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Output of coils program search for coiled coils (39) in SIRE-1 and selected retroviral transmembrane proteins. Similar results were obtained with ref. 40. Results shown are for a window of 21 amino acids. ——, SIRE-1; ⋅ ⋅ ⋅, HIV; - - -, murine leukemia virus; -··-··, influenza A virus. ∗, Numbering from the peptide cleavage site, except for SIRE-1, where residue 1 corresponds to the amino end of the putative hydrophobic fusion peptide.
