Molecular mechanisms of type II factor XIII deficiency: novel Gly562-Arg mutation and C-terminal truncation of the A subunit cause factor XIII deficiency as characterized in a mammalian expression system.
Molecular mechanisms of type II factor XIII deficiency: novel Gly562-Arg mutation and C-terminal truncation of the A subunit cause factor XIII deficiency as characterized in a mammalian expression system.
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II 型因子 XIII 缺乏的分子机制:新的 Gly562-Arg 突变和 A 亚基的 C 端截短导致因子 XIII 缺乏,如哺乳动物表达系统中所表征的。
DOI:
10.1182/blood.v91.8.2830.2830_2830_2838
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发表时间:
1998
期刊:
影响因子:
20.3
通讯作者:
A. Ichinose
中科院分区:
文献类型:
--
作者:
N. Takahashi;H. Tsukamoto;H. Umeyama;G. Castaman;F. Rodeghiero;A. Ichinose
To explore the biological and clinical implications of the structure/function relationships in factor XIII, mutations in two patients with type II deficiency were identified and characterized in a mammalian expression system. Nucleotide sequence analysis of the A subunit gene showed that case no. 1 had a deletion of 4 bp (AATT) in exon XI and that, in case no. 2, Gly562 (GGG) had been replaced by Arg(AGG). The deletion in case no. 1 leads to a premature termination at codon 464. Restriction digestion of amplified DNAs confirmed that both cases were homozygous for their respective mutations. Reverse transcription-polymerase chain reaction analysis demonstrated that the level of mRNA was greatly reduced in case no. 1, whereas the level of mutant mRNA expressed in case no. 2 was normal. Molecular modeling calculated that Arg562 changed the conformation of the A subunit, suggesting misfolding and/or destabilization of the molecule. To determine how these mutations impaired synthesis of the A subunit, recombinant A subunits bearing the mutations were expressed in mammalian cells. Pulse-chase experiments showed that the mutants were synthesized normally but disappeared rapidly, whereas the wild-type remained. These results indicate that both mutant proteins with an altered conformation become prone to rapid degradation, resulting in factor XIII deficiency in these patients.
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DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Lai,TS;Achyuthan,KE;Santiago,MA;Greenberg,GS
通讯作者:
Greenberg,GS
DOI:
10.1016/s0021-9258(18)54144-2
发表时间:
1993-01
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
F. Tokunaga;T. Muta;S. Iwanaga;A. Ichinose;E. Davie;K. Kuma;Toshio Miyata
通讯作者:
F. Tokunaga;T. Muta;S. Iwanaga;A. Ichinose;E. Davie;K. Kuma;Toshio Miyata
DOI:
--
发表时间:
1980
期刊:
Progress in hemostasis and thrombosis
影响因子:
--
作者:
Lorand,L;Losowsky,MS;Miloszewski,KJ
通讯作者:
Miloszewski,KJ
影响因子:
20.3
作者:
Mikkola,H;Yee,VC;Syrjälä,M;Seitz,R;Egbring,R;Petrini,P;Ljung,R;Ingerslev,J;Teller,DC;Peltonen,L;Palotie,A
通讯作者:
Palotie,A
影响因子:
2.7
作者:
Kaetsu,H;Hashiguchi,T;Foster,D;Ichinose,A
通讯作者:
Ichinose,A