Identification of a lysine residue at a nucleotide binding site in the firefly luciferase with p-fluorosulfonyl[14C]benzoyl-5'-adenosine.

abstract：:Heparanase is a beta-D-endoglucuronidase that cleaves heparan sulfate (HS) and has been implicated in many important physiological and pathological processes, including tumor cell metastasis, angiogenesis, and leukocyte migration. We report herein the identification of active-site residues of human heparanase. Using P...

journal_title：Biochemistry

authors： Hulett MD,Hornby JR,Ohms SJ,Zuegg J,Freeman C,Gready JE,Parish CR

更新日期：2000-12-26 00:00:00

abstract：:The aryl hydrocarbon receptor (AhR) is an intracellular receptor protein that regulates gene transcription in response to both man-made and natural ligands. A modular transactivaton domain (TAD) has been mapped to the 304 C-terminal amino acids and consists of acidic, Q-rich, and P/S/T-rich subdomains. We have used st...

journal_title：Biochemistry

authors： Watt K,Jess TJ,Kelly SM,Price NC,McEwan IJ

更新日期：2005-01-18 00:00:00

abstract：:The S-protein/vitronectin gene was isolated from a human genomic DNA library, and its sequence of about 5.3 kilobases including the adjacent 5' and 3' flanking regions was established. Alignment of the genomic DNA nucleotide sequence and the cDNA sequence indicated that the gene consisted of eight exons and seven intr...

journal_title：Biochemistry

authors： Jenne D,Stanley KK

更新日期：1987-10-20 00:00:00

abstract：:It has previously been shown that mammalian RNA-peptidyl complexes are found in close association with tRNA, but can be separated from the bulk of the tRNA by benzoylated diethylaminoethylcellulose chromatography (Kull, F.J., and Soodak, M. (1971), Biochim. Biophys. Acta 246, l; Gadski, R.A., and Kull, F.J. (1973), Bi...

journal_title：Biochemistry

authors： Fisher PA,Goodman JG,Kull FJ

更新日期：1976-09-07 00:00:00

abstract：:Succinyl-CoA synthetase of Escherichia coli is an alpha 2 beta 2 protein containing active sites at the interfaces between alpha- and beta-subunits. The alpha-subunit contains a histidine residue that is phosphorylated during the reaction. The beta-subunit binds coenzyme A and probably succinate [see Nishimura, J. S. ...

journal_title：Biochemistry

authors： Ybarra J,Prasad AR,Nishimura JS

更新日期：1986-11-04 00:00:00

abstract：:In prokaryotes, a large share of the proteins are secreted from the cell through a process that requires their translocation across the cytoplasmic membrane. This process is mediated by the universally conserved Sec system with homologues in the endoplasmic reticulum and thylakoid membranes of eukaryotes. The Sec syst...

journal_title：Biochemistry

authors： Kedrov A,Kusters I,Driessen AJ

更新日期：2013-10-01 00:00:00

abstract：:In bacteria, the transcription of virulence genes is usually controlled by a cell density-dependent process known as "quorum sensing" (QS). QS relies on small diffusible signaling molecules that cross the bacterial cell wall and activate target transcription factors after a threshold concentration has been reached. Be...

journal_title：Biochemistry

authors： Yu S,Jensen V,Seeliger J,Feldmann I,Weber S,Schleicher E,Häussler S,Blankenfeldt W

更新日期：2009-11-03 00:00:00

abstract：:The mechanism of activation of cGMP phosphodiesterase by the GTP-binding protein in the disc membrane of retinal rods has been investigated by measuring the light-induced phosphodiesterase activity in reconstituted systems where the concentration of either the GTP-binding protein or the phosphodiesterase is varied. Th...

journal_title：Biochemistry

authors： Bennett N,Clerc A

更新日期：1989-09-05 00:00:00

abstract：:The sequences and three-dimensional structures of the galactokinase, homoserine kinase, mevalonate kinase, and phosphomevalonate kinase (GHMP) family were compared to identify highly conserved surface residues. The functions of these solvent-accessible residues were assessed by determining the effects of their substit...

journal_title：Biochemistry

authors： Andreassi JL 2nd,Leyh TS

更新日期：2004-11-23 00:00:00

abstract：:Two antisera used in the radioimmunoassay for human fibrinopeptide A (FPA) which appear to have different immunochemical specificities have been tested for cross-reactivity with fibrinogen and with three fragments of fibrinogen which contain the FPA sequence. These fragments were the three-chain, NH2-terminal disulfid...

