P21 (disambiguation)

p21 is a cyclin-dependent kinase inhibitor.

P21 or P-21 may also refer to:

Proteins

  • p21/ras, part of the RAt Sarcoma family of proteins
  • Transforming protein p21, encoded by the HRAS gene in humans

Vessels

  • ARA King (P-21), a minelayer and patrol ship of the Argentine Navy
  • HMS Oberon (P21), a submarine of the Royal Navy
  • LÉ Emer (P21), a patrol vessel of the Irish Navy
  • Maltese patrol boat P21, of the Armed Forces of Malta

Other uses

  • Curtiss XP-21, an American experimental fighter aircraft
  • P21 road (Ukraine)
  • Papyrus 21, a biblical manuscript
  • Yao language
  • Partnership for 21st Century Skills; see 21st century skills
  • Prophet 21, Distribution Software for businesses published by Epicor


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