April 12

Progress Report and Continued Research 4/10/19

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Progress Report and Continued Research 4/10/19

Rationale

The rationale behind today in lab was to search the literature to have us submit a progress report so that we and our coaches could see where we are at and what still needs to be done. In addition, when we were done with our progress report, we continued working on sequencing and protein folding in order to collect the necessary data.

Tools/Procedure

  1. Progress report was submitted
  2. Clustal Omega was used to compare TMPs between individual Arthrobacter clusters and between different tail morphologies
    1. Sipho and myo family groups were compared
  3. MEME Motif was used to find repeating motifs in the TMPs of sipho and myo phage

Results

The results above were generated using the MEME software to find motifs, areas of similar sequences across several different sequences belonging to both sipho and myo phage. As can be seen in the motif location image, there are two motifs (shown in blue and in green) that are present in every TMP tested, creating intriguing information to look into.

Conclusion

While there is not enough data to make extensive conclusions yet, our data so far suggests that TMPs are highly conserved (based on amino acid sequences) in each cluster, and less conserved in the tail families. The amino acid sequences do however suggest certain structural elements being conserved among tail families even if the amino acid sequence is not strictly conserved. Also, protein folding between myo and sipho phage showed significant differences in the protein structure, which we will need to examine further. Finally the results that show there are certain motifs found in every TMP seem to suggest areas of conservation.

Future Plans

In the future, we will continue to look for similarities and difference in the amino acid while continuing our folding of proteins to try to figure out if there are key conserved regions in TMPs.

April 12

Literature Search Report 4/8/19

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Literature Search Report 4/8/19

Rationale

The rationale behind today in lab was to search the literature to help us better understand what we are researching and to see if we can find valuable insights. In addition, when we were done with our literature search, we continued working on sequencing and protein folding in order to collect the necessary data.

Tools/Procedure

  1. Five sources of primary literature were cited and submitted
  2. Clustal Omega was used to compare TMPs between individual Arthrobacter clusters and between different tail morphologies
    1. AK, AL, AM, and all F clusters were compared

Results

The clustal omega results shown above help illustrate the results that were found during this lab period. While there is an incredible similarity between TMPs of the same cluster, even TMPs from the same tail morphology, but different clusters show fairly significant differences in the amino acid sequences. However, there does seem to be more similarity between the types of amino acids (as seen by the color coding) suggesting that even if DNA or amino acid sequences are not highly conserved, the structure is more likely to be conserved.

Conclusion

While there is not enough data to make extensive conclusions yet, our data so far suggests that TMPs are highly conserved (based on amino acid sequences) in each cluster, and less conserved in the tail families. The amino acid sequences do however suggest certain structural elements being conserved even if the amino acid sequence is not strictly conserved.

Future Plans

In the future, we will continue to look for similarities and difference in the amino acid while continuing our folding of proteins to try to figure out if there are key conserved regions in TMPs.

April 12

4/10 Lab Journal

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Purpose: Continue Individual Research

Procedure:

  • Searched for Phages containing an NMT in their genome to compare to the NMT found in NapoleonB and other AM cluster phages
  • Found three AU cluster phages for future research
  • Found three EG cluster phages with NMT genes
  • Added all the fasta files for the NMT genes from the new phages, AM cluster, and bacteria to a splitstree diagram
  • Fought splitstree for almost a half hour to get it to work
  • Eventually manipulated the program to do its job
  • Found that with the present data we couldn’t put together a map to truly represent the genealogy of the gene

Results: Found that the splitstree graph will be harder to create than previously imagined. Will need more samples.

Future Plans: Continue finding more NMT fasta files to make into a coherent phylogenetic tree

April 11

Continue Individual Research

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03/27/19

Rationale:

to learn to conduct individual research, from the process of making a research question, to designing the methods and concluding from the acquired results.

Procedure:

  1. The individual research has now begun
  2. the group members have started finding the start codons for their assigned proteins using phages db for the fasta file and dna master for the sequence
  3. The grouped worked until the end of lab.

