Simulate a mass spectrometry analysis of your protein

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Reference no: EM132147872

Assignment

You have been allocated a cDNA accession number from the NCBI database (see table below on page 2). Your task is to design experimental strategies that will allow you to: clone the cDNA in different expression vectors using the Gibson assembly cloning method and show the protein products; knock out the function of your target using CRISPR; simulate a mass spectrometry analysis of your protein using a tryptic digestion and MASCOT analysis.

This assignment is designed to be completed throughout the semester, alongside the various lecture blocks. You should be able to perform each task immediately after you have learnt the appropriate techniques in lectures and practiced the analysis in workshops. If you leave it all until the final week of semester, you may find this assignment very, very difficult.

You must include the following in your report which must be submitted via LMS (word document).

1. A completed assignment cover page (provided)

2. A 150 word description of the function of your allocated protein

3. A 150 word explanation of your cloning strategy

4. The gene sequence of your allocated sequence with introns and exons clearly highlighted

5. Plasmid maps for both plasmids

6. You must use the following plasmids (details available online) for cloning: i). pEGFP-N1
ii). pH6HTN His6HaloTagT7

7. The translated sequence of your full length fusion proteins (using ORF Finder software) aligned with the coding sequence

8. The results of a BLAT IT analysis of your gene: On your gene sequence, highlight a region suitable to knock out using CRISPR and explain your choice.

9. Primers suitable to knock out the region you have chosen using CRISPR. Give forward primer sequence, reverse primer sequence and clearly indicate where they will bind on your gene sequence.

10. A theoretical tryptic digest of your tagged/fused protein (no missed cleavage sites)

11. Results from MASCOT to demonstrate that the tryptic peptides obtained from your untagged protein actually correspond to your allocated cDNA sequence (you need to show results from both fusion proteins)

Attachment:- Assignment.rar

Verified Expert

Gibsin assembly is a PCR based cloning strategy that use overlapping primers to cobine one ore more DNA fragments even plasmids together. cloning proteins into a expression vector with a tag allows for easy purification and identification. Determining mass of peptides released by trypsin digestion of proteins can aid in their identification along with presence of contaminants, if any. Identification of unique stretches of nucleotide in gene can help in gene knockout by CRISPR mediated non homologous end joining.

Reference no: EM132147872

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Reviews

inf2147872

11/24/2018 12:55:38 AM

Thanks. Nicely prepared work. It is clear and amazing work as per the requirements, all the points are covered. I would definitely be coming back with new assignments. Thank you so much for all the efforts you and your team has put into completing this assignment for me.

len2147872

10/23/2018 4:29:21 AM

Species of mRNA (ur answer is wrong it should be like Mus musculus) – forward primer sequence (check ur primer) reverse primer Tm (u must write oC) the symbol of temperature PCR annealing Temp (check) description of the function of your protein (write about your protein not general) Cloning methodology (write about your work or result in cover page, like the example) make 2 paragraphs for example

len2147872

10/23/2018 4:26:41 AM

you will work on file Integrated Assignment My Accession NumberNM_003577 I will upload last year sample+ feedbacks from the teacher so you can avoid doing the mistakes. Do not copy because it is diffrent Accession Number. Reference EMBO J format

len2147872

10/23/2018 4:25:43 AM

150 word explanation of your cloning strategy (marks deducted for poor use of language including spelling, grammar, punctuation and scientific terminology) 6 Gene sequence with introns and exons clearly highlighted (marks deducted for errors and poor presentation) 5 Plasmid maps for both plasmids (marks will be deducted for poor quality images & presentation) 4 Translated sequence of your full-length fusion protein (aligned with the cDNA sequence) 5 Result of a BLAT IT analysis: On your gene sequence, highlight a region suitable to knock out using CRISPR. Explain your choice. 8 Design primers suitable to knock out the region you have indicated using CRISPR (marks deducted for unclear presentation) 8 Theoretical tryptic digest of your tagged/fused proteins (peptides and masses, marks deducted for errors) 8 Results from MASCOT analysis of both tryptic digests (marks deducted for poor presentation and errors) 8 Total 100

len2147872

10/23/2018 4:25:38 AM

Marking scheme for this assignment – based on information requested on: Requirement Marks Completed cover page (excluding Primers for PCR & cloning) 12 pEGFP-N1 responses (on cover page, marks deducted for inaccuracies at each point) 12 pH6HTN His6HaloTagT7 responses (on cover page, marks deducted for inaccuracies at each point)) 12 150 word description of the function of your protein (marks deducted for poor use of language including spelling, grammar, punctuation and scientific terminology) 12

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