XmlmmCIF equivalent: exptl_crystal_grow_comp Data items in the EXPTL_CRYSTAL_GROW_COMP category record details about the components of the solutions that were 'mixed' (by whatever means) to produce the crystal. In general, solution 1 is the solution that contains the molecule to be crystallized and solution 2 is the solution that contains the precipitant. However, the number of solutions required to describe the crystallization protocol is not limited to 2. Details of the crystallization protocol should be described in EXPTL_CRYSTAL_GROW_DETAILS, using the solutions described in EXPTL_CRYSTAL_GROW_COMP. XmlmmCIF equivalent: exptl_crystal_grow_comp/conc The concentration of the solution component. XmlmmCIF equivalent: exptl_crystal_grow_comp/details A description of any special aspects of the solution component. When the solution component is the one that contains the macromolecule, this could be the specification of the buffer in which the macromolecule was stored. When the solution component is a buffer component, this could be the methods (or formula) used to achieve a desired pH. XmlmmCIF equivalent: exptl_crystal_grow_comp/name A common name for the component of the solution. XmlmmCIF equivalent: exptl_crystal_grow_comp/sol_id An identifier for the solution to which the given solution component belongs. XmlmmCIF equivalent: exptl_crystal_grow_comp/volume The volume of the solution component. XmlmmCIF equivalent: exptl_crystal_grow_comp/id The value of _exptl_crystal_grow_comp.id must uniquely identify each item in the EXPTL_CRYSTAL_GROW_COMP list. Note that this item need not be a number; it can be any unique identifier. XmlmmCIF equivalent: exptl_crystal_grow_comp/crystal_id This data item is a pointer to _exptl_crystal.id in the EXPTL_CRYSTAL category.