Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4472
Number of amino acids:96
Molecular Weight:10870.58 Da
Theoretical pI:7.27


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)66.25%
Cysteine CYS (C)11.04%
Glutamic Acid GLU (E)66.25%
Aspartic Acid ASP (D)44.17%
Glycine GLY (G)66.25%
Phynylalanine PHE (F)55.21%
Isoleucine ILE (I)00%
Histidine HIS (H)77.29%
Lysine LYS (K)66.25%
Methionine MET (M)66.25%
Leucine LEU (L)1515.63%
Asparagine ASN (N)55.21%
Glutamine GLN (Q)44.17%
Proline PRO (P)77.29%
Serine SER (S)66.25%
Arginine ARG (R)44.17%
Threonine THR (T)33.13%
Tryptophan TRP (W)11.04%
Valine VAL (V)44.17%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC482
HydrogenH758
NitrogenN138
OxygenO135
SulphurS7

FormulaC482H758N138O135S7
Total Number of Atoms:1520


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

Ext. coefficient    5500
Absorption 0.1% (=1 g/l)    0.506,   assuming all pairs of CYS residues form cystines

Ext. coefficient    5500
Absorption 0.1% (=1 g/l)    0.506,   assuming all CYS residues are reduced
Aromaticity:0.062

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 26.40

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[26.04, 25.00, 34.38]

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:79.2708
Grand average of hydropathicity (GRAVY):-0.41