β-Lactone Synthetase Found in the Olefin Biosynthesis Pathway.

abstract：:We have examined the competitive binding of oxygen and carbon monoxide to the multisubunit hemocyanin of the tarantula Eurypelma californicum. Employment of high-precision thin-layer methods has enabled detailed characterization of the pure oxygen and pure carbon monoxide binding curves, as well as binding curves perf...

journal_title：Biochemistry

authors： Decker H,Connelly PR,Robert CH,Gill SJ

更新日期：1988-09-06 00:00:00

abstract：:Single-molecule fluorescence resonance energy transfer (smFRET) methods were used to study the assembly pathway and DNA unwinding activity of the bacteriophage T4 helicase-primase (primosome) complex. The helicase substrates used were surface-immobilized model DNA replication forks "internally" labeled in the duplex r...

journal_title：Biochemistry

authors： Lee W,Jose D,Phelps C,Marcus AH,von Hippel PH

更新日期：2013-05-07 00:00:00

abstract：:Based on the atomic structures of the mitochondrial cytochrome bc(1) complex, it has been proposed that the soluble domain of the [2Fe-2S] Rieske iron-sulfur protein (ISP) must rotate by ca. 60 degrees and translate through an appreciable distance between two binding sites, proximal to cytochrome c(1) and to the lumen...

journal_title：Biochemistry

authors： Heimann S,Ponamarev MV,Cramer WA

更新日期：2000-03-14 00:00:00

abstract：:(+)-Delta-cadinene synthase (DCS) from Gossypium arboreum (tree cotton) is a sesquiterpene cyclase that catalyzes the cyclization of farnesyl diphosphate in the first committed step of the biosynthesis of gossypol, a phytoalexin that defends the plant from bacterial and fungal pathogens. Here, we report the X-ray crys...

journal_title：Biochemistry

authors： Gennadios HA,Gonzalez V,Di Costanzo L,Li A,Yu F,Miller DJ,Allemann RK,Christianson DW

更新日期：2009-07-07 00:00:00

abstract：:We have obtained the 470 MHz 19F NMR spectra of wild type [4-F]Trp-labeled myoglobins (MbCO, MbO2, deoxyMb, metMb, and MbCN) and hemoglobins (HbCO, HbO2, and deoxyHb), as well as those of several mutants (W7F Mb, betaW15F Hb, betaW37S Hb, and betaY130F Hb, all as the carbonmonoxy adducts), prepared via site-directed m...

journal_title：Biochemistry

authors： Pearson JG,Montez B,Le H,Oldfield E,Chien EY,Sligar SG

更新日期：1997-03-25 00:00:00

abstract：:The deposition of fibrils and amorphous aggregates of transthyretin (TTR) in patient tissues is a hallmark of TTR amyloid disease, but the molecular details of amyloidogenesis are poorly understood. Tetramer dissociation is typically rate-limiting for TTR amyloid fibril formation, so we have used a monomeric variant o...

journal_title：Biochemistry

authors： Hurshman AR,White JT,Powers ET,Kelly JW

更新日期：2004-06-15 00:00:00

abstract：:In the anaerobic sulfate-reducing bacterium Desulfovibrio vulgaris Hildenborough (DvH), the genome sequencing revealed the presence of three operons encoding formate dehydrogenases. fdh1 encodes an alphabetagamma trimeric enzyme containing 11 heme binding sites; fdh2 corresponds to an alphabetagamma trimeric enzyme wi...

journal_title：Biochemistry

authors： ElAntak L,Dolla A,Durand MC,Bianco P,Guerlesquin F

更新日期：2005-11-15 00:00:00

abstract：:Gemcitabine 5'-diphosphate (F(2)CDP) is a potent inhibitor of ribonucleotide reductases (RNRs), enzymes that convert nucleotides (NDPs) to deoxynucleotides and are essential for DNA replication and repair. The Escherichia coli RNR, an alpha2beta2 complex, when incubated with 1 equiv of F(2)CDP catalyzes the release of...

journal_title：Biochemistry

authors： Artin E,Wang J,Lohman GJ,Yokoyama K,Yu G,Griffin RG,Bar G,Stubbe J

更新日期：2009-12-15 00:00:00

abstract：:X-ray absorption spectroscopy has been performed on oriented photosystem II membrane particles isolated from spinach. Structural features of the tetranuclear Mn cluster and the orientation of the cluster with respect to the lipid bilayer were determined in both the S1 and S2 states of the Kok cycle. Variation of the s...

journal_title：Biochemistry

authors： Mukerji I,Andrews JC,DeRose VJ,Latimer MJ,Yachandra VK,Sauer K,Klein MP

更新日期：1994-08-16 00:00:00

abstract：:The temperature dependence of the reduction potential of the CuA site in carbon monoxide inhibited cytochrome c oxidase has been measured with a spectroelectrochemical method adapted to the relatively weak near-infrared absorption of this copper ion. These measurements, together with parallel measurements on the 604-n...

