Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5137
Number of amino acids:290
Molecular Weight:32003.75 Da
Theoretical pI:6.48


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)144.83%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)72.41%
Aspartic Acid ASP (D)186.21%
Glycine GLY (G)186.21%
Phynylalanine PHE (F)155.17%
Isoleucine ILE (I)165.52%
Histidine HIS (H)41.38%
Lysine LYS (K)124.14%
Methionine MET (M)20.69%
Leucine LEU (L)3010.34%
Asparagine ASN (N)248.28%
Glutamine GLN (Q)113.79%
Proline PRO (P)155.17%
Serine SER (S)3612.41%
Arginine ARG (R)124.14%
Threonine THR (T)258.62%
Tryptophan TRP (W)51.72%
Valine VAL (V)175.86%
Tyrosine TYR (Y)93.1%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1429
HydrogenH2216
NitrogenN386
OxygenO446
SulphurS2

FormulaC1429H2216N386O446S2
Total Number of Atoms:4479


Total number of positively charged residues (ARG + LYS):24
Total number of negatively charged residues (ASP + GLU):25
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    40910
Absorption 0.1% (=1 g/l)    1.278
Aromaticity:0.100

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.17

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.72, 32.07, 18.28]

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:83.6895
Grand average of hydropathicity (GRAVY):-0.31