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Subject: Molecular mechanism of histone H3K4me3 recognition by plant homeodomain of ING2 : Nature
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<H1 class=3Dpage-header>Letter</H1>
<P id=3Dcite><I>Nature</I> advance online publication 21 May 2006 | =
<ABBR=20
title=3D"Digital Object Identifier">doi</ABBR>:10.1038/nature04814; =
Received 27=20
February 2006; Accepted 11 April 2006; Published online 21 May 2006</P>
<H2 id=3Datl>Molecular mechanism of histone H3K4me3 recognition by plant =

homeodomain of ING2</H2>
<P id=3Daug>Pedro V. Pe=F1a<SUP><A title=3D"affiliated with "=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#a1">1</A></SUP>,=20
Foteini Davrazou<SUP><A title=3D"affiliated with "=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#a1">1</A></SUP>,=20
Xiaobing Shi<SUP><A title=3D"affiliated with "=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#a3">3</A></SUP>,=20
Kay L. Walter<SUP><A title=3D"affiliated with "=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#a3">3</A></SUP>,=20
Vladislav V. Verkhusha<SUP><A title=3D"affiliated with "=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#a4">4</A></SUP>,=20
Or Gozani<SUP><A title=3D"affiliated with "=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#a3">3</A></SUP>,=20
Rui Zhao<SUP><A title=3D"affiliated with "=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#a2">2</A></SUP>=20
and&nbsp;Tatiana G. Kutateladze<SUP><A title=3D"affiliated with "=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#a1">1</A></SUP></P>
<DIV id=3Dabs><A class=3D"backtotop hidden"=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#top">Top<SPAN=20
class=3Dhidden> of page</SPAN></A>
<P class=3Dlead>Covalent modifications of histone tails have a key role =
in=20
regulating chromatin structure and controlling transcriptional activity. =
In=20
eukaryotes, histone H3 trimethylated at lysine 4 (H3K4me3) is associated =
with=20
active chromatin and gene expression<SUP>1, </SUP><SUP>2, </SUP><SUP>3,=20
</SUP><SUP>4</SUP>. We recently found that plant homeodomain (PHD) =
finger of=20
tumour suppressor ING2 (inhibitor of growth 2) binds H3K4me3 and =
represents a=20
new family of modules that target this epigenetic mark<SUP>5</SUP>. The=20
molecular mechanism of H3K4me3 recognition, however, remains unknown. =
Here we=20
report a 2.0&nbsp;=C5 resolution structure of the mouse ING2 PHD finger =
in complex=20
with a histone H3 peptide trimethylated at lysine 4. The H3K4me3 tail is =
bound=20
in an extended conformation in a deep and extensive binding site =
consisting of=20
elements that are conserved among the ING family of proteins. The=20
trimethylammonium group of Lys 4 is recognized by the aromatic side =
chains of=20
Y215 and W238 residues, whereas the intermolecular hydrogen-bonding and=20
complementary surface interactions, involving Ala&nbsp;1, Arg&nbsp;2, =
Thr&nbsp;3=20
and Thr&nbsp;6 of the peptide, account for the PHD finger's high =
specificity and=20
affinity. Substitution of the binding site residues disrupts H3K4me3 =
interaction=20
<I>in vitro</I> and impairs the ability of ING2 to induce apoptosis =
<I>in=20
vivo</I>. Strong binding of other ING and YNG PHD fingers suggests that =
the=20
recognition of H3K4me3 histone code is a general feature of the ING/YNG=20
proteins. Elucidation of the mechanisms underlying this novel function =
of PHD=20
fingers provides a basis for deciphering the role of the ING family of =
