World Journal of Engineering and Technology
Volume 4, Issue 3 (August 2016)
ISSN Print: 2331-4222 ISSN Online: 2331-4249
Google-based Impact Factor: 0.80 Citations
The Structural Proteins of Bdellovibrio bacteriovorus Bacteriophage MAC-1 ()
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ABSTRACT
In the present investigation the structural proteins associated with MAC-1 bacteriophage have been characterized using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE); tandem mass spectrometry of protein bands from SDS-PAGE gel; from the open reading frames (ORFs) deduced from MAC-1 genome sequence and amino acid sequence homology searches from the Uniprot database (up000002418). Results have led to the identification of at least three structural proteins associated with MAC-1 phage genome. They are: capsid protein (~55,000-daltons); spike protein (~22,000-daltons) and a low molecular weight DNA binding protein (~4000-dal- tons). In addition, two other minor proteins were tentatively identified as replicative and scaffold proteins based on two to three unique peptides from mass spectrometry data. However, other proteins coded (ORFs) by phage genome remain to be identified.
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