Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5064
Number of amino acids:670
Molecular Weight:71932.82 Da
Theoretical pI:5.06


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)7911.79%
Cysteine CYS (C)50.75%
Glutamic Acid GLU (E)243.58%
Aspartic Acid ASP (D)548.06%
Glycine GLY (G)598.81%
Phynylalanine PHE (F)182.69%
Isoleucine ILE (I)162.39%
Histidine HIS (H)152.24%
Lysine LYS (K)213.13%
Methionine MET (M)81.19%
Leucine LEU (L)629.25%
Asparagine ASN (N)182.69%
Glutamine GLN (Q)172.54%
Proline PRO (P)456.72%
Serine SER (S)456.72%
Arginine ARG (R)345.07%
Threonine THR (T)456.72%
Tryptophan TRP (W)182.69%
Valine VAL (V)649.55%
Tyrosine TYR (Y)233.43%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3218
HydrogenH4956
NitrogenN876
OxygenO975
SulphurS13

FormulaC3218H4956N876O975S13
Total Number of Atoms:10038


Total number of positively charged residues (ARG + LYS):55
Total number of negatively charged residues (ASP + GLU):78
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    133520
Absorption 0.1% (=1 g/l)    1.856,   assuming all pairs of CYS residues form cystines

Ext. coefficient    133270
Absorption 0.1% (=1 g/l)    1.853,   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 : 34.17

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.00, 24.93, 25.82]

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:84.8955
Grand average of hydropathicity (GRAVY):-0.14