JAL-1432 updated copyright notices
[jalview.git] / help / html / calculations / scorematrices.html
1 <html>
2 <!--
3  * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8.0b1)
4  * Copyright (C) 2014 The Jalview Authors
5  * 
6  * This file is part of Jalview.
7  * 
8  * Jalview is free software: you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License 
10  * as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
11  *  
12  * Jalview is distributed in the hope that it will be useful, but 
13  * WITHOUT ANY WARRANTY; without even the implied warranty 
14  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
15  * PURPOSE.  See the GNU General Public License for more details.
16  * 
17  * You should have received a copy of the GNU General Public License along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
18  * The Jalview Authors are detailed in the 'AUTHORS' file.
19 -->
20 <head>
21 <title>Substitution matrices in Jalview</title>
22 </head>
23 <body>
24 <strong>Substitution Matrices available in Jalview</strong>
25 <p>Jalview includes a small number of built in substitution matrices, used for different types of analysis.</p>
26 <ul>
27 <li><a href="#blosum62">BLOSUM62</a> is the standard protein sequence alignment and analysis matrix.</li>
28 <li><a href="#pam250">PAM250</a> is another standard protein matrix, but not currently available for use from Jalview's user interface.</li>
29 <li><a href="#simplenucleotide">Simple Nucleotide Substition</a> is a (fairly) arbitrary DNA/RNA substitution matrix.
30 </li>
31 </ul>
32
33 <p><strong><a name="blosum62"></a>BLOSUM62</strong><br/>
34 <table border="1">
35 <tr><td></td><td>&nbsp;A&nbsp;</td><td>&nbsp;B&nbsp;</td><td>&nbsp;C&nbsp;</td><td>&nbsp;D&nbsp;</td><td>&nbsp;E&nbsp;</td><td>&nbsp;F&nbsp;</td><td>&nbsp;G&nbsp;</td><td>&nbsp;H&nbsp;</td><td>&nbsp;I&nbsp;</td><td>&nbsp;K&nbsp;</td><td>&nbsp;L&nbsp;</td><td>&nbsp;M&nbsp;</td><td>&nbsp;N&nbsp;</td><td>&nbsp;P&nbsp;</td><td>&nbsp;Q&nbsp;</td><td>&nbsp;R&nbsp;</td><td>&nbsp;S&nbsp;</td><td>&nbsp;T&nbsp;</td><td>&nbsp;U&nbsp;</td><td>&nbsp;V&nbsp;</td><td>&nbsp;W&nbsp;</td><td>&nbsp;X&nbsp;</td><td>&nbsp;Y&nbsp;</td><td>&nbsp;Z&nbsp;</td></tr>
36 <tr><td>A</td><td>4</td><td>-2</td><td>0</td><td>-2</td><td>-1</td><td>-2</td><td>0</td><td>-2</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>-1</td><td>1</td><td>0</td><td>0</td><td>0</td><td>-3</td><td>0</td><td>-2</td><td>-1</td></tr>
37 <tr><td>B</td><td>-2</td><td>4</td><td>-3</td><td>4</td><td>1</td><td>-3</td><td>-1</td><td>0</td><td>-3</td><td>0</td><td>-4</td><td>-3</td><td>3</td><td>-2</td><td>0</td><td>-1</td><td>0</td><td>-1</td><td>-1</td><td>-3</td><td>-4</td><td>-1</td><td>-3</td><td>1</td></tr>
