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Proposed secondary structure of the SUATM129 heterodimer of SU and TM glycoproteins. The proposed disulfide bonds are indicted with red lines. Bonds to cysteines C11 and C12 (indicated with a box) could not be assigned further. The free cysteine is indicted, C2. The N-linked glycosylation sites that were converted to aspartic acid after PNGase F treatment, and therefore contained carbohydrate additions, are marked in blue. The unglycosylated sites are underlined, N8 and N13.