journal_title：Biochemistry

authors： Wang H,Blair DF,Ellis WR Jr,Gray HB,Chan SI

更新日期：1986-01-14 00:00:00

abstract：:Catalase (hydroperoxidase) HPII of Escherichia coli is the largest catalase so far characterized, existing as a homotetramer of 84 kDa subunits. Each subunit has a core structure that closely resembles small subunit catalases, supplemented with an extended N-terminal sequence and compact flavodoxin-like C-terminal dom...

journal_title：Biochemistry

authors： Chelikani P,Donald LJ,Duckworth HW,Loewen PC

更新日期：2003-05-20 00:00:00

abstract：:A simple procedure is introduced for accurately defining the precision with which the Cartesian coordinates of any macromolecular structure are determined by nuclear Overhauser data. The method utilizes an ensemble of structures obtained from an array of independent simulated data sets derived from a final structure. ...

journal_title：Biochemistry

authors： Shriver J,Edmondson S

更新日期：1993-02-16 00:00:00

abstract：:A method for the rapid and quantitative analysis of 5'-terminal oligonucleotides of RNAs made in vitro is described. The method involves synthesis of RNA in the presence of [gamma-32P]ATP or GTP, isolation of the RNA, and digestion with T1 or pancreatic ribonucleases to release labeled 5'-triphosphate termanated oligo...

journal_title：Biochemistry

authors： Miller JS,Burgess RR

更新日期：1978-05-30 00:00:00

abstract：:When they are translated, steroid receptors are assembled into a multiprotein complex containing hsp90, p23, an immunophilin, and often some hsp70. Some of the receptors, such as that for progesterone, have nuclear localization signals that are functional in the absence of hormone, and they move into the nucleus where...

journal_title：Biochemistry

authors： Czar MJ,Galigniana MD,Silverstein AM,Pratt WB

更新日期：1997-06-24 00:00:00

abstract：:By suspending bovine rhodopsin in trehalose-water glass films, it is possible to trap photostates in the light-activation process. Because of the unusually high vitrification temperature of trehalose-water mixtures, this trapping can be accomplished at room temperature. This allows for a facile investigation of the sp...

journal_title：Biochemistry

authors： Sikora S,Little AS,Dewey TG

更新日期：1994-04-19 00:00:00

abstract：:The non-typeable Haemophilus influenzae strain DH1 was isolated from a 25 year old male patient with Fisher syndrome, a postinfectious autoimmune condition characterized by the presence of anti-GQ1b IgG antibodies that target and initiate damage to peripheral nerves. DH1 was found to display an alphaNeuAc(2-8)alphaNeu...

journal_title：Biochemistry

authors： Houliston RS,Koga M,Li J,Jarrell HC,Richards JC,Vitiazeva V,Schweda EK,Yuki N,Gilbert M

更新日期：2007-07-10 00:00:00

abstract：:Apolipoprotein AIV is one of the principal apolipoproteins synthesized by the rat small intestine. We have cloned a cDNA encoding a portion of preapolipoprotein AIV mRNA. A kinetically fractionated cDNA probe highly enriched for the abundant intestinal mucosal mRNA sequences was used to screen a library of recombinant...

journal_title：Biochemistry

authors： Gordon JI,Smith DP,Alpers DH,Strauss AW

更新日期：1982-10-26 00:00:00

abstract：:Chorismate mutase catalyzes the first committed step toward the biosynthesis of the aromatic amino acids, phenylalanine and tyrosine. While this biosynthetic pathway exists exclusively in the cell cytoplasm, the Mycobacterium tuberculosis enzyme has been shown to be secreted into the extracellular medium. The secretor...

journal_title：Biochemistry

authors： Qamra R,Prakash P,Aruna B,Hasnain SE,Mande SC

更新日期：2006-06-13 00:00:00

abstract：:Both the male and the female of Mastomys natalensis, an African rat, have high levels of nerve growth factor (NGF) in their submaxillary glands. Mastomys high molecular weight (HMW) NGF was purified by gel filtration and ion-exchange chromatography and was compared with HMW NGF from the male mouse submaxillary gland. ...

journal_title：Biochemistry

authors： Darling TL,Fahnestock M

更新日期：1988-09-06 00:00:00

abstract：:Fluorescence recovery after photobleaching was used to measure the diffusion coefficient of green fluorescent protein (GFP, 27 kDa) in Escherichia coli in the presence or absence of four coexpressed proteins: cytoplasmic maltose binding protein (42 kDa), tau-40 (45 kDa), alpha-synuclein (14 kDa), or calmodulin (17 kDa...

