The open reading frame 1-encoded (‘36K’) protein of Carnation Italian ringspot virus localizes to mitochondria

2001 ◽  
Vol 82 (1) ◽  
pp. 29-34 ◽  
Author(s):  
L. Rubino ◽  
F. Weber-Lotfi ◽  
A. Dietrich ◽  
C. Stussi-Garaud ◽  
M. Russo
Keyword(s):  
Outer Membrane ◽  
Fluorescent Protein ◽  
Amorphous Material ◽  
Subcellular Fractionation ◽  
Open Reading Frame ◽  
Ringspot Virus ◽  
Mitochondrial Outer Membrane ◽  
Intermembrane Space ◽  
Reading Frame ◽  
Open Reading Frame 1

The localization of the 36 kDa (‘36K’) protein encoded by open reading frame 1 of Carnation Italian ringspot virus was studied in infected cells and in cells transiently expressing the 36K protein fused to green fluorescent protein (GFP). Subcellular fractionation demonstrated that the 36K protein accumulated in fractions containing mostly mitochondria. Fluorescence microscopy of transiently transformed cells showed that the 36K–GFP fusion protein accumulated in structures which could be stained with the mitochondrial-specific dye MitoTracker. However, these structures were larger than normal mitochondria and were irregular in shape and distribution in the cytoplasm. Electron microscopy showed severe alterations of mitochondria, which were often clumped. The stroma was more electron-opaque, the cristae were irregularly shaped, the intermembrane space was enlarged and the outer membrane was covered with an electron-dense amorphous material whose nature could not be determined. The organelle-targeted 36K protein seems to promote the overgrowth of the mitochondrial outer membrane.

scholarly journals Identification by Subtractive Hybridization of a Novel Insertion Sequence Specific for Virulent Strains ofPorphyromonas gingivalis

1999 ◽  
Vol 67 (11) ◽  
pp. 5621-5625 ◽  
Author(s):  
Koichi Sawada ◽  
Susumu Kokeguchi ◽  
Hiroshi Hongyo ◽  
Satoko Sawada ◽  
Manabu Miyamoto ◽  
...  
Keyword(s):  
Membrane Protein ◽  
Outer Membrane ◽  
Outer Membrane Protein ◽  
Subtractive Hybridization ◽  
Open Reading Frame ◽  
Specific Marker ◽  
Avirulent Strain ◽  
Target Sequence ◽  
Dna Fragments ◽  
Reading Frame

ABSTRACT Subtractive hybridization was employed to isolate specific genes from virulent Porphyromonas gingivalis strains that are possibly related to abscess formation. The genomic DNA from the virulent strain P. gingivalis W83 was subtracted with DNA from the avirulent strain ATCC 33277. Three clones unique to strain W83 were isolated and sequenced. The cloned DNA fragments were 885, 369, and 132 bp and had slight homology with only Bacillus stearothermophilus IS5377, which is a putative transposase. The regions flanking the cloned DNA fragments were isolated and sequenced, and the gene structure around the clones was revealed. These three clones were located side-by-side in a gene reported as an outer membrane protein. The three clones interrupt the open reading frame of the outer membrane protein gene. This inserted DNA, consisting of three isolated clones, was designated IS1598, which was 1,396 bp (i.e., a 1,158-bp open reading frame) in length and was flanked by 16-bp terminal inverted repeats and a 9-bp duplicated target sequence. IS1598 was detected inP. gingivalis W83, W50, and FDC 381 by Southern hybridization. All three P. gingivalis strains have been shown to possess abscess-forming ability in animal models. However, IS1598 was not detected in avirulent strains of P. gingivalis, including ATCC 33277. The IS1598 may interrupt the synthesis of the outer membrane protein, resulting in changes in the structure of the bacterial outer membrane. The IS1598 isolated in this study is a novel insertion element which might be a specific marker for virulent P. gingivalisstrains.

scholarly journals Quasispecies of TT Virus (TTV) with Sequence Divergence in Hypervariable Regions of the Capsid Protein in Chronic TTV Infection

1999 ◽  
Vol 73 (11) ◽  
pp. 9604-9608 ◽  
Author(s):  
Tsutomu Nishizawa ◽  
Hiroaki Okamoto ◽  
Fumio Tsuda ◽  
Tatsuya Aikawa ◽  
Yoshiki Sugai ◽  
...  
Keyword(s):  
Amino Acids ◽  
Capsid Protein ◽  
Immune Surveillance ◽  
Sequence Divergence ◽  
Open Reading Frame ◽  
Amino Acid Substitutions ◽  
Reading Frame ◽  
Tt Virus ◽  
Hypervariable Regions ◽  
Open Reading Frame 1

ABSTRACT Three hypervariable regions were identified in a central portion of open reading frame 1 of TT virus DNA, which codes for a putative capsid protein of 770 amino acids. TT virus circulates as quasispecies, with many amino acid substitutions in hypervariable regions, to evade immune surveillance of the hosts and to establish a persistent infection.

