Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5329
Number of amino acids:114
Molecular Weight:12395.91 Da
Theoretical pI:5.04


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)1916.67%
Cysteine CYS (C)10.88%
Glutamic Acid GLU (E)87.02%
Aspartic Acid ASP (D)76.14%
Glycine GLY (G)76.14%
Phynylalanine PHE (F)54.39%
Isoleucine ILE (I)21.75%
Histidine HIS (H)32.63%
Lysine LYS (K)43.51%
Methionine MET (M)10.88%
Leucine LEU (L)97.89%
Asparagine ASN (N)32.63%
Glutamine GLN (Q)21.75%
Proline PRO (P)10.88%
Serine SER (S)76.14%
Arginine ARG (R)65.26%
Threonine THR (T)87.02%
Tryptophan TRP (W)32.63%
Valine VAL (V)1412.28%
Tyrosine TYR (Y)43.51%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC555
HydrogenH854
NitrogenN150
OxygenO169
SulphurS2

FormulaC555H854N150O169S2
Total Number of Atoms:1730


Total number of positively charged residues (ARG + LYS):10
Total number of negatively charged residues (ASP + GLU):15
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    22460
Absorption 0.1% (=1 g/l)    1.812,   assuming all pairs of CYS residues form cystines

Ext. coefficient    22460
Absorption 0.1% (=1 g/l)    1.812,   assuming all CYS residues are reduced
Aromaticity:0.105

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 27.93

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[32.46, 15.79, 32.46]

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:89.9123
Grand average of hydropathicity (GRAVY):0.08