tumour=20
suppressors in chromatin regulation and signalling.</P></DIV>
<DIV class=3Dno-header-art></DIV>
<DIV id=3Daffiliations-notes>
<OL>
  <LI id=3Da1>Department of Pharmacology, and
  <LI id=3Da2>Department of Biochemistry and Molecular Genetics, =
University of=20
  Colorado Health Sciences Center, Aurora, Colorado 80045, USA=20
  <LI id=3Da3>Department of Biological Sciences, Stanford University, =
Stanford,=20
  California 94305, USA=20
  <LI id=3Da4>Department of Anatomy and Structural Biology, Albert =
Einstein=20
  College of Medicine, Bronx, New York 10461, USA </LI></OL>
<P class=3Dcaff>Correspondence to: Tatiana G. Kutateladze<SUP><A=20
title=3D"affiliated with "=20
href=3D"http://www.nature.com/nature/journal/vaop/ncurrent/abs/nature0481=
4.html#a1">1</A></SUP>=20
Correspondence and requests for materials should be addressed to T.G.K.=20
(Email:&nbsp;<A=20
href=3D"mailto:Tatiana.Kutateladze@uchsc.edu">Tatiana.Kutateladze@uchsc.e=
du</A>).The=20
coordinates have been deposited in the Protein Data Bank under accession =
number=20
2G6Q.</P>
<P class=3Dprdates></P></DIV>
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	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 100%; =
BACKGROUND-IMAGE: none; PADDING-BOTTOM: 0px; PADDING-TOP: 0px
}
.button {
	FONT-WEIGHT: bold; FONT-SIZE: 80%; COLOR: #fff; BACKGROUND-COLOR: #000
}
.clear {
	CLEAR: both
}
.clearleft {
	CLEAR: left
}
OL.decimal {
	LIST-STYLE-TYPE: decimal
}
OL.decimal-leading-zero {
=09
}
OL.lower-alpha {
	LIST-STYLE-TYPE: lower-alpha
}
OL.upper-alpha {
	LIST-STYLE-TYPE: upper-alpha
}
OL.lower-roman {
	LIST-STYLE-TYPE: lower-roman
}
OL.upper-roman {
	LIST-STYLE-TYPE: upper-roman
}
OL.lower-greek {
=09
}
.align-left {
	TEXT-ALIGN: left
}
.align-center {
	TEXT-ALIGN: center
}
.align-right {
	TEXT-ALIGN: right
}
.align-baseline {
	VERTICAL-ALIGN: baseline
}
.align-sub {
	VERTICAL-ALIGN: sub
}
.align-super {
	VERTICAL-ALIGN: super
}
.align-text-top {
	VERTICAL-ALIGN: text-top
}
.align-middle {
	VERTICAL-ALIGN: middle
}
.align-bottom {
	VERTICAL-ALIGN: bottom
}
.align-text-bottom {
	VERTICAL-ALIGN: text-bottom
}
A.seealso {
	MARGIN-TOP: 1em; DISPLAY: block; FONT-SIZE: 70%; TEXT-DECORATION: none
}
A.seealso SPAN.see {
	FONT-WEIGHT: bold; COLOR: #c03
}
A.seealso SPAN.link {
	TEXT-DECORATION: underline
}
A.rss {
	PADDING-LEFT: 24px; BACKGROUND: url(/common/images/icons/rss.gif) =
no-repeat left center
}
A.rss:hover {
	BACKGROUND: url(/common/images/icons/rss.gif) no-repeat left center
}
#extranav A.rss {
	PADDING-LEFT: 22px; BACKGROUND: url(/common/images/icons/newsfeeds.gif) =
no-repeat left center; PADDING-BOTTOM: 2px; PADDING-TOP: 1px
}
#extranav A.receive {
	PADDING-LEFT: 22px; BACKGROUND: url(/common/images/icons/newsfeeds.gif) =
no-repeat left center; PADDING-BOTTOM: 2px; PADDING-TOP: 1px
}
#content SPAN.free {
	COLOR: #c03; TEXT-DECORATION: none
}
.dev-error {
	FONT-WEIGHT: bold; FONT-SIZE: 80%; BACKGROUND: #f00; COLOR: #fff
}
.b {
	FONT-WEIGHT: bold
}
.i {
	FONT-STYLE: italic
}
.latin {
	FONT-STYLE: italic
}
H1.page-header {
	FONT-WEIGHT: bold; FONT-SIZE: 140%; PADDING-BOTTOM: 4px; MARGIN: 15px =
0px 10px; BORDER-BOTTOM: #eaeaea 1px solid
}
SPAN.page-header-spacer {
	DISPLAY: block; FONT-WEIGHT: bold; FONT-SIZE: 140%; VISIBILITY: hidden; =
PADDING-BOTTOM: 4px; MARGIN: 15px 0px 0px
}
SPAN.journalname {
	FONT-STYLE: italic
}
SPAN.journalnumber {
	FONT-WEIGHT: bold
}
SPAN.tm {
	VERTICAL-ALIGN: super
}
 HTML #breadcrumb DIV {
