Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5179
Number of amino acids:732
Molecular Weight:81443.51 Da
Theoretical pI:8.49


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)476.42%
Cysteine CYS (C)121.64%
Glutamic Acid GLU (E)324.37%
Aspartic Acid ASP (D)334.51%
Glycine GLY (G)739.97%
Phynylalanine PHE (F)344.64%
Isoleucine ILE (I)375.05%
Histidine HIS (H)202.73%
Lysine LYS (K)435.87%
Methionine MET (M)152.05%
Leucine LEU (L)527.1%
Asparagine ASN (N)364.92%
Glutamine GLN (Q)233.14%
Proline PRO (P)364.92%
Serine SER (S)516.97%
Arginine ARG (R)283.83%
Threonine THR (T)486.56%
Tryptophan TRP (W)212.87%
Valine VAL (V)557.51%
Tyrosine TYR (Y)364.92%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3690
HydrogenH5589
NitrogenN979
OxygenO1057
SulphurS27

FormulaC3690H5589N979O1057S27
Total Number of Atoms:11342


Total number of positively charged residues (ARG + LYS):71
Total number of negatively charged residues (ASP + GLU):65
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    169890
Absorption 0.1% (=1 g/l)    2.086,   assuming all pairs of CYS residues form cystines

Ext. coefficient    169140
Absorption 0.1% (=1 g/l)    2.077,   assuming all CYS residues are reduced
Aromaticity:0.124

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 33.25

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[32.10, 26.78, 19.95]

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:75.6284
Grand average of hydropathicity (GRAVY):-0.25