Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5246
Number of amino acids:615
Molecular Weight:69176.14 Da
Theoretical pI:7


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)386.18%
Cysteine CYS (C)162.6%
Glutamic Acid GLU (E)386.18%
Aspartic Acid ASP (D)345.53%
Glycine GLY (G)376.02%
Phynylalanine PHE (F)396.34%
Isoleucine ILE (I)365.85%
Histidine HIS (H)152.44%
Lysine LYS (K)355.69%
Methionine MET (M)91.46%
Leucine LEU (L)6510.57%
Asparagine ASN (N)264.23%
Glutamine GLN (Q)203.25%
Proline PRO (P)182.93%
Serine SER (S)599.59%
Arginine ARG (R)365.85%
Threonine THR (T)294.72%
Tryptophan TRP (W)71.14%
Valine VAL (V)436.99%
Tyrosine TYR (Y)152.44%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3094
HydrogenH4851
NitrogenN841
OxygenO909
SulphurS25

FormulaC3094H4851N841O909S25
Total Number of Atoms:9720


Total number of positively charged residues (ARG + LYS):71
Total number of negatively charged residues (ASP + GLU):72
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    61850
Absorption 0.1% (=1 g/l)    0.894,   assuming all pairs of CYS residues form cystines

Ext. coefficient    60850
Absorption 0.1% (=1 g/l)    0.880,   assuming all CYS residues are reduced
Aromaticity:0.099

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 37.64

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[33.33, 22.76, 24.39]

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:90.504
Grand average of hydropathicity (GRAVY):-0.12