	PADDING-LEFT: 19.4%; PADDING-TOP: 1px
}
#breadcrumb DIV {
	CLEAR: left; PADDING-LEFT: 19.6%; BACKGROUND: #eaeaea; PADDING-BOTTOM: =
0.2em
}
#breadcrumb DIV A:link {
	FONT-SIZE: 70%; COLOR: #000; TEXT-DECORATION: none
}
#breadcrumb DIV A:visited {
	FONT-SIZE: 70%; COLOR: #000; TEXT-DECORATION: none
}
#breadcrumb DIV A:hover {
	COLOR: #000; TEXT-DECORATION: underline
}
#breadcrumb SPAN.divider {
	FONT-SIZE: 70%; COLOR: #000
}
#breadcrumb SPAN.thisitem {
	FONT-SIZE: 70%; COLOR: #000
}
#login-inpage {
	MARGIN: 0px; COLOR: #000; BACKGROUND-COLOR: #eaeaea
}
#login-inpage A {
	FONT-SIZE: 70%
}
#login-inpage DIV.userpassbox {
	FLOAT: left; WIDTH: 8em
}
#login-inpage .passdetails {
	CLEAR: left
}
#login-inpage INPUT.text {
	FONT-SIZE: 80%; MARGIN: 0px; WIDTH: 9em; COLOR: #000
}
#login-inpage LABEL {
	FONT-SIZE: 70%
}
#login-inpage INPUT.button {
	MARGIN-TOP: 5px
}
#login-inpage #savepass-inpage {
	MARGIN-BOTTOM: -2px
}
#login-inpage DIV.error {
	PADDING-LEFT: 20px; FONT-SIZE: 80%; BACKGROUND: =
url(/common/images/login_error.gif) no-repeat 0px 4px; MARGIN-BOTTOM: =
5px; COLOR: #c30
}
#login-inpage DIV.error SPAN {
	FONT-WEIGHT: bold
}
#head-er HR {
	DISPLAY: none
}
#head-er .header-nonad-wrapper {
	PADDING-BOTTOM: 15px; BORDER-BOTTOM: #fff 1px solid
}
#head-er .accessibility-login-wrap {
	FLOAT: left; WIDTH: 100%; BORDER-BOTTOM: #000 1px solid; =
BACKGROUND-COLOR: #eaeaea
}
#head-er .accessibility-login {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 5px; =
PADDING-TOP: 4px; TEXT-ALIGN: right
}
#head-er .accessibility-login A.nature-link {
	FLOAT: left; FONT: bold 160%/80% Garamond, serif; WIDTH: 4.9em; COLOR: =
#b1062e; MARGIN-RIGHT: 20px; TEXT-ALIGN: left; TEXT-DECORATION: none
}
 HTML #head-er .accessibility-login A.nature-link:hover {
	BACKGROUND: none transparent scroll repeat 0% 0%
}
#head-er .accessibility-login A.nature-link:hover {
	BACKGROUND: =
url(/common/includes/header/images/nature.com.underline.gif) no-repeat =
left bottom
}
#head-er .accessibility-login IMG.nature-logo {
	BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; FLOAT: left; =
BORDER-BOTTOM-WIDTH: 0px; MARGIN: 1px 20px 0px 0px; WIDTH: 82px! =
important; HEIGHT: 11px; BORDER-RIGHT-WIDTH: 0px
}
#head-er .accessibility-login .jumplinks {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FLOAT: left; PADDING-BOTTOM: =
0px; MARGIN: 0px; WIDTH: 45%; PADDING-TOP: 0px; LIST-STYLE-TYPE: none; =
TEXT-ALIGN: left
}
#head-er .accessibility-login .jumplinks LI {
	DISPLAY: inline; PADDING-LEFT: 15px
}
#head-er .accessibility-login .jumplinks LI.first {
	PADDING-LEFT: 0px
}
#head-er .accessibility-login .jumplinks A {
	PADDING-LEFT: 10px; BACKGROUND: =
url(/common/images/icons/b1062e/arrow_down.gif) no-repeat left center; =
COLOR: #000; TEXT-DECORATION: none
}
#head-er .accessibility-login .jumplinks A:hover {
	TEXT-DECORATION: underline
}
#head-er DIV.logon {
=09
}
#head-er .logon .onlyformacie {
	FONT-SIZE: 3px
}
#head-er .logon .onlyformacie {
	DISPLAY: none
}
#head-er .logon A.login {
	PADDING-RIGHT: 15px; PADDING-LEFT: 0px; FONT-WEIGHT: bold; BACKGROUND: =
url(/common/includes/header/images/logon.gif) no-repeat right center; =
PADDING-BOTTOM: 0px; TEXT-TRANSFORM: uppercase; COLOR: #b1062e; =
PADDING-TOP: 0px; LETTER-SPACING: -0.1em; TEXT-DECORATION: none
}
#head-er .logon A.login:hover {
	BACKGROUND: url(/common/includes/header/images/logon_over.gif) =
no-repeat right center; TEXT-DECORATION: underline
}
#head-er .logon A.login:active {
