Molecular Analyses ofan Acidic Transthyretin Asn90Variant
Molecular Analyses ofan Acidic Transthyretin Asn90Variant
复制标题
酸性运甲状腺素蛋白 Asn90 变体的分子分析
DOI:
--
复制
发表时间:
1991
期刊:
影响因子:
--
通讯作者:
A. Banhzoff
中科院分区:
文献类型:
--
作者:
M. Saraiva;M. Almeida;TIsabel LongoAlves;A. Moreira;M. Gawinowicz;P. Costa;S. Rauh;A. Banhzoff
Summary A mutation intransthyretin (TTRAsn90)hasbeenidentified inthePortuguese andGermanpopulations. Thisvariant hasa lower pIandwas found byscreening analyses in2/4,000 Germansubjects andin4/ 1,200 Portuguese byusing either double one-dimensional (D1-D) electrophoresis withisoelectric focusing (IEF) orhybrid isoelectric focusing inimmobilized pHgradients (HIEF) asthefinal separation step.The Portuguese population sample was fromthe areawhere TTRMet30-associated familial amyloidotic polyneuropathy (FAP) prevails, andit was divided into (a) a group of500individuals belonging toFAPkindreds and(b) a groupof700collected atrandom. HIEFshowed twoparticular situations: (1) one case,froman FAPkindred, was simultaneously carrier oftheMet30substitution andtheacidic variant, and(2) one individual, fromtherandomly selected Portuguese sample, hadonly theacidic monomer. Comparative peptide mapping, byHPLC,oftheacidic variant carriers andofnormal TTRshowed the presenceofan abnormal tryptic peptide, notpresentinthenormal TTRdigests, with anasparagine-for-histidine substitution atposition 90explained bya single basechange ofadenine forcytosine inthehistidine codon. This was confirmed attheDNA level byRFLPanalyses ofPCR-amplified material after digestion withSphIandBsmI.Inall carriers oftheAsn90substitution, no indicators werefound for an association withtraits characteristic forFAP.
DOI:
10.1016/0006-291x(89)91802-0
发表时间:
1989
影响因子:
3.1
作者:
Skare,JC;Saraiva,MJ;Alves,IL;Skare,IB;Milunsky,A;Cohen,AS;Skinner,M
通讯作者:
Skinner,M