Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2646
Number of amino acids:35
Molecular Weight:3973.78 Da
Theoretical pI:8.25


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)25.71%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)25.71%
Aspartic Acid ASP (D)12.86%
Glycine GLY (G)38.57%
Phynylalanine PHE (F)514.29%
Isoleucine ILE (I)38.57%
Histidine HIS (H)00%
Lysine LYS (K)25.71%
Methionine MET (M)12.86%
Leucine LEU (L)411.43%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)38.57%
Serine SER (S)12.86%
Arginine ARG (R)25.71%
Threonine THR (T)25.71%
Tryptophan TRP (W)00%
Valine VAL (V)38.57%
Tyrosine TYR (Y)12.86%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC192
HydrogenH295
NitrogenN43
OxygenO46
SulphurS1

FormulaC192H295N43O46S1
Total Number of Atoms:577


Total number of positively charged residues (ARG + LYS):4
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    1490
Absorption 0.1% (=1 g/l)    0.375
Aromaticity:0.171

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 14.68

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[45.71, 20.00, 25.71]

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:108.572
Grand average of hydropathicity (GRAVY):0.69