Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5349
Number of amino acids:314
Molecular Weight:35090.51 Da
Theoretical pI:6.07


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)196.05%
Cysteine CYS (C)20.64%
Glutamic Acid GLU (E)103.18%
Aspartic Acid ASP (D)196.05%
Glycine GLY (G)185.73%
Phynylalanine PHE (F)257.96%
Isoleucine ILE (I)134.14%
Histidine HIS (H)82.55%
Lysine LYS (K)165.1%
Methionine MET (M)51.59%
Leucine LEU (L)288.92%
Asparagine ASN (N)175.41%
Glutamine GLN (Q)144.46%
Proline PRO (P)134.14%
Serine SER (S)4313.69%
Arginine ARG (R)92.87%
Threonine THR (T)113.5%
Tryptophan TRP (W)51.59%
Valine VAL (V)268.28%
Tyrosine TYR (Y)134.14%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1597
HydrogenH2401
NitrogenN409
OxygenO471
SulphurS7

FormulaC1597H2401N409O471S7
Total Number of Atoms:4885


Total number of positively charged residues (ARG + LYS):25
Total number of negatively charged residues (ASP + GLU):29
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    46995
Absorption 0.1% (=1 g/l)    1.339,   assuming all pairs of CYS residues form cystines

Ext. coefficient    46870
Absorption 0.1% (=1 g/l)    1.336,   assuming all CYS residues are reduced
Aromaticity:0.137

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 37.12

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[35.03, 28.98, 19.75]

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:80.9873
Grand average of hydropathicity (GRAVY):-0.12