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All posts created by debbie

| posted 23 Mar, 2023 15:58
Veronique,
I believe that this issue is outside of DNA Master's reach. Something it wanted to contact couldn't. (or something like that.)
Regardless, I would restart my computer and then bet my nickel that it will disappear.
debbie
Posted in: DNA MasterDNA Master errors
| posted 19 Mar, 2023 23:05
Using the phamerator numbers I would likely not call either 39 or 40.

34296 - 34397 has enough (though slight) coding potential for me to consider calling this one. No Other FF has this sequence.

Note that this genome has 2 tRNAs, make sure there is not any overlap between genes/tRNAs.
Posted in: Cluster FF Annotation TipsTricky gaps
| posted 18 Mar, 2023 00:05
Excellent! Yay!
Posted in: DNA MasterDNA master parse error (and others)
| posted 17 Mar, 2023 23:59
Hi!
I could call 41673-41810. There is a nib of coding potential and that if fits with 4bp overlaps at both ends is compelling.

I think the coding potential is there for 41974-42225.

However, I am not sure about the last one 42293-42394. I don't think that i would call it.

debbie
Posted in: Cluster F Annotation Tips4 bp overlaps
| posted 17 Mar, 2023 16:23
Amanda,
This sounds like a connection is busted between the windows tools DNA Master uses and DNA Master.
You have to get them back. The simplest way forward may be to totally uninstall and then reinstall it on your machine.
If you haven't turned your machine off and then back on, that might be a first try.
debbie
Posted in: DNA MasterDNA master parse error (and others)
| posted 17 Mar, 2023 14:51
Nikki,
That is not entirely correct. Some folks capture all of the slip in one region, where it is to be slipped between the 2 (meaning the annotation of the shared nucleotide occurs in the middle). Because the slippage happens around a lot of glycines, the sequence can look right but be actually annotated incorrectly.

In this particular case, there are 2 predicted overlapping slippery sequences. The run of Gs and the canonical XXXYYYZ. In this particular case, I can't tell which one is used without some bench work.

debbie
Edited 17 Mar, 2023 16:07
Posted in: Frameshifts and IntronsFrameshift in DY phage Tarzan (and others)
| posted 17 Mar, 2023 01:00
Nikki,
Hi. Both choices produce the same protein sequence and unless the experiment is done to label the amino acids in the sequence, I don't think one is better than the other. There is no GN or GK decision, it is whether the second G in the final sequence of AGGK is in the first frame or the second. Does that make sense?
debbie
Posted in: Frameshifts and IntronsFrameshift in DY phage Tarzan (and others)
| posted 16 Mar, 2023 23:42
Ellen,
Hi. There is no data that supports "secreted protein". I am not sure where that came from, but is no longer in use. when you run this protein through DeepTMHMM, it does have a single transmembrane domain, so "membrane protein" can be assigned to this protein.

Note that when you look at pham data on phagesDB, you don't find "secreted protein" as a function call across the pham but the NCBI blast hits that do call it are from RefSeqs. So it appears that the RefSeq's at NCBI are not as current. Supporting data to a call will be present outside of blast if it is a true call (most of the time)>

debbie
Posted in: Annotationsecreted protein?
| posted 14 Mar, 2023 19:33
Hi Ellen,
I have attached a screen shot of my HHPRed.
The significant hits are
1. e-27/ probability score of 99.9 to gp15 of D29 (sometimes there are hits to gp# that do not connect to a phage, but in this case, hitting the prototypic phage D29, I would recommend paying attention to it). gp15 of D29 is its capsid maturation protease (CMP).
Additionally, i can be skeptical of any minor capsid hits, because many times it is hitting some component that i know is structural but can't tell if it is heads or tails. BUT, having said that, hitting minor capsid doesn't negate it being the CMP.
Any hits to MuF are problematic. It does not appear to be structural (can't be found in come cryo EM that Simon White has done) and appears to always be part of something else. But never really hits the something else. But maybe MuF is Mu's version of the capsid assembly protein? Is there an instance of both MuF and CMP are present?

I would easily call this gene capsid maturation protease.

debbie
Posted in: Annotationcapsid maturation protease or hypothetical protein (MuF-like minor capsid protein)
| posted 13 Mar, 2023 18:34
I looked at this too and I agree with Nikki. there is not strong evidence that there is a gene here at all, but I'm inclined to call the gene with the 4 bp overlap. Interesting that in some genomes the sequence, though not identical, does have coding potential in that frame. It is a clear demonstration of how the math of coding potential prediction breaks down with small genes.
debbie
Posted in: Cluster DJ Annotation TipsNo coding potential where others call a gene