<title>RIB00108</title><meta http-equiv="content-type" content="text/html; charset=UTF-8"><table width="100%"><tbody><tr><td colspan="3" scope="col" style="background-color: rgb(0, 0, 127);" height="20" width="100%"><strong><span style="font-size: 16px; font-family: Verdana; color: rgb(255, 0, 0);"><em>  HATODAS</em> Heavy-atom Database System</span></strong></td></tr></tbody></table><table width="100%"><tbody><tr><td scope="col" rowspan="3" width="5"><br></td><td scope="col" rowspan="3" width="200"><br></td><td scope="col" rowspan="3" width="20"><br></td><td scope="col" align="left" valign="top" width="100%"><span style="font-family: Verdana; font-size: 12px; color: rgb(0, 0, 127);"><a title="HATODAS Home" href="http://hatodas.harima.riken.go.jp/" target="_blank"><em>Heavy-atom Database System</em></a> (HATODAS) is a WWW-based tool designed to assist the heavy-atom derivatization of proteins. The conventional procedure for the preparation of derivatives is usually a time-consuming `trial-and-error' process. The present program provides a solution for this problem using a database of known heavy-atom derivatives. A database search suggests potential heavy-atom reagents for any target protein based on its amino-acid sequence and crystallization conditions. A mining of the database identified 93 preferred motifs for heavy-atom binding. The motifs are observed frequently at the actual heavy-atom-binding sites encountered in the process of structure determination.</span></td></tr><tr><td colspan="3" scope="col" height="20" width="100%"><strong><span style="font-size: 12px; background-color: rgb(255, 255, 255); font-family: Verdana;"><a href="http://metadb.riken.jp/metadb/db/SciNetS_rib108i/http://metadb.riken.jp/db/SciNetS_rib108i/crib108s4i">HATODAS ver.1</a></span></strong>&nbsp;&nbsp;<span style="font-family: Verdana; font-size: 9px; color: rgb(0, 0, 127);"><a href="http://scripts.iucr.org/cgi-bin/paper?S0907444905019670">Heavy-atom Database System: a tool for the preparation of heavy-atom derivatives of protein crystals based on amino-acid sequence and crystallization conditions. Acta Crystallographica Section D61, 1302-1305, (2005).</a></span><br></td></tr><tr><td colspan="3" scope="col" height="20" width="100%"><strong><span style="font-size: 12px; background-color: rgb(255, 255, 255); font-family: Verdana;"><a href="http://metadb.riken.jp/metadb/db/SciNetS_rib108i/http://metadb.riken.jp/db/SciNetS_rib108i/crib108s5i">HATODAS ver.2</a></span></strong>&nbsp;&nbsp;<span style="font-family: Verdana; font-size: 9px; color: rgb(0, 0, 127);"><a href="http://scripts.iucr.org/cgi-bin/paper?he5418">HATODAS II - heavy-atom database system with potentiality scoring. Journal of Applied Crystallography, 42, 540-544. (2009).</a></span><!--<a href="/sw/links/en/crib108s4i/">HATODAS ver.1</a>&nbsp;&nbsp;<a href="/sw/links/en/crib108s5i/">HATODAS ver.2</a>--><!--<a href="http://hatodas.harima.riken.go.jp/hatodas_v1/cgi-bin/input.cgi">HATODAS ver.1</a>&nbsp;&nbsp;<a href="http://hatodas.harima.riken.go.jp/hatodas_v2/query/queryheavy.jsp">HATODAS ver.2</a>--><!