Physicochemical Properties of Peptide



PPepDB ID:PPepDB_551
Number of amino acids:3
Molecular Weight:414.5 Da
Theoretical pI:5.52


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)00%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)00%
Glycine GLY (G)00%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)133.33%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)133.33%
Serine SER (S)00%
Arginine ARG (R)00%
Threonine THR (T)00%
Tryptophan TRP (W)133.33%
Valine VAL (V)00%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC22
HydrogenH30
NitrogenN4
OxygenO4
SulphurS0

FormulaC22H30N4O4S0
Total Number of Atoms:60


Total number of positively charged residues (ARG + LYS):0
Total number of negatively charged residues (ASP + GLU):0
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    5500
Absorption 0.1% (=1 g/l)    13.269
Aromaticity:0.333

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 6.67

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[66.67, 33.33, 33.33]

Amino acids in helix: V, I, Y, F, W, L || Amino acids in turn: N, P, G, S || Amino acids in sheet: E, M, A, L
Aliphatic index:130
Grand average of hydropathicity (GRAVY):0.43