PMID- 10436378 OWN - NLM STAT- MEDLINE DCOM- 19990921 LR - 20171101 IS - 0001-5652 (Print) IS - 0001-5652 (Linking) VI - 49 IP - 4 DP - 1999 Jul TI - Identification of a new transthyretin variant (Ile49) in familial amyloidotic polyneuropathy using electrospray ionization mass spectrometry and nonisotopic RNase cleavage assay. PG - 186-9 AB - Mutation of the transthyretin (TTR) plasma protein and gene in a Japanese patient with amyloid polyneuropathy was investigated by electrospray ionization mass spectrometry (ESI-MS) and nonisotopic RNase cleavage assay (NIRCA), respectively. ESI-MS analysis showed normal TTR peaks and additionally a variant TTR with 12-dalton-higher molecular weight than normal TTR. NIRCA suggested that the mutation existed near either the 5' or 3' end of exon 3. Direct DNA sequencing revealed both a normal ACC (threonine) and a variant ATC (isoleucine) at codon 49, which was located near the 5' end of exon 3. The molecular weight shift of this mutation was 12 D, consistent with the result of ESI-MS. FAU - Nakamura, M AU - Nakamura M AD - Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202-5251, USA. FAU - Yamashita, T AU - Yamashita T FAU - Ando, Y AU - Ando Y FAU - Hamidi Asl, K AU - Hamidi Asl K FAU - Tashima, K AU - Tashima K FAU - Ohlsson, P AU - Ohlsson P FAU - Kususe, Y AU - Kususe Y FAU - Benson, M D AU - Benson MD LA - eng GR - DK42111/DK/NIDDK NIH HHS/United States GR - DK49596/DK/NIDDK NIH HHS/United States GR - RR-00750/RR/NCRR NIH HHS/United States GR - etc. PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - Switzerland TA - Hum Hered JT - Human heredity JID - 0200525 RN - 0 (Prealbumin) RN - 0 (RNA, Messenger) RN - EC 3.1.- (Ribonucleases) SB - IM MH - Aged MH - Amyloid Neuropathies/*genetics MH - Female MH - *Genetic Variation MH - Humans MH - Mass Spectrometry/*methods MH - Polymerase Chain Reaction MH - Prealbumin/*genetics MH - RNA, Messenger/metabolism MH - Restriction Mapping MH - Ribonucleases/*metabolism MH - Sequence Analysis, DNA EDAT- 1999/08/07 00:00 MHDA- 1999/08/07 00:01 CRDT- 1999/08/07 00:00 PHST- 1999/08/07 00:00 [pubmed] PHST- 1999/08/07 00:01 [medline] PHST- 1999/08/07 00:00 [entrez] AID - 22872 [pii] AID - 10.1159/000022872 [doi] PST - ppublish SO - Hum Hered. 1999 Jul;49(4):186-9. doi: 10.1159/000022872.