Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4177
Number of amino acids:757
Molecular Weight:82602.29 Da
Theoretical pI:7.61


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)455.94%
Cysteine CYS (C)131.72%
Glutamic Acid GLU (E)405.28%
Aspartic Acid ASP (D)334.36%
Glycine GLY (G)425.55%
Phynylalanine PHE (F)344.49%
Isoleucine ILE (I)405.28%
Histidine HIS (H)91.19%
Lysine LYS (K)445.81%
Methionine MET (M)60.79%
Leucine LEU (L)10013.21%
Asparagine ASN (N)486.34%
Glutamine GLN (Q)222.91%
Proline PRO (P)466.08%
Serine SER (S)8611.36%
Arginine ARG (R)303.96%
Threonine THR (T)577.53%
Tryptophan TRP (W)50.66%
Valine VAL (V)435.68%
Tyrosine TYR (Y)141.85%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3678
HydrogenH5892
NitrogenN984
OxygenO1131
SulphurS19

FormulaC3678H5892N984O1131S19
Total Number of Atoms:11704


Total number of positively charged residues (ARG + LYS):74
Total number of negatively charged residues (ASP + GLU):73
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    49110
Absorption 0.1% (=1 g/l)    0.595,   assuming all pairs of CYS residues form cystines

Ext. coefficient    48360
Absorption 0.1% (=1 g/l)    0.585,   assuming all CYS residues are reduced
Aromaticity:0.070

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 37.85

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.18, 29.33, 25.23]

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:94.5441
Grand average of hydropathicity (GRAVY):-0.13