An Optogenetic Platform for Real-Time, Single-Cell Interrogation of Stochastic Transcriptional Regulation.

Article added to library!

PubChase

'); var ntfc_preview = ''; $.post('/api/v1/get_notifications', function(r) { var ntfc_read_pending = 0; var ntfc_pending = 0; $.each(r.notifications.pending, function(index, ntfc_object) { ntfc_read_pending++; ntfc_pending++; if (ntfc_read_pending

' + ntfc_object.full_name +'' + ntfc_object.time + '

' + ntfc_object.description +'

'; }) if (ntfc_read_pending

' + ntfc_object.full_name +'' + ntfc_object.time + '

' + ntfc_object.description +'

'; }) $('.notification-block .dropdown-menu').html(ntfc_preview); $('.notification-block .dropdown-menu').append('

'); if (ntfc_pending > 0) { $('.notification-count').text(ntfc_pending).show(); } else { $('.notification-count').hide(); } } else { $('.notification-block .dropdown-menu').html(ntfc_preview); $('.notification-block .dropdown-menu').append('

'); if (ntfc_pending > 0) { $('.notification-count').text(ntfc_pending).show(); } else { $('.notification-count').hide(); } } if (ntfc_read_pending == 0) { $('.notification-block .dropdown-menu').html('

You don\'t have any notifications

'); $('.notification-count').hide(); } data = {'nid' : '', 'ntid' : 1}; $.post('/api/v1/notification_action', data, function(r) { if (r.request == 'OK') { $('.notification-count').hide(); } }); }, "json"); }); $('.search-save-box').on({ click : function(e) { e.preventDefault(); var search_attr = $(this).attr('rel').split(','); var p = search_attr[1]; var tf = search_attr[0]; window.location = '/search?tf='+tf+'&jc='+jc+'&keywords='+$(this).html()+'&s='+$('#sort_order').val()+'&p='+p; } }, '.search-name'); $( "#keywords_main, #keywords_mobile" ).focus(function(e) { show_saved_searches(e, $(this)); }); $(window).resize(function () { if ($('.search-save-box').is(':visible')) { if ($('#keywords_main').is(':visible')) var left_search_save = $('#keywords_main').offset().left; if ($('#keywords_mobile').is(':visible')) var left_search_save = $('#keywords_mobile').offset().left; $('.search-save-box').css('left',left_search_save); } }); $('.search-save-box').on({ click : function(e) { e.preventDefault(); delete_saved_search($(this)); } }, '.search-name-close'); $('.search-save-box, #keywords_main, #keywords_mobile').click(function(e) { e.stopPropagation(); }); $(document).click(function(e) { $('.search-save-box').hide(); }); $( "#keywords_main, #keywords_mobile" ).autocomplete({ source: function( request, response ) { // data contains the JSON object textStatus contains the status: success, error, etc $.post('/api/v1/searches', {'key' : request.term}, function(data, textStatus) { response(data); }, "json") }, select: function (event, ui) { var reportname = ui.item.value; var thelinks = '/search?tf='+$('#time_frame').val()+'&jc='+jc+'&keywords='+reportname+'&s='+$('#sort_order').val()+'&p='+$('#people_cluster').val(); } }); $('.search-go').click(function(e) { e.preventDefault(); window.location = get_search_url(); }); $('.logout').click(function(e) { e.preventDefault(); }); $('.header_keywords, .home_page_keywords').on('keydown', function(e) { if (e.keyCode == 13) { window.location = get_search_url(); } $('.search-save-box').hide(); }); $('.seemore').click(function(e){ e.stopImmediatePropagation(); }); });

Add to Library

An Optogenetic Platform for Real-Time, Single-Cell Interrogation of Stochastic Transcriptional Regulation.

Jun 03, 2018
Molecular Cell

Rullan M, Benzinger D, Schmidt GW, Milias-Argeitis A, Khammash M

Transcription is a highly regulated and inherently stochastic process. The complexity of signal transduction and gene regulation makes it challenging to analyze how the dynamic activity of transcriptional regulators affects stochastic transcription. By combining a fast-acting, photo-regulatable transcription factor with nascent RNA quantification in live cells and an experimental setup for precise spatiotemporal delivery of light inputs, we constructed a platform for the real-time, single-cell interrogation of transcription in Saccharomyces cerevisiae. We show that transcriptional activation and deactivation are fast and memoryless. By analyzing the temporal activity of individual cells, we found that transcription occurs in bursts, whose duration and timing are modulated by transcription factor activity. Using our platform, we regulated transcription via light-driven feedback loops at the single-cell level. Feedback markedly reduced cell-to-cell variability and led to qualitative differences in cellular transcriptional dynamics. Our platform establishes a flexible method for studying transcriptional dynamics in single cells.

Add Public PDF

Upload my PDF

Downloading PDF to your library...

ADD A TAG 64 chars max

Make private

APPLIED TAGS

Uploading PDF...

PDF uploading

Delete tag:

The link you entered does not seem to be valid

Please make sure the link points to nature.com contains a valid shared_access_token