	BACKGROUND: url(/common/includes/header/images/logon.gif) no-repeat =
right center
}
#head-er .logon A.logoff {
	PADDING-RIGHT: 15px; PADDING-LEFT: 15px; FONT-WEIGHT: bold; BACKGROUND: =
url(/common/includes/header/images/logoff.gif) no-repeat right center; =
PADDING-BOTTOM: 0px; TEXT-TRANSFORM: uppercase; COLOR: #b1062e; =
PADDING-TOP: 0px; LETTER-SPACING: -0.1em; TEXT-DECORATION: none
}
#head-er .logon P {
	MARGIN: 0px
}
#head-er .logon .user {
	FONT-WEIGHT: bold
}
#head-er .logon .inst {
	FONT-WEIGHT: bold
}
#head-er .image-user-services-wrap {
	FLOAT: left; WIDTH: 100%; BACKGROUND-COLOR: #d6335c
}
#head-er .image-user-services {
	BORDER-BOTTOM: transparent 1px solid
}
 HTML #head-er .image-user-services {
	BORDER-BOTTOM-WIDTH: 0px
}
#head-er .image-user-services IMG.journal-header {
	BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; FLOAT: left; =
BORDER-BOTTOM-WIDTH: 0px; MARGIN: 0px; WIDTH: 344px; HEIGHT: 74px; =
BORDER-RIGHT-WIDTH: 0px
}
#head-er .user-services {
	FLOAT: right
}
#head-er .div1 {
	WIDTH: 12.35em! important
}
#head-er .div2 {
	WIDTH: 8.7em! important
}
#head-er .user-services UL {
	BORDER-RIGHT: #fff 0px solid; PADDING-RIGHT: 0px; BORDER-TOP: #fff 1px =
solid; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 22px 0px 21px; =
BORDER-LEFT: #fff 1px solid; PADDING-TOP: 0px; BORDER-BOTTOM: #fff 0px =
solid; LIST-STYLE-TYPE: none; TEXT-ALIGN: right
}
#head-er .user-services UL.list1 {
	BORDER-RIGHT: #fff 1px solid
}
#head-er .user-services LI {
	BORDER-BOTTOM: #fff 1px solid
}
#head-er .user-services A {
	PADDING-RIGHT: 13px; DISPLAY: block; PADDING-LEFT: 0px; BACKGROUND: =
url(/common/images/icons/fff/arrow_s.gif) #767474 no-repeat right =
center; PADDING-BOTTOM: 1px; TEXT-TRANSFORM: uppercase; COLOR: #fff; =
PADDING-TOP: 1px; TEXT-DECORATION: none
}
#head-er .user-services A:hover {
	BACKGROUND: url(/common/images/icons/fff/arrow_s.gif) #000 no-repeat =
right center
}
#head-er .publications-search-wrap {
	BACKGROUND: #000
}
 HTML #head-er .publications-search {
	PADDING-BOTTOM: 3px; PADDING-TOP: 3px
}
#head-er .publications-search {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 4px; =
PADDING-TOP: 4px
}
 HTML #head-er .publications {
	MARGIN: 6px 0px 0px
}
#head-er .publications {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FLOAT: left; PADDING-BOTTOM: =
0px; MARGIN: 4px 0px 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none
}
#head-er .publications LI {
	DISPLAY: inline; MARGIN-LEFT: 10px
}
#head-er .publications LI.first {
	MARGIN-LEFT: 0px
}
#head-er .publications A {
	PADDING-RIGHT: 15px; BACKGROUND: =
url(/common/images/icons/fff/arrow_s.gif) no-repeat right center; =
TEXT-TRANSFORM: uppercase; COLOR: #fff; TEXT-DECORATION: none
}
#head-er .publications A:hover {
	TEXT-DECORATION: underline
}
#head-er .search {
	TEXT-ALIGN: right
}
#head-er .search FORM {
	DISPLAY: inline; MARGIN: 0px
}
#head-er .search FORM A {
	PADDING-RIGHT: 14px; BACKGROUND: =
url(/common/images/icons/fff/arrow_s.gif) no-repeat right center; =
TEXT-TRANSFORM: uppercase; COLOR: #fff; TEXT-DECORATION: none
}
#head-er .search FORM A:hover {
	TEXT-DECORATION: underline
}
#head-er #searchtext {
	WIDTH: 10em
}
#head-er .publications-search LABEL {
	TEXT-TRANSFORM: uppercase; COLOR: #fff
}
#head-er INPUT {
	FONT-SIZE: 100%
}
#head-er SELECT {
	FONT-SIZE: 100%
}
#head-er .publications-search INPUT.button {
	PADDING-RIGHT: 3px; PADDING-LEFT: 3px; FONT-WEIGHT: bold; BACKGROUND: =
#eaeaea; PADDING-BOTTOM: 0px; COLOR: #000; PADDING-TOP: 0px
}
