The process in which an antigen-presenting cell expresses a peptide antigen of endogenous origin on its cell surface in association with an MHC protein complex. The peptide is typically a fragment of a larger endogenous protein which has been degraded within the cell. (Gene Ontology, GO_0002483)
22 genes participating in the antigen processing and presentation of endogenous peptide antigen biological process from the curated GO Biological Process Annotations 2025 dataset.