Structural alterations within native amyloidogenic immunoglobulin light chains.
Structural alterations within native amyloidogenic immunoglobulin light chains.
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DOI:
10.1016/j.jmb.2009.04.010
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发表时间:
2009-05-29
影响因子:
5.6
通讯作者:
Ramirez-Alvarado, Marina
中科院分区:
文献类型:
--
作者:
Randles, Edward G.;Thompson, James R.;Martin, Douglas J.;Ramirez-Alvarado, Marina
关键词:
Amyloid diseases are characterized by the misfolding of a precursor protein that leads to amyloid fibril formation. Despite the fact that there are different precursors, some commonalities in the misfolding mechanism are thought to exist. In light chain amyloidosis (AL), the immunoglobulin light chain (LC) forms amyloid fibrils that deposit in the extracellular space of vital organs. AL proteins are thermodynamically destabilized compared to non-amyloidogenic proteins and some studies have linked this instability to increased fibril formation rates. Here we present the crystal structures of two highly homologous AL proteins, AL-12 and AL-103. This structural study shows that these proteins retain the canonical germline dimer interface. We highlight important structural alterations in two loops flanking the dimer interface and correlate these results with the somatic mutations present in AL-12 and AL-103. We suggest that these alterations are informative structural features that are likely contributing to protein instability that leads to conformational changes involved in the initial events of amyloid formation.
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影响因子:
3.7
作者:
Poshusta TL;Sikkink LA;Leung N;Clark RJ;Dispenzieri A;Ramirez-Alvarado M
通讯作者:
Ramirez-Alvarado M
影响因子:
2.9
作者:
HUANG, DB;CHANG, CH;SCHIFFER, M
通讯作者:
SCHIFFER, M
影响因子:
5.6
作者:
Palaninathan, Satheesh K.;Mohamedmohaideen, Nilofar N.;Sacchettini, James C.
通讯作者:
Sacchettini, James C.
DOI:
10.3109/13506129909007322
发表时间:
1999-09-01
期刊:
AMYLOID-INTERNATIONAL JOURNAL OF EXPERIMENTAL AND CLINICAL INVESTIGATION
影响因子:
--
作者:
Pokkuluri, PR;Solomon, A;Schiffer, M
通讯作者:
Schiffer, M
影响因子:
2.9
作者:
EPP, O;LATTMAN, EE;PALM, W
通讯作者:
PALM, W