Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4028
Number of amino acids:569
Molecular Weight:62685.62 Da
Theoretical pI:5.36


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)366.33%
Cysteine CYS (C)122.11%
Glutamic Acid GLU (E)223.87%
Aspartic Acid ASP (D)305.27%
Glycine GLY (G)478.26%
Phynylalanine PHE (F)213.69%
Isoleucine ILE (I)366.33%
Histidine HIS (H)40.7%
Lysine LYS (K)50.88%
Methionine MET (M)101.76%
Leucine LEU (L)478.26%
Asparagine ASN (N)335.8%
Glutamine GLN (Q)305.27%
Proline PRO (P)244.22%
Serine SER (S)518.96%
Arginine ARG (R)407.03%
Threonine THR (T)468.08%
Tryptophan TRP (W)122.11%
Valine VAL (V)457.91%
Tyrosine TYR (Y)183.16%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2757
HydrogenH4317
NitrogenN777
OxygenO852
SulphurS22

FormulaC2757H4317N777O852S22
Total Number of Atoms:8725


Total number of positively charged residues (ARG + LYS):45
Total number of negatively charged residues (ASP + GLU):52
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    93570
Absorption 0.1% (=1 g/l)    1.493,   assuming all pairs of CYS residues form cystines

Ext. coefficient    92820
Absorption 0.1% (=1 g/l)    1.481,   assuming all CYS residues are reduced
Aromaticity:0.090

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 35.14

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.46, 27.24, 20.21]

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:86.1512
Grand average of hydropathicity (GRAVY):-0.14