Identity
- Class
- Antimicrobial
- Molecular weight
- 3036 Da
- Residues
- 24
- Heavy atoms
- 217
- Reference slug
- histatin-5
These are published properties of the molecule, given for identification. Values we cannot confirm are omitted rather than estimated. What these terms mean.
What this compound is
Twenty-four residues from human saliva, seven of them histidine, which is what binds the metal ions it depends on. No other peptide here is so histidine-rich.
Sequence
| 1 | DSHAKRHHGY KRKFHEKHHS HRGY |
|---|
- Three-letter code
- Asp-Ser-His-Ala-Lys-Arg-His-His-Gly-Tyr-Lys-Arg-Lys-Phe-His-Glu-Lys-His-His-Ser-His-Arg-Gly-Tyr
The one-letter code gives the amino-acid backbone. Terminal modifications, where a compound carries them, are accounted for in the molecular weight above but are not visible in the letters.
Residue composition
Counted directly from the sequence above. Histatin 5 is built from 10 of the twenty standard amino acids across 24 positions.
By residue
| Residue | Code | Count | Share |
|---|---|---|---|
| Histidine | H · His | 7 | 29.2% |
| Lysine | K · Lys | 4 | 16.7% |
| Arginine | R · Arg | 3 | 12.5% |
| Glycine | G · Gly | 2 | 8.3% |
| Serine | S · Ser | 2 | 8.3% |
| Tyrosine | Y · Tyr | 2 | 8.3% |
| Alanine | A · Ala | 1 | 4.2% |
| Aspartic acid | D · Asp | 1 | 4.2% |
| Glutamic acid | E · Glu | 1 | 4.2% |
| Phenylalanine | F · Phe | 1 | 4.2% |
By side-chain class
Nonpolar, aliphatic
3 · 12.5%
A G
Aromatic
3 · 12.5%
F Y
Polar, uncharged
2 · 8.3%
S
Positively charged
14 · 58.3%
H K R
Negatively charged
2 · 8.3%
D E
Side-chain classes follow the standard grouping of the twenty proteinogenic amino acids. Composition is arithmetic over the published sequence and says nothing about how the molecule behaves.
Others in Antimicrobial
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Thirty-five residues in two helices joined by a hinge: a charged one at the front and a hydropho…
Reference entry
This is a reference entry. Sequence, residue count, molecular weight and atom count are published properties of the molecule, given for identification. Nothing on this page describes an application, benefit, dose, route or outcome, and nothing here should be read as an offer to supply or as guidance for use in a person or an animal. Materials sold by PepXtide are for laboratory research use only, are not for human or animal consumption, and have not been evaluated by the FDA.