Rm. Horton et al., THE EMBRYONIC GAMMA-SUBUNIT OF THE NICOTINIC ACETYLCHOLINE-RECEPTOR IS EXPRESSED IN ADULT EXTRAOCULAR-MUSCLE, Neurology, 43(5), 1993, pp. 983-986
We have PCR-amplified cDNA sequence of the 'embryonic'' gamma subunit
of muscle acetylcholine receptor (AChR) from adult bovine extraocular
muscle (EOM). We cloned and sequenced this product and used it to prob
e Northern blots. We detected the gamma subunit in EOM mRNA, but not i
n control skeletal muscle. The presence of gamma subunit in EOMs may e
xplain their preferential involvement in myasthenia gravis, where an a
utoimmune response to the gamma subunit is generally present.