journal_title：Biochemistry

authors： Canfield RE,Dean J,Nossel HL,Butler VP Jr,Wilner GD

更新日期：1976-03-23 00:00:00

abstract：:The mechanism by which the heme-containing peroxidase, chloroperoxidase, is able to chlorinate substrates is poorly understood. One approach to advance our understanding of the mechanism of the enzyme is to determine those factors which contribute to its stability. In particular, under alkaline conditions, chloroperox...

journal_title：Biochemistry

authors： Blanke SR,Martinis SA,Sligar SG,Hager LP,Rux JJ,Dawson JH

更新日期：1996-11-19 00:00:00

abstract：:The plasma membrane of the Ehrlich ascites tumor cell contains an NADH dehydrogenase. This activity was shown not to be due to contamination by other subcellular membranes. A variety of electron acceptors have been compared as to rate with the following result: ferricyanide greater than cytochrome c greater than cytoc...

journal_title：Biochemistry

authors： Kilberg MS,Christensen HN

更新日期：1979-04-17 00:00:00

abstract：:Changes in pH can alter the structure and activity of proteins and may be used by the cell to control molecular function. This coupling can also be used in non-native applications through the design of pH-sensitive biomolecules. For example, the pH (low) insertion peptide (pHLIP) can spontaneously insert into a lipid ...

journal_title：Biochemistry

authors： Ng DP,Deber CM

更新日期：2016-08-09 00:00:00

abstract：:Group II introns self-splice via a two-step mechanism: cleavage at the 5' splice site followed by exon ligation at the 3' splice site. The second step has been difficult to study in vitro because it is generally faster than the first. Herein we describe development and partial kinetic characterization of a novel assay...

journal_title：Biochemistry

authors： Bar-Shalom A,Moore MJ

更新日期：2000-08-22 00:00:00

abstract：:The kinetics and thermodynamics of Al(III) exchange between aluminum citrate (AlL) and human serum transferrin were investigated in the 7.2-8.9 pH range. The C-site of human serum apotransferrin in interaction with bicarbonate removes Al(III) from Al citrate with an exchange equilibrium constant K1 = (2.0 +/- 0.6) x 1...

journal_title：Biochemistry

authors： Hémadi M,Miquel G,Kahn PH,El Hage Chahine JM

更新日期：2003-03-18 00:00:00

abstract：:While the critical role of the bacterial luciferase alpha subunit in catalysis has been amply documented, the beta subunit was only known to be involved in thermal stability and substrate binding. Two conserved histidyl residues at position 81 and 82 of the beta subunit of Vibrio harveyi luciferase were each mutated t...

journal_title：Biochemistry

authors： Xin X,Xi L,Tu SC

更新日期：1994-10-11 00:00:00

abstract：:A strategy to detect P-glycoprotein (P-gp) on cell membrane and quantify the cell number using electrochemical immunoassay was developed by effective surface immunoreactions and immobilization of cells on a highly hydrophilic interface, which was constructed by adsorption of colloidal gold nanoparticles on a methoxysi...

journal_title：Biochemistry

authors： Du D,Ju H,Zhang X,Chen J,Cai J,Chen H

更新日期：2005-08-30 00:00:00

abstract：:In Salmonella typhimurium, formation of the cobalt-carbon bond in the biosynthetic pathway for adenosylcobalamin is catalyzed by the product of the cobA gene which encodes a protein of 196 amino acid residues. This enzyme is an ATP:co(I)rrinoid adenosyltransferase which transfers an adenosyl moiety from MgATP to a bro...

journal_title：Biochemistry

authors： Bauer CB,Fonseca MV,Holden HM,Thoden JB,Thompson TB,Escalante-Semerena JC,Rayment I

更新日期：2001-01-16 00:00:00

abstract：:In an earlier study, β³-puromycin was used for the selection of modified ribosomes, which were utilized for the incorporation of five different β-amino acids into Escherichia coli dihydrofolate reductase (DHFR). The selected ribosomes were able to incorporate structurally disparate β-amino acids into DHFR, in spite of...

journal_title：Biochemistry

authors： Maini R,Chowdhury SR,Dedkova LM,Roy B,Daskalova SM,Paul R,Chen S,Hecht SM

更新日期：2015-06-16 00:00:00

abstract：:The amino acid sequence of chick skin collagen alpha1-CB7, the 268 CNBr peptide from the helical portion of the alpha1 chain, has been determined by automatic and manual degradation of tryptic and chymotryptic peptides, and of the COOH-terminal fragment produced by cleavage with animal collagenase. The resulting seque...

