Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2645
Number of amino acids:34
Molecular Weight:3945.8 Da
Theoretical pI:9.52


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)25.88%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)25.88%
Aspartic Acid ASP (D)00%
Glycine GLY (G)12.94%
Phynylalanine PHE (F)514.71%
Isoleucine ILE (I)38.82%
Histidine HIS (H)00%
Lysine LYS (K)38.82%
Methionine MET (M)12.94%
Leucine LEU (L)514.71%
Asparagine ASN (N)12.94%
Glutamine GLN (Q)00%
Proline PRO (P)38.82%
Serine SER (S)12.94%
Arginine ARG (R)12.94%
Threonine THR (T)38.82%
Tryptophan TRP (W)00%
Valine VAL (V)25.88%
Tyrosine TYR (Y)12.94%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC193
HydrogenH299
NitrogenN41
OxygenO45
SulphurS1

FormulaC193H299N41O45S1
Total Number of Atoms:579


Total number of positively charged residues (ARG + LYS):4
Total number of negatively charged residues (ASP + GLU):2
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)    0.378
Aromaticity:0.176

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 20.62

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[47.06, 17.65, 29.41]

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:114.706
Grand average of hydropathicity (GRAVY):0.71