#head-er .accessibility-login {
	PADDING-RIGHT: 1%; PADDING-LEFT: 1%
}
#head-er .image-user-services {
	PADDING-RIGHT: 1%; PADDING-LEFT: 1%
}
#head-er .publications-search {
	PADDING-RIGHT: 1%; PADDING-LEFT: 1%
}
.header-leaderboard-wrap {
	PADDING-RIGHT: 1%; PADDING-LEFT: 1%; BACKGROUND: =
url(/common/includes/header/images/bg_leaderboard.gif) no-repeat 50% 0px
}
.header-leaderboard {
	TEXT-ALIGN: center; max-height: 105px
}
 HTML .header-leaderboard IMG {
	BORDER-BOTTOM-WIDTH: 1px
}
 HTML .header-leaderboard ilayer {
	BORDER-BOTTOM-WIDTH: 1px
}
 HTML .header-leaderboard IFRAME {
	BORDER-BOTTOM-WIDTH: 1px
}
 HTML .header-leaderboard EMBED {
	BORDER-BOTTOM-WIDTH: 1px
}
.header-leaderboard IMG {
	BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; =
BORDER-LEFT-WIDTH: 0px; PADDING-BOTTOM: 0px; WIDTH: 100%; PADDING-TOP: =
0px; BORDER-BOTTOM: #fff 1px solid; HEIGHT: 90px; BORDER-RIGHT-WIDTH: =
0px; max-width: 728px
}
.header-leaderboard ilayer {
	BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; =
BORDER-LEFT-WIDTH: 0px; PADDING-BOTTOM: 0px; WIDTH: 100%; PADDING-TOP: =
0px; BORDER-BOTTOM: #fff 1px solid; HEIGHT: 90px; BORDER-RIGHT-WIDTH: =
0px; max-width: 728px
}
.header-leaderboard IFRAME {
	BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; =
BORDER-LEFT-WIDTH: 0px; PADDING-BOTTOM: 0px; WIDTH: 100%; PADDING-TOP: =
0px; BORDER-BOTTOM: #fff 1px solid; HEIGHT: 90px; BORDER-RIGHT-WIDTH: =
0px; max-width: 728px
}
.header-leaderboard EMBED {
	BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; =
BORDER-LEFT-WIDTH: 0px; PADDING-BOTTOM: 0px; WIDTH: 100%; PADDING-TOP: =
0px; BORDER-BOTTOM: #fff 1px solid; HEIGHT: 90px; BORDER-RIGHT-WIDTH: =
0px; max-width: 728px
}
.header-leaderboard TABLE {
	BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; =
BORDER-LEFT-WIDTH: 0px; PADDING-BOTTOM: 0px; MARGIN-LEFT: auto; WIDTH: =
100%; MARGIN-RIGHT: auto; PADDING-TOP: 0px; BORDER-BOTTOM: #fff 1px =
solid; BORDER-RIGHT-WIDTH: 0px; max-width: 728px
}
 HTML .header-leaderboard TABLE IMG {
	HEIGHT: auto
}
#global-subject-areas {
	BORDER-RIGHT: #ebebeb 1px solid; BORDER-TOP: #ebebeb 1px solid; =
BACKGROUND: #ebebeb; MARGIN: 0px 0px 20px; BORDER-LEFT: #ebebeb 1px =
solid; BORDER-BOTTOM: #ebebeb 1px solid
}
#global-subject-areas abbr {
	BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: =
0px; BORDER-RIGHT-WIDTH: 0px; TEXT-DECORATION: none
}
#global-subject-areas A:link {
	FONT-WEIGHT: bold; COLOR: #9d0006; TEXT-DECORATION: none
}
#global-subject-areas A:visited {
	FONT-WEIGHT: bold; COLOR: #9d0006; TEXT-DECORATION: none
}
#global-subject-areas A:hover {
	TEXT-DECORATION: underline
}
#global-subject-areas H2 {
	PADDING-RIGHT: 10px; PADDING-LEFT: 10px; FONT-SIZE: 110%; BACKGROUND: =
#b1062e; PADDING-BOTTOM: 5px; MARGIN: 0px; COLOR: #fff; PADDING-TOP: =
5px; BORDER-BOTTOM: #fff 1px solid
}
#global-subject-areas H3 {
	PADDING-RIGHT: 10px; PADDING-LEFT: 10px; FONT-SIZE: 110%; BACKGROUND: =
#b1062e; PADDING-BOTTOM: 5px; MARGIN: 0px; COLOR: #fff; PADDING-TOP: =
5px; BORDER-BOTTOM: #fff 1px solid
}
#global-subject-areas H4 {
	PADDING-RIGHT: 10px; PADDING-LEFT: 10px; FONT-SIZE: 110%; BACKGROUND: =
#b1062e; PADDING-BOTTOM: 5px; MARGIN: 0px; COLOR: #fff; PADDING-TOP: =
5px; BORDER-BOTTOM: #fff 1px solid
}
#global-subject-areas H5 {
	PADDING-RIGHT: 10px; PADDING-LEFT: 10px; FONT-SIZE: 110%; BACKGROUND: =
#b1062e; PADDING-BOTTOM: 5px; MARGIN: 0px; COLOR: #fff; PADDING-TOP: =
5px; BORDER-BOTTOM: #fff 1px solid
}
#global-subject-areas H3.view {
