Common links in the structure and cellular localization of Rhizobium chitolipooligosaccharides and general Rhizobium membrane phospholipid and glycolipid components.

abstract：:We have used a site-specific approach to investigate the mutagenic potential of (+)- and (-)-trans-anti-benzo[a]pyrene diol epoxide (BPDE) DNA adducts. Oligodeoxyribonucleotides (5'TCCTCCTG1G2-CCTCTC), modified at the exocyclic amino groups of G1 or G2, were incorporated into a single-stranded shuttle vector and intro...

journal_title：Biochemistry

authors： Moriya M,Spiegel S,Fernandes A,Amin S,Liu T,Geacintov N,Grollman AP

更新日期：1996-12-24 00:00:00

abstract：:The respiratory chain in the cytochrome d deficient mutant Escherichia coli GR19N is a relatively simple, linear system consisting of primary dehydrogenases, ubiquinone 8, cytochrome b-556, and cytochrome o oxidase. By use of right-side-out and inside-out membrane vesicles from this strain, various oxidase activities ...

journal_title：Biochemistry

authors： Matsushita K,Kaback HR

更新日期：1986-05-06 00:00:00

abstract：:The catalytic (C) subunit of cAMP-dependent protein kinase interacts with two classes of inhibitors. The regulatory (R) subunits, types I and II, associate to form an inactive holoenzyme complex that is activated in response to cAMP. The C-subunit is also inhibited by small heat-stable protein kinase inhibitors (PKI's...

journal_title：Biochemistry

authors： Herberg FW,Taylor SS

更新日期：1993-12-21 00:00:00

abstract：:Properties of the mycobacterial polymethylpolysaccharide-lipid complex have been investigated by fluorometric techniques. From the dissociation constant for the O-methyglucose polysaccharide-parinaric acid complex at 293 K, a Gibbs free energy (delta G degree) of -33.65 kJ/mol was obtained. The Kd decreased with incre...

journal_title：Biochemistry

authors： Kiho T,Ballou CE

更新日期：1988-07-26 00:00:00

abstract：:Heme (iron protoporphyrin IX) is an essential protein prosthetic group and signaling molecule required for most life on Earth. All heme-dependent processes require the dynamic and rapid mobilization of heme from sites of synthesis or uptake to hemoproteins present in virtually every subcellular compartment. The cytoto...

journal_title：Biochemistry

authors： Hanna DA,Martinez-Guzman O,Reddi AR

更新日期：2017-04-04 00:00:00

abstract：:Recent studies have shown that there can be large differences in the stability of double and triple helical nucleic acid complexes, depending on whether RNA or DNA strands are involved. These differences have been attributed to structural differences in the sugar-phosphate backbone of these two polymers. However, sinc...

journal_title：Biochemistry

authors： Wang S,Kool ET

更新日期：1995-03-28 00:00:00

abstract：:Peptidylglycine monooxygenase (PHM) catalyzes the final step in the biosynthesis of amidated peptides that serve as important signaling molecules in numerous endocrine pathways. The catalytic mechanism has attracted much attention because of a number of unique attributes, including the presence of a pair of uncoupled ...

journal_title：Biochemistry

authors： Chauhan S,Kline CD,Mayfield M,Blackburn NJ

更新日期：2014-02-18 00:00:00

abstract：:Vitamin D receptor (VDR) is a member of the nuclear hormone receptor superfamily. When bound to a variety of vitamin D analogues, VDR manifests a wide diversity of physiological actions. The molecular mechanism by which different vitamin D analogues cause specific responses is not understood. The published crystallogr...

journal_title：Biochemistry

authors： Singarapu KK,Zhu J,Tonelli M,Rao H,Assadi-Porter FM,Westler WM,DeLuca HF,Markley JL

更新日期：2011-12-27 00:00:00

abstract：:Cnu is a nucleoid protein that has a high degree of sequence homology with Hha/YmoA family proteins, which bind to chromatin and regulate the expression of Escherichia coli virulence genes in response to changes in temperature or ionic strength. Here, we determined its solution structure and dynamic properties and map...

journal_title：Biochemistry

authors： Bae SH,Liu D,Lim HM,Lee Y,Choi BS

更新日期：2008-02-19 00:00:00

abstract：:Avoidance of over-reduction of the chloroplast ferredoxin pool is of paramount importance for plants in avoiding oxidative stress. The redox state of this pool can be controlled through regulation of the thylakoid electron transport chain. A model is presented for regulation of this chain via a thiol reduction mechani...

journal_title：Biochemistry

authors： Johnson GN

更新日期：2003-03-18 00:00:00

abstract：:In order to clarify the functional and structural role of intra- and intersubunit hydrogen bonds in human hemoglobin (Hb A), we prepared two artificial beta chain mutant hemoglobins by site-directed mutagenesis. The mutant Hb Phe-37 beta, in which Trp-37 beta is replaced by Phe to remove the intersubunit hydrogen bond...

