Crystal Structure of the Unstable and Highly Fibrillogenic PRO7SER Mutant of the Recombinant Variable Domain 6AJL2

A single mutation at the sheet switch region results in conformational changes favoring lambda6 light-chain fibrillogenesis.

AMYLOID LAMBDA 6 LIGHT CHAIN VARIABLE REGION PIP

NFMLTQSHSVSESPGKTVTISCTRSSGSIASNYVQWYQQRPGSSPTTVIYEDNQRPSGVPDRFSGSIDSSSNSASLTISG
LKTEDEADYYCQSYDSSNHVVFGGGTKLTVL

VL gene segment 6a and JL2/3 gene segment

Drops consisted of 5 microL of protein solution (7 mg/mL) plus 5 microL of Solution 7 from Crystal Screen I (Hampton Research), pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K

THE RESIDUES ARE NUMBERED CONSECUTIVELY IN THE POLYPEPTIDE CHAIN AND DO NOT FOLLOW THE KABAT.

HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS

Lambda VI subgroup, light chain variable domain, beta-sandwich, immunoglobulin, AL amyloidosis, IMMUNE SYSTEM