	PADDING-RIGHT: 17px; PADDING-LEFT: 17px; FONT-SIZE: 100%; BACKGROUND: =
url(/common/images/bg.7x1.b1062e.gif) #fff repeat-y left top; =
PADDING-BOTTOM: 5px; MARGIN: 0px; COLOR: #9d0006; PADDING-TOP: 5px; =
BORDER-BOTTOM: #fff 1px solid
}
#global-subject-areas H4.view {
	PADDING-RIGHT: 17px; PADDING-LEFT: 17px; FONT-SIZE: 100%; BACKGROUND: =
url(/common/images/bg.7x1.b1062e.gif) #fff repeat-y left top; =
PADDING-BOTTOM: 5px; MARGIN: 0px; COLOR: #9d0006; PADDING-TOP: 5px; =
BORDER-BOTTOM: #fff 1px solid
}
#global-subject-areas H5.view {
	PADDING-RIGHT: 17px; PADDING-LEFT: 17px; FONT-SIZE: 100%; BACKGROUND: =
url(/common/images/bg.7x1.b1062e.gif) #fff repeat-y left top; =
PADDING-BOTTOM: 5px; MARGIN: 0px; COLOR: #9d0006; PADDING-TOP: 5px; =
BORDER-BOTTOM: #fff 1px solid
}
#global-subject-areas UL {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 100%; PADDING-BOTTOM: =
0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none
}
#global-subject-areas UL UL {
	FONT-SIZE: 100%
}
#global-subject-areas UL LI {
	PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 5px; =
LINE-HEIGHT: 150%; PADDING-TOP: 5px; BORDER-BOTTOM: #fff 1px solid
}
#global-subject-areas UL LI LI {
	PADDING-RIGHT: 0px; PADDING-LEFT: 5px; BORDER-BOTTOM-WIDTH: 0px; =
PADDING-BOTTOM: 0px; PADDING-TOP: 0px
}
#global-subject-areas UL LI H4 {
	BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; =
FONT-WEIGHT: normal; BORDER-LEFT-WIDTH: 0px; FONT-SIZE: 100%; =
BACKGROUND: none transparent scroll repeat 0% 0%; BORDER-BOTTOM-WIDTH: =
0px; PADDING-BOTTOM: 0px; MARGIN: 0px; COLOR: #666; PADDING-TOP: 0px; =
FONT-STYLE: italic; BORDER-RIGHT-WIDTH: 0px
}
#global-subject-areas UL LI H5 {
	BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; =
FONT-WEIGHT: normal; BORDER-LEFT-WIDTH: 0px; FONT-SIZE: 100%; =
BACKGROUND: none transparent scroll repeat 0% 0%; BORDER-BOTTOM-WIDTH: =
0px; PADDING-BOTTOM: 0px; MARGIN: 0px; COLOR: #666; PADDING-TOP: 0px; =
FONT-STYLE: italic; BORDER-RIGHT-WIDTH: 0px
}
#global-subject-areas UL LI H6 {
	BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; =
FONT-WEIGHT: normal; BORDER-LEFT-WIDTH: 0px; FONT-SIZE: 100%; =
BACKGROUND: none transparent scroll repeat 0% 0%; BORDER-BOTTOM-WIDTH: =
0px; PADDING-BOTTOM: 0px; MARGIN: 0px; COLOR: #666; PADDING-TOP: 0px; =
FONT-STYLE: italic; BORDER-RIGHT-WIDTH: 0px
}
MAP.journal-nav {
	DISPLAY: block; MARGIN-BOTTOM: 20px
}
MAP.journal-nav UL {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: =
0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none; TEXT-ALIGN: left
}
MAP.journal-nav UL LI {
	MARGIN: 0px; BORDER-BOTTOM: #fff 1px solid; BACKGROUND-COLOR: #eaeaea
}
MAP.journal-nav UL LI.grouped {
	BORDER-BOTTOM: #eaeaea 1px solid
}
 HTML MAP.journal-nav UL LI A {
	PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 3px; =
PADDING-TOP: 2px
}
 HTML MAP.journal-nav UL LI A:visited {
	PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 3px; =
PADDING-TOP: 2px
}
MAP.journal-nav UL LI A {
	PADDING-RIGHT: 5px; DISPLAY: block; PADDING-LEFT: 5px; FONT-WEIGHT: =
bold; FONT-SIZE: 80%; PADDING-BOTTOM: 4px; MARGIN: 0px; COLOR: #000; =
PADDING-TOP: 4px; TEXT-DECORATION: none
}
MAP.journal-nav UL LI A:visited {
	PADDING-RIGHT: 5px; DISPLAY: block; PADDING-LEFT: 5px; FONT-WEIGHT: =
bold; FONT-SIZE: 80%; PADDING-BOTTOM: 4px; MARGIN: 0px; COLOR: #000; =
PADDING-TOP: 4px; TEXT-DECORATION: none
}
MAP.journal-nav UL LI A:hover {
	COLOR: #fff; BACKGROUND-COLOR: #c00; TEXT-DECORATION: none
}
MAP.journal-nav UL LI A.on {
