2016-10-03.log

--- Log opened Mon Oct 03 00:00:11 2016
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kanzurebloop.06:30
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kanzure"Posttranslational mutagenesis: A chemical strategy for exploring protein side-chain diversity" http://science.sciencemag.org/content/early/2016/09/22/science.aag146507:08
kanzure"Posttranslational modification of proteins expands their structural and functional capabilities beyond those directly specified by the genetic code. However, the vast diversity of chemically-plausible (including unnatural but functionally relevant) side-chains is not readily accessible. We describe C (sp3)–C (sp3) bond-forming reactions on proteins under biocompatible conditions, which exploit unusual carbon free radical chemistry, ...07:08
kanzure... and use them to form Cβ–Cγ bonds with altered side chains. We demonstrate how these transformations enable a wide-diversity of natural, unnatural, posttranslationally-modified (methylated, glycosylated, phosphorylated, hydroxylated) and labeled (fluorinated, isotopically-labeled) side-chains to be added to a common, readily-accessible dehydroalanine precursor in a range of representative protein types and scaffolds. This ...07:09
kanzure... approach, outside of the rigid constraints of the ribosome and enzymatic processing, may be modified more generally for accessing diverse proteins."07:09
kanzure"Towards deep symbolic reinforcement learning" https://arxiv.org/abs/1609.0551807:10
kanzure.tw https://twitter.com/fchollet/status/77538859587180953607:11
yoleauxA reasonable candidate for replacing backprop in deep learning: ADMM (alternating direction method of multipliers). (@fchollet)07:11
kanzure"Capacity-approaching DNA storage" http://dnafountain.teamerlich.org/ http://biorxiv.org/content/early/2016/09/09/074237.107:12
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kanzure"The multilayer connectome of Caenorhabditis elegans" https://arxiv.org/abs/1608.0879307:14
kanzure"Accurate de novo prediction of protein contact map by ultra-deep learning model" http://biorxiv.org/content/early/2016/09/03/07323907:15
kanzurepaperfuge (yes already mentioned but whatever..) http://biorxiv.org/content/early/2016/08/30/072207 i guess i mentioned the foldscope not the paperfuge.07:17
kanzure"small tool for searching small guide DNA for CRISPR-Cas9 target sequence" https://github.com/hanyue36/sgs07:18
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juulybit: oh great! i've been traveling but will put up the individual talks soon09:04
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kanzurehttp://www.cs.virginia.edu/~robins/YouAndYourResearch.html10:26
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poppingtonichttp://www.openphilanthropy.org/dr-adam-marblestone-mit-synthetic-neurobiology-group-and-mit-media-lab-and-dr-eric-drexler-future11:54
yoleaux19 Sep 2016 15:22Z <kanzure> poppingtonic: see http://gnusha.org/logs/html/2016-09-19.log.html#t08:19-9311:54
poppingtonickanzure: good! it's been a while since I was here.11:56
poppingtonicThe OpenPhil link is a page linking to a pdf. Some good stuff about a recent workshop with US DOE people about atomically precise manufacturing and an exploratory project to build a 1st generation molecular 3D printer.11:59
fennis that what they're calling it these days?12:01
poppingtonicwhat, atomically precise manufacturing? Drexler has been calling it that for years now, I think...and the interview is with him and Adam Marblestone..12:03
fenn"molecular 3D printer" is a phrase i hadn't heard yet12:04
poppingtonicmatter compiler?12:05
kanzurewhat was wrong with atomically precise manufacturing12:07
poppingtonicthe name, or the entire idea?12:08
kanzurethe name!12:08
poppingtonicI don't see anything wrong with it, it's more precise. Heh.12:08
kanzurei should probably go ask adam to pitch dna synthesis for molecular manufacturing reasons. not sure if he is doing that already.12:09
kanzurehttp://www.openphilanthropy.org/sites/default/files/Eric_Drexler_Adam_Marblestone_09-01-16_%28public%29.pdf12:09
poppingtonickanzure: I remember reading about that somewhere, not sure whether it was Marblestone or Church who wrote it. I'll look in Regenesis again and see..12:11
kanzure" spiroligomer bricks"12:11
poppingtonic"A molecular 3D printer made entirely out of self-asssembled nanoscale components would be massively parallel by design. [...] If such printers could work with blocks on a 1nm scale, they would compete with the best self-assembly methods."12:14
poppingtonic"despite advances in DNA origami and other areas, there is a considerable probability of failure in the approach pursued by each lab, due to the inherent difficulty of biomolecular research"12:17
poppingtonickanzure: re DNA synthesis, I think they both are. See the estimates on funding costs spread over 3-6 large, successful labs.12:18
kanzureok emailed adam 588df395c9a74880b6e7433d8d31ca030392b9d90ab5445293462f4e871b138712:21
poppingtonickanzure: from Regenesis pp115: "The synthetic minimal cell would enable the production of materials too large or otherwise incompatible with the more elaborate functioning systems of a complex cell. It also represents our best shot at a general nanotech assembler, the dream of Eric Drexler and many nanotechnology enthusiasts since he first described it in his 1986 book Engines of Creation."12:28
kanzureweird that they want an entire cell for that.12:29
kanzurein vitro protein synthesis already works yo12:29
poppingtonicI think the goal with the cell is to figure out (really "grok") the minimal set of proteins that make a cell "alive", for some sufficient definition of the term given in the book.12:30
kanzurefor molecular manufacturing, we can do many tihngs without an entire cell--- for example, there was a paper from a few years ago that showed how to make arbitrary 3d polyhedral objects using dna origami.12:30
kanzurewell, not completely arbitrary, there is a size constraint on the low end i think, and probably an upper size constraint on the high end. and also not all possible shapes can be made by polyhedrons.12:31
kanzurepoppingtonic: about making biology more like programming http://gnusha.org/logs/html/2016-09-08.log.html#t19:11-11112:33
poppingtonicI see. Not end-user modifiable. DRM'd up the wazoo.12:36
poppingtonicThat's a good thread, kanzure. Thanks.12:42
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kanzurepoppingtonic: yep sure.12:48
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kanzureschedule is up https://scalingbitcoin.org/event/milan2016#schedule14:36
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kanzure"Friday is the last day for registration for the Igem Giant Jamboree"15:19
kanzuresynbiobeta conference is tomorrow http://synbiobeta.com/conferences/synbiobeta-sf-2016/15:20
kanzure"on Saturday Seattle carries out a sheep brain dissection for beginning neuro-biologists"15:23
kanzure( https://www.meetup.com/HiveBio-diyBio-Seattle-Science-Meetup/events/233371985/ )15:23
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kanzure"The future of whole-cell modeling" https://covert.stanford.edu/publicationpdfs/DMacklin2014.pdf18:58
kanzure"A whole-cell computational model predicts phenotype from genotype" http://www.cell.com/cell/fulltext/S0092-8674(12)00776-318:58
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kanzurehmph21:13
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--- Log closed Tue Oct 04 00:00:12 2016

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