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LTB4R

Function

Receptor for extracellular ATP > UTP and ADP. The activity of this receptor is mediated by G proteins which activate a phosphatidylinositol-calcium second messenger system. May be the cardiac P2Y receptor involved in the regulation of cardiac muscle contraction through modulation of L-type calcium currents. Is a receptor for leukotriene B4, a potent chemoattractant involved in inflammation and immune response.

Post-translational modifications

Phosphorylated by GRK6 upon leukotriene B4 binding; which promotes desensitization.

Sequence similarities

Belongs to the G-protein coupled receptor 1 family.

Tissue specificity

Expressed at highest levels in heart, skeletal muscle and at lower levels in brain and liver. High level of expression in lymphoid tissues.

Cellular localization

  • Cell membrane
  • Multi-pass membrane protein

Alternative names

  • Leukotriene B4 receptor 1
  • LTB4-R 1
  • LTB4-R1
  • Chemoattractant receptor-like 1
  • G-protein coupled receptor 16
  • P2Y purinoceptor 7
  • P2Y7
  • BLTR
  • CMKRL1
  • GPR16
  • P2RY7
  • BLT1
  • LTB4R
  • BLT

Target type

Proteins

Molecular weight

37557Da