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Figure 2
Alignment of the primary sequence of HEL (black text) with Pekin DEL sequences found in the literature (blue text; `DEL_Huang' and `DEL_Kondo_'), with those structurally and/or confirmed by mass spectrometry described here (shaded blue; DEL-I, DEL-II ad DEL-III) as well as with sequences available for Khaki duck (red text), Egyptian goose and American wood duck (both grey text). Amino-acid identities are identical to HEL (indicated by a dash) unless explicitly stated. Ambiguities at positions 66 and 103 are highlighted in yellow, whilst arrows indicate the additional arginines in DEL sequences at positions 71, 79 and 100 (highlighted in green). Although derived by different means, the sequences of DEL_Huang and DEL_Kondo_DL-2 (marked with asterisks) effectively describe the same species (DEL-II).

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983
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