Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5074
Number of amino acids:583
Molecular Weight:66381.1 Da
Theoretical pI:7.02


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)315.32%
Cysteine CYS (C)40.69%
Glutamic Acid GLU (E)244.12%
Aspartic Acid ASP (D)417.03%
Glycine GLY (G)406.86%
Phynylalanine PHE (F)315.32%
Isoleucine ILE (I)335.66%
Histidine HIS (H)152.57%
Lysine LYS (K)356%
Methionine MET (M)111.89%
Leucine LEU (L)457.72%
Asparagine ASN (N)315.32%
Glutamine GLN (Q)183.09%
Proline PRO (P)356%
Serine SER (S)539.09%
Arginine ARG (R)294.97%
Threonine THR (T)233.95%
Tryptophan TRP (W)183.09%
Valine VAL (V)406.86%
Tyrosine TYR (Y)264.46%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3017
HydrogenH4554
NitrogenN802
OxygenO865
SulphurS15

FormulaC3017H4554N802O865S15
Total Number of Atoms:9253


Total number of positively charged residues (ARG + LYS):64
Total number of negatively charged residues (ASP + GLU):65
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    137990
Absorption 0.1% (=1 g/l)    2.079,   assuming all pairs of CYS residues form cystines

Ext. coefficient    137740
Absorption 0.1% (=1 g/l)    2.075,   assuming all CYS residues are reduced
Aromaticity:0.129

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.71

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[33.10, 27.27, 19.04]

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:77.3928
Grand average of hydropathicity (GRAVY):-0.40