Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5510
Number of amino acids:410
Molecular Weight:46384.94 Da
Theoretical pI:5.39


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)215.12%
Cysteine CYS (C)10.24%
Glutamic Acid GLU (E)409.76%
Aspartic Acid ASP (D)204.88%
Glycine GLY (G)204.88%
Phynylalanine PHE (F)225.37%
Isoleucine ILE (I)245.85%
Histidine HIS (H)51.22%
Lysine LYS (K)297.07%
Methionine MET (M)10.24%
Leucine LEU (L)4210.24%
Asparagine ASN (N)368.78%
Glutamine GLN (Q)245.85%
Proline PRO (P)174.15%
Serine SER (S)399.51%
Arginine ARG (R)225.37%
Threonine THR (T)112.68%
Tryptophan TRP (W)00%
Valine VAL (V)276.59%
Tyrosine TYR (Y)92.2%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2047
HydrogenH3255
NitrogenN575
OxygenO650
SulphurS2

FormulaC2047H3255N575O650S2
Total Number of Atoms:6529


Total number of positively charged residues (ARG + LYS):51
Total number of negatively charged residues (ASP + GLU):60
Extinction Coefficient:This protein does not contain any Tryptophan residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient.

Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    13410
Absorption 0.1% (=1 g/l)    0.289,   assuming all pairs of CYS residues form cystines

Ext. coefficient    13410
Absorption 0.1% (=1 g/l)    0.289,   assuming all CYS residues are reduced
Aromaticity:0.076

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 49.14

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.24, 27.32, 25.37]

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:87
Grand average of hydropathicity (GRAVY):-0.61