Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4607
Number of amino acids:563
Molecular Weight:61200.07 Da
Theoretical pI:5.45


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)346.04%
Cysteine CYS (C)50.89%
Glutamic Acid GLU (E)244.26%
Aspartic Acid ASP (D)325.68%
Glycine GLY (G)488.53%
Phynylalanine PHE (F)284.97%
Isoleucine ILE (I)264.62%
Histidine HIS (H)152.66%
Lysine LYS (K)223.91%
Methionine MET (M)61.07%
Leucine LEU (L)5910.48%
Asparagine ASN (N)284.97%
Glutamine GLN (Q)111.95%
Proline PRO (P)346.04%
Serine SER (S)5710.12%
Arginine ARG (R)193.37%
Threonine THR (T)386.75%
Tryptophan TRP (W)40.71%
Valine VAL (V)478.35%
Tyrosine TYR (Y)264.62%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2762
HydrogenH4249
NitrogenN715
OxygenO836
SulphurS11

FormulaC2762H4249N715O836S11
Total Number of Atoms:8573


Total number of positively charged residues (ARG + LYS):41
Total number of negatively charged residues (ASP + GLU):56
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    60990
Absorption 0.1% (=1 g/l)    0.997,   assuming all pairs of CYS residues form cystines

Ext. coefficient    60740
Absorption 0.1% (=1 g/l)    0.992,   assuming all CYS residues are reduced
Aromaticity:0.103

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 30.47

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[33.75, 29.66, 21.85]

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:89.1298
Grand average of hydropathicity (GRAVY):-0.06