38 <tr><td>C</td><td>0</td><td>-3</td><td>9</td><td>-3</td><td>-4</td><td>-2</td><td>-3</td><td>-3</td><td>-1</td><td>-3</td><td>-1</td><td>-1</td><td>-3</td><td>-3</td><td>-3</td><td>3</td><td>-1</td><td>-1</td><td>-2</td><td>-1</td><td>-2</td><td>-2</td><td>-2</td><td>-3</td></tr>
39 <tr><td>D</td><td>-2</td><td>4</td><td>-3</td><td>6</td><td>2</td><td>-3</td><td>-1</td><td>-1</td><td>-3</td><td>-1</td><td>-4</td><td>-3</td><td>1</td><td>-1</td><td>0</td><td>-2</td><td>0</td><td>-1</td><td>-1</td><td>-3</td><td>-4</td><td>-1</td><td>-3</td><td>1</td></tr>
40 <tr><td>E</td><td>-1</td><td>1</td><td>-4</td><td>2</td><td>5</td><td>-3</td><td>-2</td><td>0</td><td>-3</td><td>1</td><td>-3</td><td>-2</td><td>0</td><td>-1</td><td>2</td><td>0</td><td>0</td><td>-1</td><td>-1</td><td>-2</td><td>-3</td><td>-1</td><td>-2</td><td>4</td></tr>
41 <tr><td>F</td><td>-2</td><td>-3</td><td>-2</td><td>-3</td><td>-3</td><td>6</td><td>-3</td><td>-1</td><td>0</td><td>-3</td><td>0</td><td>0</td><td>-3</td><td>-4</td><td>-3</td><td>-3</td><td>-2</td><td>-2</td><td>-1</td><td>-1</td><td>1</td><td>-1</td><td>3</td><td>-3</td></tr>
42 <tr><td>G</td><td>0</td><td>-1</td><td>-3</td><td>-1</td><td>-2</td><td>-3</td><td>6</td><td>-2</td><td>-4</td><td>-2</td><td>-4</td><td>-3</td><td>0</td><td>-2</td><td>-2</td><td>-2</td><td>0</td><td>-2</td><td>-1</td><td>-3</td><td>-2</td><td>-1</td><td>-3</td><td>-2</td></tr>
43 <tr><td>H</td><td>-2</td><td>0</td><td>-3</td><td>-1</td><td>0</td><td>-1</td><td>-2</td><td>8</td><td>-3</td><td>-1</td><td>-3</td><td>-2</td><td>1</td><td>-2</td><td>0</td><td>0</td><td>-1</td><td>-2</td><td>-1</td><td>-3</td><td>-2</td><td>-1</td><td>2</td><td>0</td></tr>
44 <tr><td>I</td><td>-1</td><td>-3</td><td>-1</td><td>-3</td><td>-3</td><td>0</td><td>-4</td><td>-3</td><td>4</td><td>-3</td><td>2</td><td>1</td><td>-3</td><td>-3</td><td>-3</td><td>-3</td><td>-2</td><td>-1</td><td>-1</td><td>3</td><td>-3</td><td>-1</td><td>-1</td><td>-3</td></tr>
45 <tr><td>K</td><td>-1</td><td>0</td><td>-3</td><td>-1</td><td>1</td><td>-3</td><td>-2</td><td>-1</td><td>-3</td><td>5</td><td>-2</td><td>-1</td><td>0</td><td>-1</td><td>1</td><td>2</td><td>0</td><td>-1</td><td>-1</td><td>-2</td><td>-3</td><td>-1</td><td>-2</td><td>1</td></tr>
46 <tr><td>L</td><td>-1</td><td>-4</td><td>-1</td><td>-4</td><td>-3</td><td>0</td><td>-4</td><td>-3</td><td>2</td><td>-2</td><td>4</td><td>2</td><td>-3</td><td>-3</td><td>-2</td><td>-2</td><td>-2</td><td>-1</td><td>-1</td><td>1</td><td>-2</td><td>-1</td><td>-1</td><td>-3</td></tr>
47 <tr><td>M</td><td>-1</td><td>-3</td><td>-1</td><td>-3</td><td>-2</td><td>0</td><td>-3</td><td>-2</td><td>1</td><td>-1</td><td>2</td><td>5</td><td>-2</td><td>-2</td><td>0</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td></tr>
