Haptoglobin

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** Haptoglobin (406 aa, ~45 kDa) is encoded by the human HP gene. This protein plays a role in tight junction disassembly, intestinal permeability, heme iron recycling, antimicrobial activity and the regulation of hydrogen peroxide catabolism.

**Synonyms:** - HP - Zonulin