Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5522
Number of amino acids:285
Molecular Weight:30943.08 Da
Theoretical pI:6.33


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)227.72%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)62.11%
Aspartic Acid ASP (D)124.21%
Glycine GLY (G)207.02%
Phynylalanine PHE (F)248.42%
Isoleucine ILE (I)165.61%
Histidine HIS (H)31.05%
Lysine LYS (K)113.86%
Methionine MET (M)31.05%
Leucine LEU (L)248.42%
Asparagine ASN (N)227.72%
Glutamine GLN (Q)93.16%
Proline PRO (P)165.61%
Serine SER (S)3110.88%
Arginine ARG (R)62.11%
Threonine THR (T)217.37%
Tryptophan TRP (W)51.75%
Valine VAL (V)269.12%
Tyrosine TYR (Y)82.81%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1422
HydrogenH2156
NitrogenN356
OxygenO413
SulphurS3

FormulaC1422H2156N356O413S3
Total Number of Atoms:4350


Total number of positively charged residues (ARG + LYS):17
Total number of negatively charged residues (ASP + GLU):18
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    39420
Absorption 0.1% (=1 g/l)    1.274
Aromaticity:0.130

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 20.58

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[36.14, 31.23, 19.30]

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:88.9123
Grand average of hydropathicity (GRAVY):0.16