Somatostatin-25

发表于由

Somatostatin-25;

Somatostatin-25 是一种内源性神经肽激素，能够抑制生长激素的分泌。

Somatostatin-25amp;;

Somatostatin-25 Chemical Structure

CAS No. : 76461-17-1

规格 价格 是否有货
500 μg ￥2200 询问价格 货期
1 mg ￥3500 询问价格 货期
5 mg ￥9900 询问价格 货期

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生物活性

Somatostatin-25 is a endogenous neuropeptide hormone that shows inhibitory activity against secretion of growth hormone.

体外研究
(In Vitro)

Somatostatin-25 (0.1 pM-1 nM) significantly inhibits secretion of growth hormone in the in vitro system, and is 3-14 times more effective than the tetradecapeptide. Somatostatin-25 (0.1 nM-1pM) also inhibits secretion of growth hormone induced by the addition of prostaglandin 2 (PGE2). However, Somatostatin-25 shows no effect on the secretion of prolactin[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
分子量

2876.30

Formula

C127H191N37O34S3
CAS 号

76461-17-1
Sequence

Ser-Asn-Pro-Ala-Met-Ala-Pro-Arg-Glu-Arg-Lys-Ala-Gly-Cys-Lys-Asn-Phe-Phe-Trp-Lys-Thr-Phe-Thr-Ser-Cys (Disulfide bridge: Cys14-Cys25)
Sequence Shortening

SNPAMAPRERKAGCKNFFWKTFTSC (Disulfide bridge: Cys14-Cys25)
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 (lt;0) 1.;;Try to dissolve the peptide in water first.
2.;;If water fails, add NH4OH (lt;50 μL).
3.;;If the peptide still does not dissolve, add DMSO (50-100 μL) to solubilize the peptide.
Positive (gt;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.
参考文献

  • [1]. Brazeau P, et al. High biological activity of the synthetic replicates of somatostatin-28 and somatostatin-25. Regul Pept. 1981 Jan;1(4):255-64.