Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5298
Number of amino acids:340
Molecular Weight:37312.38 Da
Theoretical pI:7.14


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)247.06%
Cysteine CYS (C)82.35%
Glutamic Acid GLU (E)113.24%
Aspartic Acid ASP (D)247.06%
Glycine GLY (G)247.06%
Phynylalanine PHE (F)133.82%
Isoleucine ILE (I)123.53%
Histidine HIS (H)51.47%
Lysine LYS (K)164.71%
Methionine MET (M)82.35%
Leucine LEU (L)3610.59%
Asparagine ASN (N)205.88%
Glutamine GLN (Q)102.94%
Proline PRO (P)175%
Serine SER (S)298.53%
Arginine ARG (R)195.59%
Threonine THR (T)236.76%
Tryptophan TRP (W)10.29%
Valine VAL (V)267.65%
Tyrosine TYR (Y)144.12%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1641
HydrogenH2598
NitrogenN454
OxygenO507
SulphurS16

FormulaC1641H2598N454O507S16
Total Number of Atoms:5216


Total number of positively charged residues (ARG + LYS):35
Total number of negatively charged residues (ASP + GLU):35
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    26860
Absorption 0.1% (=1 g/l)    0.720,   assuming all pairs of CYS residues form cystines

Ext. coefficient    26360
Absorption 0.1% (=1 g/l)    0.706,   assuming all CYS residues are reduced
Aromaticity:0.082

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 32.21

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.00, 26.47, 23.24]

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:84.294
Grand average of hydropathicity (GRAVY):-0.21