DNA repair enzyme MutS from E. colinunus-world.com
The machinery that copies DNA makes an error approximately every 10 million bases. That may not seem like much if you are a bacterium that only has 5 million bases in its genome, but if you replicate once per hour, then on average half of your descendants have a mutation, and this number rapidly approaches 100% as you near the end of the day.It stands to reason, then, that E coli needs something more than just proofreading polymerases to keep its DNA from mutating, and that is where the mismatch repair protein MutS fits in.MutS clamps on to the mismatched base pairing and recruits other proteins that perform the repair.Read more here http://en.wikipedia.org/wiki/MutS-1  DNA repair enzyme MutS from E. coli  by destroyer2012  is licensed under the Creative Commons - Attribution  license. http://en.wikipedia.org/wiki/MutS-1 http://www.thingiverse.com/thing:126712 http://www.thingiverse.com/destroyer2012 http://creativecommons.org/licenses/by/3.0/
I would like to create this using a 3d printer. Dental rubber bands for braces act as tendons and hold the hand in a rigid state. When strings are pulled corresponding joints will fold, making the fingers open and close. I plan to have servo motors pull and release the strings.
BodyParts3D Lumbar Vertebrae3dupndown.com
Lumbar vertebrae, derived from the excellent BodyParts3D database. Includes L1, L2, L3, L4, and L5. Sliced in half along the mid-plane so they can be printed easily and glued together.Credit: BodyParts3D, Copyright???? The Database Center for Life Science licensed by CC Attribution-Share Alike 2.1 Japan. Interactive database and hundreds more .OBJ source files can be found here:http://lifesciencedb.jp/bp3d/?lng=en.ZIP of .OBJ files: https://docs.google.com/open?id=0B_3DyBhHQQc2X2t5ZXNpbkZqNTAJournal article describing the BodyParts3D project:http://www.ncbi.nlm.nih.gov/pubmed/18835852 http://nar.oxfordjournals.org/content/37/suppl_1/D782.full-text-lowres.pdfMy post describing methods to isolate anatomical features and get them ready to print:http://craig.bonsignore.com/2012/10/07/open-3d-human-anatomy/I haven't printed this yet, but the overhang of the inferior articular process looks a bit nasty. Support may be required.Print both piecesGlueEnjoyShareMake more body parts, and tag them with "bodyparts3d"! (see links above)Repeat(.gcode files are included for reference only -- these were for an original Ultimaker with PLA)by Cbonsig, published Oct 7, 2012edited by dong min choi