Search Results - "Toukdarian, Aresa"

Localization of the Naturally Occurring Plasmid ColE1 at the Cell Pole by SHIYIN YAO, HELINSKI, Donald R, TOUKDARIAN, Aresa

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A Specific Region in the N Terminus of a Replication Initiation Protein of Plasmid RK2 Is Required for Recruitment of Pseudomonas aeruginosa DnaB Helicase to the Plasmid Origin by Zhong, Zhenping, Helinski, Donald, Toukdarian, Aresa

“…Broad host range plasmid RK2 encodes two versions of its essential replication initiation protein, TrfA, using in-frame translational starts spaced 97 amino…”
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A Multifunctional Plasmid-Encoded Replication Initiation Protein Both Recruits and Positions an Active Helicase at the Replication Origin by Jiang, Yong, Pacek, Marcin, Helinski, Donald R., Konieczny, Igor, Toukdarian, Aresa

“…The DnaA replication initiation protein has been shown to be essential for DNA strand opening at the AT-rich region of the replication origin of the…”
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Sequence analysis of a 101-kilobase plasmid required for agar degradation by a Microscilla isolate by ZHENPING ZHONG, TOUKDARIAN, Aresa, HELINSKI, Donald, KNAUF, Vic, SYKES, Sean, WILKINSON, Jane E, O'BRYNE, Colleen, SHEA, Terry, DELOUGHERY, Craig, CASPI, Ron

“…An agar-degrading marine bacterium identified as a Microscilla species was isolated from coastal California marine sediment. This organism harbored a single…”
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TrfA dimers play a role in copy-number control of RK2 replication by Toukdarian, Aresa E, Helinski, Donald R

“…Copy-number regulation of the broad-host-range plasmid RK2 is dependent on the plasmid-encoded initiator protein, TrfA, and the RK2 origin of replication. The…”
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Isolation of Broad-Host-Range Replicons from Marine Sediment Bacteria by SOBECKY, P. A, MINCER, T. J, CHANG, M. C, TOUKDARIAN, A, HELINSKI, D. R

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Copy-Up Mutants of the Plasmid RK2 Replication Initiation Protein are Defective in Coupling RK2 Replication Origins by Blasina, Alessandra, Kittell, Barbara L., Toukdarian, Aresa E., Helinski, Donald R.

“…The broad host range plasmid RK2 replicates and regulates its copy number in a wide range of Gram-negative bacteria. The plasmid-encoded trans-acting…”
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The role of regulatory genes nifA, vnfA, anfA, nfrX, ntrC and rpoN in expression of genes encoding the three nitrogenases of Azotobacter vinelandii by Walmsley, J, Toukdarian, A, Kennedy, C

“…Several regulatory gene mutants of Azotobacter vinelandii were tested for ability to synthesize functional nitrogenase-1 (Nif phenotype), nitrogenase-2 (Vnf),…”
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The Plasmid RK2 Initiation Protein Binds to the Origin of Replication as a Monomer by Toukdarian, A E, Helinski, D R, Perri, S

“…The TrfA protein encoded by the broad host range bacterial plasmid RK2 specifically binds to eight direct repeats (iterons) present at the plasmid replication…”
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Localization of the Naturally Occurring Plasmid CoIE1 at the Cell Pole[white triangle down] by Yao, Shiyin, Helinski, Donald R, Toukdarian, Aresa

“…The naturally occurring plasmid ColE1 was found to localize as a cluster in one or both of the cell poles of Escherichia coli. In addition to the polar…”
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A broad host range replicon with different requirements for replication initiation in three bacterial species by Caspi, Ron, Pacek, Marcin, Consiglieri, Giac, Helinski, Donald R., Toukdarian, Aresa, Konieczny, Igor

“…Plasmid RK2 is unusual in its ability to replicate stably in a wide range of Gram‐negative bacteria. The replication origin (oriV) and a plasmid‐encoded…”
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Plasmid host-range: restrictions to F replication in Pseudomonas by Zhong, Zhenping, Helinski, Donald, Toukdarian, Aresa

“…Host-range, a fundamental property of a bacterial plasmid, is primarily determined by the plasmid replication system. To investigate the basis of the…”
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IMMUNOELECTRON MICROSCOPY OF DEOXYRIBONUCLEIC ACID IN PROCARYOTIC CELLS by MONOSOV, EDWARD Z., TOUKDARIAN, ARESA, HELINSKI, DONALD R., SINGER, S.J.

“…In preliminary experiments, we have applied the ultrathin frozen-sectioning technique to the immunoelectron microscopic labeling of DNA in procaryotic cells…”
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Functional analysis of two putative chromosomal replication origins from Pseudomonas aeruginosa by Jiang, Yong, Yao, Shiyin, Helinski, Donald, Toukdarian, Aresa

“…Two autonomously replicating elements previously isolated from Pseudomonas aeruginosa were characterized in vitro for pre-priming complex formation using…”
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Inhibition of protein and RNA synthesis in Escherichia coli results in declustering of plasmid RK2 by Yao, Shiyin, Toukdarian, Aresa, Helinski, Donald R.

“…Multi-copy plasmids in Escherichia coli are not randomly distributed throughout the cell but are present as clusters of plasmid molecules that are localized at…”
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TrfA dimers play a role in copy-number control of RK2 replication1Published in conjunction with A Wisconsin Gathering Honoring Waclaw Szybalski on the occasion of his 75th year and 20years of Editorship-in-Chief of Gene, 10–11 August 1997, University of Wisconsin, Madison, WI, USA.1 by Toukdarian, Aresa E, Helinski, Donald R

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Nucleotide sequence based characterizations of two cryptic plasmids from the marine bacterium Ruegeria isolate PR1b by Zhong, Zhenping, Caspi, Ron, Helinski, Donald, Knauf, Vic, Sykes, Sean, O’Byrne, Colleen, Shea, Terrance P, Wilkinson, Jane E, DeLoughery, Craig, Toukdarian, Aresa

“…Two plasmids, 76 and 148 kb in size, isolated from Ruegeria strain PR1b were entirely sequenced. These are the first plasmids to be characterized from this…”
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Sequence Analysis of a 101-Kilobase Plasmid Required for Agar Degradation by a MicroscillaIsolate by Zhenping Zhong, Aresa Toukdarian, Donald Helinski, Vic Knauf, Sean Sykes, Jane E. Wilkinson, Colleen O'Bryne, Terry Shea, Craig DeLoughery, Ron Caspi

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Interactions of plasmid-encoded replication initiation proteins with the origin of DNA replication in the broad host range plasmid RK2 by PERRI, S, HELINSKI, D. R, TOUKDARIAN, A

“…The TrfA proteins, encoded by the broad host range plasmid RK2, are required for replication of this plasmid in a variety of Gram-negative bacteria. Two TrfA…”
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A 50-kb Plasmid Rich in Mobile Gene Sequences Isolated from a Marine Micrococcus by Zhong, Zhenping, Caspi, Ron, Mincer, Tracy, Helinski, Donald, Knauf, Vic, Boardman, Kari, Wilkinson, Jane E., Shea, Terry, DeLoughery, Craig, Toukdarian, Aresa

“…A 50,709-bp cryptic plasmid isolated from a marine Micrococcus has been sequenced and found to contain a number of putative mobile genetic elements. The coding…”
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