journal_title：Biochemistry

authors： Slade KM,Baker R,Chua M,Thompson NL,Pielak GJ

更新日期：2009-06-16 00:00:00

abstract：:An assay was developed to study the spontaneous transfer and transbilayer movement (flip-flop) of lipid analogs labeled with the fluorescent fatty acid, 5-(5,7-dimethyl BODIPY)-1-pentanoic acid (C5-DMB-) in large unilamellar lipid vesicles comprised of 1-palmitoyl-2-oleoyl phosphatidylcholine (POPC). The assay is base...

journal_title：Biochemistry

authors： Bai J,Pagano RE

更新日期：1997-07-22 00:00:00

abstract：:Two hybridomas producing monoclonal antibodies to poly(adenosine diphosphate ribose) [poly(ADP-Rib)] were established. One antibody, 10H (IgG3, kappa), bound to most of the poly(ADP-Rib) preparation, which consisted of molecules of various sizes of more than 20 ADP-Rib residues. The binding of this antibody was inhibi...

journal_title：Biochemistry

authors： Kawamitsu H,Hoshino H,Okada H,Miwa M,Momoi H,Sugimura T

更新日期：1984-07-31 00:00:00

abstract：:Two heat-shock proteins that show high identity with the Escherichia coli chaperonin 60 (groEL) and chaperonin 10 (groES) chaperonin proteins were purified and characterized from photolithoautotrophically grown Rhodobacter sphaeroides. The proteins were purified by using sucrose density gradient centrifugation and Mon...

journal_title：Biochemistry

authors： Terlesky KC,Tabita FR

更新日期：1991-08-20 00:00:00

abstract：:Coenzyme A (CoA)-transferases catalyze transthioesterification reactions involving acyl-CoA substrates, using an active-site carboxylate to form covalent acyl anhydride and CoA thioester adducts. Mechanistic studies of class I CoA-transferases suggested that acyl-CoA binding energy is used to accelerate rate-limiting ...

journal_title：Biochemistry

authors： Mullins EA,Kappock TJ

更新日期：2012-10-23 00:00:00

abstract：:The N-terminal formamido group on imidazole- and pyrrole-containing polyamides causes stacked polyamides to bind in the minor groove of DNA in the staggered motif, and it also increases the binding affinity compared to those of non-formamido compounds. To further investigate the role of the N-terminal acylamido in aff...

journal_title：Biochemistry

authors： Westrate L,Mackay H,Brown T,Nguyen B,Kluza J,Wilson WD,Lee M,Hartley JA

更新日期：2009-06-23 00:00:00

abstract：:Helix-helix interactions within membranes are dominated by van der Waals packing motifs and side chain-side chain hydrogen bond formation, which act in tandem to determine the residues that comprise the interface between two given helices. To explore in a systematic manner the tertiary contacts between transmembrane h...

journal_title：Biochemistry

authors： Johnson RM,Heslop CL,Deber CM

更新日期：2004-11-16 00:00:00

abstract：:The rotational motions of immunoglobulin M (IgM) were investigated by the nanosecond fluorescence depolarization technique. The fluorophore epsilon-1-dimethylamino-5-naphthalenesulfonyl-L-lysine (DNS-lysine) was specifically bound in the combining sites of anti-DNS IgM antibodies from the horse, pig, and nurse shark. ...

journal_title：Biochemistry

authors： Holowka DA,Cathou RE

更新日期：1976-07-27 00:00:00

abstract：:Hemophores from Serratia marcescens (HasA(sm)) and Pseudomonas aeruginosa (HasA(p)) bind hemin between two loops, which harbor the axial ligands H32 and Y75. Hemin binding to the Y75 loop triggers closing of the H32 loop and enables binding of H32. Because Yersinia pestis HasA (HasA(yp)) presents a Gln at position 32,...

journal_title：Biochemistry

authors： Kumar R,Lovell S,Matsumura H,Battaile KP,Moënne-Loccoz P,Rivera M

更新日期：2013-04-23 00:00:00

abstract：:Porcine aortic myosin is a smooth muscle contractile protein similar to its striated muscle counterpart. Electrophoresis in sodium dodecyl sulfate indicates that the molecule consists of three classes of subunits with polypeptide chain molecular weights of 192,000, 19,000, and 15,000. At 277 nm the absorption spectrum...

journal_title：Biochemistry

authors： Frederiksen DW

更新日期：1979-05-01 00:00:00

abstract：:The three-dimensional structure of amyloid beta peptide (25-35), which has neurotoxic activity, in lithium dodecyl sulfate micelles was determined by two-dimensional 1H NMR spectroscopy with simulated annealing calculations. A total of 20 converged amyloid beta peptide structures were obtained on the basis of 110 expe...

journal_title：Biochemistry

authors： Kohno T,Kobayashi K,Maeda T,Sato K,Takashima A

更新日期：1996-12-17 00:00:00