Éva Bulyáki, Judit Kun, Tamás Molnár, Alexandra Papp, András Micsonai, Henrietta Vadászi, Borbála Márialigeti, Attila István Kovács, Gabriella Gellén, Keiichi Yamaguchi, Yuxi Lin, Masatomo So, Mihály Józsi, Gitta Schlosser, Young-Ho Lee, Károly Liliom, Yuji Goto, József Kardos
β2 -microglobulin (β2m), the light chain of the MHC-I complex, is associated with dialysis-related amyloidosis (DRA). Recently, a hereditary systemic amyloidosis was discovered, caused by a naturally occurring D76N β2m variant, which showed a structure remarkably similar to the wild-type (WT) protein, albeit with decreased thermodynamic stability and increased amyloidogenicity. Here, we investigated the role of the D76N mutation in the amyloid formation of β2m by point mutations affecting the Asp76-Lys41 ion-pair of WT β2m and the charge cluster on Asp38...
November 17, 2021: Biology