To cite UniprotR in publications use:

  Soudy, M., Anwar, A.M., Ahmed, E.A., Osama, A., Ezzeldin, S.,
  Mahgoub, S. and Magdeldin, S., 2020. UniprotR: Retrieving and
  visualizing protein sequence and functional information from
  Universal Protein Resource (UniProt knowledgebase). Journal of
  Proteomics, 213, p.103613.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {UniprotR: Retrieving and visualizing protein sequence and functional information from Universal Protein Resource (UniProt knowledgebase)},
    author = {Mohamed Soudy and Ali Mostafa Anwar and Eman Ali Ahmed and Aya Osama and Shahd Ezzeldin and Sebaey Mahgou and Sameh Magdeldin},
    journal = {Journal of Proteomics},
    volume = {213},
    pages = {103613},
    year = {2020},
    issn = {1874-3919},
    doi = {10.1016/j.jprot.2019.103613},
    url = {https://www.sciencedirect.com/science/article/pii/S1874391919303859},
  }