Hemopressin TFA 是一种源自血红蛋白 α1 链的九肽，最初是从大鼠脑匀浆中分离出来的。Hemopressin TFA 是口服有效的，选择性的CB1大麻素受体的反向激动剂。Hemopressin TFA 在炎性疼痛模型中发挥抗伤害感受作用。
| 生物活性 | Hemopressin TFA is a nonapeptide derived from the α1-chain of hemoglobin, is originally isolated from rat brain homogenates. Hemopressin TFA is orally active, selective and inverse agonist ofCB1cannabinoid receptors. Hemopressin TFA exerts antinociceptive action in inflammatory pain models[1][2]. |
体内研究
(In Vivo) | Hemopressin TFA causes hypotension in anesthetized rats and is metabolized in vivo and in vitro by endopeptidase 24.15 (EP24.15), neurolysin (EP24.16), and angiotensin-converting enzyme (ACE)[1].
Oral administration of Hemopressin TFA inhibits mechanical hyperalgesia of CCI-rats up to 6h. Hemopressin TFA treatment also decreases Egr-1 immunoreactivity (Egr-1Ir) in the superficial layer of the dorsal horn of the spinal cord of CCI rats[2].
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| 分子量 | |
| Formula | |
| Sequence | Pro-Val-Asn-Phe-Lys-Leu-Leu-Ser-His |
| Sequence Shortening | |
| 运输条件 | Room temperature in continental US; may vary elsewhere. |
| 储存方式 | Please store the product under the recommended conditions in the Certificate of Analysis. |
| Solvent & Solubility | In Vitro: H2O Peptide Solubility and Storage Guidelines: 1. Calculate the length of the peptide. 2. Calculate the overall charge of the entire peptide according to the following table: | | Contents | Assign value | | Acidic amino acid | Asp (D), Glu (E), and the C-terminal -COOH. | -1 | | Basic amino acid | Arg (R), Lys (K), His (H), and the N-terminal -NH2 | +1 | | Neutral amino acid | Gly (G), Ala (A), Leu (L), Ile (I), Val (V), Cys (C), Met (M), Thr (T), Ser (S), Phe (F), Tyr (Y), Trp (W), Pro (P), Asn (N), Gln (Q) | 0 |
3. Recommended solution: | Overall charge of peptide | Details | | Negative (<0) | 1. Try to dissolve the peptide in water first.
2. If water fails, add NH4OH (<50 μL).
3. If the peptide still does not dissolve, add DMSO (50-100 μL) to solubilize the peptide. | | Positive (>0) | 1. Try to dissolve the peptide in water first.
2. If water fails, try dissolving the peptide in a 10%-30% acetic acid solution.
3. If the peptide still does not dissolve, try dissolving the peptide in a small amount of DMSO. | | Zero (=0) | 1. Try to dissolve the peptide in organic solvent (acetonitrile, methanol, etc.) first.
2. For very hydrophobic peptides, try dissolving the peptide in a small amount of DMSO, and then dilute the solution with water to the desired concentration. |
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