Mutations in TRAPPC11 are associated with a congenital disorder of glycosylation.

Abstract

Congenital disorders of glycosylation (CDG) are a heterogeneous and rapidly growing group of diseases caused by abnormal glycosylation of proteins and/or lipids. Mutations in genes involved in the homeostasis of the endoplasmic reticulum (ER), the Golgi apparatus (GA), and the vesicular trafficking from the ER to the ER-Golgi intermediate compartment (ERGIC) have been found to be associated with CDG. Here, we report a patient with defects in both N- and O-glycosylation combined with a delayed vesicular transport in the GA due to mutations in TRAPPC11, a subunit of the TRAPPIII complex. TRAPPIII is implicated in the anterograde transport from the ER to the ERGIC as well as in the vesicle export from the GA. This report expands the spectrum of genetic alterations associated with CDG, providing new insights for the diagnosis and the understanding of the physiopathological mechanisms underlying glycosylation disorders.

• Authors: Leslie Matalonga, Miren Bravo, Carla Serra-Peinado, Elisabeth García-Pelegrí, Olatz Ugarteburu, Silvia Vidal, Maria Llambrich, Ester Quintana, Pedro Fuster-Jorge, Maria Nieves Gonzalez-Bravo, Sergi Beltran, Joaquin Dopazo, Francisco Garcia-Garcia, François Foulquier, Gert Matthijs, Philippa Mills, Antonia Ribes, Gustavo Egea, Paz Briones, Frederic Tort, Marisa Girós
• Journal: Human mutation (Hum Mutat) Vol. 38 Issue 2 Pg. 148-151 (02 2017) ISSN: 1098-1004 [Electronic] United States
• PMID: 27862579 (Publication Type: Case Reports, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © 2016 WILEY PERIODICALS, INC.

Chemical References

• TRAPPC11 protein, human
• Vesicular Transport Proteins

Topics

• Abnormalities, Multiple (diagnosis, genetics)
• Alleles
• Amino Acid Substitution
• Brain (abnormalities, diagnostic imaging)
• Congenital Disorders of Glycosylation (diagnosis, genetics)
• Genotype
• Humans
• Magnetic Resonance Imaging (methods)
• Male
• Mutation
• Phenotype
• Vesicular Transport Proteins (genetics)
• Whole Genome Sequencing