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JustinA posted in Plaques appear on spot test, don't appear in titer
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Viknesh Sivanathan posted in Plaques appear on spot test, don't appear in titer
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All posts created by cdshaffer
Link to this post | posted 19 Jul, 2016 14:24 | |
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Installation of Starterator Beta version Updates to Starterator are now available. This is currently a beta version that needs further testing prior to general release. The beta version has updates which have solved some of the issues which cause starterator to crash. Please post any problems with installation or subsequent use of the beta or alpha versions of this software to this discussion. Also, if you find new phages that crash this version of starterator, please try the solutions suggested under the topic "Read First: Common Starterator Troubleshooting" of this forum. If those fail to solve the problem, please report the name of the phage under the topic "phage that crash starterator". It is only through reports like these that bugs can be found and squashed. This beta version has many bugfixes and improved graphics. However, to be safe it is recommended that you install the program in the SEAFaculty account. This will keep the original release version available in the SEAStudent account as a back-up should the beta version fail. Here are the instructions for installing and using the beta version of Starterator. Once installed there should be an icon on the Desktop to run Starterator. The basic instructions for installation of the beta version are nearly identical to installation of the initial release version of Starterator. Download and follow the instructions with the following exceptions: http://phagesdb.org/media/docs/Starterator_installation_2015.pdf Change step 1 from: 1. Download the script installStarterator.sh from: http://phamerator.webfactional.com/installStarterator.sh to: 1. Download the script installBetaStarterator.sh from: https://wustl.box.com/v/installBetaStarterator Change step 5 from: 5. After navigating to this folder, run the script by typing, in Terminal:
to: 5. After navigating to this folder, run the script by typing, in Terminal: If you want to have even more updates you can install the alpha version. The instructions are the same except you should download and run installAlphaStarterator.sh instead. It can be found here:https://wustl.box.com/v/installAlphaStarterator |
Link to this post | posted 16 May, 2016 15:18 | |
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in phamerator select "Phages" in left column, then select the phage you want. Then in the magic appearing menu at the top select File -> Export Proteins (fasta) save the file, it is a text based multi-fasta file which you can open with any text editor to view and load into GEPARD for dotplot. You can also get all proteins sequences for any phage in GenBank: go to genbank record (easy from phagesdb phage page), in upper right corner click "Send", then select Coding sequences, then pick if you want the sequences as nucleotide or amino acids. The downloaded file will also contain all the gene sequences as a text file. Very similar to the file from phamerator but with a lot more info in the header line for each gene which can either be useful if you need any of that info or just in the way if you don't |
Link to this post | posted 27 Apr, 2016 16:52 | |
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Wow! There were three genes in Kerberos that crashed starterator. These are all issues with protein names that is a known incompatability between Starterator and the phamerator database which needs work. Hopefully this will get addressed this summer. In the mean time I did get a starterator report of all the genes that did not crash (i.e. report is missing the three genes that crash but the rest are there.) I suggest for notes that you just put NA for the starterator comment for those three genes. You can download the complete pdf using this link. |
Link to this post | posted 19 Apr, 2016 14:05 | |
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Good news, my run worked. Link to full report. |
Link to this post | posted 06 Apr, 2016 15:34 | |
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Welcome to Unix! The problem is likely one of two issues. The most common is that you have a folder in the path with a space in the name. This can be any folder in the hierarchy starting with the very top all the way to the edit_dir. If you are using the SEA virtual machine this folder path will start like thie: /home/seastudent… and then proceed with each folder down to edit_dir. If you have any spaces in the names of any of those folders Consed will fail to find the files. This is why folder names so often have underscores (i.e. edit_dir not "edit dir"![]() The second most common issue is that the entries in the .fof file are not exactly correct or were made with the wrong text encoding. Check the .fof file paying particular attention to case. Unix is case sensitive, so File.ab1 is not the same as file.ab1. Finally, if you made the .fof file in a text editor that uses either mac or dos encoding it can be unreadable by Consed. Consed requires unix encoding. Here is the protocol I use with my students: 1. create a new folder and put all the sequences files in that folder 2. cd to that folder in terminal 3. create the .fof file with the following command in terminal:
4. you will now see another file in the folder with the reads called "reads.fof" This reads.fof is unix encoded text file and is readable by Consed, also the computer is much better about avoiding typos. The user should open the reads.fof with a text editor and double check that the list of files looks good. Now proceed with step two in Dan's protocol and move the .ab1 files into the chromat_dir and the reads.fof file into the edit_dir. The above covers about 90% of the 512 errors, if neither helps you, post a followup. |
Link to this post | posted 05 Apr, 2016 18:12 | |
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OK, thanks for that phage, it revealed an error in my code for finding these end spanning genes. I finally got starterator to complete a run with more improvements to the code. You can get the report here. the end spanning gene is not in the report, you will just want to put NA for the starterator notes. |
Link to this post | posted 05 Apr, 2016 17:14 | |
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According to the phamerator map, the wrap around gene is pham 9781 I cannot find any proteins in pham 9872 so I am going to guess you have a typo when you put 9782. If that is not the case let me know, I will chase down this discrepancy (could be an issue with a database and be causing the crash). Proceeding with the analysis based on the typo assumption, I can confirm that Tonenili crashes for me on the wrap around gene. I am going to run the version of the program which should skip that gene. These runs take a while I will post again when I have results. |
Link to this post | posted 04 Apr, 2016 21:49 | |
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Tonenili is a C1 phage, I bet there is a wrap around gene which is causing the crash. I have a version of starterator which tries to recognize this situation and just skip the analysis for that gene. Analysis is running now. I will try running on that version of starterator and see if we can avoid the crash. I will post an update one way or another as soon as I can |
Link to this post | posted 16 Mar, 2016 20:31 | |
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My own feeling is that coding potential is a good positive signal but a lousy negative signal. That is, seeing coding potential is a good sign for the presence of a gene but no coding potential is not good evidence for the absence of a gene. Coding potential is mostly about matching the nucleotide biases of the genes in the training set (be it self training on the phage itself or trained on a nearby host). Its always possible that a gene has evolved for some reason to specifically NOT match a particular bias. Say expression in a different host for example, or evolved for slow translation rates by using rare codons. In addition, I was trained that when in doubt it is always best to over annotate, not under annotate. The idea was it is better to have a false positive protein in a database than a false negative protein missing from the database. Its typically easier to find and reject an error than it is to find something that has been erroneously left out. Having said that, I will mention that the first point is my own opinion and I would not be surprised if other reasonable annotators disagree. Its really about data interpretation without guidance from any experiments so its all about opinion. As for the later point, I have found that policy to be much more a consensus in the community of human annotators that trained me and much less so in the community of people I have met that work with prokaryotes. So a reasonable counter argument is that it is better to match the standards of the community to which I would defer to others to voice an opinion. |
Link to this post | posted 12 Mar, 2016 02:47 | |
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TyrionL ran fine on my computer with the normal version of Starterator. This suggests that you may have a corrupted database or some other issue with your copy of the virtual machine. If you need to run a bunch more phage through Starterator you may want to re download the virtual disk and reinstall. If you just have a small number of other phage to do, just post them here I am happy to run them, the only issue really is the slow turn around time since I can get busy and not check the forum for days. You can download the full report for TyrionL from this link. |