UniProtKB REST API

Search and retrieve protein entries from UniProtKB, which integrates Swiss-Prot (manually reviewed) and TrEMBL (computationally annotated) databases. Supports full-text and field-specific queries, retrieval by accession, and streaming of large result sets. Returns rich protein records including sequences, functional annotations, cross-references, taxonomic lineage, subcellular location, disease associations, and literature citations.