XmlmmCIF equivalent: database_PDB_tvect The DATABASE_PDB_TVECT category provides placeholders for the TVECT matrices and vectors used by the Protein Data Bank (PDB). These data items are included only for consistency with older PDB format files. They should appear in a data block only if that data block was created by reformatting a PDB format file. XmlmmCIF equivalent: database_PDB_tvect/details A description of special aspects of this TVECT. XmlmmCIF equivalent: database_PDB_tvect/vector1 The [1] element of the PDB TVECT vector. XmlmmCIF equivalent: database_PDB_tvect/vector2 The [2] element of the PDB TVECT vector. XmlmmCIF equivalent: database_PDB_tvect/vector3 The [3] element of the PDB TVECT vector. XmlmmCIF equivalent: database_PDB_tvect/id The value of _database_PDB_tvect.id must uniquely identify a record in the DATABASE_PDB_TVECT list. Note that this item need not be a number; it can be any unique identifier.