Abstract:
:Pseudomonas sp. 101 carboxyl proteinase (PCP) and Xanthomonas sp. T-22 carboxyl proteinase (XCP), the first and second unique carboxyl proteinases from prokaryotes to be isolated and characterized, are not inhibited by the classical carboxyl proteinase inhibitor pepstatin. In this study, we elucidated their subsite preferences by using a series of synthetic chromogenic substrates, Lys-Pro-Ile(P3)-Glu(P2)-Phe*Nph-Arg(P2')-Leu(P3') (Nph is p-nitrophenylalanine, Phe*Nph is the cleavage site) with systematic substitutions at the P3, P2, P2', and P3' positions. Among 45 substrates tested, the best substrate for PCP had a Leu replacement at the P2 position (kcat = 27.2 s-1, Km = 4.22 microM, kcat/Km = 6.43 microM-1.s-1), and that for XCP had an Ala replacement at the P3 position (kcat = 79.4 s-1, Km = 6.05 microM, kcat/Km = 13.1 microM-1. s-1). PCP and XCP preferred such charged amino acid residues as Glu, Asp, Arg, or Lys at the P2' position. This suggested that the S2' subsites of PCP and XCP are occupied by hydrophilic residues, similar to that of pepstatin-insensitive carboxyl proteinase from Bacillus coagulans J-4 [Shibata et al. (1998) J. Biochem. 124, 642-647]. In contrast, the S2' subsite of pepstatin-sensitive carboxyl proteinases (aspartic proteinases) is hydrophobic in nature. Thus, the hydophilic nature of the S2' subsite appears to be a distinguishing feature of pepstatin-insensitive carboxyl proteinases.
journal_name
J Biochemjournal_title
Journal of biochemistryauthors
Narutaki S,Dunn BM,Oda Kdoi
10.1093/oxfordjournals.jbchem.a022271subject
Has Abstractpub_date
1999-01-01 00:00:00pages
75-81issue
1eissn
0021-924Xissn
1756-2651journal_volume
125pub_type
杂志文章abstract::Some alpha(1,3)fucosylated oligosaccharides serve as counter receptors to lectin-like adhesion proteins or are expressed with temporal precision during embryogenesis, and alpha(1, 3)fucosyltransferase is a key enzyme in the production of these oligosaccharides. Two alpha(1,3)-fucosyltransferase genes, designated zFT1 ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a022357
更新日期:1999-04-01 00:00:00
abstract::Temperature and solvent effects on reaction center structures were examined in two thermophilic photosynthetic bacteria, Chloroflexus aurantiacus and Chromatium tepidum, in order to gain insight into the interactions among the reaction center proteins and pigment systems. Thermal stability of the reaction centers was ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123624
更新日期:1991-10-01 00:00:00
abstract::We characterized the taurine transport system in human intestinal Caco-2 cells and showed that it is subject to adaptive regulation. The activity of taurine transport in Caco-2 cells was evaluated by means of an Na+- and Cl(-)-dependent high-affinity transport system, the characteristics of which were similar to those...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021698
更新日期:1997-06-01 00:00:00
abstract::Isoleucyl-tRNA formation and isoleucine-dependent PPi-ATP exchange catalyzed by purified isoleucyl-tRNA synthetase [EC 6.1.1.5] of Escherichia coli were studied in the presence of various amounts of either Mg2+, Ca2+, Fe2+, Ni2+, or Cu2+. In the presence of Mg2+, isoleucine-dependent PPi-ATP exchange was observed in p...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131300
更新日期:1976-09-01 00:00:00
abstract::Partial amino acid sequences of two mitochondrial cytochrome P-450's, P-450 (SCC) and P-450 (11 beta), and two microsomal cytochrome P-450's, P-450 (C-21), and P-450 (17 alpha, Lyase), from adrenal cortex were analyzed and compared. Mitochondrial P-450's and microsomal P-450's were different in the amino acid sequence...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:
更新日期:1983-11-01 00:00:00
abstract::In the preceding papers, we showed that one of the two complementar factors of polypeptide chain elongation factor 1 (EF-1) from pig liver, EF-1alpha, functionally corresponds to bacterial EF-Tu (Nagata, S., Iwasaki, K., and Kaziro, Y. (1976) Arch. Biochem. Biophys. 172, 168), while the other, EF-1betagamma, as well a...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131929
更新日期:1978-02-01 00:00:00
abstract::A novel phenylserine dehydratase [EC 4.2.1.-], which catalyzes the deamination of L-threo-3-phenylserine to yield phenylpyruvate and ammonia, was purified to homogeneity from a crude extract of Pseudomonas pickettii PS22 isolated from soil. The enzyme was a monomer having a molecular mass of about 38 kDa and contained...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021297
更新日期:1996-04-01 00:00:00
abstract::MicroRNAs (miRNAs) are a class of ∼22 nt non-coding RNAs that control diverse biological functions in animals, plants and unicellular eukaryotes by promoting degradation or inhibition of translation of target mRNAs. miRNA expression is often tissue specific and developmentally regulated. Aberrant expression of miRNAs ...
