Peptide properties

1Top 2Function-activity relationship 3Calculated physicochemical properties 4Peptide source & Food-borne protein(s) search 5Biological/Functional activity & target protein 6Taste properties & Structure 7Preparation method 8Stability & Cytotoxicity 9Additional information 10Database cross-references 11Reference(s)

List of peptide properties

DFBP ID - DFBPACEI1157(ACE-inhibitory peptide)

DFBP ID	DFBPACEI1157
Peptide sequence	DELQDKIHPFAQTQSLVYPFPGPIPNS
Type	Native peptide
Peptide/Function name	ACE-inhibitory peptide

Function-activity relationship

Main bioactivity	ACE-inhibitory activity
Otheir bioactivity	Antihypertensive activity ^[D1], Multifunctional activity ^[D2]

Calculated physicochemical properties

Three-letter amino acid

Asp-Glu-Leu-Gln-Asp-Lys-Ile-His-Pro-Phe-Ala-Gln-Thr-Gln-Ser-Leu-Val-Tyr-Pro-Phe-Pro-Gly-Pro-Ile-Pro-Asn-Ser

Single-letter amino acid

DELQDKIHPFAQTQSLVYPFPGPIPNS

Peptide length

Peptide mass

Experimental mass	Theoretical mass
N.D	3039.36 Da ^c

Net charge

0.00 ^c

Isoelectric point (pI)

4.33 ^c

IC₅₀

4 uM

pIC₅₀

-0.602

GRAVY

-0.5704^c

Hydrophilic residue ratio

51.85%^c

Peptide calculator

Peptide source & Food-borne protein(s) search

Classification	Animal
Organism/Source	Milk protein
Precursor protein	β-Casein
Residue position	N.D
Precursor protein(s) search	Source.1: DFBPPR8489 ---- Milk proteins ---- Beta-casein
Link-research Inductive analysis	There are no literature reports on the discovery of this sequence in other food-source proteins.

Biological/Functional activity & target protein

ACE-inhibitory activity	The peptide exhibited very strong Angiotensin-Converting Enzyme (ACE) (EC 3.4.15.1) inhibitory activity with an IC₅₀ value of 4 μM.
Specific target protein(s)	Specific Target Protein(s): Angiotensin-converting enzyme

Taste properties & Structure

Bitterness

Literature report	N.D
Bitter prediction tools	Bitter taste ^prediction

SMILES

N[C@@]([H])(CC(=O)O)C(=O)N[C@@]([H])(CCC(=O)O)C(=O)N[C@@]([H])(CC(C)C)C(=O)N[C@@]([H])(CCC(=O)N)C(=O)N[C@@]([H])(CC(=O)O)C(=O)N[C@@]([H])(CCCCN)C(=O)N[C@@]([H])([C@]([H])(CC)C)C(=O)N[C@@]([H])(CC1=CN=C-N1)C(=O)N1[C@@]([H])(CCC1)C(=O)N[C@@]([H])(Cc1ccccc1)C(=O)N[C@@]([H])(C)C(=O)N[C@@]([H])(CCC(=O)N)C(=O)N[C@@]([H])([C@]([H])(O)C)C(=O)N[C@@]([H])(CCC(=O)N)C(=O)N[C@@]([H])(CO)C(=O)N[C@@]([H])(CC(C)C)C(=O)N[C@@]([H])(C(C)C)C(=O)N[C@@]([H])(Cc1ccc(O)cc1)C(=O)N1[C@@]([H])(CCC1)C(=O)N[C@@]([H])(Cc1ccccc1)C(=O)N1[C@@]([H])(CCC1)C(=O)NCC(=O)N1[C@@]([H])(CCC1)C(=O)N[C@@]([H])([C@]([H])(CC)C)C(=O)N1[C@@]([H])(CCC1)C(=O)N[C@@]([H])(CC(=O)N)C(=O)N[C@@]([H])(CO)C(=O)O

Preparation method

Mode of preparation	Enzymatic hydrolysis.
Enzyme(s)/starter culture	Hydrolysis with an extracellular proteinase from Lactobacillus helveticus CP790.

Stability & Cytotoxicity

Peptide stability

Literature report:	N.D
EHP-Tool:	Enzymatic Hydrolysis Prediction Tool (EHP-Tool)

Peptide cytotoxicity

Literature report:	N.D
Prediction:	ToxinPred

Additional information

N.D

Database cross-references

DFBP

[D1]	DFBPANHY0738
[D2]	DFBPMUFU0229

[D3]

[D4]

[D5]

[D6]

Reference(s)

Primary literature	Yamamoto, N., Akino, A., Takano, T. Antihypertensive Effect of the Peptides Derived from Casein by an Extracellular Proteinase from Lactobacillus helveticus CP790. Journal of Dairy Science. 1994, 77, 917-22. DOI: 10.3168/jds.S0022-0302(94)77026-0
Other literature(s)	N.D
PubDate	1994