PEX19

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PEX19

A gene on chromosome 1q23.2 that encodes a peroxin involved in early peroxisomal biogenesis, which acts both as a cytosolic chaperone and as an import receptor for peroxisomal membrane proteins.
  
Molecular pathology
PEX19 mutations cause peroxisome biogenesis spectrum disorder, complementation type 14 and a clinical form of Zellweger syndrome.
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The in situ reactions among PA6, PMPI and PPE during melt mixing may form PA6-co-PMPI-co-PPE copolymer that is soluble neither in toluene nor in formic acid.
Figure 1(c) shows that the NCO stretching of PMPI gives a broad and intense absorption band at 2270 [cm.
Kinetically this small secondary amine molecule will react with PMPI faster if it is not vaporized during melt blending.
At 1 phr PMPI concentration, the functional numbers of -NCO from PMPl is about 61-71% of the total functional groups from PA6 + PPE + secondary amine.
In addition to the expected molecular weight increase, the interfacial friction caused by in situ-formed copolymer anchoring along the interface may also partially contribute to the observed higher viscosity of these PMPI compatibilized blends.
6 where the effect of PMPI compatibilizer on the apparent viscosity of this PA6-rich blend system is quite significant.
The general trend indicates that the dispersed PPE particle size decreases with the increase of the PMPI content.
The unnotched impact strength at room temperature of the PA6/PPE blend increases with the increase of PMPI compatibilizer quantity.