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"In silico"


From Wikipedia
If the target host* of a phage therapy treatment is not an animal the term "biocontrol" (as in phage-mediated biocontrol of bacteria) is usually employed, rather than "phage therapy".

In silico
From:"Genomics,Proteomics and Clinical Bacteriology",N.Woodford and Alan P.Johnson

Phrase that emphasizes the fact that many molecular biologists spend increasing amounts of their time in front of a computer screen, generating hypotheses that can subsequently be tested and (hopefully) confirmed in the laboratory.


Phage Therapy is influenced by:

Phage therapy is influenced by:

Country : the epidemiological situation is different from country to country in terms of circulating bacteria and bacteriophages. Example: lytic phages from Italy may be no active on the same bacteria (genus and species) isolated from another country and vice versa.
Temporariness
Mutation rate
Phenotypical delay
Phage cocktail

My point of view

Tuesday 17 August 2010

D29 phage integrase, L5 phage integrase and Prophage integrase of M.ulcerans comparison

Hypotesis

"If phiMU01 and phiMU02 prophages were mycobacterium phages probably they have some common features with Phage integrase of L5
and D29 mycobacterium phages ".

If this hypotesis is true in that case I can hope against hope.

This analysis will reinforce my conviction about the presence in the soil , fresch water or in other sources of specific phages for Mycobacterium ulcerans. I am sure "nothing seek, nothing find".


By Artemis software I have extracted :

-
phiMU01 and phiMU02 prophage integrase sequences from Mycobacterium ulcerans genome.

>misc_feature misc_feature Prophage phiMU01 523696:542119 forward
CCTTGCCGATAGACGGTACCGGCGCGCCCTGACGGGA
CGCGAACGATCAAGAAGCTACCCGCGCCGGTGTCGCT
GGACGGCACTCTAATAACGTCGCGGCTCGCTGGCGTT
GGAATTCAG..........AATC



MUL 0529


>misc_feature misc_feature Prophage phiMU02 3582899:3606951 reverse

GTCAAGTGGTCGCAGGTTCAAATCCTGTCAGCCCGACCA
GAACGTTCTTACTCAAACCAGTGACCGAAAAGACACCGG
CCAAGGTGAGCGACTCCGTTCCGGTGGATCTAGGAGCC
CCTG......ACAT


MUL 3230






-
phage integrase sequences from L5 and D29 Mycobacterium phage genome .

L5p33


D29p32




L5p33 DNA/D29p32 Dna Dot plot





MUL 0529 DNA / MUL 3230 DNA Dot plot




MUL 3230 Protein / MUL 0529 Protein Dot plot




MUL 0529 DNA / L5p33 DNA Dot plot





MUL
0529 Protein / L5p33 Protein Dot plot




MUL 0529 Protein / D29p32 Protein Dot plot






MUL 3230 DNA / L5p33 DNA Dot plot





MUL
3230 Protein / L5p33 Protein Dot plot





Is this hypotesis true ? In that case I can hope against hope.

Yes !!!

DISTANCE



D29p32 and MUL 0529 alignment


L5p33 and MUL 0529 alignment





Integrase and genomes GC Skew