Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5078
Number of amino acids:845
Molecular Weight:95569.53 Da
Theoretical pI:9.45


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)435.09%
Cysteine CYS (C)141.66%
Glutamic Acid GLU (E)495.8%
Aspartic Acid ASP (D)313.67%
Glycine GLY (G)718.4%
Phynylalanine PHE (F)374.38%
Isoleucine ILE (I)414.85%
Histidine HIS (H)263.08%
Lysine LYS (K)849.94%
Methionine MET (M)172.01%
Leucine LEU (L)657.69%
Asparagine ASN (N)435.09%
Glutamine GLN (Q)303.55%
Proline PRO (P)414.85%
Serine SER (S)536.27%
Arginine ARG (R)344.02%
Threonine THR (T)596.98%
Tryptophan TRP (W)182.13%
Valine VAL (V)536.27%
Tyrosine TYR (Y)364.26%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC4309
HydrogenH6692
NitrogenN1174
OxygenO1227
SulphurS31

FormulaC4309H6692N1174O1227S31
Total Number of Atoms:13433


Total number of positively charged residues (ARG + LYS):118
Total number of negatively charged residues (ASP + GLU):80
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    153515
Absorption 0.1% (=1 g/l)    1.606,   assuming all pairs of CYS residues form cystines

Ext. coefficient    152640
Absorption 0.1% (=1 g/l)    1.597,   assuming all CYS residues are reduced
Aromaticity:0.108

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 31.35

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[29.59, 24.62, 20.59]

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:72.2012
Grand average of hydropathicity (GRAVY):-0.52