journal_title：Biochemistry

authors： Highberger JH,Corbett C,Kang AH,Gross J

更新日期：1975-07-01 00:00:00

abstract：:We have isolated from rabbit liver three cDNA clones of 1400-1800 base pairs that hybridize selectively to RNA from animals treated with phenobarbital. The nucleotide sequences of the cDNAs have been determined. In the protein coding region the nucleotide sequences of two of the cDNAs are 88% homologous, and the third...

journal_title：Biochemistry

authors： Leighton JK,DeBrunner-Vossbrinck BA,Kemper B

更新日期：1984-01-17 00:00:00

abstract：:Recent studies have indicated that CYP3A4 exhibits non-Michaelis-Menten kinetics for numerous substrates. Both homo- and heterotropic activation have been reported, and kinetic models have suggested multiple substrates within the active site. We provide some of the first physicochemical data supporting the hypothesis ...

journal_title：Biochemistry

authors： Cameron MD,Wen B,Allen KE,Roberts AG,Schuman JT,Campbell AP,Kunze KL,Nelson SD

更新日期：2005-11-01 00:00:00

abstract：:We have previously designed and synthesized small-molecule inhibitors that reduce Vibrio cholerae virulence in vitro by targeting the transcription factor ToxT. Here we report the synthesis and biological activity of derivatives of our previous bicyclic, fatty acid-like inhibitors. All of the synthesized derivatives s...

journal_title：Biochemistry

authors： Woodbrey AK,Onyango EO,Kovacikova G,Kull FJ,Gribble GW

更新日期：2018-09-25 00:00:00

abstract：:As part of a search for organic compounds that selectively target RNA, we found that specific diphenylfuran derivatives, which are related to compounds that bind to the DNA minor groove, bind very strongly to RNA in a manner very sensitive to the structure of the compounds. In extended development of the diphenylfuran...

journal_title：Biochemistry

authors： Li K,Davis TM,Bailly C,Kumar A,Boykin DW,Wilson WD

更新日期：2001-02-06 00:00:00

abstract：:Protein aggregation is associated with a wide range of diseases, and molecular probes that are able to detect a diversity of misfolded protein assemblies are of great importance. The identification of prefibrillar states preceding the formation of well-defined amyloid fibrils is of particular interest both because of ...

journal_title：Biochemistry

authors： Hammarström P,Simon R,Nyström S,Konradsson P,Aslund A,Nilsson KP

更新日期：2010-08-17 00:00:00

abstract：:alpha-Conotoxin GI is a snail toxin protein consisting of 13 amino acids cross-linked by 2 intramolecular disulfide bridges. This toxin is an antagonist of acetylcholine receptors. The native sequence has been synthesized, along with nine additional variants in which non-cysteine residues are replaced by alanine or th...

journal_title：Biochemistry

authors： Zhang RM,Snyder GH

更新日期：1991-11-26 00:00:00

abstract：:Mdm2 negatively regulates p53 by inhibiting its transcriptional activity and promoting its degradation by functioning as an E3 ubiquitin ligase. The primary p53 binding site on mdm2 is located in its N-terminal domain. Through binding to p53 at its N-terminal transactivation domain, mdm2 directly blocks the transcript...

journal_title：Biochemistry

authors： Ma J,Martin JD,Zhang H,Auger KR,Ho TF,Kirkpatrick RB,Grooms MH,Johanson KO,Tummino PJ,Copeland RA,Lai Z

更新日期：2006-08-01 00:00:00

abstract：:A likely entry/exit path for nitrogenase substrates, products, and/or protons involves residues α277(Arg), α192(Ser), and α356(Gly), all of which are highly conserved among MoFe proteins from different organisms. The α192(Ser) and α277(Arg) residues form part of a hydrogen-bonded network that also involves α195(His), ...

journal_title：Biochemistry

authors： Fisher K,Hare ND,Newton WE

更新日期：2014-10-07 00:00:00

abstract：:Two compounds have been synthesized that feature a photosensitive o-nitrobenzyl moiety attached directly to the carbamate nitrogen of carbamoylcholine. The well-characterized acetylcholine analogue, carbamoylcholine, was released from these derivatives in response to laser light pulses at wavelengths between 300 and 3...

journal_title：Biochemistry

authors： Walker JW,McCray JA,Hess GP

更新日期：1986-04-08 00:00:00

abstract：:First identified on the surface of lymphoids as a type II transmembrane protein, CD38 has now been established to have dual functions not only as a receptor but also as a multifunctional enzyme,catalyzing the synthesis of and hydrolysis of a general calcium messenger molecule, cyclic ADP-ribose(cADPR). The receptorial...

journal_title：Biochemistry

authors： Liu Q,Graeff R,Kriksunov IA,Lam CM,Lee HC,Hao Q

更新日期：2008-12-30 00:00:00