--<a href="javascript:panelOpenById('CRIB00108U000001');">RIKEN Heavy Atom Record</a>--></td></tr></tbody></table> Imported from SciNetS RIKEN Harima Heavy-atom Database [Data] Imported from SciNetS http://metadb.riken.jp/metadb/db/SciNetS_rib108i http://metadb.riken.jp/metadb/db/SciNetS_rib108i RIKEN Harima Heavy-atom Database [Data] <title>RIB00108</title><meta http-equiv="content-type" content="text/html; charset=UTF-8"><table width="100%"><tbody><tr><td colspan="3" scope="col" style="background-color: rgb(0, 0, 127);" height="20" width="100%"><strong><span style="font-size: 16px; font-family: Verdana; color: rgb(255, 0, 0);"><em>  HATODAS</em> Heavy-atom Database System</span></strong></td></tr></tbody></table><table width="100%"><tbody><tr><td scope="col" rowspan="3" width="5"><br></td><td scope="col" rowspan="3" width="200"><br></td><td scope="col" rowspan="3" width="20"><br></td><td scope="col" align="left" valign="top" width="100%"><span style="font-family: Verdana; font-size: 12px; color: rgb(0, 0, 127);"><a title="HATODAS Home" href="http://hatodas.harima.riken.go.jp/" target="_blank"><em>Heavy-atom Database System</em></a> (HATODAS) is a WWW-based tool designed to assist the heavy-atom derivatization of proteins. The conventional procedure for the preparation of derivatives is usually a time-consuming `trial-and-error' process. The present program provides a solution for this problem using a database of known heavy-atom derivatives. A database search suggests potential heavy-atom reagents for any target protein based on its amino-acid sequence and crystallization conditions. A mining of the database identified 93 preferred motifs for heavy-atom binding. The motifs are observed frequently at the actual heavy-atom-binding sites encountered in the process of structure determination.</span></td></tr><tr><td colspan="3" scope="col" height="20" width="100%"><strong><span style="font-size: 12px; background-color: rgb(255, 255, 255); font-family: Verdana;"><a href="http://metadb.riken.jp/metadb/db/SciNetS_rib108i/http://metadb.riken.jp/db/SciNetS_rib108i/crib108s4i">HATODAS ver.1</a></span></strong>&nbsp;&nbsp;<span style="font-family: Verdana; font-size: 9px; color: rgb(0, 0, 127);"><a href="http://scripts.iucr.org/cgi-bin/paper?S0907444905019670">Heavy-atom Database System: a tool for the preparation of heavy-atom derivatives of protein crystals based on amino-acid sequence and crystallization conditions. Acta Crystallographica Section D61, 1302-1305, (2005).</a></span><br></td></tr><tr><td colspan="3" scope="col" height="20" width="100%"><strong><span style="font-size: 12px; background-color: rgb(255, 255, 255); font-family: Verdana;"><a href="http://metadb.riken.jp/metadb/db/SciNetS_rib108i/http://metadb.riken.jp/db/SciNetS_rib108i/crib108s5i">HATODAS ver.2</a></span></strong>&nbsp;&nbsp;<span style="font-family: Verdana; font-size: 9px; color: rgb(0, 0, 127);"><a href="http://scripts.iucr.org/cgi-bin/paper?he5418">HATODAS II - heavy-atom database system with potentiality scoring. Journal of Applied Crystallography, 42, 540-544. (2009).</a></span><!--<strong><span style="font-size: 12px; background-color: rgb(255, 255, 255); font-family: Verdana;">--><!--<a href="javascript:panelOpenById('CRIB00108U000001');">RIKEN Heavy Atom Record</a>--><!--<a href="/sw/links/ja/crib108s4i/">HATODAS ver.1</a>&nbsp;&nbsp;<a href="/sw/links/ja/crib108s5i/">HATODAS ver.2</a>--><!--<a href="http://hatodas.harima.riken.go.jp/hatodas_v1/cgi-bin/input.cgi">HATODAS ver.1</a>&nbsp;&nbsp;<a href="http://hatodas.harima.riken.go.jp/hatodas_v2/query/queryheavy.jsp">HATODAS ver.2</a>-->&nbsp;</span></strong>&nbsp;&nbsp;</td></tr></tbody></table>