Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1997-2-20
pubmed:abstractText
The porphyrias are disorders that result from the inherited or acquired dysregulation of one of the eight enzymes in the heme biosynthetic pathway. Variegate porphyria (VP) is characterized by deficiencies in protoporphyrinogen oxidase (PPO) and has recently been genetically linked (Z = 6.62) to the PPO gene on chromosome 1q21. In this study, we have identified two sequence variants in the PPO gene in a family with VP. The first is a neutral polymorphism at the -47 position of intron 2; this polymorphism is present in the general population and is unlikely to underlie the VP phenotype. The second is a mutation in the PPO gene in a patient with VP; the mutation consists of an apparently de novo 2-bp insertion in exon 3 of PPO and results in a frameshift and downstream premature termination codon. These data establish that a frameshift mutation in PPO is the underlying mutation in this patient with VP and explain the sporadic occurrence of the phenotype in this family.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0340-6717
pubmed:author
pubmed:issnType
Print
pubmed:volume
99
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
126-9
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed-meshheading:9003509-Adult, pubmed-meshheading:9003509-Amino Acid Sequence, pubmed-meshheading:9003509-Base Sequence, pubmed-meshheading:9003509-Chromosome Mapping, pubmed-meshheading:9003509-Chromosomes, Human, Pair 1, pubmed-meshheading:9003509-DNA Primers, pubmed-meshheading:9003509-DNA Transposable Elements, pubmed-meshheading:9003509-Exons, pubmed-meshheading:9003509-Female, pubmed-meshheading:9003509-Flavoproteins, pubmed-meshheading:9003509-Humans, pubmed-meshheading:9003509-Male, pubmed-meshheading:9003509-Mitochondrial Proteins, pubmed-meshheading:9003509-Molecular Sequence Data, pubmed-meshheading:9003509-Nuclear Family, pubmed-meshheading:9003509-Oxidoreductases, pubmed-meshheading:9003509-Oxidoreductases Acting on CH-CH Group Donors, pubmed-meshheading:9003509-Pedigree, pubmed-meshheading:9003509-Polymerase Chain Reaction, pubmed-meshheading:9003509-Polymorphism, Genetic, pubmed-meshheading:9003509-Porphobilinogen, pubmed-meshheading:9003509-Porphyria Cutanea Tarda, pubmed-meshheading:9003509-Porphyrias, Hepatic, pubmed-meshheading:9003509-Porphyrins, pubmed-meshheading:9003509-Protoporphyrinogen Oxidase
pubmed:year
1997
pubmed:articleTitle
Molecular basis of variegate porphyria: a de novo insertion mutation in the protoporphyrinogen oxidase gene.
pubmed:affiliation
Department of Dermatology, Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Case Reports, Research Support, Non-U.S. Gov't