Peroxisome Proliferator-activated Receptor - Nomenclature and Tissue Distribution

Nomenclature and Tissue Distribution

Peroxisome proliferator-activated receptor alpha
Identifiers
Symbol PPARA
Alt. symbols PPAR
Entrez 5465
HUGO 9232
OMIM 170998
RefSeq NM_001001928
UniProt Q07869
Other data
Locus Chr. 22 q12-q13.1
Peroxisome proliferator-activated receptor gamma
Identifiers
Symbol PPARG
Entrez 5468
HUGO 9236
OMIM 601487
RefSeq NM_005037
UniProt P37231
Other data
Locus Chr. 3 p25
Peroxisome proliferator-activated receptor delta
Identifiers
Symbol PPARD
Entrez 5467
HUGO 9235
OMIM 600409
RefSeq NM_006238
UniProt Q03181
Other data
Locus Chr. 6 p21.2

Three types of PPARs have been identified: alpha, gamma, and delta (beta):

  • α (alpha) - expressed in liver, kidney, heart, muscle, adipose tissue, and others
  • β/δ (beta/delta) - expressed in many tissues but markedly in brain, adipose tissue, and skin
  • γ (gamma) - although transcribed by the same gene, this PPAR through alternative splicing is expressed in three forms:
    • γ1 - expressed in virtually all tissues, including heart, muscle, colon, kidney, pancreas, and spleen
    • γ2 - expressed mainly in adipose tissue (30 amino acids longer)
    • γ3 - expressed in macrophages, large intestine, white adipose tissue.

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