PDB ProtVista: A reusable and open-source sequence feature viewer

Summary The PDB ProtVista is a reusable and customisable sequence feature viewer that provides intuitive and detailed 2D visualisation of residue-level annotations while also supporting interactive communication with 3D viewers. The Protein Data Bank in Europe (PDBe) team develops and maintains PDB ProtVista. Several web services use it to display structural and functional annotations such as macromolecular interaction interfaces, intrinsic disorder predictions, sequence variants, and sequence conservation. Availability and Implementation The PDB ProtVista is a native JavaScript (ES6) application that is freely available from . The above URL also provides extensive documentation and step-by-step user guides on integrating PDB ProtVista with existing web applications and 3D molecular viewers. It also offers an example of how to display custom data of the user and functional annotations for PDB and UniProt entries powered by a rich set of PDBe API endpoints. ### Competing Interest Statement The authors have declared no competing interest.