Linked Life Data

12798231

Source:http://linkedlifedata.com/resource/pubmed/id/12798231

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2003-6-11
pubmed:abstractText
Recently we have accomplished the entire DNA sequence of bacteriophage phiKZ, a giant virus infecting Pseudomonas aeruginosa. The 280334-bp of phiKZ genome is a linear, circularly permutated and terminally redundant, AT-rich dsDNA molecule that contains no sites for NotI, PstI, SacI, SmaI, XhoI and XmaIII endonucleases. Limited homology to other bacteriophages on the DNA and protein levels indicated that phiKZ represents a distinct branch of the Myoviridae family. In this work, we analyzed a group of six P. aeruginosa phages (Lin68, Lin21, PTB80, NN, EL, and RU), which are morphologically similar to phiKZ, have similar genome size and low G+C content. All phages have a broad host range among P. aeruginosa strains, and they are resistant to the inhibitory action of many P. aeruginosa plasmids. The analysis of the genomic DNA by restriction enzymes and DNA-DNA hybridization shows that phages are representative of three phiKZ-like species: phiKZ-type (phiKZ, Lin21, NN and PTB80), EL-type (EL and RU) and Lin68 which has a shorter tail than other phages. Except for related phages EL and RU, all phiKZ-like phages have identical N-terminal amino acid sequences of the major capsid protein. Random genome sequencing shows that the EL and RU phages have no homology to the phiKZ-like phages on DNA level. We propose that the phiKZ, Lin21, NN, PTB80 and Lin68 phages can be included in a new phiKZ genus, and that the EL and RU phages belong to a separate genus within the Myoviridae family. Based on the resistance to many restriction enzymes and the transduction ability, there are indications that over the long pathway of evolution, the phiKZ-like phages probably inherited the capacity to infect different bacterial species.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0923-2508
pubmed:author
pubmed:issnType
Print
pubmed:volume
154
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
269-75
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Myoviridae bacteriophages of Pseudomonas aeruginosa: a long and complex evolutionary pathway.
pubmed:affiliation
State Institute for Genetics of Industrial Microorganisms, 1st Dorozhnii proezd 1, 113545 Moscow, Russia. krylov@genetica.ru
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't