Fatty aldehyde dehydrogenase: genomic structure, expression and mutation analysis in Sjögren-Larsson syndrome.
Fatty aldehyde dehydrogenase (FALDH) is a microsomal enzyme that catalyzes the oxidation of medium- and long-chain aliphatic aldehydes derived from metabolism of fatty alcohol, phytanic acid, ether glycerolipids and leukotriene B4. The FALDH gene (ALDH3A2) in man and mouse consists of 11 exons and is closely linked to the gene for ALDH3. In both species, alternative splicing results in formation of a second minor protein, FALDHv, that has a unique carboxy-terminal end. The functional significance of this alternate protein is not known. In humans, mutations in the FALDH gene cause Sjögren-Larsson syndrome (SLS), which is characterized by ichthyosis, mental retardation and spasticity. Missense mutations involving 24 amino acid positions in FALDH have been identified. These amino acids are more highly conserved among related class 3 aldehyde dehydrogenase enzymes than expected, suggesting that they are critically important for protein folding, catalysis or stability. Studies of mutations in SLS should prove useful for understanding structure-function correlations in FALDH and other aldehyde dehydrogenase proteins.
Rizzo
W B
WB
Departments of Pediatrics, Human Genetics, and Biochemistry and Molecular Biophysics, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA, USA. wrizzo@hsc.vcu.edu
Lin
Z
Z
Carney
G
G
D000445:Aldehyde Oxidoreductases / Q000737:chemistry / Q000235:genetics* / Q000502:physiology; D000595:Amino Acid Sequence; D000818:Animals; D015870:Gene Expression; D006801:Humans; D051379:Mice; D008969:Molecular Sequence Data; D009154:Mutation; D020125:Mutation, Missense; D011110:Polymorphism, Genetic; D017386:Sequence Homology, Amino Acid; D016111:Sjogren-Larsson Syndrome / Q000201:enzymology* / Q000235:genetics*; D013045:Species Specificity
D000445:Aldehyde Oxidoreductases; C038828:long-chain-aldehyde dehydrogenase