RT Journal Article SR Electronic T1 Arginine 109 to glutamine mutation in a girl with ornithine carbamoyl transferase deficiency. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 871 OP 874 DO 10.1136/jmg.28.12.871 VO 28 IS 12 A1 Strautnieks, S A1 Rutland, P A1 Malcolm, S YR 1991 UL http://jmg.bmj.com/content/28/12/871.abstract AB We studied DNA from 29 families with at least one member with ornithine carbamoyl transferase (OCT) deficiency and have found a mutation in the TaqI site within exon 5 of the OCT gene in a female presenting at the age of 21 months. Hybridisation with site specific oligonucleotides shows that the mutation is a C to T substitution resulting in a glutamine for arginine substitution at amino acid 109.