loop_
_pdbx_nonpoly_feature.ordinal
_pdbx_nonpoly_feature.label_asym_id
_pdbx_nonpoly_feature.label_seq_id
_pdbx_nonpoly_feature.label_comp_id
_pdbx_nonpoly_feature.auth_asym_id
_pdbx_nonpoly_feature.auth_seq_id
_pdbx_nonpoly_feature.auth_comp_id
_pdbx_nonpoly_feature.PDB_ins_code
_pdbx_nonpoly_feature.type
_pdbx_nonpoly_feature.value
_pdbx_nonpoly_feature.provenance
1 B . SF4 A 86 SF4 ? 'Group charge' 2 Author