	COLOR: #fff; BACKGROUND-COLOR: #c00
}
MAP.journal-nav UL LI A.on:visited {
	COLOR: #fff; BACKGROUND-COLOR: #c00
}
MAP.journal-nav UL LI A.submission {
	PADDING-LEFT: 20px! important; BACKGROUND: =
url(/common/images/online_submissions.gif) no-repeat left center
}
MAP.journal-nav UL LI UL.subnav {
	BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; =
PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: =
none; TEXT-ALIGN: left
}
MAP.journal-nav UL LI UL.subnav LI {
	BACKGROUND: url(/common/images/nav_dots2.gif) #fafafa no-repeat 11px =
5px; BORDER-BOTTOM-WIDTH: 0px; MARGIN: 0px
}
MAP.journal-nav UL LI UL.subnav LI.on {
	BACKGROUND: url(/common/images/nav_dots1.gif) #c00 no-repeat 11px 5px; =
BORDER-BOTTOM: #fafafa 1px solid
}
 HTML MAP.journal-nav UL LI UL.subnav A {
	PADDING-RIGHT: 10px; PADDING-LEFT: 20px; PADDING-BOTTOM: 0px; =
PADDING-TOP: 0px
}
MAP.journal-nav UL LI UL.subnav A:link {
	PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 20px; FONT-WEIGHT: =
normal; FONT-SIZE: 70%; PADDING-BOTTOM: 2px; MARGIN: 0px; COLOR: #000; =
PADDING-TOP: 2px; TEXT-DECORATION: none
}
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	BACKGROUND-COLOR: #f6f6f6
}
#article-related TABLE.data TBODY TR.odd {
	BACKGROUND-COLOR: #fff
}
#article-related TABLE.data TBODY TD {
	BORDER-RIGHT: #999 1px solid; BORDER-BOTTOM: #999 1px solid
}
#article-related TABLE.data TFOOT {
	POSITION: relative
}
#article-related TABLE.data TFOOT TD {
	FONT-SIZE: 7pt; BACKGROUND-COLOR: #fff
}

------=_NextPart_000_0000_01C67E69.31203CE0
Content-Type: application/octet-stream
Content-Transfer-Encoding: quoted-printable
Content-Location: http://www.nature.com/common/scripts/minmax.js

// minmax.js: make IE5+/Win support CSS min/max-width/height=0A=
// version 1.0, 08-Aug-2003=0A=
// written by Andrew Clover <and@doxdesk.com>, use freely=0A=
=0A=
/*@cc_on=0A=
@if (@_win32 && @_jscript_version>4)=0A=
=0A=
var minmax_elements;=0A=
=0A=
minmax_props=3D new Array(=0A=
  new Array('min-width', 'minWidth'),=0A=
  new Array('max-width', 'maxWidth'),=0A=
  new Array('min-height','minHeight'),=0A=
  new Array('max-height','maxHeight')=0A=
);=0A=
=0A=
// Binding. Called on all new elements. If <body>, initialise; check all=0A=
// elements for minmax properties=0A=
=0A=
function minmax_bind(el) {=0A=
  var i, em, ms;=0A=
  var st=3D el.style, cs=3D el.currentStyle;=0A=
=0A=
  if (minmax_elements=3D=3Dwindow.undefined) {=0A=
    // initialise when body element has turned up, but only on IE=0A=
    if (!document.body || !document.body.currentStyle) return;=0A=
    minmax_elements=3D new Array();=0A=
    window.attachEvent('onresize', minmax_delayout);=0A=
    // make font size listener=0A=
    em=3D document.createElement('div');=0A=
    em.setAttribute('id', 'minmax_em');=0A=
    em.style.position=3D 'absolute'; em.style.visibility=3D 'hidden';=0A=
    em.style.fontSize=3D 'xx-large'; em.style.height=3D '5em';=0A=
    em.style.top=3D'-5em'; em.style.left=3D '0';=0A=
    if (em.style.setExpression) {=0A=
      em.style.setExpression('width', 'minmax_checkFont()');=0A=
      document.body.insertBefore(em, document.body.firstChild);=0A=
    }=0A=
  }=0A=
=0A=
  // transform hyphenated properties the browser has not caught to =
camelCase=0A=
  for (i=3D minmax_props.length; i-->0;)=0A=
    if (cs[minmax_props[i][0]])=0A=
      st[minmax_props[i][1]]=3D cs[minmax_props[i][0]];=0A=
  // add element with properties to list, store optimal size values=0A=
