Calcitonin (salmon)

Chemical Information
Calcitonin is a 32-membered heterodetic cyclic peptide comprising the sequence Cys-Ser-Asn-Leu-Ser-Thr-Cys-Val-Leu-Gly-Lys-Leu-Ser-Gln-Glu-Leu-His-Lys-Leu-Gln-Thr-Tyr-Pro-Arg-Thr-Asn-Thr-Gly-Ser-Gly-Thr-Pro-NH2 cyclised by a disulfide bridge between the two Cys residues at positions 1 and 7. It has a role as a metabolite and a bone density conservation agent. It is a polypeptide, a heterodetic cyclic peptide and a peptide hormone.
| CAS Number | 47931-85-1 |
| PubChem CID | 16220016 |
| IUPAC Name | (4S)-4-[[(2S)-5-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-6-amino-2-[[2-[[(2S)-2-[[(2S)-2-[[(4R,7S,10S,13S,16S,19S,22R)-22-amino-16-(2-amino-2-oxoethyl)-7-[(1R)-1-hydroxyethyl]-10,19-bis(hydroxymethyl)-13-(2-methylpropyl)-6,9,12,15,18,21-hexaoxo-1,2-dithia-5,8,11,14,17,20-hexazacyclotricosane-4-carbonyl]amino]-3-methylbutanoyl]amino]-4-methylpentanoyl]amino]acetyl]amino]hexanoyl]amino]-4-methylpentanoyl]amino]-3-hydroxypropanoyl]amino]-5-oxopentanoyl]amino]-5-[[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-5-amino-1-[[(2S,3R)-1-[[(2S)-1-[(2S)-2-[[(2S)-1-[[(2S,3R)-1-[[(2S)-4-amino-1-[[(2S,3R)-1-[[2-[[(2S)-1-[[2-[[(2S,3R)-1-[(2S)-2-carbamoylpyrrolidin-1-yl]-3-hydroxy-1-oxobutan-2-yl]amino]-2-oxoethyl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-2-oxoethyl]amino]-3-hydroxy-1-oxobutan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-3-hydroxy-1-oxobutan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]carbamoyl]pyrrolidin-1-yl]-3-(4-hydroxyphenyl)-1-oxopropan-2-yl]amino]-3-hydroxy-1-oxobutan-2-yl]amino]-1,5-dioxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-1-oxohexan-2-yl]amino]-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-5-oxopentanoic acid |
| Molecular Formula | C145H240N44O48S2 |
| Molecular Weight | 3431.9 |
| XLogP | -16.6 |
| Topological Polar Surface Area | 1560 |
| Hydrogen Bond Donor Count | 52 |
| Hydrogen Bond Acceptor Count | 55 |
| Rotatable Bond Count | 99 |
| Heavy Atom Count | 239 |
| Formal Charge | 0 |
| Complexity | 7970 |
| Property | Value |
|---|---|
| Molecular Weight | 3431.9 |
| XLogP3 | -16.6 |
| Hydrogen Bond Donor Count | 52 |
| Hydrogen Bond Acceptor Count | 55 |
| Rotatable Bond Count | 99 |
| Exact Mass | 3430.7166627 |
| Monoisotopic Mass | 3429.7133079 |
| Topological Polar Surface Area | 1560 Ų |
| Heavy Atom Count | 239 |
| Formal Charge | 0 |
| Complexity | 7970 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 34 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
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