Abstract:
:The mitochondrial regulatory region (mrr) located between the tRNAPhe and tRNAPro genes of mitochondrial DNA (mtDNA) is essential for regulation of replication and transcription of the mitochondrial genome. Polyadenylated short RNAs complementary to the L-strand of the mrr in human cells and similar RNAs (polyadenylation status unknown) in rat and mouse cells have been reported. We now report detection of ca. 0.2 kb polyadenylated mrrRNAs in cultured cells of Chinese hamster, African green monkey, mouse, rat, and human. We isolated a cDNA clone to a rat polyadenylated mrrRNA of 158 bp in length excluding the polyadenyl tail, which spans the region from the light strand promoter (LSP) to the origin of heavy strand replication (OriH). This cDNA contains both an open reading frame encoding a 26 amino acid polypeptide and a 12 nucleotide sequence complementary to the 3'-terminus of rat mitochondrial 12S rRNA. A cDNA clone to a human HeLa cell polyadenylated mrrRNA also contains a 12 nucleotide region complementary to the human mitochondrial 12S rRNA. We used a mitochondrial genome-deficient HeLa cell line, rho0 HeLa, and a derived cybrid cell line, HeEB, with a reconstituted mitochondrial genome, to demonstrate that the occurrence of the mrrRNA is dependent on the presence of a mitochondrial genome, and these polyadenylated mrrRNAs are transcribed from the mitochondrial genome. Our results further substantiate the common existence of polyadenylated mrrRNAs among mammals and support previously proposed hypotheses for the multi-functional nature of polyadenylated mrrRNA.
journal_name
J Biochemjournal_title
Journal of biochemistryauthors
Nakamichi N,Rhoads DD,Hayashi JI,Kagawa Y,Matsumura Tdoi
10.1093/oxfordjournals.jbchem.a021950subject
Has Abstractpub_date
1998-03-01 00:00:00pages
392-8issue
3eissn
0021-924Xissn
1756-2651journal_volume
123pub_type
杂志文章abstract::Human serum was shown to contain N-acetyllactosamine: N-acetylglucosaminyltransferase activity. The reaction product was hydrolyzed by beta-N-acetylglucosaminidase and released [14C]N-acetylglucosamine, indicating that the N-acetylglucosaminyl residue was beta-linked to N-acetyllactosamine. Methylation and hydrolysis ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134778
更新日期:1984-06-01 00:00:00
abstract::Stable cell lines expressing the gastric proton pump alpha- and/or beta-subunits were constructed. The cell line co-expressing the alpha- and beta-subunits showed inward Rb(+) transport, which was activated by Rb(+) in a concentration-dependent manner. In the alpha+beta-expressing cell line, rapid recovery of intracel...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a003183
更新日期:2002-06-01 00:00:00
abstract::The cytosol of human erythrocytes was found to contain a Ca2+-dependent thiol protease (calpain) and its specific inhibitor (calpastatin) by DEAE-cellulose chromatography at pH 8.0, although no proteolytic activity toward casein was detected in the unfractionated hemolysate. The protease required only 40 microM Ca2+ f...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133659
更新日期:1981-12-01 00:00:00
abstract::beta-Hydroxyisovalerylshikonin (beta-HIVS), which was isolated from the plant, Lithospermium radix, inhibited the growth of various lines of cancer cells derived from human solid tumors at low concentrations between 10(-8) and 10(-6) M. When HL-60 cells were treated with 10(-6) M beta-HIVS for 3 h, characteristic feat...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a022255
更新日期:1999-01-01 00:00:00
abstract::Cytokinin binding protein was isolated and purified from tobacco leaves by bioaffinity chromatography on a Sepharose column on which benzyladenine (BA), synthetic cytokinin, had been introduced as an affinity ligand by the cyanogen bromide method. The purified protein bound specifically to cytokinins; its binding was ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131517
更新日期:1977-03-01 00:00:00
abstract::The three-dimensional structure of cytochrome c-553 isolated from sulfate-reducing bacterium, Desulfovibrio vulgaris Miyazaki F strain, has been determined by the multi-wavelength anomalous dispersion technique with use of synchrotron radiation. The result shows that bacterial S-class cytochromes c have a variety of f...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123267
更新日期:1990-11-01 00:00:00
abstract::Thrombomodulin (TM) is a thrombin receptor on the surface of endothelial cells that converts thrombin from a procoagulant to an anticoagulant. Thrombin promotes invasion by various tumor cells, and positive or negative correlations are found between the expression of TM and tumorigenesis in some patients. In this stud...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvi070
更新日期:2005-05-01 00:00:00
abstract::Inhibitory PAS domain protein (IPAS) is a dual function protein acting as a transcriptional repressor and as a pro-apoptotic protein. Simultaneous dual-color single-molecule imaging of EGFP-IPAS coexpressed with Mit-TagRFP-T in living HeLa cells revealed that fraction of EGFP-IPAS was arrested in the nucleus and on mi...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvw068
更新日期:2017-03-01 00:00:00
abstract::The sequential in situ digestion of proteins immobilized on polyvinylidene difluoride (PVDF) has been systematically designed and optimized. The method consists of immobilization of the proteins on PVDF, S-carboxymethylation, and then successive in situ digestions using specific proteases. In order to obtain high yiel...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021389
更新日期:1996-07-01 00:00:00
abstract::Ras is a signal-transducing, guanine nucleotide-binding protein for various membrane receptors including tyrosine kinase receptors. Ras participates in the regulation of cell proliferation, differentiation, and morphology. Activated ras oncogenes have been identified in various forms of human cancer including epitheli...
