract：:Eleven cloned hybridomas which secrete antibodies to acetylcholine receptors from human muscle have been prepared. All of these monoclonal antibodies to have the same basic specificity as shown by competition for binding to the main immunogenic region on the receptor, but these antibodies differ in fine specificity as...

journal_title：FEBS letters

authors： Tzartos S,Langeberg L,Hochschwender S,Lindstrom J

更新日期：1983-07-11 00:00:00

abstract：:Hydrogenase gene from Clostridium butyricum was cloned in Escherichia coli HK16 (Hyd-) using pBR322 and PstI. The plasmid, pCBH1, containing hydrogenase gene was 7.3 MDa and pCBH1 had 5 PstI-DNA fragments (3.9, 2.6, 0.7, 0.03-0.04, less than 0.02 MDa, respectively). The hydrogenase activity of HK16 (pCBH1) was about 3...

journal_title：FEBS letters

authors： Karube I,Urano N,Yamada T,Hirochika H,Sakaguchi K

更新日期：1983-07-11 00:00:00

abstract：:Bacteriophage T5 Bg/II/Hind III DNA fragment (803 basepairs), containing the genes for 2 tRNAs and 2 RNAs with unknown functions, was cloned in the plasmid pBR322. The analysis of DNA sequence indicates that tRNA genes code isoacceptor tRNAsSer (tRNA1Ser and tRNA2Ser) with anticodons UGA and GGA, respectively. The mai...

journal_title：FEBS letters

authors： Kryukov VM,Ksenzenko VN,Kaliman AV,Bayev AA

更新日期：1983-07-11 00:00:00

abstract：:To gain an understanding of the mechanism by which the hydroxyl free radical can arise in superoxide generating systems and learn how different chelaters of iron can inhibit this reaction, a pulse radiolysis kinetic study of the reaction of O;- with Fe(III)EDTA, Fe(III)HEDTA and Fe(III)DETAPAC (or DTPA)was undertaken....

journal_title：FEBS letters

authors： Buettner GR,Doherty TP,Patterson LK

更新日期：1983-07-11 00:00:00

abstract：:Three of four natural compounds, which are caffeic acid, eupatilin and 4'-demethyleupatilin, isolated from Chinese plant, Artemisia rubripes Nakai selectively inhibited 5-lipoxygenase of cultured mastocytoma cells. Half-inhibition doses (ID50) for caffeic acid, eupatilin and 4'-demethyleupatilin were 3.7, 14 and 18 X ...

journal_title：FEBS letters

authors： Koshihara Y,Neichi T,Murota S,Lao A,Fujimoto Y,Tatsuno T

更新日期：1983-07-11 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

authors： Spina A,Chiosi E,Paolisso G,Laurenza A,Illiano G

更新日期：1983-07-04 00:00:00

abstract：:A tropomyosin-binding protein (app. Mr 17000) was detected in equine platelet preparations by a gel overlay technique. Its isolation, amino acid and partial sequence analyses have shown it to be histone H2B. As with a similar protein from pig platelet preparations [der Terrossian et al. (1983) FEBS Lett. 152, 202-206]...

journal_title：FEBS letters

authors： Stewart DI,Golosinska K,Smillie LB

更新日期：1983-06-27 00:00:00

abstract：:Branched-chain 2-oxoacid dehydrogenase complex has been purified to near homogeneity by a simple, rapid procedure. The final product contains endogenous kinase activity capable of phosphorylating and inactivating the complex. Phosphorylation continues after complete inactivation, indicating the possibility of several ...

journal_title：FEBS letters

authors： Lawson R,Cook KG,Yeaman SJ

更新日期：1983-06-27 00:00:00

abstract：:Bacterial cells containing the ner gene of phage Mu inserted into pBR322 express a binding activity with specificity for the left-end EcoRI.C fragment of Mu DNA. Crude extracts containing either Mu repressor or ner protein have been used to localize binding sites on TaqI subfragments of the EcoRI.C fragment. There are...

journal_title：FEBS letters

authors： Barlach S,Schumann W

更新日期：1983-06-27 00:00:00