Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5189
Number of amino acids:437
Molecular Weight:49504.58 Da
Theoretical pI:6.4


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)204.58%
Cysteine CYS (C)81.83%
Glutamic Acid GLU (E)255.72%
Aspartic Acid ASP (D)194.35%
Glycine GLY (G)317.09%
Phynylalanine PHE (F)184.12%
Isoleucine ILE (I)306.86%
Histidine HIS (H)102.29%
Lysine LYS (K)276.18%
Methionine MET (M)81.83%
Leucine LEU (L)4410.07%
Asparagine ASN (N)235.26%
Glutamine GLN (Q)122.75%
Proline PRO (P)255.72%
Serine SER (S)409.15%
Arginine ARG (R)143.2%
Threonine THR (T)214.81%
Tryptophan TRP (W)112.52%
Valine VAL (V)255.72%
Tyrosine TYR (Y)265.95%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2260
HydrogenH3440
NitrogenN572
OxygenO648
SulphurS16

FormulaC2260H3440N572O648S16
Total Number of Atoms:6936


Total number of positively charged residues (ARG + LYS):41
Total number of negatively charged residues (ASP + GLU):44
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    99740
Absorption 0.1% (=1 g/l)    2.015,   assuming all pairs of CYS residues form cystines

Ext. coefficient    99240
Absorption 0.1% (=1 g/l)    2.005,   assuming all CYS residues are reduced
Aromaticity:0.126

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.47

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[35.24, 27.23, 22.20]

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:87.208
Grand average of hydropathicity (GRAVY):-0.21