Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4984
Number of amino acids:285
Molecular Weight:30927.99 Da
Theoretical pI:5.66


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)238.07%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)93.16%
Aspartic Acid ASP (D)175.96%
Glycine GLY (G)134.56%
Phynylalanine PHE (F)144.91%
Isoleucine ILE (I)155.26%
Histidine HIS (H)62.11%
Lysine LYS (K)155.26%
Methionine MET (M)20.7%
Leucine LEU (L)3211.23%
Asparagine ASN (N)186.32%
Glutamine GLN (Q)72.46%
Proline PRO (P)165.61%
Serine SER (S)3512.28%
Arginine ARG (R)62.11%
Threonine THR (T)238.07%
Tryptophan TRP (W)62.11%
Valine VAL (V)238.07%
Tyrosine TYR (Y)51.75%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1398
HydrogenH2183
NitrogenN361
OxygenO426
SulphurS2

FormulaC1398H2183N361O426S2
Total Number of Atoms:4370


Total number of positively charged residues (ARG + LYS):21
Total number of negatively charged residues (ASP + GLU):26
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    40450
Absorption 0.1% (=1 g/l)    1.308
Aromaticity:0.088

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 30.44

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[33.33, 28.77, 23.16]

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:95.7896
Grand average of hydropathicity (GRAVY):0.00