journal_title：Biochemistry

authors： Ishimori K,Imai K,Miyazaki G,Kitagawa T,Wada Y,Morimoto H,Morishima I

更新日期：1992-03-31 00:00:00

abstract：:Ethylene and its analogues acetylene, carbon monoxide, and propylene inhibited the rate of oxidation of indole-3-acetic acid by peroxidase. Annulment of this effect by addition of superoxide dismutase showed that inhibition occurred only in the presence of the superoxide anion radical (O2-.). Kinetic and spectral data...

journal_title：Biochemistry

authors： Smith AM,Morrison WL,Milham PJ

更新日期：1983-03-29 00:00:00

abstract：:Deletion of two of the three homologous lipoyl domains that form the N-terminal half of each dihydrolipoamide acetyltransferase (E2p) polypeptide chain of the Escherichia coli pyruvate dehydrogenase complex can be achieved by in vitro deletion in the structural gene aceF. A site-directed mutagenesis of this shortened ...

journal_title：Biochemistry

authors： Texter FL,Radford SE,Laue ED,Perham RN,Miles JS,Guest JR

更新日期：1988-01-12 00:00:00

abstract：:Shaker potassium (K+) channels normally lack intrasubunit and intersubunit disulfide bonds. However, disulfide bonds are formed between Shaker subunits in intact cells exposed to oxidizing conditions. Upon electrophoresis under nonreducing conditions, intersubunit disulfide bond formation was detected by the presence ...

journal_title：Biochemistry

authors： Schulteis CT,Nagaya N,Papazian DM

更新日期：1996-09-17 00:00:00

abstract：:The functional diversity of small GTP-binding proteins (G proteins) and their ability to function as molecular switches are based on their interactions with many different proteins. A wealth of structural data has revealed that their partners are often unrelated to each other in sequence and structure, but their bindi...

journal_title：Biochemistry

authors： Biou V,Cherfils J

更新日期：2004-06-08 00:00:00

abstract：:The egg jelly that encapsulates amphibian eggs is essential for fertilization, but its molecular composition and roles remain largely unknown. We identified a calcium-dependent lectin from the pentraxin superfamily in the egg jelly coat from the South American burrowing frog, Lepidobatrachus laevis. This lectin, jeltr...

journal_title：Biochemistry

authors： Peavy TR,Hernandez C,Carroll EJ Jr

更新日期：2003-11-11 00:00:00

abstract：:The relationship between cholesterol and ubiquinone synthesis in rat intestinal epithelial cell cultures was examined by using 3 beta-[2-(diethylamino)ethoxy]androst-5-en-17-one hydrochloride (U18666A). Addition of U18666A to cells caused a greater than 90% inhibition of incorporation of [3H]acetate into cholesterol a...

journal_title：Biochemistry

authors： Sexton RC,Panini SR,Azran F,Rudney H

更新日期：1983-12-06 00:00:00

abstract：:Carbonic anhydrase (CA) catalyzes the reversible hydration of carbon dioxide to hydrogen carbonate, and its role in maintaining pH balance has made it an attractive drug target. Steroidal sulfamate esters, inhibitors of the cancer drug target steroid sulfatase (STS), are sequestered in vivo by CA II in red blood cells...

journal_title：Biochemistry

authors： Cozier GE,Leese MP,Lloyd MD,Baker MD,Thiyagarajan N,Acharya KR,Potter BV

更新日期：2010-04-27 00:00:00

abstract：:The light-sensing outer segments of photoreceptor cells harbor hundreds of flattened membranous discs containing the visual pigment, rhodopsin, and all the proteins necessary for visual signal transduction. PRCD (progressive rod-cone degeneration) protein is one of a few proteins residing specifically in photoreceptor...

journal_title：Biochemistry

authors： Spencer WJ,Pearring JN,Salinas RY,Loiselle DR,Skiba NP,Arshavsky VY

更新日期：2016-09-13 00:00:00

abstract：:The bacterial photosynthetic reaction center is the evolutionary ancestor of the Photosystem II reaction center. These proteins share the same fold and perform the same biological function. Nevertheless, the details of their molecular reaction mechanism differ. It is of significant biological and biochemical interest ...

journal_title：Biochemistry

authors： Krammer EM,Sebban P,Ullmann GM

更新日期：2009-02-17 00:00:00

abstract：:In order to evaluate the contributions that histidine residues might play both in the catalytic activities of endonuclease V and in binding to nontarget DNA, the technique of oligonucleotide site directed mutagenesis was used to create mutations at each of the four histidine residues in the endonuclease V gene. Althou...

