PMID- 10338091 OWN - NLM STAT- MEDLINE DCOM- 19990811 LR - 20121115 IS - 1059-7794 (Print) IS - 1059-7794 (Linking) VI - 13 IP - 5 DP - 1999 TI - Two novel mutations of the FMO3 gene in a proband with trimethylaminuria. PG - 376-9 AB - The mammalian flavin-containing monooxygenases catalyze the NADPH-dependent N-oxygenation of nucleophilic nitrogen-, sulfur-, and phosphorus-containing chemicals, drugs, and xenobiotics, including trimethylamine. The FMO3 gene encodes the dominant catalytically active isoform present in human liver. We have identified two missense mutations in the coding region of the gene in a proband with trimethylaminuria (TMA): M66I and R492W. Whereas two mutations (P153L, E305X) accounted for TMA in our eight unrelated previously documented Australian families of British origin, the present report is the first evidence of compound heterozygosity for two rare mutations in a proband with this disorder. This suggests that other rarer alleles, also causing TMA, will be found in the same populations. FAU - Akerman, B R AU - Akerman BR AD - C.R. Scriver Biochemical Genetics Unit, Montreal Children's Hospital, Quebec, Canada. FAU - Forrest, S AU - Forrest S FAU - Chow, L AU - Chow L FAU - Youil, R AU - Youil R FAU - Knight, M AU - Knight M FAU - Treacy, E P AU - Treacy EP LA - eng SI - GENBANK/U39960 SI - GENBANK/U39961 SI - GENBANK/U39962 SI - GENBANK/U39963 SI - GENBANK/U39964 SI - GENBANK/U39965 SI - GENBANK/U39966 SI - GENBANK/U39967 PT - Case Reports PT - Journal Article PL - United States TA - Hum Mutat JT - Human mutation JID - 9215429 RN - 0 (DNA Primers) RN - 0 (Methylamines) RN - EC 1.13.- (Oxygenases) RN - EC 1.14.13.8 (dimethylaniline monooxygenase (N-oxide forming)) RN - LHH7G8O305 (trimethylamine) SB - IM MH - Adult MH - Chromosomes, Human, Pair 1 MH - DNA Mutational Analysis MH - DNA Primers MH - Humans MH - Male MH - Methylamines/*urine MH - *Mutation MH - Oxygenases/*genetics MH - Polymorphism, Single-Stranded Conformational EDAT- 1999/05/25 06:00 MHDA- 2000/06/22 10:00 CRDT- 1999/05/25 06:00 PHST- 1999/05/25 06:00 [pubmed] PHST- 2000/06/22 10:00 [medline] PHST- 1999/05/25 06:00 [entrez] AID - 10.1002/(SICI)1098-1004(1999)13:5<376::AID-HUMU5>3.0.CO;2-A [pii] AID - 10.1002/(SICI)1098-1004(1999)13:5<376::AID-HUMU5>3.0.CO;2-A [doi] PST - ppublish SO - Hum Mutat. 1999;13(5):376-9. doi: 10.1002/(SICI)1098-1004(1999)13:5<376::AID-HUMU5>3.0.CO;2-A.