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XB-ART-45254
Gene Expr Patterns August 1, 2012; 12 (7-8): 219-27.

Identification and expression analysis of GPAT family genes during early development of Xenopus laevis.

Bertolesi GE , Iannattone S , Johnston J , Zaremberg V , McFarlane S .


Abstract
Production of lysophosphatidic acid (LPA) is the first step in the de novo pathway for glycerolipid biosynthesis, which is mainly catalyzed by the glycerol-3-phosphate acyltransferases (GPATs; EC2.3.1.15). DHAPAT (EC2.3.1.42) also contributes in a minor way, using dihydroxyacetone phosphate as substrate. Final products and intermediates of the glycerolipid synthesis pathway are the main structural components of cellular membranes, and provide signalling molecules that regulate diverse biological processes, including cell proliferation, differentiation and growth. Here we identified the four orthologs of the mammalian GPATs (1-4) and DHAPAT in Xenopus, including a novel, short variant of GPAT2, and analyzed their expression pattern during embryonic development. Xenopus GPAT1/2 localized to mitochondria, while GPAT3/4 associated with the endoplasmic reticulum. All are similarly expressed in the early embryonic nervous system. A more tissue specific pattern emerges during organogenesis, including liver expression for GPAT1/4, and testis expression for GPAT2. All acyltransferases were expressed in kidney, though GPAT3 was excluded from the pronephric ducts. Our results suggest important roles of GPATs and DHAPAT during early organogenesis.

PubMed ID: 22564474
Article link: Gene Expr Patterns

Genes referenced: agpat1 agpat2 agpat3 agpat4 ambp canx eef1a1 gnpat gpam gpat2 gpat3 gpat4 myc odc1 tbx2 tbx3 vax1 vax2


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