| 摘要 |
A novel class of cationic peptides having antimicrobial activity is disclosed. These peptides can be encompassed by the formulas: <tables id="TABLE-US-00001" num="00001"> <table frame="none" colsep="0" rowsep="0" tabstyle="monospace"> <tgroup align="left" colsep="0" rowsep="0" cols="2"> <colspec colname="1" colwidth="154pt" align="left"/> <colspec colname="2" colwidth="63pt" align="left"/> <TBODY VALIGN="TOP"> <ROW> <ENTRY>X<SUB>1</SUB>X<SUB>1</SUB>PX<SUB>2</SUB>X<SUB>3</SUB>X<SUB>2</SUB>P(X<SUB>2</SUB>X<SUB>2</SUB>P)<SUB>n</SUB>X<SUB>2</SUB>X<SUB>3</SUB>(X<SUB>5</SUB>)<SUB>0</SUB>;</ENTRY> <ENTRY>(SEQ ID NO:23)</ENTRY> </ROW> <ROW> <ENTRY> </ENTRY> </ROW> <ROW> <ENTRY>X<SUB>1</SUB>X<SUB>1</SUB>PX<SUB>2</SUB>X<SUB>3</SUB>X<SUB>4</SUB>(X<SUB>5</SUB>)<SUB>r</SUB>PX<SUB>2</SUB>X<SUB>3</SUB>X<SUB>3</SUB>;</ENTRY> <ENTRY>(SEQ ID NO:24)</ENTRY> </ROW> <ROW> <ENTRY> </ENTRY> </ROW> <ROW> <ENTRY>X<SUB>1</SUB>X<SUB>1</SUB>X<SUB>3</SUB>(PW)<SUB>u</SUB>X<SUB>3</SUB>X<SUB>2</SUB>X<SUB>5</SUB>X<SUB>2</SUB>X<SUB>2</SUB>X<SUB>5</SUB>X<SUB>2</SUB>(X<SUB>5</SUB>)<SUB>0</SUB>; and</ENTRY> <ENTRY>(SEQ ID NO:25)</ENTRY> </ROW> <ROW> <ENTRY> </ENTRY> </ROW> <ROW> <ENTRY>X<SUB>1</SUB>X<SUB>1</SUB>X<SUB>3</SUB>X<SUB>3</SUB>X<SUB>2</SUB>P(X<SUB>2</SUB>X<SUB>2</SUB>P)<SUB>n</SUB>X<SUB>2</SUB>(X<SUB>5</SUB>)<SUB>m</SUB>;</ENTRY> <ENTRY>(SEQ ID NO:26)</ENTRY> </ROW> </TBODY> </TGROUP> </TABLE> </TABLES> wherein: m is 1 to 5; n is 1 or 2; o is 2 to 5; r is 0 to 8; u is 0 or 1; X<SUB>1 </SUB>is Isoleucine, Leucine, Valine, Phenylalanine, Tyrosine, Tryptophan or Methionine; X<SUB>2 </SUB>represents Tryptophan or Phenylalanine X<SUB>3 </SUB>represents Arginine or Lysine; X<SUB>4 </SUB>represents Tryptophan or Lysine; and X<SUB>5 </SUB>represents Phenylalanine, Tryptophan, Arginine, Lysine, or Proline. The invention also provides a method of producing a cationic peptide variant having antimicrobial activity.
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