PhiX174 resistance E. coli strain?

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PhiX174 resistance E. coli strain?

by Yoram Gerchman :: Rate this Message:

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Greetings all
I am looking for PhiX174 resistance E. coli strain. Does anyone know of such
strain?

Many thanks

Yoram



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Parent Message unknown Re: PhiX174 resistance E. coli strain?

by Duncan Clark :: Rate this Message:

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Historians believe that in newspost
<mailman.62.1255029029.1133.methods@...> on Thu, 8 Oct 2009,
Yoram Gerchman <gerchman@...> penned the following
literary masterpiece:
>I am looking for PhiX174 resistance E. coli strain. Does anyone know of such
>strain?

The original hosts for phiX174 production were E.coli C derivatives. No
idea if it goes into E.coli B or K12 strains. If it's genome has an EcoB
or EcoK site in the sequence then that would answer the question.

I think a Pubmed search is the best way to go.

Duncan
--
I love deadlines. I especially like the whooshing noise they make as
they go flying by.

Duncan Clark
GeneSys Ltd.
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Parent Message unknown Re: Re: PhiX174 resistance E. coli strain?

by Yoram Gerchman :: Rate this Message:

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Thanks Dunken. Could you kindly elaborate on the EcoB/EcoK issue? Since the
lysis system (E protein) seem to work in K12/coli B whay would not the phage
propagate in them?
Many thanks
Yoram

> Date: Mon, 12 Oct 2009 15:24:57 +0100
> From: Duncan Clark <blackhole@...>
> Subject: Re: PhiX174 resistance E. coli strain?
>
> Historians believe that in newspost
> <mailman.62.1255029029.1133.methods@...> on Thu, 8 Oct 2009,
> Yoram Gerchman <gerchman@...> penned the following
> literary masterpiece:
> >I am looking for PhiX174 resistance E. coli strain. Does anyone know of such
> >strain?
>
> The original hosts for phiX174 production were E.coli C derivatives. No
> idea if it goes into E.coli B or K12 strains. If it's genome has an EcoB
> or EcoK site in the sequence then that would answer the question.
>
> I think a Pubmed search is the best way to go.
>
> Duncan
> --
> I love deadlines. I especially like the whooshing noise they make as
> they go flying by.
>
> Duncan Clark
> GeneSys Ltd.


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Parent Message unknown Re: PhiX174 resistance E. coli strain?

by Duncan Clark :: Rate this Message:

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Historians believe that in newspost
<mailman.88.1255374269.1133.methods@...> on Mon, 12 Oct 2009,
Yoram Gerchman <gerchman@...> penned the following
literary masterpiece:
>So EcoB and EcoK are
>Type I restriction enzymes and will degrade the phiX174 genome

Only if the genome contains a recognition site for those enzymes. If it
doesn't I can't see offhand (bar any particular gene requirement)  why
it shouldn't infect a B or K12 strain. I wonder if the very first papers
on phiX174 show strain information with regards E.coli C, K12 and B.
Quite often that was one thing that was published, especially for say
T-odd or T-even phages. Bit more digging required I think :-)

Duncan
--
I love deadlines. I especially like the whooshing noise they make as
they go flying by.

Duncan Clark
GeneSys Ltd.
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Methods mailing list
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