Results

so far. no real results. a lot of  the data collection has been performed.

Conclusion

this research will require a great deal of data collection as there are a little more than 200 sequenced arthrobacter phages. enough data can be collected for the research in the given time.

Future steps

do more research, look into primary literature and find more tools that can be used.

April 5

April 3, 2019

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Purpose: Continue research into NMT

Procedure:

  • Found Fasta AA files for all 14 AM phages
  • Isolated NMT gene in all of them
  • Also found a phage from very different cluster with NMT to compare
  • Submitted files to RaptorX for analysis
  • Got a splitting headache and couldn’t think
  • Packed up and limped home

 

Results: We now have the protein models for 14 potential and 1 confirmed NMT

 

Future Steps: Continue investigating the protein structure and attempt to confirm the function of gene 93

 

April 5

Monday, April 1

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Purpose: Prepare for poster presentation

Procedure:

  • Critique other groups practicing their presentations for URSA
  • Asked TAs clarifying questions for the presentation
  • Practiced with Justin
  • Refined our specific areas of focus

Results: Though nervous, I am now more prepared to present.

Future Steps: Present, and continue with individual projects

April 5

4-3-19 — Independent Research

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Independent Research

Date: 4-3-19

  • Rationale
    • The rational for this lab is to gather data to use for our independent research project.
  • Procedure
    1. A Microsoft excel document was created and shared with independent research project groups.
    2. PhagesDB and DNAMaster were used in order to gather information about the start codons used by phages that infect Arthrobacter.
  • Results
    • Above is a screenshot of  Mudcat, an arthrobacter phage in the AM cluster, and its start codon choices for various genes.
  • Future Plans
    • The next step is to continue gathering this data before attempting to further subcluster phages based on start codon preference.
April 5

presentation practice

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04/01/19

Rationale:

to prepare for presentation of poster board at URSA.

Procedure:

  1. each presentation group presented the poster board.
  2. the presentation was then critiqued and improvements were suggested

Results

learned about flaws in the presentation and acquired a better understanding of how the research should be presented

 

Conclusion

with the help of these critiques and improvements, the class is now ready to professionally present the poster board

Future steps

present poster board during assigned time

April 5

Poster Presentation Practice 4/1/19

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Poster Presentation Practice 4/1/19

Rationale

The rationale behind these procedures is to ensure that each member of the class can present the poster in a coherent way and to ensure that all of us know what information is on the poster and being presented. We also practiced answering questions so that we can better communicate our poster.

Tools/Procedure

  1. Presentation groups were picked based on poster signup times
  2. Each group gave a presentation and was critiqued
  3. General points of confusion were clarified and poster presentation etiquette was explained

Results

There is no picture of what we did today in lab because it was just practice, but it helped us learn what to say and how to say it for scholar’s day.

Conclusion

There is not much that can be said as a conclusion as this was a practice day, but I can say that I feel more confident in my ability to present during my timeslot on Wednesday.

Future Plans

In the future, we will use what we learned to present during Scholar’s Week.

April 5

Comparing Base Pair Repeats 4/3/2019

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Title: Comparing Base Pair Repeats

Date: 3 April 2019

Rationale:  To begin the major research project, the group will be examining a 51-base pair repeated sequence in NapoleonB’s genome.

Tools: 

  • DNA Master
  • Gepard Alignment
  • PhagesDB
  • NCBI BLASTn

Procedure: The 51 bp sequence was BLAST’ed and the results compared using a phamerator map and DNA Master annotated FastA files to investigate the nature of the repeated sequence.

Results/Observations: It was observed that the 51 bp sequence repeated around 25,500 base pairs in the AM cluster after an NKF gene. However, the repeat was found after a minor tail protein in NapoleonB.

Conclusions/Next Steps: The sequence will continually be investigated to find if any more evidence can be found (perhaps in the predicted protein structure or conserved domain) to find out if the sequence has any meaning or if the NKF call can be reversed.