Pax6 and Pdx1 form a functional complex on the rat somatostatin gene upstream enhancer.

abstract：:We have determined the first de novo position of the secondary quinone QB in the Rhodobacter sphaeroides reaction center (RC) using phases derived by the single wavelength anomalous dispersion method from crystals with selenomethionine substitution. We found that in frozen RC crystals, QB occupies primarily the proxim...

journal_title：FEBS letters

authors： Pokkuluri PR,Laible PD,Crawford AE,Mayfield JF,Yousef MA,Ginell SL,Hanson DK,Schiffer M

更新日期：2004-07-16 00:00:00

abstract：:We found that miR-96 is overexpressed in glioma, and its level inversely correlates with the survival of patients. The reduction in miR-96 abundance suppresses the proliferation and colony formation of glioma cells. The tumorigenicity of U-87 MG cells is reduced by miR-96 silencing. miR-96 contributes to the activatio...

journal_title：FEBS letters

authors： Yan Z,Wang J,Wang C,Jiao Y,Qi W,Che S

更新日期：2014-08-25 00:00:00

abstract：:Human serum albumin (HSA) contains a single tryptophan residue at position 214. The emission properties of tryptophan 214 from recombinant albumins, namely, normal HSA, FDH-HSA and a methionine 218 HSA were examined. In all cases, the excited state lifetimes were best described by a two component model consisting main...

journal_title：FEBS letters

authors： Helms MK,Petersen CE,Bhagavan NV,Jameson DM

更新日期：1997-05-12 00:00:00

abstract：:Under hypobaric hypoxia, antioxidant defenses of the heart are stressed by the enhanced production of ROS. Mammalian heart acclimatizes to hypoxia through altered gene expression, which we studied in murine heart exposed to 10h of acute hypobaric hypoxia (AHH), equivalent to 15000ft, using cDNA arrays. Functional clas...

journal_title：FEBS letters

authors： Karar J,Dolt KS,Mishra MK,Arif E,Javed S,Pasha MA

更新日期：2007-10-02 00:00:00

abstract：:A synthetic peptide (23 residues) that includes the antibacterial and lipopolysaccharide-binding regions of human lactoferricin, an antimicrobial sequence of lactoferrin, was used to study its action on cytoplasmic membrane of Escherichia coli 0111 and E. coli phospholipid vesicles. The peptide caused a depolarization...

journal_title：FEBS letters

authors： Aguilera O,Ostolaza H,Quirós LM,Fierro JF

更新日期：1999-12-03 00:00:00

abstract：:Two alpha-type CK2-activated PKAs (CK2-aPKAIalpha and CK2-aPKAIIalpha) were biochemically characterized in vitro using GST-HBV core fusion protein (GST-Hcore) and GST-Hcore157B as phosphate acceptors. It was found that (i), in the absence of cAMP, these two CK2-aPKAs phosphorylated both Ser-170 and Ser-178 on GST-Hcor...

journal_title：FEBS letters

authors： Enomoto M,Sawano Y,Kosuge S,Yamano Y,Kuroki K,Ohtsuki K

更新日期：2006-02-06 00:00:00

abstract：:Antisera were raised against a phosphoprotein of 65 kDa (PP65) from Paramecium cells (shown before to be selectively dephosphorylated during synchronous exocytosis) and specified by immunoblotting. By immunofluorescence PP65 has been localized within the cortex, beneath the cell membrane. This corresponds to data obta...

journal_title：FEBS letters

authors： Stecher B,Höhne B,Gras U,Momayezi M,Glas-Albrecht R,Plattner H

更新日期：1987-10-19 00:00:00

abstract：:The two tryptophan residues, Trp-248 and Trp-330, in tryptophan indole-lyase (tryptophanase) from E. coli have been separately mutated to phenylalanine using site-directed mutagenesis. Both single tryptophan mutant enzymes have full catalytic activity, but exhibit different fluorescence and near-UV circular dichroism ...

journal_title：FEBS letters

authors： Phillips RS,Gollnick P

更新日期：1990-07-30 00:00:00

abstract：:Liver microsomes contain a vitamin K and O2-dependent carboxylase that converts peptide-bound glutamyl residues to gamma-carboxyglutamate residues. The peptide Boc-O-phospho-Ser-O-phospho-Ser-Leu-OMe has now been synthesized. This peptide inhibits the carboxylation of endogenous protein precursors by a detergent-solub...

journal_title：FEBS letters

authors： Rich DH,Kawai M,Goodman HL,Engelke J,Suttie JW

更新日期：1983-02-07 00:00:00

abstract：:Using time-resolved low-temperature spectroscopy, we have examined whether or not bovine rhodopsin has a unique transducin-binding state, meta Ib, previously detected from chicken rhodopsin. Unlike chicken meta Ib, bovine meta Ib was detected only by detailed kinetics analysis of the bleaching process, but it was stab...

