Student Learning Outcomes (SLOS) KNOWLEDGE AND LEARNING SKILLS USE OF KNOWLEDGE AND LEARNING SKILLS - how to use Annhyb to save and manage sequences - how to use BLAST to compare sequences - how to get exon map of a cdna - how to identify specific domains within a cdna INDEPENDENT JUDGEMENT COMMUNICATION SKILLS
Preliminary study of NRG1 sequences you had to compare rat NRG1 type III sequences to identify alpha and beta domains, the EGF-like domain and domains 1 and 3 Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale 805 869 805 884 exon α? exon β + exon 1?
Only for teaching purposes - not for reproduction or sale 805 869 805 884 exon α = 806-868 on sequence AF194439 exon β + exon 1 = 806-883 on sequence AF194438
exon α = 806-868 on sequence AF194439
859 859 exon α = 806-868 on sequence AF194439 exon β + exon 1 = 806-883 on sequence AF194438 exon β? exon 1? Exon3? Only for teaching purposes - not for reproduction or sale
859 859 exon α = 806-868 on sequence AF194439 exon β + exon 1 = 806-883 on sequence AF194438 exon β = 806-859 on sequences AF194438 and DQ176766.1 exon 1 = 860-883 on sequence AF194438 Exon3 =860-891/894 on sequence DQ176766.1 Only for teaching purposes - not for reproduction or sale
exon β = 806-859 on sequences AF194438
exon 1 = 860-883 on sequence AF194438
Exon3 =860-891/894 on sequence DQ176766.1
Preliminary study of NRG1 sequences you had to compare rat NRG1 type III sequences to identify alpha and beta domains and the EGF-like domain where would you put primer pairs to identify α and β isoforms in your tissue samples? Only for teaching purposes - not for reproduction or sale
rat type III NRG1 sequences Only for teaching purposes - not for reproduction or sale
Where do we have to design primers to identify different isoforms? If you want to identify α and β isoforms, where can you put primers for RT-PCR? Only for teaching purposes - not for reproduction or sale
PCR & primer orientation - sense primer - antisense primer - Annhyb - primer secondary structure Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Please design primers to amplify this region. sense primer =? antisense primer =? Only for teaching purposes - not for reproduction or sale
sense primer = 5 -catccgtta-3 antisense primer = 5 -tacgatcgg-3 Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
If I ask you to amplify the cdna starting from ATG, where do you put the sense primer?
If I ask you to amplify the cdna starting from ATG, you have to identify the first ATG (the start codon ) of the coding sequence!
PCR amplification 1 - to clone the full length cdna to express the protein 2 - to verify the expression of a gene
1 where do you put primers if you want to amplify & clone the full length cdna to express the corresponding full length protein? Genomic Gene DNA endogeno Promoter cdna ATG STOP Exon 1 Intron1 Exon 2,3... 1 2 3 4 ATG STOP mrna 1 1 2 3 4 5 polia RT (reverse transcriptase) Only for teaching purposes - not for reproduction or sale
1 where do you put primers if you want to amplify & clone the full length cdna to express the corresponding full length protein? Genomic Gene DNA endogeno Promoter cdna ATG STOP Exon 1 Intron1 Exon 2,3... 1 2 3 4 ATG STOP mrna 1 1 2 3 4 5 polia RT (reverse transcriptase) ATG STOP PCR ATG STOP PCR product Only for teaching purposes - not for reproduction or sale
2 where do you put primers if you want to verify & quantify the expression of a gene? Genomic Gene DNA endogeno Promoter cdna ATG STOP Exon 1 Intron1 Exon 2,3... 1 2 3 4 ATG STOP mrna 1 1 2 3 4 5 polia RT (reverse transcriptase) Only for teaching purposes - not for reproduction or sale
2 where do you put primers if you want to verify & quantify the expression of a gene? Genomic Gene DNA endogeno Promoter cdna ATG STOP Exon1 Intron1 Exon 2,3... 1 2 3 4 mrna 1 1 2 3 4 5 6 7... polia RT (reverse transcriptase) Only for teaching purposes - not for reproduction or sale
sometime you have genomic DNA contamination. How can you amplify only cdna and not contaminant genomic DNA? Genomic DNA Gene endogeno mrna Promoter cdna ATG STOP Exon1 Intron1 Exon 2,3... 1 2 3 4 PCR 1 1 2 3 PCR 4 5 6 7... polia RT (reverse transcriptase) Only for teaching purposes - not for reproduction or sale
1- one strategy could be to design primers on different exons separated by a big intron ( 1000 bp) Genomic DNA Promoter mrna cdna Exon1 Exons 2,3... Intron1 1 2 3 4 RNA polimerase RNA 1 2 3 4 1 2 3 PCR RNA splicing 4 5 6 7... polia RT (reverse transcriptase) Only for teaching purposes - not for reproduction or sale
which strategy could you use if intron is too small (<1000bp)? Genomic DNA Promoter mrna 1 2 3 4 5 6 7... cdna Exon1 Exons 2,3... Intron1 1 2 3 4 RNA polimerase RNA 1 2 3 4 RNA splicing polia RT (reverse transcriptase) Only for teaching purposes - not for reproduction or sale
2 - if introns are too small (< 1000 bp) a second strategy could be to design primers across two exons Genomic DNA Promoter mrna cdna Exon1 Exons 2,3... Intron1 1 2 3 4 RNA polimerase RNA 1 2 3 4 1 2 3 RNA splicing 4 5 6 7... PCR polia RT (reverse transcriptase) Only for teaching purposes - not for reproduction or sale
How to use Annhyb to design primers Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
? Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
primer sense (create oligo with the clipboard sequence) primer antisense (DO NOT create oligo with the clipboard sequence, you have to copy and paste the sequence here!! ) Pay attention! The sequence in Annhyb is single strand!
Pay attention! The sequence in Annhyb (and in ncbi) is single strand!
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Only for teaching purposes - not for reproduction or sale
Design primer pairs to quantify expression of NRG1 α and β isoforms in your samples: primer pairs must meet the following criteria: 1- to have similar Tm (about 60 C according to Allawi) 2- to finish with G or C 3- to have a content of G and C 50% 4- not to form secondary structures (use Annhyb: tools -> test for dimers and hairpin loops). Test each primer against himself and against the other primer: you want to have 4 consecutive pairings: if you have 5 you have to design a new primer Only for teaching purposes - not for reproduction or sale
Summary for today you have already identified the exons corresponding to rat NRG1 EGF-like domain, α and β, 1 and 3 on rat genomic DNA compare EGF-like domain, α and β with the genomic exon sequences to identify the corresponding exons and to measure the intron length calculate the intron length design primer for NRG1 α and β amplification (using criteria of the previous slide) calculate: the amplicon length prepare a slide or a doc file containing: - the sequences including EGF-like-α and EGF-like β with highlighted in yellow se position of sense and antisense primers - the sequences of the primers sense and antisense that you want to buy written from the 5 position - the intron length - the amplicon length - submit the file to moodle.
I exon green, II exon pink position of primer sense position of primer antisense Then, you have to write the primer sequence to order them to a company: Primer sense: 5 -...-3 Primer antisense: 5 -...-3 Amplicon length: Intron length:
Student Learning Outcomes (SLOS) KNOWLEDGE AND LEARNING SKILLS USE OF KNOWLEDGE AND LEARNING SKILLS - how to use Annhyb to save and manage sequences - how to use Annhyb to prepare primers for PCR - how to design and order primers for PCR - how to use BLAST to compare sequences - how to get exon map of a cdna - how to identify specific domains within a cdna INDEPENDENT JUDGEMENT COMMUNICATION SKILLS