48 <tr><td>N</td><td>-2</td><td>3</td><td>-3</td><td>1</td><td>0</td><td>-3</td><td>0</td><td>1</td><td>-3</td><td>0</td><td>-3</td><td>-2</td><td>6</td><td>-2</td><td>0</td><td>0</td><td>1</td><td>0</td><td>-1</td><td>-3</td><td>-4</td><td>-1</td><td>-2</td><td>0</td></tr>
49 <tr><td>P</td><td>-1</td><td>-2</td><td>-3</td><td>-1</td><td>-1</td><td>-4</td><td>-2</td><td>-2</td><td>-3</td><td>-1</td><td>-3</td><td>-2</td><td>-2</td><td>7</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>-2</td><td>-2</td><td>-4</td><td>-2</td><td>-3</td><td>-1</td></tr>
50 <tr><td>Q</td><td>-1</td><td>0</td><td>-3</td><td>0</td><td>2</td><td>-3</td><td>-2</td><td>0</td><td>-3</td><td>1</td><td>-2</td><td>0</td><td>0</td><td>-1</td><td>5</td><td>1</td><td>0</td><td>-1</td><td>-1</td><td>-2</td><td>-2</td><td>-1</td><td>-1</td><td>3</td></tr>
51 <tr><td>R</td><td>-1</td><td>-1</td><td>-3</td><td>-2</td><td>0</td><td>-3</td><td>-2</td><td>0</td><td>-3</td><td>2</td><td>-2</td><td>-1</td><td>0</td><td>-2</td><td>1</td><td>5</td><td>-1</td><td>-1</td><td>-1</td><td>-3</td><td>-3</td><td>-1</td><td>-2</td><td>0</td></tr>
52 <tr><td>S</td><td>1</td><td>0</td><td>-1</td><td>0</td><td>0</td><td>-2</td><td>0</td><td>-1</td><td>-2</td><td>0</td><td>-2</td><td>-1</td><td>1</td><td>-1</td><td>0</td><td>-1</td><td>4</td><td>1</td><td>0</td><td>-2</td><td>-3</td><td>0</td><td>-2</td><td>0</td></tr>
53 <tr><td>T</td><td>0</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-2</td><td>-2</td><td>-2</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>0</td><td>-1</td><td>-1</td><td>-1</td><td>1</td><td>5</td><td>0</td><td>0</td><td>-2</td><td>0</td><td>-2</td><td>-1</td></tr>
54 <tr><td>U</td><td>0</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>0</td><td>0</td><td>-1</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>-1</td></tr>
55 <tr><td>V</td><td>0</td><td>-3</td><td>-1</td><td>-3</td><td>-2</td><td>-1</td><td>-3</td><td>-3</td><td>3</td><td>-2</td><td>1</td><td>1</td><td>-3</td><td>-2</td><td>-2</td><td>-3</td><td>-2</td><td>0</td><td>-1</td><td>4</td><td>-3</td><td>-1</td><td>-1</td><td>-2</td></tr>
56 <tr><td>W</td><td>-3</td><td>-4</td><td>-2</td><td>-4</td><td>-3</td><td>1</td><td>-2</td><td>-2</td><td>-3</td><td>-3</td><td>-2</td><td>-1</td><td>-4</td><td>-4</td><td>-2</td><td>-3</td><td>-3</td><td>-2</td><td>-2</td><td>-3</td><td>11</td><td>-2</td><td>2</td><td>-3</td></tr>
57 <tr><td>X</td><td>0</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>0</td><td>0</td><td>-1</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>-1</td></tr>