journal_title：FEBS letters

authors： Tachibanaki S,Imai H,Terakita A,Shichida Y

更新日期：1998-03-20 00:00:00

abstract：:Terminal oligopyrimidine (TOP) mRNAs are a group of messengers translationally regulated according to the growth status of the cell. Two hypotheses have been proposed for the mechanism of the regulation: (i) there is a specific translational regulator which can reversibly alter TOP-mRNA structure, (ii) a component of ...

journal_title：FEBS letters

authors： Loreni F,Amaldi F

更新日期：1997-10-27 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：:Fourier-transform infrared (FT-IR) spectral imaging was used for analyzing biochemical changes in tumor cells. Metabolic parameters of human lung A549/8 adenocarcinoma and U87 glioma cells were compared under stress conditions in culture along with tumor progression after cell implantation onto the chick embryo chorio...

journal_title：FEBS letters

authors： Petibois C,Drogat B,Bikfalvi A,Déléris G,Moenner M

更新日期：2007-11-27 00:00:00

abstract：:The hypothesis that calpain subunits dissociate in the presence of Ca2+ has been tested by methods which avoid interference by Ca2+-induced aggregation and large subunit autolysis. Inactive Cys105Ser-m-calpain, bound either to Ni-NTA-agarose or to immobilized casein, after incubation with Ca2+, could be recovered in h...

journal_title：FEBS letters

authors： Dutt P,Arthur JS,Croall DE,Elce JS

更新日期：1998-10-09 00:00:00

abstract：:Fibroblast growth factor-2 (FGF-2) is mitogenic for the human breast cancer cell line MCF-7; here we investigate some of the signaling pathways subserving this activity. FGF-2 stimulation of MCF-7 cells resulted in a global increase of intracellular tyrosine phosphorylation of proteins, particularly FGF receptor subst...

journal_title：FEBS letters

authors： Vercoutter-Edouart A,Lemoine J,Smart CE,Nurcombe V,Boilly B,Peyrat J,Hondermarck H

更新日期：2000-08-04 00:00:00

abstract：:Cytochrome P-450scc (P-450scc), a cholesterol side-chain cleavage enzyme from bovine adrenocortical mitochondria, has been crystallized for the first time. Upon removal of glycerol from the solution of the native enzyme complexed with pyridoxal 5'-phosphate (PLP) by microdialysis against distilled water, reddish and p...

journal_title：FEBS letters

authors： Iwamoto Y,Tsubaki M,Hiwatashi A,Ichikawa Y

更新日期：1988-06-06 00:00:00

abstract：:A technique has been developed to probe directly RecA-DNA interactions by the use of the fluorescent chromophore, (+)anti-benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide (BPDE), covalently attached to DNA. The 24-mer oligonucleotide 5'-d(CTACTAAACATGTACAAATCATCC) was specifically modified on the exocyclic nitrogen of the ...

journal_title：FEBS letters

authors： Wittung P,Funk M,Jernström B,Nordén B,Takahashi M

更新日期：1995-07-10 00:00:00

abstract：:To identify genes whose expression is modulated by heregulin-beta1 (HRG), a regulatory polypeptide for mammary epithelial cells, we performed differential display screening of MCF-7 cell mRNA. One cDNA clone upregulated by HRG was identical to human ADP-ribosylation factor 3 (ARF3), a guanine nucleotide-binding protei...

journal_title：FEBS letters

authors： Li F,Mandal M,Mishra SK,Barnes CJ,Kumar R

更新日期：2002-07-31 00:00:00

abstract：:Mature beta-hexosaminidase A has been found associated to the external leaflet of plasma membrane of cultured fibroblasts. The plasma membrane association of beta-hexosaminidase A has been directly determined by cell surface biotinylation followed by affinity chromatography purification of the biotinylated proteins, a...

journal_title：FEBS letters

authors： Mencarelli S,Cavalieri C,Magini A,Tancini B,Basso L,Lemansky P,Hasilik A,Li YT,Chigorno V,Orlacchio A,Emiliani C,Sonnino S

更新日期：2005-10-24 00:00:00

abstract：:A Bacillus subtilis strain deficient in seven extracellular proteases was used to produce human mast cell chymase and is a viable expression system for serine proteases and other classes of proteins. Chymase is produced at 0.3-0.5 mg/l and is purified by three chromatography steps. Two crystal forms of PMSF-treated ch...

journal_title：FEBS letters

authors： McGrath ME,Osawa AE,Barnes MG,Clark JM,Mortara KD,Schmidt BF

更新日期：1997-08-25 00:00:00

abstract：:We have isolated four lambda-phages covering the complete pig aminopeptidase N/CD13 gene. The sequence of 2.85 kbp encompasses 1.18 kbp of the 5' upstream region and 1.67 kbp of the structural gene. In the promoter region we find a TATA box and potential binding sites for CTF-1/NF-1 and AP-2. By sequence comparisons w...

