HEADSC 1r3z
SEQCRD    A G DG  GUA     1      1 C C 0
SEQCRD    A X 5CM CYM     2      2 C C 0
SEQCRD    A G DG  GUA     3      3 C C 0
SEQCRD    A X 5CM CYM     4      4 C C 0
SEQCRD    A G DG  GUA     5      5 C C 0
SEQCRD    A C DC  CYT     6      6 C C 0
SEQCRD    A G DG  GUA     7      7 C C 0
SEQCRD    A C DC  CYT     8      8 C C 0
PARAME method XRAY
PARAME resolution 1.7
PARAME R-factor 0.193
PARAME FreeR-factor 0.203