Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4050
Number of amino acids:827
Molecular Weight:91548.53 Da
Theoretical pI:5.59


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)627.5%
Cysteine CYS (C)202.42%
Glutamic Acid GLU (E)465.56%
Aspartic Acid ASP (D)404.84%
Glycine GLY (G)8410.16%
Phynylalanine PHE (F)344.11%
Isoleucine ILE (I)414.96%
Histidine HIS (H)182.18%
Lysine LYS (K)465.56%
Methionine MET (M)192.3%
Leucine LEU (L)516.17%
Asparagine ASN (N)374.47%
Glutamine GLN (Q)313.75%
Proline PRO (P)465.56%
Serine SER (S)556.65%
Arginine ARG (R)232.78%
Threonine THR (T)475.68%
Tryptophan TRP (W)313.75%
Valine VAL (V)597.13%
Tyrosine TYR (Y)374.47%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC4134
HydrogenH6199
NitrogenN1077
OxygenO1207
SulphurS39

FormulaC4134H6199N1077O1207S39
Total Number of Atoms:12656


Total number of positively charged residues (ARG + LYS):69
Total number of negatively charged residues (ASP + GLU):86
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    226880
Absorption 0.1% (=1 g/l)    2.478,   assuming all pairs of CYS residues form cystines

Ext. coefficient    225630
Absorption 0.1% (=1 g/l)    2.465,   assuming all CYS residues are reduced
Aromaticity:0.123

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 36.55

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.59, 26.84, 21.52]

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:71.572
Grand average of hydropathicity (GRAVY):-0.27