Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5371
Number of amino acids:294
Molecular Weight:32393.35 Da
Theoretical pI:8.98


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)186.12%
Cysteine CYS (C)72.38%
Glutamic Acid GLU (E)72.38%
Aspartic Acid ASP (D)134.42%
Glycine GLY (G)3010.2%
Phynylalanine PHE (F)155.1%
Isoleucine ILE (I)196.46%
Histidine HIS (H)41.36%
Lysine LYS (K)186.12%
Methionine MET (M)51.7%
Leucine LEU (L)3411.56%
Asparagine ASN (N)165.44%
Glutamine GLN (Q)175.78%
Proline PRO (P)144.76%
Serine SER (S)237.82%
Arginine ARG (R)93.06%
Threonine THR (T)113.74%
Tryptophan TRP (W)62.04%
Valine VAL (V)165.44%
Tyrosine TYR (Y)124.08%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1472
HydrogenH2280
NitrogenN386
OxygenO414
SulphurS12

FormulaC1472H2280N386O414S12
Total Number of Atoms:4564


Total number of positively charged residues (ARG + LYS):27
Total number of negatively charged residues (ASP + GLU):20
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    51255
Absorption 0.1% (=1 g/l)    1.582,   assuming all pairs of CYS residues form cystines

Ext. coefficient    50880
Absorption 0.1% (=1 g/l)    1.571,   assuming all CYS residues are reduced
Aromaticity:0.112

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.91

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[34.69, 28.23, 21.77]

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:92.2108
Grand average of hydropathicity (GRAVY):-0.02