Shirley Lee, a student in department
          of Life Sciences, was bitten by a snake
          in the backyard of life science
          building. She was so angry! Thus, she
          killed the snake and purified several
          toxins from its venoms. She sequenced
          one of the toxin, got this sequence: 

          1 L K C N K L V P L F Y K T C P A G K N I C
          Y K M F M V A T P

          31 K L P V K R G C I D V C P K S S L L V R Y
          V C C N T D K C N
           
            <A HREF="hw5.1 "><FONT SIZE="+1"FACE="Courier">
          (1) Is this a new toxin? Please help him to identify this toxin. </a></FONT> 
 
        
            <A HREF=" hw5.2 "><FONT SIZE="+1"FACE="Courier">
          (2) Can you find proteins that share sequence homology with this toxin? Show                                                     them in multiple alignment form.</a></FONT> 
 

            <A HREF=" hw5.3 "><FONT SIZE="+1"FACE="Courier">                                                                                      (3) Please predict its secondary structure.</a></FONT> 
 
            <A HREF=" hw5.4"><FONT SIZE="+1"FACE="Courier">                                                            (4) Please show its charge distribution.   </a></FONT>