journal_title:Journal of biochemistry
pub_type: 杂志文章,评审
doi:10.1093/jb/mvq096
更新日期:2010-10-01 00:00:00
abstract::Pyruvate decarboxylase [2-oxo acid carboxy-lyase, EC 4.1.1.1] was isolated from sweet potato roots and was partially purified from healthy and diseased tissues. There was no appreciable difference in properties between the enzymes from healthy and diseased tissues. The molecular weight of the enzyme was found to be 24...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:
更新日期:1975-06-01 00:00:00
abstract::The Ca2+-sensitive ATPase activity of rabbit skeletal myofibrils disappeared completely after treatment with a solution containing CDTA, a strong divalent cation chelator, at a low ionic strength. A gel electrophoretic study revealed that all troponin C and about half of myosin light chain 2 were removed from the myof...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a121913
更新日期:1987-02-01 00:00:00
abstract::To understand the mechanism of activation of a receptor by its agonist, the excitation and relaxation processes of the vibrational states of the receptor should be examined. As a first approach to this problem, we calculated the normal vibrational modes of agonists (glutamate and kainate) and an antagonist (6-cyano-7-...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a002931
更新日期:2001-06-01 00:00:00
abstract::Bromoacetamide derivatives having n-alkyl substituents (BrCH2CONH(CH2)nH, 1-n) and carboxyalkyl substituents (BrCH2CONH(CH2)nCOOH, 2-n) react with His-15 in lysozyme exclusively at N epsilon 2 at pH 5.5 and 40 degree C. Kinetic studies suggest that lysozyme has a small hydrophobic pocket that binds these reagents in t...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134632
更新日期:1984-02-01 00:00:00
abstract::N-acylethanolamines (NAEs) are a class of bioactive lipid molecules in animal tissues, including the endocannabinoid anandamide and the anti-inflammatory substance N-palmitoylethanolamine. Enzymatic hydrolysis of NAEs is considered to be an important step to regulate their endogenous levels. Lysosomal NAE-hydrolysing ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvn122
更新日期:2008-11-01 00:00:00
abstract::The kinetic specificities of BPN' and Carlsberg subtilisins [EC 3.4.21.14] were examined with various nucleus-substituted derivatives of Nalpha-acetylated aromatic amino acid methyl esters for mapping their hydrophobic binding sites in comparison with that of alpha-chymotrypsin. The Carlsberg enzyme was generally much...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a132157
更新日期:1978-09-01 00:00:00
abstract::Manganese ion, like Mg2+, has been found to produce high biosynthetic activity of the unadenylylated form of glutamine synthetase obtained from Mycobacterium smegmatis, and the activity with each of these cations was decreased by the adenylylation of the enzyme. Further, the gamma-glutamyltransferase reaction was cata...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135145
更新日期:1985-04-01 00:00:00
abstract::Ten Drosophila thorax proteins (six myosin light chains and four proteins called a, b, c, d) were found to have high affinities with Ca2+. This was proved after subjecting the total Drosophila thorax proteins to two-dimensional (2D) transblot, followed by 45Ca2+ autoradiography. Three proteins (a, c, d) showed Ca2+ de...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122495
更新日期:1988-10-01 00:00:00
abstract::We analyzed lipids extracted from human hepatoma HepG2 cells using a high performance liquid chromatograph equipped with a reversed phase column and found a compound with a mass spectrum showing certain diagnostic ion fragments of 1-methoxy-5-polyprenyl-phenol, a known intermediate of ubiquinone biosynthesis. Universa...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123308
更新日期:1990-12-01 00:00:00
abstract::A gene for a methionine aminopeptidase (MAP; EC 3.4.11.18), which catalyzes the removal of amino-terminal methionine from the growing peptide chain on the ribosome, has been cloned from the hyperthermophilic Archaeon, Pyrococcus furiosus, by a novel method effectively using its cosmid protein library, sequenced and ex...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021831
更新日期:1997-10-01 00:00:00
abstract::Using an immunoblotting technique, we have studied the processing of plasma proteins in subcellular fractions of rat liver including rough and smooth microsomes and the Golgi subfractions. Each subcellular fraction was directly subjected to SDS-polyacrylamide gel electrophoresis and analyzed by immunoblotting with ant...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a121876
