This allele was first described as having four point mutations: A82T, V87A, S258L, and D301N. The first two mutations are in the most N-terminal of the four homologous repeats of the stalk region and are predicted to form an alpha-helical coiled-coil arrangement on trimerisation. S258L is in a region essential for IgE binding. A later study revealed a fifth point mutation, K131E, that occurs in the stalk region. This allele is found in mice of 129 or NZB origin. (J:93999, J:142807)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count