Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4253
Number of amino acids:629
Molecular Weight:68664.25 Da
Theoretical pI:8.32


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)7812.4%
Cysteine CYS (C)60.95%
Glutamic Acid GLU (E)284.45%
Aspartic Acid ASP (D)304.77%
Glycine GLY (G)6910.97%
Phynylalanine PHE (F)253.97%
Isoleucine ILE (I)142.23%
Histidine HIS (H)121.91%
Lysine LYS (K)203.18%
Methionine MET (M)132.07%
Leucine LEU (L)518.11%
Asparagine ASN (N)243.82%
Glutamine GLN (Q)233.66%
Proline PRO (P)284.45%
Serine SER (S)406.36%
Arginine ARG (R)416.52%
Threonine THR (T)304.77%
Tryptophan TRP (W)142.23%
Valine VAL (V)467.31%
Tyrosine TYR (Y)375.88%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3076
HydrogenH4669
NitrogenN857
OxygenO900
SulphurS19

FormulaC3076H4669N857O900S19
Total Number of Atoms:9521


Total number of positively charged residues (ARG + LYS):61
Total number of negatively charged residues (ASP + GLU):58
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    132505
Absorption 0.1% (=1 g/l)    1.930,   assuming all pairs of CYS residues form cystines

Ext. coefficient    132130
Absorption 0.1% (=1 g/l)    1.924,   assuming all CYS residues are reduced
Aromaticity:0.121

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 36.39

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[29.73, 25.60, 27.03]

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:73.911
Grand average of hydropathicity (GRAVY):-0.24