Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6068
Number of amino acids:73
Molecular Weight:7601.8 Da
Theoretical pI:4.41


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)1115.07%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)34.11%
Glycine GLY (G)45.48%
Phynylalanine PHE (F)68.22%
Isoleucine ILE (I)45.48%
Histidine HIS (H)11.37%
Lysine LYS (K)00%
Methionine MET (M)22.74%
Leucine LEU (L)1013.7%
Asparagine ASN (N)11.37%
Glutamine GLN (Q)22.74%
Proline PRO (P)45.48%
Serine SER (S)1115.07%
Arginine ARG (R)11.37%
Threonine THR (T)45.48%
Tryptophan TRP (W)00%
Valine VAL (V)68.22%
Tyrosine TYR (Y)34.11%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC353
HydrogenH543
NitrogenN81
OxygenO101
SulphurS2

FormulaC353H543N81O101S2
Total Number of Atoms:1080


Total number of positively charged residues (ARG + LYS):1
Total number of negatively charged residues (ASP + GLU):3
Extinction Coefficient:This protein does not contain any Tryptophan residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient.

Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    4470
Absorption 0.1% (=1 g/l)    0.588
Aromaticity:0.123

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.49

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[39.73, 27.40, 31.51]

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:113.699
Grand average of hydropathicity (GRAVY):0.95