loop_
_pdbx_feature_assembly.id
_pdbx_feature_assembly.assembly_id
_pdbx_feature_assembly.feature_name
_pdbx_feature_assembly.feature
_pdbx_feature_assembly.feature_type
_pdbx_feature_assembly.feature_assigned_by
_pdbx_feature_assembly.feature_citation_id
1 b1 'biological process' 'nitrogen metabolism' value GO GO