Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4534
Number of amino acids:322
Molecular Weight:34646.18 Da
Theoretical pI:7.68


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)3310.25%
Cysteine CYS (C)103.11%
Glutamic Acid GLU (E)113.42%
Aspartic Acid ASP (D)206.21%
Glycine GLY (G)237.14%
Phynylalanine PHE (F)164.97%
Isoleucine ILE (I)206.21%
Histidine HIS (H)41.24%
Lysine LYS (K)123.73%
Methionine MET (M)61.86%
Leucine LEU (L)299.01%
Asparagine ASN (N)185.59%
Glutamine GLN (Q)144.35%
Proline PRO (P)134.04%
Serine SER (S)3410.56%
Arginine ARG (R)206.21%
Threonine THR (T)206.21%
Tryptophan TRP (W)10.31%
Valine VAL (V)144.35%
Tyrosine TYR (Y)41.24%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1500
HydrogenH2405
NitrogenN435
OxygenO475
SulphurS16

FormulaC1500H2405N435O475S16
Total Number of Atoms:4831


Total number of positively charged residues (ARG + LYS):32
Total number of negatively charged residues (ASP + GLU):31
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    12085
Absorption 0.1% (=1 g/l)    0.349,   assuming all pairs of CYS residues form cystines

Ext. coefficient    11460
Absorption 0.1% (=1 g/l)    0.331,   assuming all CYS residues are reduced
Aromaticity:0.065

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.39

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[26.09, 27.33, 24.53]

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:82.2049
Grand average of hydropathicity (GRAVY):-0.15