## RNA structural dataset
# PDB data and relative statistics
# Based on PDB files dovnloades in
# November 2006 

1) DOWNLOADED DATA Download data form www.pdb.org
	PDB with RNA         1101               RNA_Nov06.txt
	    	X-RAY     706
	    	Other     395
		RNA chains           2179       RNACHAIN_Nov06.txt

2) FILTER REDUNDANCY >95% Use cd-hit to remove redundancy
	RNA PDB		      529	   	RNA_Nov06_NR95.txt
            	X-RAY     300
            	Other     229
		RNA chain nr95        744    	RNACHAIN_Nov06_NR95.txt 

3) SET SEQUENCE RANGE (20<=LEN<310) remove all chains with length below 20 and larger than 310
	RNA PDB               291           	RNA_Nov06_SET.txt	 
	  	X-RAY       151
	 	Others       140
		nr95 RNA 20<=len<310  313      RNACHAIN_Nov06_SET.txt

4) SELECTED HIGH RESULUTION DATA (REOLUTION<4.0 ANG) AND ABOUT SAME NUMBER OF P AND C3
	RNA PDB                52      		RNA_Nov06_SELECTED.txt
	RNA chain      	       54 		RNACHAIN_Nov06_SELECTED.txt
