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July 18, 2011 - Volume 89, Number 29
- p. 27
Mechanism Reported For Eliminylation
Carbanion-based route is likely path for recently discovered=20 post-translational protein modification
Celia =
Henry=20
Arnaud
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More Science & Technology Concentrates
- Study may lead to new ways to deliver drugs and = imaging=20 agents
- Model substrate provides biologically active platform = on which=20 to study dynamic cell and tissue processes
- Molecule selectively destroys cancer cells by = blocking=20 dissipation of reactive oxygen species
- Carbanion-based route is likely path for recently = discovered=20 post-translational protein modification
- 204-residue portion of protein yields to chemical = ligation
- Air-sensitive molybdenum compounds reversibly = converted to=20 stable solids
- Mass Spec Method Complements Spectroscopy Techniques = For=20 Analyzing Discharged Water
- Strategy borrowed from protein chemistry helps pin = down elusive=20 isomeric structures of small organic molecules
Topics Covered
Eliminylation, a type of posttranslational protein modification =
discovered=20
recently, most likely proceeds via a carbanion intermediate, according =
to
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- ISSN 0009-2347
- Copyright =A9 2011 American Chemical Society
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return false;=0A= }=0A= }=0A= =0A= this.enableKeyboardNav();=0A= },=0A= =0A= //=0A= // enableKeyboardNav()=0A= //=0A= enableKeyboardNav: function() {=0A= document.onkeydown =3D this.keyboardAction; =0A= },=0A= =0A= //=0A= // disableKeyboardNav()=0A= //=0A= disableKeyboardNav: function() {=0A= document.onkeydown =3D '';=0A= },=0A= =0A= //=0A= // keyboardAction()=0A= //=0A= keyboardAction: function(e) {=0A= if (e =3D=3D null) { // ie=0A= keycode =3D event.keyCode;=0A= } else { // mozilla=0A= keycode =3D e.which;=0A= }=0A= =0A= key =3D String.fromCharCode(keycode).toLowerCase();=0A= =0A= if((key =3D=3D 'x') || (key =3D=3D 'o') || (key =3D=3D 'c')){ // close = lightbox=0A= myLightbox.end();=0A= } else if(key =3D=3D 'p'){ // display previous image=0A= if(activeImage !=3D 0){=0A= myLightbox.disableKeyboardNav();=0A= myLightbox.changeImage(activeImage - 1);=0A= }=0A= } else if(key =3D=3D 'n'){ // display next image=0A= if(activeImage !=3D (imageArray.length - 1)){=0A= myLightbox.disableKeyboardNav();=0A= myLightbox.changeImage(activeImage + 1);=0A= }=0A= }=0A= =0A= =0A= },=0A= =0A= //=0A= // preloadNeighborImages()=0A= // Preload previous and next images.=0A= //=0A= preloadNeighborImages: function(){=0A= =0A= if((imageArray.length - 1) > activeImage){=0A= preloadNextImage =3D new Image();=0A= preloadNextImage.src =3D imageArray[activeImage + 1][0];=0A= }=0A= if(activeImage > 0){=0A= preloadPrevImage =3D new Image();=0A= preloadPrevImage.src =3D imageArray[activeImage - 1][0];=0A= }=0A= =0A= },=0A= =0A= //=0A= // end()=0A= //=0A= end: function() {=0A= this.disableKeyboardNav();=0A= Element.hide('lightbox');=0A= new Effect.Fade('overlay', { duration: 0.2});=0A= showSelectBoxes();=0A= }=0A= }=0A= =0A= // = -------------------------------------------------------------------------= ----------=0A= =0A= //=0A= // getPageScroll()=0A= // Returns array with x,y page scroll values.