Biochem diseases and mutations Flashcards
Adenosine deaminase deficiency
Adenosine deaminase (duh)
Lesch-Nyhan Syndrome
Absent HGPRT
Xeroderma pigmentosum
Defective ntide excision repair
HNPCC
Defective mismatch repair
Ataxia telangiectasia
Defective nonhomologous end joining
I cell dz
Defective phosphotransferase
Parkinson dz (only some types)
Defects in ubiquitin-proteasome system
Kartagener syndrome
Defect in dyenin arm
OI type 1
Decreased production of type 1 collagen
Vascular type of EDS
Defect in type III collagen
Alport syndrome
Defective type IV collagen
Goodpasture syndrome
AutoAb against type IV collagen
Hypermobility type EDS
Defect in collagen X-linking
Classical EDS
Mutation in type V collagen
Menkes dz
Impaired copper absorption and transport
Marfan syndrome
Defect in fibrillin-1
Prader-Willi
Maternal imprinting (mom gene is normally silent; dad gene is deleted/mut); chr 15. 25% of cases are from maternal UPD
Angelman syndrome
Paternal imprinting (dad gene is normally silent; mom gene is deleted/mut); chr 15 5% of cases are from paternal UPD
Mitochondrial myopathies
Failure in oxidative phosphorylation
DMD
Frameshift mutation in dystrophin
BMD
Point mutation in dystrophin
Myotonic dystrophy
TNR: CTG repeats–> abnormal expression of myotonin protein kinase
Fragile X syndrome
TNG: CGG–>mutated FMR1 gene
HD
TNR-CAG repeats