HEADSC 4fs6 SEQCRD A C DC CYT 1 1 C C 0 SEQCRD A G DG GUA 2 2 C C 0 SEQCRD A C DC CYT 3 3 C C 0 SEQCRD A G DG GUA 4 4 C C 0 SEQCRD A C DC CYT 5 5 C C 0 SEQCRD A G DG GUA 6 6 C C 0 PARAME method XRAY PARAME resolution 1.300 PARAME R-factor 0.1951 PARAME FreeR-factor 0.2300