page_title: Tityustoxin peptide 2
section_title: Chemistry
hierarchical_section_title: Tityustoxin peptide 2 / Chemistry
caption_attribution_description: English: The sequence alignment of TsPep2, TsPep1 and TsPep3.
context_page_description: Tityustoxin peptide 2 is a peptide isolated from the venom of the Tityus serrulatus. It belongs to a class of short peptides, together with Tityustoxin peptide 1 and Tityustoxin peptide 3.
context_section_description: The original encoded sequence of TsPep2 consists of 68 amino acids processed in a mature peptide of 29 amino acids with a final molecular weight of 2993.59 Da. TsPep2 differs in the mature sequence from TsPep3 only in one amino acid and TsPep1 shows 58,6% of sequence homology with Tspep2 and TsPep3.
  Eight cysteines establish four disulfide bridges and a C-terminal tyrosine amide is present in the 55th position. Furthermore, TsPep2 sequence alignment shows that a part of the amino acid consensus sequence (CXXXKCCXC) involved in the pore blocking mechanism is present as in other known short scorpion toxins.
caption: The sequence alignment of TsPep2, TsPep1 and TsPep3.
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