  for (i=3D minmax_props.length; i-->0;) {=0A=
    ms=3D cs[minmax_props[i][1]];=0A=
    if (ms && ms!=3D'auto' && ms!=3D'none' && ms!=3D'0' && ms!=3D'') {=0A=
      st.minmaxWidth=3D cs.width; st.minmaxHeight=3D cs.height;=0A=
      minmax_elements[minmax_elements.length]=3D el;=0A=
      // will need a layout later=0A=
      minmax_delayout();=0A=
      break;=0A=
  } }=0A=
}=0A=
=0A=
// check for font size changes=0A=
=0A=
var minmax_fontsize=3D 0;=0A=
function minmax_checkFont() {=0A=
  var fs=3D document.getElementById('minmax_em').offsetHeight;=0A=
  if (minmax_fontsize!=3Dfs && minmax_fontsize!=3D0)=0A=
    minmax_delayout();=0A=
  minmax_fontsize=3D fs;=0A=
  return '5em';=0A=
}=0A=
=0A=
// Layout. Called after window and font size-change. Go through elements =
we=0A=
// picked out earlier and set their size to the minimum, maximum and =
optimum,=0A=
// choosing whichever is appropriate=0A=
=0A=
// Request re-layout at next available moment=0A=
var minmax_delaying=3D false;=0A=
function minmax_delayout() {=0A=
  if (minmax_delaying) return;=0A=
  minmax_delaying=3D true;=0A=
  window.setTimeout(minmax_layout, 0);=0A=
}=0A=
=0A=
function minmax_stopdelaying() {=0A=
  minmax_delaying=3D false;=0A=
}=0A=
=0A=
function minmax_layout() {=0A=
  window.setTimeout(minmax_stopdelaying, 100);=0A=
  var i, el, st, cs, optimal, inrange;=0A=
  for (i=3D minmax_elements.length; i-->0;) {=0A=
    el=3D minmax_elements[i]; st=3D el.style; cs=3D el.currentStyle;=0A=
=0A=
    // horizontal size bounding=0A=
    st.width=3D st.minmaxWidth; optimal=3D el.offsetWidth;=0A=
    inrange=3D true;=0A=
    if (inrange && cs.minWidth && cs.minWidth!=3D'0' && =
cs.minWidth!=3D'auto' && cs.minWidth!=3D'') {=0A=
      st.width=3D cs.minWidth;=0A=
      inrange=3D (el.offsetWidth<optimal);=0A=
    }=0A=
    if (inrange && cs.maxWidth && cs.maxWidth!=3D'none' && =
cs.maxWidth!=3D'auto' && cs.maxWidth!=3D'') {=0A=
      st.width=3D cs.maxWidth;=0A=
      inrange=3D (el.offsetWidth>optimal);=0A=
    }=0A=
    if (inrange) st.width=3D st.minmaxWidth;=0A=
=0A=
    // vertical size bounding=0A=
    st.height=3D st.minmaxHeight; optimal=3D el.offsetHeight;=0A=
    inrange=3D true;=0A=
    if (inrange && cs.minHeight && cs.minHeight!=3D'0' && =
cs.minHeight!=3D'auto' && cs.minHeight!=3D'') {=0A=
      st.height=3D cs.minHeight;=0A=
      inrange=3D (el.offsetHeight<optimal);=0A=
    }=0A=
    if (inrange && cs.maxHeight && cs.maxHeight!=3D'none' && =
cs.maxHeight!=3D'auto' && cs.maxHeight!=3D'') {=0A=
      st.height=3D cs.maxHeight;=0A=
      inrange=3D (el.offsetHeight>optimal);=0A=
    }=0A=
    if (inrange) st.height=3D st.minmaxHeight;=0A=
  }=0A=
}=0A=
=0A=
// Scanning. Check document every so often until it has finished =
loading. Do=0A=
// nothing until <body> arrives, then call main init. Pass any new =
elements=0A=
// found on each scan to be bound   =0A=
=0A=
var minmax_SCANDELAY=3D 500;=0A=
=0A=
function minmax_scan() {=0A=
  var el;=0A=
  for (var i=3D 0; i<document.all.length; i++) {=0A=
    el=3D document.all[i];=0A=
    if (!el.minmax_bound) {=0A=
      el.minmax_bound=3D true;=0A=
      minmax_bind(el);=0A=
  } }=0A=
}=0A=
=0A=
var minmax_scanner;=0A=
function minmax_stop() {=0A=
  window.clearInterval(minmax_scanner);=0A=
  minmax_scan();=0A=
}=0A=
=0A=
minmax_scan();=0A=
minmax_scanner=3D window.setInterval(minmax_scan, minmax_SCANDELAY);=0A=
window.attachEvent('onload', minmax_stop);=0A=
=0A=
@end @*/=0A=

------=_NextPart_000_0000_01C67E69.31203CE0--

