Approximately 25% of the λ6 light chains have glycine rather than arginine at position 25, which is an allelic variant of the IGLV6-57 (6a) locus. The Gly25 variant has been shown to decrease the folding stability of the germline λ6 V(L) protein 6aJL2 by 1.7 kcal·mol(-1).
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