Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4046
Number of amino acids:529
Molecular Weight:57924.02 Da
Theoretical pI:7.05


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)7914.93%
Cysteine CYS (C)71.32%
Glutamic Acid GLU (E)183.4%
Aspartic Acid ASP (D)427.94%
Glycine GLY (G)5810.96%
Phynylalanine PHE (F)163.02%
Isoleucine ILE (I)81.51%
Histidine HIS (H)163.02%
Lysine LYS (K)142.65%
Methionine MET (M)203.78%
Leucine LEU (L)397.37%
Asparagine ASN (N)173.21%
Glutamine GLN (Q)142.65%
Proline PRO (P)112.08%
Serine SER (S)244.54%
Arginine ARG (R)458.51%
Threonine THR (T)234.35%
Tryptophan TRP (W)122.27%
Valine VAL (V)387.18%
Tyrosine TYR (Y)285.29%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2539
HydrogenH3889
NitrogenN753
OxygenO756
SulphurS27

FormulaC2539H3889N753O756S27
Total Number of Atoms:7964


Total number of positively charged residues (ARG + LYS):59
Total number of negatively charged residues (ASP + GLU):60
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    108095
Absorption 0.1% (=1 g/l)    1.866,   assuming all pairs of CYS residues form cystines

Ext. coefficient    107720
Absorption 0.1% (=1 g/l)    1.860,   assuming all CYS residues are reduced
Aromaticity:0.106

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 36.80

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[26.65, 20.79, 29.49]

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:70.4158
Grand average of hydropathicity (GRAVY):-0.31