[ccp4bb] ssDNA

2015-07-02 Thread Reza Khayat
Hi, Sorry for the non-crystallography question, does anyone know how to produce milligram quantities of single stranded DNA? Thanks. Best wishes, Reza Reza Khayat, PhD Assistant Professor Department of Chemistry City College of New York 85 Saint Nicholas Terrace, CDI 12318 New York, NY 10031 ht

Re: [ccp4bb] ssDNA

2015-07-02 Thread Antony Oliver
1) Commercially made oligonucleotides 2) M13 rolling circle replication (how people used to make ssDNA for sanger sequencing). ——— Dr Antony W Oliver Senior Research Fellow CR-UK DNA Repair Enzymes Group Genome Damage and Stability Centre Science Park Road University of Sussex Fal

[ccp4bb] ssDNA self-aneal

2011-03-17 Thread dengzq1987
Dear all, Recently,i purchase Oligonucleotide from company.the sequence is TTGCGTAC GCAC GTACGC .i want to perform self-annealing process to form the following second structure . 5' TTGCGTACGC ||| |||] 3' CGCATGCA i hope that most of

Re: [ccp4bb] ssDNA self-aneal

2011-03-17 Thread Tim Gruene
Just like you would for PCR: - Dissolve the oligonucleotide in water - Heat it to above meltung temperature, pick 95degree C if you want to be on the save side - leave it to cool down. Is this what you are looking for? Tim On Thu, Mar 17, 2011 at 07:23:07PM +0800, dengzq1987 wrote: > Dear all,

Re: [ccp4bb] ssDNA self-aneal

2011-03-17 Thread Kevin Jude
I would bring up the DNA in TM buffer (10 mM Tris, 5 mM MgCl2) or similar and anneal under dilute conditions to favor hairpin formation over dsDNA. Fast cooling will also favor hairpin formation, so you may try heating to 95° and then cooling on ice, or using a short gradient on a thermocycler. Yo

Re: [ccp4bb] ssDNA self-aneal

2011-03-17 Thread Bart Hazes
Has anyone looked at the kinetics of DNA annealing. Especially for such short fragments I expect hairpin formation times to be on the order of pico to nano seconds. Of course it doesn't hurt to slow-cool but I wouldn't be too paranoid about it. Moreover, in this particul