DNA vaccination of pigs with open reading frame 1–7 of PRRS virus

Vaccine ◽  
2004 ◽  
Vol 22 (27-28) ◽  
pp. 3628-3641 ◽  
Author(s):  
Annette Malene Barfoed ◽  
Merete Blixenkrone-Møller ◽  
Merethe Holm Jensen ◽  
Anette Bøtner ◽  
Søren Kamstrup
Keyword(s):  
Dna Vaccination ◽  
Open Reading Frame ◽  
Reading Frame ◽  
Prrs Virus ◽  
Open Reading Frame 1

Development of a Self-Cloning System for Actinomadura verrucosospora and Identification of Polyketide Synthase Genes Essential for Production of the Angucyclic Antibiotic Pradimicin

1999 ◽  
Vol 65 (6) ◽  
pp. 2703-2709 ◽  
Author(s):  
Tohru Dairi ◽  
Yoshimitsu Hamano ◽  
Tamotsu Furumai ◽  
Toshikazu Oki
Keyword(s):  
Nucleotide Sequence ◽  
Polyketide Synthase ◽  
Selectable Marker ◽  
Plasmid Vector ◽  
Open Reading Frame ◽  
Antibiotic Biosynthesis ◽  
Nucleotide Sequence Analysis ◽  
Reading Frame ◽  
Cloning System ◽  
Open Reading Frame 1

ABSTRACT A self-cloning system for Actinomadura verrucosospora, a producer of the angucyclic antibiotic pradimicin A (PRM A), has been developed. The system is based on reproducible and reliable protoplasting and regeneration conditions for A. verrucosospora and a novel plasmid vector that consists of a replicon from a newly found Actinomadura plasmid and a selectable marker cloned from the Actinomadurastrain. The system has an efficiency of more than 105CFU/microgram of DNA. Using this system, we have cloned and identified the polyketide synthase (PKS) genes essential for PRM A biosynthesis from A. verrucosospora. Nucleotide sequence analysis of the 3.5-kb SalI-SphI fragment showed that ketosynthase subunits (open reading frame 1 [ORF1] and ORF2) of the essential PKS genes have strong similarities (59 to 89%) to those for angucyclic antibiotic biosynthesis.

scholarly journals Nucleotide sequence analysis of a gene from Burkholderia (Pseudomonas) cepacia encoding an outer membrane lipoprotein involved in multiple antibiotic resistance.

1996 ◽  
Vol 40 (2) ◽  
pp. 307-313 ◽  
Author(s):  
J L Burns ◽  
C D Wadsworth ◽  
J J Barry ◽  
C P Goodall
Keyword(s):  
Cystic Fibrosis ◽  
Antibiotic Resistance ◽  
Outer Membrane ◽  
Open Reading Frame ◽  
Pseudomonas Cepacia ◽  
Multiple Antibiotic Resistance ◽  
Reading Frame ◽  
Outer Membrane Lipoprotein ◽  
Membrane Lipoprotein ◽  
Antibiotic Efflux

Antibiotic-resistant Burkholderia (Pseudomonas) cepacia is an important etiologic agent of nosocomial and cystic fibrosis infections. The primary resistance mechanism which has been reported is decreased outer membrane permeability. We previously reported the cloning and characterization of a chloramphenicol resistance determinant from an isolate of B. cepacia from a patient with cystic fibrosis that resulted in decreased drug accumulation. In the present studies we subcloned and sequenced the resistance determinant and identified gene products related to decreased drug accumulation. Additional drug resistances encoded by the determinant include resistances to trimethoprim and ciprofloxacin. Sequence analysis of a 3.4-kb subcloned fragment identified one complete and one partial open reading frame which are homologous with two of three components of a potential antibiotic efflux operon from Pseudomonas aeruginosa (mexA-mexB-oprM). On the basis of sequence data, outer membrane protein analysis, protein expression systems, and a lipoprotein labelling assay, the complete open reading frame encodes an outer membrane lipoprotein which is homologous with OprM. The partial open reading frame shows homology at the protein level with the C terminus of the protein product of mexB. DNA hybridization studies demonstrated homology of an internal mexA probe with a larger subcloned fragment from B. cepacia. The finding of multiple antibiotic resistance in B. cepacia as a result of an antibiotic efflux pump is surprising because it has long been believed that resistance in this organism is caused by impermeability to antibiotics.

Correlation of long interspersed element-1 open reading frame 1 and c-Met proto-oncogene protein expression in ovarian cancer

2019 ◽  
Vol 41 (11) ◽  
pp. 1293-1299 ◽  
Author(s):  
Eun-Ji Ko ◽  
Young Lim Oh ◽  
Heung Yeol Kim ◽  
Wan Kyu Eo ◽  
Hongbae Kim ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Protein Expression ◽  
Open Reading Frame ◽  
Reading Frame ◽  
Long Interspersed Element ◽  
Oncogene Protein ◽  
Open Reading Frame 1

scholarly journals Differential translational initiation of lbp mRNA is caused by a 5′ upstream open reading frame 1

FEBS Letters ◽  
1997 ◽  
Vol 411 (2-3) ◽  
pp. 245-250 ◽  
Author(s):  
Maria Mittag ◽  
Christoph Eckerskorn ◽  
Kerstin Strupat ◽  
J.Woodland Hastings
Keyword(s):  
Open Reading Frame ◽  
Upstream Open Reading Frame ◽  
Translational Initiation ◽  
Reading Frame ◽  
Open Reading Frame 1
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