journal_title：FEBS letters

authors： Olsen J,Sjöström H,Norén O

更新日期：1989-07-17 00:00:00

abstract：:A simple technique for rapid isolation of mitochondrial DNA (mtDNA) from animal cells is described. The method is based on the selective alkaline denaturation procedure of Birnboim and Doly [(1979) Nucleic Acids Res. 7, 1513-1523] and avoids the use of CsCl gradient centrifugation. The yield of mtDNA is comparable to ...

journal_title：FEBS letters

authors： Palva TK,Palva ET

更新日期：1985-11-18 00:00:00

abstract：:The residues on MAP kinase kinase-1 (MAPKK1) phosphorylated by MAP kinase in vitro have been identified as Thr-291 and Thr-385. Both threonines are phosphorylated in PC12 cells and the 32P-labelling of each residue increases after stimulation with nerve growth factor (NGF). The results establish that MAPKK1 is a physi...

journal_title：FEBS letters

authors： Saito Y,Gomez N,Campbell DG,Ashworth A,Marshall CJ,Cohen P

更新日期：1994-03-14 00:00:00

abstract：:Chlorella virus-encoded membrane protein Kcv represents a new class of potassium channel. This 94-amino acids miniature K(+) channel consists of two trans-membrane alpha-helix domains intermediated by a pore domain that contains a highly conserved K(+) selectivity filter. Therefore, as an archetypal K(+) channel, the ...

journal_title：FEBS letters

authors： Shim JW,Yang M,Gu LQ

更新日期：2007-03-06 00:00:00

abstract：:Biotin synthase catalyses the last step of the biosynthesis of biotin in microorganisms and plants. The active protein isolated from Bacillus sphaericus and Escherichia coli contains an iron-sulphur (FeS) cluster. The native enzymes were depleted of their iron and inorganic sulphide and the resulting apoenzymes were c...

journal_title：FEBS letters

authors： Bui BT,Florentin D,Fournier F,Ploux O,Méjean A,Marquet A

更新日期：1998-11-27 00:00:00

abstract：:We have previously reported that synthetic dsRNA can activate p21 expression by targeting the p21 promoter, thereby suppressing the proliferation of human bladder cancer cells. As complementarity between dsRNA and its target sequences is necessary for RNA activation, miRNAs may also trigger p21 expression through the ...

journal_title：FEBS letters

authors： Wang C,Chen Z,Ge Q,Hu J,Li F,Hu J,Xu H,Ye Z,Li LC

更新日期：2014-12-20 00:00:00

abstract：:Glycogen synthase kinase-5 (casein kinase-II) phosphorylates glycogen synthase on a serine termed site 5. This residue is just C-terminal to the 3 serines phosphorylated by glycogen synthase kinase-3, which are critical for the hormonal regulation of glycogen synthase in vivo. Although phosphorylation of site 5 does n...

journal_title：FEBS letters

authors： Picton C,Woodgett J,Hemmings B,Cohen P

更新日期：1982-12-13 00:00:00

abstract：:Syntabulin is a microtubule-associated protein that mediates anterograde transport of vesicles to neuronal processes. Here, we found that syntabulin was expressed in mouse pancreas and insulin-secreting β-cells, and that it partially co-localized with microtubule and insulin-containing granules. The association of syn...

journal_title：FEBS letters

authors： Ying Y,Li L,Cao W,Yan D,Zeng Q,Kong X,Lu L,Yan M,Xu X,Qu J,Su Q,Ma X

更新日期：2012-10-19 00:00:00

abstract：:A new inositol derivative could be isolated from the Archaeum Pyrococcus woesei and identified as di-myo-inositol-1,1'-phosphate by 1H, 31P NMR spectroscopy, mass spectrometry and thin layer chromatography. In P. woesei, this inositol phosphate represents the dominant counterion of K+ which ranges from 500 to 600 mM. ...

journal_title：FEBS letters

authors： Scholz S,Sonnenbichler J,Schäfer W,Hensel R

更新日期：1992-07-20 00:00:00

abstract：:Mutation of Thr90 to Ala has a profound effect on bacteriorhodopsin properties. T90A shows about 20% of the proton pumping efficiency of wild type, once reconstituted into liposomes. Mutation of Thr90 influences greatly the Schiff base/Asp85 environment, as demonstrated by altered lambda(max) of 555 nm and pK(a) of As...

journal_title：FEBS letters

authors： Perálvarez A,Barnadas R,Sabés M,Querol E,Padrós E

更新日期：2001-11-23 00:00:00