Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4530
Number of amino acids:150
Molecular Weight:14569.15 Da
Theoretical pI:5.24


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)3120.67%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)42.67%
Aspartic Acid ASP (D)74.67%
Glycine GLY (G)64%
Phynylalanine PHE (F)85.33%
Isoleucine ILE (I)10.67%
Histidine HIS (H)00%
Lysine LYS (K)96%
Methionine MET (M)10.67%
Leucine LEU (L)42.67%
Asparagine ASN (N)00%
Glutamine GLN (Q)10.67%
Proline PRO (P)2315.33%
Serine SER (S)2617.33%
Arginine ARG (R)10.67%
Threonine THR (T)1711.33%
Tryptophan TRP (W)00%
Valine VAL (V)106.67%
Tyrosine TYR (Y)10.67%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC645
HydrogenH1011
NitrogenN163
OxygenO218
SulphurS1

FormulaC645H1011N163O218S1
Total Number of Atoms:2038


Total number of positively charged residues (ARG + LYS):10
Total number of negatively charged residues (ASP + GLU):11
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)    0.102
Aromaticity:0.060

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 70.19

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[16.00, 36.67, 26.67]

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:53.0001
Grand average of hydropathicity (GRAVY):-0.09