58 <tr><td>Y</td><td>-2</td><td>-3</td><td>-2</td><td>-3</td><td>-2</td><td>3</td><td>-3</td><td>2</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>-2</td><td>-3</td><td>-1</td><td>-2</td><td>-2</td><td>-2</td><td>-1</td><td>-1</td><td>2</td><td>-1</td><td>7</td><td>-2</td></tr>
59 <tr><td>Z</td><td>-1</td><td>1</td><td>-3</td><td>1</td><td>4</td><td>-3</td><td>-2</td><td>0</td><td>-3</td><td>1</td><td>-3</td><td>-1</td><td>0</td><td>-1</td><td>3</td><td>0</td><td>0</td><td>-1</td><td>-1</td><td>-2</td><td>-3</td><td>-1</td><td>-2</td><td>4</td></tr>
60 </table>
61 <p><strong><a name="pam250">PAM250</a></strong><br/>
62 <table border="1">
63 <tr><td></td><td>&nbsp;A&nbsp;</td><td>&nbsp;B&nbsp;</td><td>&nbsp;C&nbsp;</td><td>&nbsp;D&nbsp;</td><td>&nbsp;E&nbsp;</td><td>&nbsp;F&nbsp;</td><td>&nbsp;G&nbsp;</td><td>&nbsp;H&nbsp;</td><td>&nbsp;I&nbsp;</td><td>&nbsp;K&nbsp;</td><td>&nbsp;L&nbsp;</td><td>&nbsp;M&nbsp;</td><td>&nbsp;N&nbsp;</td><td>&nbsp;P&nbsp;</td><td>&nbsp;Q&nbsp;</td><td>&nbsp;R&nbsp;</td><td>&nbsp;S&nbsp;</td><td>&nbsp;T&nbsp;</td><td>&nbsp;U&nbsp;</td><td>&nbsp;V&nbsp;</td><td>&nbsp;W&nbsp;</td><td>&nbsp;X&nbsp;</td><td>&nbsp;Y&nbsp;</td><td>&nbsp;Z&nbsp;</td></tr>
64 <tr><td>A</td><td>2</td><td>0</td><td>-2</td><td>0</td><td>0</td><td>-3</td><td>1</td><td>-1</td><td>-1</td><td>-1</td><td>-2</td><td>-1</td><td>0</td><td>1</td><td>0</td><td>-2</td><td>1</td><td>1</td><td>0</td><td>0</td><td>-6</td><td>0</td><td>-3</td><td>0</td></tr>
65 <tr><td>B</td><td>0</td><td>3</td><td>-4</td><td>3</td><td>3</td><td>-4</td><td>0</td><td>1</td><td>-2</td><td>1</td><td>-3</td><td>-2</td><td>2</td><td>-1</td><td>1</td><td>-1</td><td>0</td><td>0</td><td>-1</td><td>-2</td><td>-5</td><td>-1</td><td>-3</td><td>2</td></tr>
66 <tr><td>C</td><td>-2</td><td>-4</td><td>12</td><td>-5</td><td>-5</td><td>-4</td><td>-3</td><td>-3</td><td>-2</td><td>-5</td><td>-6</td><td>-5</td><td>-4</td><td>-3</td><td>-5</td><td>-4</td><td>0</td><td>-2</td><td>-3</td><td>-2</td><td>-8</td><td>-3</td><td>0</td><td>-5</td></tr>
67 <tr><td>D</td><td>0</td><td>3</td><td>-5</td><td>4</td><td>3</td><td>-6</td><td>1</td><td>1</td><td>-2</td><td>0</td><td>-4</td><td>-3</td><td>2</td><td>-1</td><td>2</td><td>-1</td><td>0</td><td>0</td><td>-1</td><td>-2</td><td>-7</td><td>-1</td><td>-4</td><td>3</td></tr>
68 <tr><td>E</td><td>0</td><td>3</td><td>-5</td><td>3</td><td>4</td><td>-5</td><td>0</td><td>1</td><td>-2</td><td>0</td><td>-3</td><td>-2</td><td>1</td><td>-1</td><td>2</td><td>-1</td><td>0</td><td>0</td><td>-1</td><td>-2</td><td>-7</td><td>-1</td><td>-4</td><td>3</td></tr>
