Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4188
Number of amino acids:434
Molecular Weight:48457.12 Da
Theoretical pI:9.05


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)327.37%
Cysteine CYS (C)92.07%
Glutamic Acid GLU (E)194.38%
Aspartic Acid ASP (D)255.76%
Glycine GLY (G)378.53%
Phynylalanine PHE (F)204.61%
Isoleucine ILE (I)347.83%
Histidine HIS (H)163.69%
Lysine LYS (K)317.14%
Methionine MET (M)71.61%
Leucine LEU (L)265.99%
Asparagine ASN (N)225.07%
Glutamine GLN (Q)163.69%
Proline PRO (P)133%
Serine SER (S)317.14%
Arginine ARG (R)235.3%
Threonine THR (T)255.76%
Tryptophan TRP (W)102.3%
Valine VAL (V)276.22%
Tyrosine TYR (Y)112.53%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2157
HydrogenH3362
NitrogenN614
OxygenO628
SulphurS16

FormulaC2157H3362N614O628S16
Total Number of Atoms:6777


Total number of positively charged residues (ARG + LYS):54
Total number of negatively charged residues (ASP + GLU):44
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    71890
Absorption 0.1% (=1 g/l)    1.484,   assuming all pairs of CYS residues form cystines

Ext. coefficient    71390
Absorption 0.1% (=1 g/l)    1.473,   assuming all CYS residues are reduced
Aromaticity:0.094

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 29.19

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[29.49, 23.73, 19.35]

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:79.3318
Grand average of hydropathicity (GRAVY):-0.34