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 - DFBPACEI1843(ACE-inhibitory peptide)

DFBP ID	DFBPACEI1843
Peptide sequence	MPFPKYPVEP
Type	Native peptide
Peptide/Function name	ACE-inhibitory peptide

Function-activity relationship

Main bioactivity	ACE-inhibitory activity
Otheir bioactivity	N.D

Calculated physicochemical properties

Three-letter amino acid

Met-Pro-Phe-Pro-Lys-Tyr-Pro-Val-Glu-Pro

Single-letter amino acid

MPFPKYPVEP

Peptide length

Peptide mass

Experimental mass	Theoretical mass
1219.55 Da	1204.44 Da ^c

Net charge

0.00 ^c

Isoelectric point (pI)

6.87 ^c

IC₅₀

83.00 μM

pIC₅₀

-1.919

GRAVY

-0.6200^c

Hydrophilic residue ratio

70%^c

Peptide calculator

Peptide source & Food-borne protein(s) search

Classification	Animal
Organism/Source	Bovine sodium caseinate
Precursor protein	β-Casein
Residue position	f(124-133)
Precursor protein(s) search	Source.1: DFBPPR7692 ---- Milk proteins ---- Beta-casein Source.2: DFBPPR7700 ---- Milk proteins ---- Beta-casein Source.3: DFBPPR7718 ---- Milk proteins ---- Beta-casein Source.4: 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 potent Angiotensin-Converting Enzyme (ACE) (EC 3.4.15.1) inhibitory activity with an IC₅₀ value of 83.00 uM.
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])(CCSC)C(=O)N1[C@@]([H])(CCC1)C(=O)N[C@@]([H])(Cc1ccccc1)C(=O)N1[C@@]([H])(CCC1)C(=O)N[C@@]([H])(CCCCN)C(=O)N[C@@]([H])(Cc1ccc(O)cc1)C(=O)N1[C@@]([H])(CCC1)C(=O)N[C@@]([H])(C(C)C)C(=O)N[C@@]([H])(CCC(=O)O)C(=O)N1[C@@]([H])(CCC1)C(=O)O

Preparation method

Mode of preparation	Fermentation
Enzyme(s)/starter culture	The sodium caseinate substrate (2.5%, wt/vol) and glucose (0.5%, wt/vol) were inoculated with Lactobacillus animalis DPC6134 (1%, wt/vol) and incubated at 37°C for 24 h with mixing at 100 rpm and a constant pH of 7 by addition of 0.1 M NaOH.

Stability & Cytotoxicity

Peptide stability

Literature report:	The ACE-inhibitory activity of the L. animalis DPC6134 10-kDa fermentate may be resistant to digestion by the gastrointestinal enzymes pepsin and corolase PP in vitro.
EHP-Tool:	Enzymatic Hydrolysis Prediction Tool (EHP-Tool)

Peptide cytotoxicity

Literature report:	N.D
Prediction:	ToxinPred

Additional information

N.D

Database cross-references

[D1]

[D2]

[D3]

[D4]

Reference(s)

Primary literature	Hayes M, Stanton C, Slattery H, O'Sullivan O, Hill C, Fitzgerald GF, Ross RP. Casein fermentate of Lactobacillus animalis DPC6134 contains a range of novel propeptide angiotensin-converting enzyme inhibitors. Appl Environ Microbiol. 2007 Jul;73(14):4658-67. PMID: 17483275 DOI: 10.1128/AEM.00096-07
Other literature(s)	N.D
PubDate	2007