69 <tr><td>F</td><td>-3</td><td>-4</td><td>-4</td><td>-6</td><td>-5</td><td>9</td><td>-5</td><td>-2</td><td>1</td><td>-5</td><td>2</td><td>0</td><td>-3</td><td>-5</td><td>-5</td><td>-4</td><td>-3</td><td>-3</td><td>-2</td><td>-1</td><td>0</td><td>-2</td><td>7</td><td>-5</td></tr>
70 <tr><td>G</td><td>1</td><td>0</td><td>-3</td><td>1</td><td>0</td><td>-5</td><td>5</td><td>-2</td><td>-3</td><td>-2</td><td>-4</td><td>-3</td><td>0</td><td>0</td><td>-1</td><td>-3</td><td>1</td><td>0</td><td>-1</td><td>-1</td><td>-7</td><td>-1</td><td>-5</td><td>0</td></tr>
71 <tr><td>H</td><td>-1</td><td>1</td><td>-3</td><td>1</td><td>1</td><td>-2</td><td>-2</td><td>6</td><td>-2</td><td>0</td><td>-2</td><td>-2</td><td>2</td><td>0</td><td>3</td><td>2</td><td>-1</td><td>-1</td><td>-1</td><td>-2</td><td>-3</td><td>-1</td><td>0</td><td>2</td></tr>
72 <tr><td>I</td><td>-1</td><td>-2</td><td>-2</td><td>-2</td><td>-2</td><td>1</td><td>-3</td><td>-2</td><td>5</td><td>-2</td><td>2</td><td>2</td><td>-2</td><td>-2</td><td>-2</td><td>-2</td><td>-1</td><td>0</td><td>-1</td><td>4</td><td>-5</td><td>-1</td><td>-1</td><td>-2</td></tr>
73 <tr><td>K</td><td>-1</td><td>1</td><td>-5</td><td>0</td><td>0</td><td>-5</td><td>-2</td><td>0</td><td>-2</td><td>5</td><td>-3</td><td>0</td><td>1</td><td>-1</td><td>1</td><td>3</td><td>0</td><td>0</td><td>-1</td><td>-2</td><td>-3</td><td>-1</td><td>-4</td><td>0</td></tr>
74 <tr><td>L</td><td>-2</td><td>-3</td><td>-6</td><td>-4</td><td>-3</td><td>2</td><td>-4</td><td>-2</td><td>2</td><td>-3</td><td>6</td><td>4</td><td>-3</td><td>-3</td><td>-2</td><td>-3</td><td>-3</td><td>-2</td><td>-1</td><td>2</td><td>-2</td><td>-1</td><td>-1</td><td>-3</td></tr>
75 <tr><td>M</td><td>-1</td><td>-2</td><td>-5</td><td>-3</td><td>-2</td><td>0</td><td>-3</td><td>-2</td><td>2</td><td>0</td><td>4</td><td>6</td><td>-2</td><td>-2</td><td>-1</td><td>0</td><td>-2</td><td>-1</td><td>-1</td><td>2</td><td>-4</td><td>-1</td><td>-2</td><td>-2</td></tr>
76 <tr><td>N</td><td>0</td><td>2</td><td>-4</td><td>2</td><td>1</td><td>-3</td><td>0</td><td>2</td><td>-2</td><td>1</td><td>-3</td><td>-2</td><td>2</td><td>0</td><td>1</td><td>0</td><td>1</td><td>0</td><td>0</td><td>-2</td><td>-4</td><td>0</td><td>-2</td><td>1</td></tr>
77 <tr><td>P</td><td>1</td><td>-1</td><td>-3</td><td>-1</td><td>-1</td><td>-5</td><td>0</td><td>0</td><td>-2</td><td>-1</td><td>-3</td><td>-2</td><td>0</td><td>6</td><td>0</td><td>0</td><td>1</td><td>0</td><td>-1</td><td>-1</td><td>-6</td><td>-1</td><td>-5</td><td>0</td></tr>
78 <tr><td>Q</td><td>0</td><td>1</td><td>-5</td><td>2</td><td>2</td><td>-5</td><td>-1</td><td>3</td><td>-2</td><td>1</td><td>-2</td><td>-1</td><td>1</td><td>0</td><td>4</td><td>1</td><td>-1</td><td>-1</td><td>-1</td><td>-2</td><td>-5</td><td>-1</td><td>-4</td><td>3</td></tr>
