Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6133
Number of amino acids:92
Molecular Weight:10283.02 Da
Theoretical pI:8.68


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)33.26%
Cysteine CYS (C)88.7%
Glutamic Acid GLU (E)55.43%
Aspartic Acid ASP (D)55.43%
Glycine GLY (G)88.7%
Phynylalanine PHE (F)44.35%
Isoleucine ILE (I)22.17%
Histidine HIS (H)22.17%
Lysine LYS (K)88.7%
Methionine MET (M)66.52%
Leucine LEU (L)55.43%
Asparagine ASN (N)44.35%
Glutamine GLN (Q)00%
Proline PRO (P)66.52%
Serine SER (S)88.7%
Arginine ARG (R)66.52%
Threonine THR (T)22.17%
Tryptophan TRP (W)11.09%
Valine VAL (V)77.61%
Tyrosine TYR (Y)22.17%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC440
HydrogenH701
NitrogenN127
OxygenO129
SulphurS14

FormulaC440H701N127O129S14
Total Number of Atoms:1411


Total number of positively charged residues (ARG + LYS):14
Total number of negatively charged residues (ASP + GLU):10
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    8980
Absorption 0.1% (=1 g/l)    0.873,   assuming all pairs of CYS residues form cystines

Ext. coefficient    8480
Absorption 0.1% (=1 g/l)    0.825,   assuming all CYS residues are reduced
Aromaticity:0.076

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 39.07

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[22.83, 28.26, 20.65]

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:55
Grand average of hydropathicity (GRAVY):-0.35