Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4446
Number of amino acids:843
Molecular Weight:93725.33 Da
Theoretical pI:6.81


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)698.19%
Cysteine CYS (C)80.95%
Glutamic Acid GLU (E)485.69%
Aspartic Acid ASP (D)455.34%
Glycine GLY (G)597%
Phynylalanine PHE (F)333.91%
Isoleucine ILE (I)465.46%
Histidine HIS (H)232.73%
Lysine LYS (K)475.58%
Methionine MET (M)141.66%
Leucine LEU (L)799.37%
Asparagine ASN (N)374.39%
Glutamine GLN (Q)263.08%
Proline PRO (P)445.22%
Serine SER (S)769.02%
Arginine ARG (R)435.1%
Threonine THR (T)465.46%
Tryptophan TRP (W)212.49%
Valine VAL (V)536.29%
Tyrosine TYR (Y)263.08%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC4204
HydrogenH6525
NitrogenN1149
OxygenO1241
SulphurS22

FormulaC4204H6525N1149O1241S22
Total Number of Atoms:13141


Total number of positively charged residues (ARG + LYS):90
Total number of negatively charged residues (ASP + GLU):93
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    154740
Absorption 0.1% (=1 g/l)    1.651,   assuming all pairs of CYS residues form cystines

Ext. coefficient    154240
Absorption 0.1% (=1 g/l)    1.646,   assuming all CYS residues are reduced
Aromaticity:0.095

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 33.57

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.61, 25.62, 24.91]

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:84.2467
Grand average of hydropathicity (GRAVY):-0.29