β₂-microglobulin forms three-dimensional domain-swapped amyloid fibrils with disulfide linkages.
β₂-microglobulin forms three-dimensional domain-swapped amyloid fibrils with disulfide linkages.
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DOI:
10.1038/nsmb.1948
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发表时间:
2011-01
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
--
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β2-microglobulin (β2m) is the light chain of type I major histocompatibility complex. It deposits as amyloid fibrils within joints during long-term hemodialysis treatment. Despite the devastating effects of dialysis-related amyloidosis, full understanding of how fibrils form from soluble β2m remains elusive. Here we show that β2m can oligomerize and fibrillize via 3D domain swapping. Isolating a covalently bound, domain-swapped dimer from β2m oligomers on the pathway to fibrils, we were able to determine its crystal structure. The hinge loop which connects the swapped domain to the core domain includes the fibrillizing segment LSFSKD, whose atomic structure we also determined. The LSFSKD structure reveals a Class 5 steric zipper, akin to other amyloid spines. The structures of the dimer and the zipper spine fit well into an atomic model for this fibrillar form of β2m, which assembles slowly under physiological conditions.
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
DOI:
10.1073/pnas.0403756101
发表时间:
2004-07-20
影响因子:
11.1
作者:
Ivanova, MI;Sawaya, MR;Eisenberg, D
通讯作者:
Eisenberg, D
影响因子:
16.8
作者:
通讯作者:
--
DOI:
10.1046/j.1432-1327.1998.2580061.x
发表时间:
1998-11-15
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
Bellotti, V;Stoppini, M;Ferri, G
通讯作者:
Ferri, G
影响因子:
2.9
作者:
Eakin, CM;Attenello, FJ;Miranker, AD
通讯作者:
Miranker, AD