79 <tr><td>R</td><td>-2</td><td>-1</td><td>-4</td><td>-1</td><td>-1</td><td>-4</td><td>-3</td><td>2</td><td>-2</td><td>3</td><td>-3</td><td>0</td><td>0</td><td>0</td><td>1</td><td>6</td><td>0</td><td>-1</td><td>-1</td><td>-2</td><td>2</td><td>-1</td><td>-4</td><td>0</td></tr>
80 <tr><td>S</td><td>1</td><td>0</td><td>0</td><td>0</td><td>0</td><td>-3</td><td>1</td><td>-1</td><td>-1</td><td>0</td><td>-3</td><td>-2</td><td>1</td><td>1</td><td>-1</td><td>0</td><td>2</td><td>1</td><td>0</td><td>-1</td><td>-2</td><td>0</td><td>-3</td><td>0</td></tr>
81 <tr><td>T</td><td>1</td><td>0</td><td>-2</td><td>0</td><td>0</td><td>-3</td><td>0</td><td>-1</td><td>0</td><td>0</td><td>-2</td><td>-1</td><td>0</td><td>0</td><td>-1</td><td>-1</td><td>1</td><td>3</td><td>0</td><td>0</td><td>-5</td><td>0</td><td>-3</td><td>-1</td></tr>
82 <tr><td>U</td><td>0</td><td>-1</td><td>-3</td><td>-1</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>0</td><td>-1</td><td>-1</td><td>-1</td><td>0</td><td>0</td><td>-1</td><td>-1</td><td>-4</td><td>-1</td><td>-2</td><td>-1</td></tr>
83 <tr><td>V</td><td>0</td><td>-2</td><td>-2</td><td>-2</td><td>-2</td><td>-1</td><td>-1</td><td>-2</td><td>4</td><td>-2</td><td>2</td><td>2</td><td>-2</td><td>-1</td><td>-2</td><td>-2</td><td>-1</td><td>0</td><td>-1</td><td>4</td><td>-6</td><td>-1</td><td>-2</td><td>-2</td></tr>
84 <tr><td>W</td><td>-6</td><td>-5</td><td>-8</td><td>-7</td><td>-7</td><td>0</td><td>-7</td><td>-3</td><td>-5</td><td>-3</td><td>-2</td><td>-4</td><td>-4</td><td>-6</td><td>-5</td><td>2</td><td>-2</td><td>-5</td><td>-4</td><td>-6</td><td>17</td><td>-4</td><td>0</td><td>-6</td></tr>
85 <tr><td>X</td><td>0</td><td>-1</td><td>-3</td><td>-1</td><td>-1</td><td>-2</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>-1</td><td>0</td><td>-1</td><td>-1</td><td>-1</td><td>0</td><td>0</td><td>-1</td><td>-1</td><td>-4</td><td>-1</td><td>-2</td><td>-1</td></tr>
86 <tr><td>Y</td><td>-3</td><td>-3</td><td>0</td><td>-4</td><td>-4</td><td>7</td><td>-5</td><td>0</td><td>-1</td><td>-4</td><td>-1</td><td>-2</td><td>-2</td><td>-5</td><td>-4</td><td>-4</td><td>-3</td><td>-3</td><td>-2</td><td>-2</td><td>0</td><td>-2</td><td>10</td><td>-4</td></tr>
87 <tr><td>Z</td><td>0</td><td>2</td><td>-5</td><td>3</td><td>3</td><td>-5</td><td>0</td><td>2</td><td>-2</td><td>0</td><td>-3</td><td>-2</td><td>1</td><td>0</td><td>3</td><td>0</td><td>0</td><td>-1</td><td>-1</td><td>-2</td><td>-6</td><td>-1</td><td>-4</td><td>3</td></tr>
88 </table>
89
90 <p><strong><a name="simplenucleotide">Simple Nucleotide Substitution</a></strong></br>
91 This is an ad-hoc matrix which, in addition to penalising mutations between the common nucleotides (ACGT), includes T/U equivalence in order to allow both DNA and/or RNA.
