Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2628
Number of amino acids:49
Molecular Weight:5779.58 Da
Theoretical pI:10.25


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)24.08%
Cysteine CYS (C)12.04%
Glutamic Acid GLU (E)48.16%
Aspartic Acid ASP (D)36.12%
Glycine GLY (G)12.04%
Phynylalanine PHE (F)12.04%
Isoleucine ILE (I)24.08%
Histidine HIS (H)36.12%
Lysine LYS (K)36.12%
Methionine MET (M)24.08%
Leucine LEU (L)48.16%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)24.08%
Serine SER (S)918.37%
Arginine ARG (R)816.33%
Threonine THR (T)12.04%
Tryptophan TRP (W)12.04%
Valine VAL (V)24.08%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC244
HydrogenH403
NitrogenN83
OxygenO74
SulphurS3

FormulaC244H403N83O74S3
Total Number of Atoms:807


Total number of positively charged residues (ARG + LYS):11
Total number of negatively charged residues (ASP + GLU):7
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)    0.952,   assuming all pairs of CYS residues form cystines

Ext. coefficient    5500
Absorption 0.1% (=1 g/l)    0.952,   assuming all CYS residues are reduced
Aromaticity:0.041

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 105.78

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[20.41, 24.49, 24.49]

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:63.6735
Grand average of hydropathicity (GRAVY):-1.00