Research on enzyme function at the atomic level has advanced significantly, primarily through techniques like x-ray crystallography, NMR spectroscopy, and electron microscopy, which provide detailed three-dimensional structures of enzymes. These structural insights help identify the specific regions involved in catalysis and regulatory mechanisms. Additionally, computational methods such as molecular dynamics simulations are employed to further explore enzyme catalysis. Biochemistry textbooks typically cover these topics, and the Protein Data Bank serves as a valuable resource, offering access to atomic resolution structures and informative features about various enzymes and their functions.