journal_title：Biochemistry

authors： Augustine ML,Hamilton RW,Dodson ML,Lloyd RS

更新日期：1991-08-13 00:00:00

abstract：:SopE and SopE2 are delivered by the Salmonella type III secretion system into eukaryotic cells to promote cell invasion. SopE and SopE2 are potent guanine nucleotide exchange factors (GEFs) for Rho GTPases Cdc42 and Rac1 and constitute a novel class of Rho GEFs. Although the sequence of SopE-like GEFs is not at all ho...

journal_title：Biochemistry

authors： Williams C,Galyov EE,Bagby S

更新日期：2004-09-28 00:00:00

abstract：:In the dark, 4-azido-2-nitrophenyl phosphate (ANPP) is a phosphate analog which behaves like a simple energy-rich phosphate donor for the sarcoplasmic reticulum (SR) Ca-ATPase. Like p-nitrophenyl phosphate (pNPP), ANPP is hydrolyzed by the enzyme only in the presence of calcium and magnesium (K0.5 and Vmax are 0.3 mM ...

journal_title：Biochemistry

authors： Lacapère JJ,Garin J

更新日期：1994-03-08 00:00:00

abstract：:Resonance energy-transfer approaches have been used to directly monitor the interactions of the GTP gamma S-bound alpha subunit of transducin (alpha T GTP gamma S) with the retinal cyclic GMP phosphodiesterase (PDE). The PDE was labeled with 5-(iodoacetamido) fluorescein (IAF-PDE) and served as the fluorescence donor ...

journal_title：Biochemistry

authors： Erickson JW,Cerione RA

更新日期：1991-07-23 00:00:00

abstract：:Structural and biochemical characterization of aspartate 152 at the distal heme side of catalase-peroxidase (KatG) from Synechocystis PCC 6803 reveals an important functional role for this residue. In the wild-type protein, the side chain carboxyl group of Asp152 is 7.8 A apart from the heme iron and is hydrogen-bonde...

journal_title：Biochemistry

authors： Jakopitsch C,Auer M,Regelsberger G,Jantschko W,Furtmüller PG,Rüker F,Obinger C

更新日期：2003-05-13 00:00:00

abstract：:Crystallographic studies have demonstrated two flavin conformations for p-hydroxybenzoate hydroxylase (PHBH) [Gatti, D. L., Palfey, B. A. , Lah, M. S., Entsch, B., Massey, V., Ballou, D. P., & Ludwig, M. L. (1994) Science 266, 110-114. Schreuder, H. A., Mattevi, A., Obmolova, G., Kalk, K. H., Hol, W. G. J., van der Bo...

journal_title：Biochemistry

authors： Palfey BA,Ballou DP,Massey V

更新日期：1997-12-16 00:00:00

abstract：:The generation of multiprotein complexes at receptors and adapter proteins is crucial for the activation of intracellular signaling pathways. In this study, we used multiple biochemical and biophysical methods to examine the binding properties of several SH2 and SH3 domain-containing signaling proteins as they interac...

journal_title：Biochemistry

authors： Houtman JC,Higashimoto Y,Dimasi N,Cho S,Yamaguchi H,Bowden B,Regan C,Malchiodi EL,Mariuzza R,Schuck P,Appella E,Samelson LE

更新日期：2004-04-13 00:00:00

abstract：:CP47 is a pigment-protein complex in the core of photosystem II that tranfers excitation energy to the reaction center. Here we report on a spectroscopic investigation of the isolated CP47 complex. By deconvoluting the 77 K absorption and linear dichroism, red-most states at 683 and 690 nm have been identified with os...

journal_title：Biochemistry

authors： De Weerd FL,Palacios MA,Andrizhiyevskaya EG,Dekker JP,Van Grondelle R

更新日期：2002-12-24 00:00:00

abstract：:Hydrophobic interactions are responsible for stabilizing leucine zippers in peptides containing heptad repeats. The effects of substituting leucine by phenylalanine and alanine by glycine on the self-assembly of coiled-coils were examined in minimalist antimicrobial peptides designed to form amphipathic alpha-helices....

journal_title：Biochemistry

authors： Javadpour MM,Barkley MD

更新日期：1997-08-05 00:00:00

abstract：:The NADH absorbance spectrum of nicotinoprotein (NADH-containing) alcohol dehydrogenase from Amycolatopsis methanolica has a maximum at 326 nm. Reduced enzyme-bound pyridine dinucleotide could be reversibly oxidized by acetaldehyde. The fluorescence excitation spectrum for NADH bound to the enzyme has a maximum at 325...

journal_title：Biochemistry

authors： Piersma SR,Visser AJ,de Vries S,Duine JA

更新日期：1998-03-03 00:00:00