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. 1997 May 19;137(4):835–845. doi: 10.1083/jcb.137.4.835

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Diagon plots comparing related proteins in the AP-1, AP-2, and AP-3 complexes. The sequences of all four types of subunits were compared using the “SIP” program (Staden, 1990), which was also used to calculate the percent identity. The δ subunit shows the least similarity with its counterparts in the AP-1 and AP-2 complexes, while the σ subunits (σ3A and σ3B) show the most. The protein product of the Drosophila garnet gene is also shown, compared with the δ subunit.