#NEXUS

BEGIN TAXA;
	dimensions ntax=4;
	taxlabels A B C D;  
END;

BEGIN CHARACTERS;
	title protein;
	dimensions nchar=11;
	format
		datatype=protein
		missing=?
		gap=-
		;
	
	matrix
		A	-MQVADISL-?
		B	-------MA--
		C	-MG----FS--
		D	-MG--DVEKGQ
		;
END;

BEGIN TREES;
        title tb_1;
	tree 'basic bush' = ((A:1,B:1):1,(C:1,D:1):1);
END;