Rossmann-like alpha/beta/alpha sandwich fold <p>This entry represents domains related by a common ancestor that have a Rossmann-like, 3-layer, alpha/beta/alpha sandwich fold, as found in the protein families listed below:</p><ul><li>Nucleotidylyl transferases (<db_xref db="EC" dbkey="2.7.7"/>) such as cytidylyltransferases [<cite idref="PUB00034486"/>], adenylyltransferases [<cite idref="PUB00022325"/>].</li><li>Class I aminoacyl-tRNA synthetases (catalytic domain), such as tyrosyl-tRNA synthetase (<db_xref db="EC" dbkey="6.1.1.1"/>) and glutaminyl-tRNA synthetase (<db_xref db="EC" dbkey="6.1.1.18"/>) [<cite idref="PUB00025297"/>].</li><li>Pantothenate synthetases (<db_xref db="EC" dbkey="6.3.2.1"/>) [<cite idref="PUB00034487"/>].</li><li>ATP sulphurylase (central domain) [<cite idref="PUB00034488"/>]</li><li>N-type ATP pyrophosphatases, such as beta-lactam synthetase (<db_xref db="EC" dbkey="6.3.3.4"/>) and GMP synthase (<db_xref db="EC" dbkey="6.3.5.2"/>) [<cite idref="PUB00003933"/>].</li><li>PP-loop ATPases such as the cell cycle protein MesJ (N-terminal domain) [<cite idref="PUB00034489"/>].</li><li>Phosphoadenylyl sulphate (PAPS) reductase [<cite idref="PUB00005294"/>]</li><li>Electron transfer flavoprotein (ETFP) subunits, such as the N-terminal domains of the alpha and beta subunits [<cite idref="PUB00004879"/>].</li><li>Universal stress protein A (UspA) [<cite idref="PUB00034490"/>].</li><li>Cryptochrome and DNA photolyase [<cite idref="PUB00034491"/>].</li></ul>