journal_title:Journal of biochemistry
pub_type: 杂志文章,评审
doi:10.1093/oxfordjournals.jbchem.a022519
更新日期:1999-11-01 00:00:00
abstract::Two-dimensional gel electrophoresis using 0.5% agarose gel in the 1st dimension and 2-12% gradient polyacrylamide gel in the 2nd dimension succeeded in the isoelectrical focusing of connectin, a giant myofibrillar protein of approximately 3,000 kDa. Immunoblotting with an anti-connectin monoclonal antibody, SM1-36-2, ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123232
更新日期:1990-10-01 00:00:00
abstract::Identification of single-stranded regions in Torulopsis utilis 5S RNA was attempted by the use of Nuclease S1, a single-strand specific endonuclease. When T. utilis 5S RNA was subjected to prolonged incubation with Nuclease S1, about 50% of the substrate 5S RNA remained as large oligonucleotide "cores." Such Nuclease...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131566
更新日期:1977-04-01 00:00:00
abstract::We isolated three genomic clones of rat P-450(11 beta) genes (CYP11B). Two of them corresponded to 11 beta-hydroxylase gene (CYP11B1) and aldosterone synthase gene (CYP11B2), respectively. The third one was a novel gene resembling both CYP11B1 and CYP11B2, and was named CYP11B3 gene (CYP11B3). CYP11B2 and CYP11B3 are ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a124018
更新日期:1993-02-01 00:00:00
abstract::The active site of thermolysin is composed of one zinc ion and five polypeptide regions [N-terminal sheet (Asn112-Trp115), alpha-helix 1 (Val139-Thr149), C-terminal loop 1 (Asp150-Gly162), alpha-helix 2 (Ala163-Val176) and C-terminal loop 2 (Gln225-Ser234)]. To explore their catalytic roles, we introduced single amino...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvn140
更新日期:2009-01-01 00:00:00
abstract::Epithelial-mesenchymal transition (EMT) is a morphogenetic process of cells that adopt an epithelial organization in their developmental ontogeny or homeostatic maintenance. Abnormalities in EMT regulation result in many malignant tumours in the human body. Tumours associated with the haematopoietic system, however, a...