=0A= // Core code from - quirksmode.org=0A= //=0A= function getPageScroll(){=0A= =0A= var yScroll;=0A= =0A= if (self.pageYOffset) {=0A= yScroll =3D self.pageYOffset;=0A= } else if (document.documentElement && = document.documentElement.scrollTop){ // Explorer 6 Strict=0A= yScroll =3D document.documentElement.scrollTop;=0A= } else if (document.body) {// all other Explorers=0A= yScroll =3D document.body.scrollTop;=0A= }=0A= =0A= arrayPageScroll =3D new Array('',yScroll) =0A= return arrayPageScroll;=0A= }=0A= =0A= // = -------------------------------------------------------------------------= ----------=0A= =0A= //=0A= // getPageSize()=0A= // Returns array with page width, height and window width, height=0A= // Core code from - quirksmode.org=0A= // Edit for Firefox by pHaez=0A= //=0A= function getPageSize(){=0A= =0A= var xScroll, yScroll;=0A= =0A= if (window.innerHeight && window.scrollMaxY) { =0A= xScroll =3D document.body.scrollWidth;=0A= yScroll =3D window.innerHeight + window.scrollMaxY;=0A= } else if (document.body.scrollHeight > document.body.offsetHeight){ // = all but Explorer Mac=0A= xScroll =3D document.body.scrollWidth;=0A= yScroll =3D document.body.scrollHeight;=0A= } else { // Explorer Mac...would also work in Explorer 6 Strict, = Mozilla and Safari=0A= xScroll =3D document.body.offsetWidth;=0A= yScroll =3D document.body.offsetHeight;=0A= }=0A= =0A= var windowWidth, windowHeight;=0A= if (self.innerHeight) { // all except Explorer=0A= windowWidth =3D self.innerWidth;=0A= windowHeight =3D self.innerHeight;=0A= } else if (document.documentElement && = document.documentElement.clientHeight) { // Explorer 6 Strict Mode=0A= windowWidth =3D document.documentElement.clientWidth;=0A= windowHeight =3D document.documentElement.clientHeight;=0A= } else if (document.body) { // other Explorers=0A= windowWidth =3D document.body.clientWidth;=0A= windowHeight =3D document.body.clientHeight;=0A= } =0A= =0A= // for small pages with total height less then height of the viewport=0A= if(yScroll < windowHeight){=0A= pageHeight =3D windowHeight;=0A= } else { =0A= pageHeight =3D yScroll;=0A= }=0A= =0A= // for small pages with total width less then width of the viewport=0A= if(xScroll < windowWidth){ =0A= pageWidth =3D windowWidth;=0A= } else {=0A= pageWidth =3D xScroll;=0A= }=0A= =0A= =0A= arrayPageSize =3D new = Array(pageWidth,pageHeight,windowWidth,windowHeight) =0A= return arrayPageSize;=0A= }=0A= =0A= // = -------------------------------------------------------------------------= ----------=0A= =0A= //=0A= // getKey(key)=0A= // Gets keycode. If 'x' is pressed then it hides the lightbox.=0A= //=0A= function getKey(e){=0A= if (e =3D=3D null) { // ie=0A= keycode =3D event.keyCode;=0A= } else { // mozilla=0A= keycode =3D e.which;=0A= }=0A= key =3D String.fromCharCode(keycode).toLowerCase();=0A= =0A= if(key =3D=3D 'x'){=0A= }=0A= }=0A= =0A= // = -------------------------------------------------------------------------= ----------=0A= =0A= //=0A= // listenKey()=0A= //=0A= function listenKey () { document.onkeypress =3D getKey; }=0A= =0A= // ---------------------------------------------------=0A= =0A= function showSelectBoxes(){=0A= selects =3D document.getElementsByTagName("select");=0A= for (i =3D 0; i !=3D selects.length; i++) {=0A= selects[i].style.visibility =3D "visible";=0A= }=0A= }=0A= =0A= // ---------------------------------------------------=0A= =0A= function hideSelectBoxes(){=0A= selects =3D document.getElementsByTagName("select");=0A= for (i =3D 0; i !=3D selects.length; i++) {=0A= selects[i].style.visibility =3D "hidden";=0A= }=0A= }=0A= =0A= // ---------------------------------------------------=0A= =0A= //=0A= // pause(numberMillis)=0A= // Pauses code execution for specified time. Uses busy code, not good.