Zeolites in the strict sense are highly porous crystalline aluminosilicatesthat comprise tetrahedrally-connected three dimensional frameworks andextra-framework charge balancing cations. The frameworks containpores that are able to take in molecules of up to 1 nm in size (dependingon the structure type) and the pore geometry can include cages and/orchannels, and be one-, two...

Many ligand-discovery stories tell of the use of structures of protein-ligand complexes, but the contribution of structural chemistry is such a core part of finding and improving ligands that it is often overlooked. More than 800 000 crystal structures are available to the community through the Cambridge Structural Database (CSD). Individually, these structures can be of tremendous value and th...

A detailed historical review is presented and the difficulties arising when defining such a funda mental concept as structural type in crystal chemistry are analyzed. Particular attention is paid to the genetic relationship between different structural types and to the criteria of choosing between them. Many other terms and concepts of modern crystal chemistry defined for completeness. PACS num...

RNA methyltransferases (RNMTs) play important roles in RNA stability, splicing, and epigenetic mechanisms. They constitute a promising target class that is underexplored by the medicinal chemistry community. Information of relevance to drug design can be extracted from the rich structural coverage of human RNMTs. In this work, the structural chemistry of this protein family is analyzed in depth...

Key Laboratories of Bioorganic Chemistry and Molecular Engineering and of Polymer Chemistry and Physics of Ministry of Education, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry, Peking UniVersity, Beijing 100871, China, and Institute of Polymer Optoelectronic Materials and DeVices, South China UniVersity of Technology, and Key Lab of Specially...

The crystal structures of the [A(1)(2)][A(2)(3)](BO(4))(3)X apatites and the related compounds [A(1)(2)][A(2)(3)](BO(5))(3)X and [A(1)(2)][A(2)(3)](BO(3))(3)X are collated and reviewed. The structural aristotype for this family is Mn(5)Si(3) (D8(8) type, P6(3)/mcm symmetry), whose cation array approximates that of all derivatives and from which related structures arise through the systematic in...