Need some assistance with peptide nomenclature. Have scoured the net and some text and cannot find an explanation as to what the "H-" stands for at the beginning of the peptide for H-D-Val-Leu-Arg-AFC.
M. Eugenio Vazquez
Yes, as Małgorzata said, both are equivalent. Yo might also find H-peptide-NH2 meaning that the C-terminus is as an amide, or H-peptide-OH (C-terminus as free acid) and Ac-peptide is also very common (N-terminus acetylated). There's a very good section on peptide nomenclature in:
Peptides: Chemistry and Biology. Norbert Sewald, Hans-Dieter Jakubke, 2002 Wiley-VCH Verlag GmbH & Co. KGaA ISBNs: 3-527-30405-3 (Hardback); 3-527-60068-X (Electronic)
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Reinaldo Marchetto
The two sequences are the same, containing the N-terminal residue (Asp) free.
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