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All posts created by debbie

| posted 20 Jan, 2024 01:09
Others can give more specifics, but we have found TopCons to be confusing. It runs 5 (ish) different programs that contradict each other. DeepTMHMM has shown to be most reliable. results from DeepTmHmm are incorporated in phamerator.
debbie
Posted in: AnnotationMembrane proteins
| posted 19 Jan, 2024 18:11
Hi Johann,
The header of the fasta file for Franklin22 had a misspelling in it, so it read Frankin22. If you go to Franklin22's page, you can get the info that you need. The header has been corrected, but will not post until sometime later tonight or tomorrow.
best,
debbie
Posted in: Bioinformatic Tools and AnalysesPhage no available on phagesDB
| posted 03 Jan, 2024 12:23
The most current version of DNA Master is 5.23.6, build 2705, 24 October 2021.
Make sure preferences are set correctly, check #6, to make sure that the sftp settings are correct).
Then, in preferences, go to "Timed Events' and uncheck the first box. It does not need to check for updates again.
Posted in: Bioinformatic Tools and AnalysesDNA Master not updating
| posted 18 Dec, 2023 02:22
Hi Fred,
I would call 28 a holin and 29 a membrane protein.
debbie
Posted in: Cluster P Annotation TipsAssignment of gp28 as holin
| posted 10 Dec, 2023 01:58
The 2011 paper describes some repeat sequences in the right arm of The analyzed phages. In annotating phage Feyre, repeats were detected. See attached.
Posted in: Cluster K Annotation TipsRepeats in the right arm of some cluster K phage genomes
| posted 08 Dec, 2023 00:12
The transposase interrupts the N terminus of the immunity repressor (gp 43), and does not appear to be expressed (preliminary testing in the Hatfull lab). Therefore no immunity repressor gene has been called.
Some details are in the attached document.
Posted in: Cluster K Annotation TipsTransposase in phage Feyre
| posted 08 Dec, 2023 00:06
The immunity repressor in Feyre (gp 43) is interrupted by the insertion of the transposase. Preliminary testing shows that Feyre does not make a lysogen (and the immunity repressor is not working).
Posted in: Cluster K Annotation TipsBroken Repressor in one K5 phage (Feyre) due to a transposase
| posted 01 Dec, 2023 04:59
More papers about cluster K phages:
Mycobacteriophage ZoeJ: A broad host-range close relative of mycobacteriophage TM4
https://pubmed.ncbi.nlm.nih.gov/30948168/

A peptidoglycan hydrolase motif within the mycobacteriophage TM4 tape measure protein promotes efficient infection of stationary phase cells
https://pubmed.ncbi.nlm.nih.gov/17083467/

Mycobacteriophage TM4: genome structure and gene expression
https://pubmed.ncbi.nlm.nih.gov/10645443/

Genome Sequences of Mycobacteriophages Amgine, Amohnition, Bella96, Cain, DarthP, Hammy, Krueger, LastHope, Peanam, PhelpsODU, Phrank, SirPhilip, Slimphazie, and Unicorn
https://pubmed.ncbi.nlm.nih.gov/29217790/

Genome Sequences of Mycobacteriophages Findley, Hurricane, and TBond007.
https://pubmed.ncbi.nlm.nih.gov/29122862/

Engineered bacteriophages for treatment of a patient with a disseminated drug-resistant Mycobacterium abscessus
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6557439/
Edited 01 Dec, 2023 05:05
Posted in: Cluster K Annotation TipsCluster K papers
| posted 05 Oct, 2023 17:48
Hi all,
I chatted with Graham about this and here's what i have gleaned from the conversation. Temperature and pH can affect how well the calcium goes into the solution. Maybe try a different source of peptone or yeast extract to see if it improves.
best,
debbie
Posted in: Phage Discovery/IsolationPrecipitation of CaCl2 in PYCA top-agar
| posted 05 Oct, 2023 15:16
Eric,
Yep. Calcium does precipitate out of solution at high temps.
You can omit Ca in the autoclaved recipe and then add it back as you use the agar. You can also play with the concentrations. What you can't do is omit calcium. Many phages need calcium for adsorption, infection and stability.
Make sense?
debbie
Posted in: Phage Discovery/IsolationPrecipitation of CaCl2 in PYCA top-agar