Any process that activates or increases the frequency, rate, or extent of antigen processing and presentation of peptide antigen via MHC class I.
Synonyms:
exact_synonym:
positive regulation of peptide antigen processing and presentation via MHC class I; up-regulation of antigen processing and presentation of peptide antigen via MHC class I; upregulation of antigen processing and presentation of peptide antigen via MHC class I
narrow_synonym:
activation of antigen processing and presentation of peptide antigen via MHC class I; stimulation of antigen processing and presentation of peptide antigen via MHC class I