Glycerophosphodiester phosphodiesterase domain
IPR030395
Definition
This entry represents the GP-PDE domain. The glycerophosphodiester phosphodiesterases (GD-PDEs) were initially characterised in bacteria, where they have functional roles for production of metabolic carbon and phosphate sources from glycerophosphodiesters and in adherence to and degradation of mammalian host-cell membranes. Mammalian GP- GDEs have been identified more recently and shown to be implicated in several physiological functions. GD-PDEs are involved in glycerol metabolism and catalyze the reaction of glycerophosphodiester and water to alcohol and sn-glycerol-3-phosphate. They display broad specificity for glycerophosphodiesters, such as glycerophosphocholine, glycerophosphoethanolamine, glycerophosphoglycerol and bis(glycerophosphoglycerol). The GP-PDE domain adopts the ubiquitous triosephosphate isomerase (TIM) barrel α/β fold. The TIM barrel is comprised of an eight-stranded parallel β-sheet barrel surrounded by eight α-helices. There is a small insertion to the conventional TIM barrel structure referred to as the GDPD-insertion (GDPD-I). The GDPD-I is comprised of β strands, α-helices (H3 and H4), and 3/10 helices. Although the TIM barrel and a small insertion are unique for GP-PDE family, there are subtle differences in size and topology of each domain [[cite:PMID:15162496], [cite:PMID:16909422]]. Some proteins known to contain a GP-PDE domain are listed below: Bacterial glycerophosphoryl diester phosphodiesterase GlpQ (EC 3.1.4.46). Bacterial gylcerophosphoryl diester phosphodiesterase UgpQ (EC 3.1.4.46). Mammalian glycerophosphodiester phosphodiesterase 1 (GDE1) (EC 3.1.4.44) (or MMIR16) PMID:12576545, an integral membrane glycoprotein that interacts with regulator of G protein signaling proteins. It hydrolyzes glycerophosphoinositols (GPIs) producing inositol and glycerol 3-phosphate. Mammalian glycerophosphodiester phosphodiesterase domain-containing protein 5 (GDPD5) (EC 3.1.-.-) (or GDE2) PMID:15276213. Mammalian glycerophosphoinositol inositolphosphodiesterase GDPD2 (or GDE3) (EC 3.1.4.43) PMID:12933806, up-regulated during osteoblast differentiation and can affect cell morpholgy. It hydrolyzes glycerophosphoinositol (GroPIns), producing inositol 1-phosphate and glycerol. Mammalian glycerophosphodiester phosphodiesterase domain-containing protein 1 (GDPD1) (EC 3.1.-.-) (or GDE4) PMID:18991142. Mammalian glycerophosphocholine phosphodiesterase GPCPD1 (EC 3.1.4.2) (or GDE5), selectively hydrolyzes glycerophosphocholine (GroPCho) and controls skeletal muscle development PMID:20576599. Mammalian glycerophosphodiester phosphodiesterase domain-containing protein 4 (GDPD4) (EC 3.1.-.-) (or GDE6) PMID:15276213.
7 human proteins with this domain
Each is a reviewed human protein in the Seroatlas serome and a potential autoantibody target; this domain groups them into one antibody-relevant category. Every entry links to its own record.
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