更新日期:1986-12-01 00:00:00
abstract::The DNA fragment containing the phoS gene, a regulatory gene for alkaline phosphatase, has been isolated from Escherichia coli K-12 chromosomal DNA by cutting off the DNA with Hind III restriction enzyme and by cloning the gene with plasmid vector pTP 4 which was constructed in this study. The isolated fragment was of...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133972
更新日期:1982-09-01 00:00:00
abstract::Nascent peptides on free and bound ribosomes prepared from rat liver were labeled and released with [3H]puromycin, and the amounts of the nascent peptides of two secretory proteins, serum albumin and transferrin, were determined by immunoprecipitation with specific antibodies. An appreciable amount of serum albumin na...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133348
更新日期:1981-05-01 00:00:00
abstract::Gastric cancer (GC) is one of the most common cancers in gastrointestinal malignant tumours. Long non-coding RNAs were widely reported to play a significant role in the regulation of occurrence or development of tumours. Bioinformatics analysis and a wide range of experiments were conducted to explore the expression s...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvaa065
更新日期:2020-11-01 00:00:00
abstract::1. The addition of palmitic acid or myristic acid to a medium containing delipidated fetal bovine serum resulted in severe inhibition of V79-R cell growth. The degree of inhibition by palmitic acid was concentration dependent. Simultaneous addition of oleic acid protected the cells from the inhibition by palmitic acid...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133855
更新日期:1982-05-01 00:00:00
abstract::A 1H NMR study of a selectively deuterated mouse anti-dansyl monoclonal antibody is reported. Two-dimensional homonuclear Hartmann-Hahn (2D-HOHAHA) spectroscopy was found to be effective for establishing the connectivity between the C2-H and C4-H protons of His residues in the antibody molecule. It has been concluded ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122858
更新日期:1989-09-01 00:00:00
abstract::Using an F-actin affinity column, a 60 kDa fragment of a 71 kDa F-actin-binding protein was partially purified from Tetrahymena pyriformis. After digestion of the 60 kDa fragment with cyanogen bromide, the N-terminal 21-amino acid sequence of one of the resulting peptides was found to show sequence similarity to a reg...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021980
更新日期:1998-04-01 00:00:00
abstract::Angiogenesis, a formation of neovessels, is regulated by the local balance between angiogenesis stimulators and inhibitors. A number of such endogenous regulators of angiogenesis have been found in the body. Recently, vasohibin-1 (VASH1) was isolated as a negative feedback regulator of angiogenesis produced by endothe...
journal_title:Journal of biochemistry
pub_type: 杂志文章,评审
doi:10.1093/jb/mvs128
更新日期:2013-01-01 00:00:00
abstract::Binding of native connectin (2,100 kDa fragment of alpha-connectin) to myosin filaments was investigated using a sedimentation technique and densitometric estimations of the separated proteins. In the presence of 60 mM KCl and 5 mM phosphate buffer, pH 7.0, as much as 1.5 mol of connectin was bound to 1 mol of myosin,...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122661
更新日期:1989-02-01 00:00:00
abstract::The fructose-1,6-bisphosphate aldolase gene from the thermophilic bacterium, Anoxybacillus gonensis G2, was cloned and sequenced. Nucleotide sequence analysis revealed an open reading frame coding for a 30.9 kDa protein of 286 amino acids. The amino acid sequence shared approximately 80-90% similarity to the Bacillus ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvm085
更新日期:2007-06-01 00:00:00
abstract::The effects of polyamines on the breakdown of synthetic polynucleotides [poly(A), poly(C), and poly(U)] by E. coli ribonuclease I [ribonucleate 3'-oligonucleotidohydrolase, EC 3.1.4.23] and ribonuclease II [EC 3.1.4.1] have been studied. The degradation of poly(C) by RNase II was stimulated by spermine and spermidine,...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131469
更新日期:1977-02-01 00:00:00
abstract::Thermal denaturation of cytochromes c of horse, cow, and Candida krusei in aqueous guanidine hydrochloride in the neutral pH region was studied by means of absorption and optical rotation measurements. The values of standard free energy change upon denaturation were estimated over the temperature range from 3 to 51 de...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:
更新日期:1977-05-01 00:00:00