journal_title:Journal of biochemistry
pub_type: 杂志文章,评审
doi:10.1093/jb/mvy063
更新日期:2018-10-01 00:00:00
abstract::DL-[14C]Leucine or L-[3H]leucine was injected intraperitoneally into pyridoxine-deficient and control rats, and the subsequent incorporation of the radioactivities into aspartate aminotransferase (AspAT) isozymes and the total soluble protein in the liver was measured. AspAT in the cytosol (AspATc) was separated into ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135556
更新日期:1986-03-01 00:00:00
abstract::Cucumisin was isolated from prince melon sarcocarp by means of a simple purification procedure. Serine protease inhibitors such as soybean trypsin inhibitor, ovomucoid, and aprotinin had no effect on the enzyme activity. alpha 2-Macroglobulin showed 38% inhibition of the original caseinolytic activity of cucumisin. Th...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a124817
更新日期:1995-05-01 00:00:00
abstract::The membrane protein syntaxin (originally named HPC-1) is involved in vesicle trafficking and required for neurotransmitter release at nerve terminals. The presence of syntaxin on target membranes is hypothesized to confer specificity to targeting and fusion via interactions with complementary vesicle-associated prote...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a022337
更新日期:1999-04-01 00:00:00
abstract::Midkine (MK) is a 13-kDa heparin-binding growth/differentiation factor, and its interaction with heparan sulfate proteoglycan is important in promotion of neurite outgrowth. This study was performed to reveal the species of syndecans that interact with MK during embryogenesis of the central nervous system in the rat. ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:
更新日期:1997-02-01 00:00:00
abstract::Activation of muscarinic acetylcholine receptors (mAChRs) causes the rapid release of Ca2+ from intracellular stores and a sustained influx of external Ca2+ in PC12D cells, a subline of the widely studied cell line PC12. Release of Ca2+ from intracellular stores and a sustained influx of Ca2+ are also observed followi...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvj064
更新日期:2006-03-01 00:00:00
abstract::Mitochondrial porin is a major integral membrane protein of the outer membrane. To assess the stop-transfer sequence in the yeast porin molecule (P), we constructed the following chimeric proteins. (i) The signal sequence of interleukin 2, a secretory protein, was fused to the amino-terminus of porin (SP). (ii) The ma...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123884
更新日期:1992-08-01 00:00:00
abstract::A fifth and new DFP-sensitive alkaline proteinase E, with strong esterase activity toward Ac-(Ala)3-OMe was found in pronase, a protease mixture from St. griseus K-1. Proteinase E was shown to be different from the elastase [EC 3.4.21.11]-like enzyme or subtilisin [EC 3.4.21.14]like enzyme, and alkaline proteinase A, ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131153
更新日期:1976-05-01 00:00:00
abstract::S-RNase is associated with the gametophytic self-incompatibility of flowering plants in Solanaceae and, on the basis of sequence homology, belongs to the RNase T2 family. To identify the active site residues in S-RNase, Nicotiana alata S6-RNase was studied by chemical modification. S6-RNase was inactivated with iodoac...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/118.5.1007
更新日期:1995-11-01 00:00:00
abstract::The mitogen-activated protein (MAP) kinase cascades play essential roles in a variety of cell processes by influencing transcriptional or translational regulation. ERKs play a central role in survival and mitogenic signaling, while JNKs and p38 MAP kinases are preferentially activated by environmental stresses and are...
journal_title:Journal of biochemistry
pub_type: 杂志文章,评审
doi:10.1093/jb/mvh134
更新日期:2004-09-01 00:00:00
abstract::Proton translocating ATPase (F0F1) from bovine heart mitochondria was reconstituted into planar phospholipid bilayers, and its electrogenicity was directly demonstrated. The F0F1 ATPase was solubilized using 3-[(3-cholamidopropyl)-dimethylammonio]-1-propanesulfonic acid (CHAPS) as a detergent followed by sucrose densi...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122189
更新日期:1987-12-01 00:00:00
abstract::Endonuclease V (Endo V) is a DNA repair enzyme that recognizes deoxyinosine and cleaves the second phosphodiester bond on the 3' side of the deaminated base lesion. A database search revealed the presence of homologous genes for Endo V in most archaeal species, but the absence in some methanogenic species. We cloned a...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvu010
更新日期:2014-05-01 00:00:00
abstract::We have previously reported that calpastatin, an endogenous inhibitory protein of calpain, is cleaved by a caspase-3-like protease during apoptosis in human Jurkat T cells [Kato, M. et al. (2000) J. Biochem. 127, 297-305]. In this study, we found that nonmuscle myosin heavy chain-A (NMHC-A) is cleaved during apoptosis...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvi015
更新日期:2005-02-01 00:00:00
abstract::Transient and steady state kinetics were studied in the interactions of ATP with acto-H-meromyosin reconstituted from bovine arterial heavy-meromyosin (HMM) and rabbit skeletal muscle F-actin. The results showed that the rate of dissociation of the hybrid acto-HMM induced by ATP was slower than the rate of the fluores...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a132129
更新日期:1978-08-01 00:00:00
abstract::A partially purified fraction (Component I) which catalyzed the ATP-PPi exchange reaction dependent only on valine and glycine among the five constituent amino acids of gramicidin A was obtained from crude extracts of Bacillus brevis ATCC 8185, which produces both gramicidin A and tyrocidines. This fraction was found ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131446
更新日期:1977-01-01 00:00:00
abstract::Troponin-tropomyosin complex from skeletal muscles was observed to regulate sliding movement of actin filaments on myosin molecules in a manner independent of their ATPase activity. When actin molecules were crosslinked with DSS (disuccinimidyl suberate), the myosin ATPase activity in the presence of the modified acti...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021567
更新日期:1997-01-01 00:00:00