1. Peptides

BNP-45 rat (Synonyms: Brain natriuretic peptide-45 rat)

Cat. No.: HY-P1573
Handling Instructions

BNP-45 (rat), a 45-amino acid brain natriurctic peptide isolated from rat heart, is a circulating hormone, with natriuretic and hypotensive activities.

For research use only. We do not sell to patients.

Custom Peptide Synthesis

BNP-45 rat Chemical Structure

BNP-45 rat Chemical Structure

CAS No. : 123337-89-3

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Customer Review

  • Biological Activity

  • Protocol

  • Technical Information

  • Purity & Documentation

  • References

Description

BNP-45 (rat), a 45-amino acid brain natriurctic peptide isolated from rat heart, is a circulating hormone, with natriuretic and hypotensive activities.

In Vitro

BNP-45 (rat), a 45-amino acid brain natriurctic peptide isolated from rat heart, is a circulating hormone, with natriuretic and hypotensive activities[1].

In Vivo

BNP-45 (rat) (0.1, O.2, 0.5, 1.0 and 2.0 nmol/kg, i.v.) shows potent natriuretic and hypotensive activities in anesthetized spontaneously hypertensive rats (SHR) and Wistar-Kyoto rats (WKY). BNP-45 (rat) with high concentration decreases blood pressure in SHR. But WKY is more susceptible than SHR to BNP-45 for diuresis, natriuresis and urinary cGMP excretion. In addition, high dose of BNP-45 (rat) cuases prolonged lowering of blood pressure and urinary cGMP excretion in WKY[1].

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.
References
Animal Administration
[1]

Rats[1]
Male anesthetized spontaneously hypertensive rats (SHR) and Wistar-Kyoto rats (WKY) (20- to 25 week-old) are used in the assay. Isotonic saline (20 μL/min) is infused throughout the esperiment. After equilibration for at least 60 min, urine is collected every 10 min during a 20-min control period. Rat BNP-45 or rat α-ANP (0.1, O.2, 0.5, 1.0 and 2.0 nmol/kg) dissolved in saline containing 1% bacitracin is injected i.v., and urine is collected continuously for three to six 10-min periods following each dose. There is a 30- to 60-min rest interval between each injection, to allow the urine volume to return to a steady baseline value. Urine volume is determined by weight. Urinary sodium and potassium are measured by flame photometry. The concentration of cGMP in urine is measured by radioimmunoassay, using cGMP assay kit[1].

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

References
Molecular Weight

5040.67

Formula

C₂₁₃H₃₄₉N₇₁O₆₅S₃

CAS No.

123337-89-3

Sequence

Ser-Gln-Asp-Ser-Ala-Phe-Arg-Ile-Gln-Glu-Arg-Leu-Arg-Asn-Ser-Lys-Met-Ala-His-Ser-Ser-Ser-Cys-Phe-Gly-Gln-Lys-Ile-Asp-Arg-Ile-Gly-Ala-Val-Ser-Arg-Leu-Gly-Cys-Asp-Gly-Leu-Arg-Leu-Phe(Disulfide bridge: Cys23-Cys39)

Sequence Shortening

SQDSAFRIQERLRNSKMAHSSSCFGQKIDRIGAVSRLGCDGLRLF(Disulfide bridge: Cys23-Cys39)

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

Shipping

Room temperature in continental US; may vary elsewhere

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  • Dilution Calculator

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass   Concentration   Volume   Molecular Weight *
= × ×

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

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Product Name:
BNP-45 rat
Cat. No.:
HY-P1573
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BNP-45 rat

Cat. No.: HY-P1573