=0A= // Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602=0A= //=0A= function pause(numberMillis) {=0A= var now =3D new Date();=0A= var exitTime =3D now.getTime() + numberMillis;=0A= while (true) {=0A= now =3D new Date();=0A= if (now.getTime() > exitTime)=0A= return;=0A= }=0A= }=0A= =0A= // ---------------------------------------------------=0A= =0A= =0A= =0A= function initLightbox() { myLightbox =3D new Lightbox(); }=0A= Event.observe(window, 'load', initLightbox, false); ------=_NextPart_000_0000_01CC5378.72E6C8D0 Content-Type: application/octet-stream Content-Transfer-Encoding: quoted-printable Content-Location: http://pubs.acs.org/cen/_scripts/storyTabs2.js //** Tab Content script v2.0- =A9 Dynamic Drive DHTML code library = (http://www.dynamicdrive.com)=0A= //** Updated Oct 7th, 07 to version 2.0. Contains numerous improvements:=0A= // -Added Auto Mode: Script auto rotates the tabs based on an = interval, until a tab is explicitly selected=0A= // -Ability to expand/contract arbitrary DIVs on the page as the = tabbed content is expanded/ contracted=0A= // -Ability to dynamically select a tab either based on its position = within its peers, or its ID attribute (give the target tab one 1st)=0A= // -Ability to set where the CSS classname "selected" get assigned- = either to the target tab's link ("A"), or its parent container=0A= //** Updated Feb 18th, 08 to version 2.1: Adds a = "tabinstance.cycleit(dir)" method to cycle forward or backward between = tabs dynamically=0A= //** Updated April 8th, 08 to version 2.2: Adds support for expanding a = tab using a URL parameter (ie: = http://mysite.com/tabcontent.htm?tabinterfaceid=3D0) =0A= =0A= ////NO NEED TO EDIT BELOW////////////////////////=0A= =0A= function ddtabcontent(tabinterfaceid){=0A= this.tabinterfaceid=3Dtabinterfaceid //ID of Tab Menu main container=0A= = this.tabs=3Ddocument.getElementById(tabinterfaceid).getElementsByTagName(= "a") //Get all tab links within container=0A= this.enabletabpersistence=3Dtrue=0A= this.hottabspositions=3D[] //Array to store position of tabs that have = a "rel" attr defined, relative to all tab links, within container=0A= this.currentTabIndex=3D0 //Index of currently selected hot tab (tab = with sub content) within hottabspositions[] array=0A= this.subcontentids=3D[] //Array to store ids of the sub contents ("rel" = attr values)=0A= this.revcontentids=3D[] //Array to store ids of arbitrary contents to = expand/contact as well ("rev" attr values)=0A= this.selectedClassTarget=3D"link" //keyword to indicate which target = element to assign "selected" CSS class ("linkparent" or "link")=0A= }=0A= =0A= ddtabcontent.getCookie=3Dfunction(Name){ =0A= var re=3Dnew RegExp(Name+"=3D[^;]+", "i"); //construct RE to search for = target name/value pair=0A= if (document.cookie.match(re)) //if cookie found=0A= return document.cookie.match(re)[0].split("=3D")[1] //return its value=0A= return ""=0A= }=0A= =0A= ddtabcontent.setCookie=3Dfunction(name, value){=0A= document.cookie =3D name+"=3D"+value+";path=3D/" //cookie value is = domain wide (path=3D/)=0A= }=0A= =0A= ddtabcontent.prototype=3D{=0A= =0A= expandit:function(tabid_or_position){ //PUBLIC function to select a tab = either by its ID or position(int) within its peers=0A= this.cancelautorun() //stop auto cycling of tabs (if running)=0A= var tabref=3D""=0A= try{=0A= if (typeof tabid_or_position=3D=3D"string" && = document.getElementById(tabid_or_position).getAttribute("rel")) //if = specified tab contains "rel" attr=0A= tabref=3Ddocument.getElementById(tabid_or_position)=0A= else if (parseInt(tabid_or_position)!=3DNaN && = this.tabs[tabid_or_position].getAttribute("rel")) //if specified tab = contains "rel" attr=0A= tabref=3Dthis.tabs[tabid_or_position]=0A= }=0A= catch(err){alert("Invalid Tab ID or position entered!")}=0A= if (tabref!=3D"") //if a valid tab is found based on function parameter=0A= this.expandtab(tabref) //expand this tab=0A= },=0A= =0A= cycleit:function(dir, autorun){ //PUBLIC function to move foward or = backwards through each hot tab (tabinstance.cycleit('foward/back') )=0A= if (dir=3D=3D"next"){=0A= var = currentTabIndex=3D(this.currentTabIndex