92 In addition, it encodes weak equivalence between R and Y with AG and CTU, respectively, and N is allowed to match any other base weakly. This matrix also includes I (Inosine) and X (Xanthine), but encodes them to weakly match any of (ACGTU), and unfavourably match each other.
93 <table border="1">
94 <tr><td></td><td>&nbsp;A&nbsp;</td><td>&nbsp;C&nbsp;</td><td>&nbsp;G&nbsp;</td><td>&nbsp;I&nbsp;</td><td>&nbsp;N&nbsp;</td><td>&nbsp;R&nbsp;</td><td>&nbsp;T&nbsp;</td><td>&nbsp;U&nbsp;</td><td>&nbsp;X&nbsp;</td><td>&nbsp;Y&nbsp;</td></tr>
95 <tr><td>A</td><td>10</td><td>-8</td><td>-8</td><td>1</td><td>1</td><td>1</td><td>-8</td><td>-8</td><td>1</td><td>-8</td></tr>
96 <tr><td>C</td><td>-8</td><td>10</td><td>-8</td><td>1</td><td>1</td><td>-8</td><td>-8</td><td>-8</td><td>1</td><td>1</td></tr>
97 <tr><td>G</td><td>-8</td><td>-8</td><td>10</td><td>1</td><td>1</td><td>1</td><td>-8</td><td>-8</td><td>1</td><td>-8</td></tr>
98 <tr><td>I</td><td>1</td><td>1</td><td>1</td><td>10</td><td>1</td><td>0</td><td>1</td><td>1</td><td>0</td><td>0</td></tr>
99 <tr><td>N</td><td>1</td><td>1</td><td>1</td><td>1</td><td>10</td><td>1</td><td>1</td><td>1</td><td>1</td><td>1</td></tr>
100 <tr><td>R</td><td>1</td><td>-8</td><td>1</td><td>0</td><td>1</td><td>10</td><td>-8</td><td>-8</td><td>0</td><td>-8</td></tr>
101 <tr><td>T</td><td>-8</td><td>-8</td><td>-8</td><td>1</td><td>1</td><td>-8</td><td>10</td><td>10</td><td>1</td><td>1</td></tr>
102 <tr><td>U</td><td>-8</td><td>-8</td><td>-8</td><td>1</td><td>1</td><td>-8</td><td>10</td><td>10</td><td>1</td><td>1</td></tr>
103 <tr><td>X</td><td>1</td><td>1</td><td>1</td><td>0</td><td>1</td><td>0</td><td>1</td><td>1</td><td>10</td><td>0</td></tr>
104 <tr><td>Y</td><td>-8</td><td>1</td><td>-8</td><td>0</td><td>1</td><td>-8</td><td>1</td><td>1</td><td>0</td><td>10</td></tr>
105 </table>
106 <strong><em>This nucleotide matrix was introduced in
107                                 Jalview 2.8. If you'd like to improve it - please take a look at <a
108                                 href="http://issues.jalview.org/browse/JAL-1027">Issue JAL-1027
109                                         - introduce a nucleotide substitution matrix that supports RNA/DNA
110                                         and ambiguity codes</a>
111                 </em></strong>
112                 </body>
113 </html>