HEADSC 1o55 SEQCRD A A DA A 1 2 C C 0 SEQCRD A A DA --- 2 - - - 0 SEQCRD A A DA --- 3 - - - 0 SEQCRD B A DA A 1 5 C C 0 SEQCRD B A DA --- 2 - - - 0 SEQCRD B A DA --- 3 - - - 0 PARAME method XRAY PARAME resolution 1.040 PARAME R-factor 0.144 PARAME FreeR-factor NA