Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4333
Number of amino acids:534
Molecular Weight:58007.51 Da
Theoretical pI:9.61


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)366.74%
Cysteine CYS (C)132.43%
Glutamic Acid GLU (E)142.62%
Aspartic Acid ASP (D)163%
Glycine GLY (G)295.43%
Phynylalanine PHE (F)203.75%
Isoleucine ILE (I)264.87%
Histidine HIS (H)40.75%
Lysine LYS (K)458.43%
Methionine MET (M)91.69%
Leucine LEU (L)397.3%
Asparagine ASN (N)224.12%
Glutamine GLN (Q)183.37%
Proline PRO (P)10018.73%
Serine SER (S)448.24%
Arginine ARG (R)163%
Threonine THR (T)305.62%
Tryptophan TRP (W)50.94%
Valine VAL (V)264.87%
Tyrosine TYR (Y)224.12%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2657
HydrogenH4136
NitrogenN680
OxygenO731
SulphurS22

FormulaC2657H4136N680O731S22
Total Number of Atoms:8226


Total number of positively charged residues (ARG + LYS):61
Total number of negatively charged residues (ASP + GLU):30
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    61030
Absorption 0.1% (=1 g/l)    1.052,   assuming all pairs of CYS residues form cystines

Ext. coefficient    60280
Absorption 0.1% (=1 g/l)    1.039,   assuming all CYS residues are reduced
Aromaticity:0.088

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 57.62

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[25.84, 36.52, 18.35]

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:68.3333
Grand average of hydropathicity (GRAVY):-0.41