Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5558
Number of amino acids:514
Molecular Weight:56645.13 Da
Theoretical pI:9.22


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)407.78%
Cysteine CYS (C)193.7%
Glutamic Acid GLU (E)163.11%
Aspartic Acid ASP (D)244.67%
Glycine GLY (G)428.17%
Phynylalanine PHE (F)203.89%
Isoleucine ILE (I)468.95%
Histidine HIS (H)163.11%
Lysine LYS (K)397.59%
Methionine MET (M)163.11%
Leucine LEU (L)285.45%
Asparagine ASN (N)356.81%
Glutamine GLN (Q)234.47%
Proline PRO (P)224.28%
Serine SER (S)407.78%
Arginine ARG (R)214.09%
Threonine THR (T)224.28%
Tryptophan TRP (W)81.56%
Valine VAL (V)254.86%
Tyrosine TYR (Y)122.33%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2491
HydrogenH3940
NitrogenN714
OxygenO727
SulphurS35

FormulaC2491H3940N714O727S35
Total Number of Atoms:7907


Total number of positively charged residues (ARG + LYS):60
Total number of negatively charged residues (ASP + GLU):40
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    63005
Absorption 0.1% (=1 g/l)    1.112,   assuming all pairs of CYS residues form cystines

Ext. coefficient    61880
Absorption 0.1% (=1 g/l)    1.092,   assuming all CYS residues are reduced
Aromaticity:0.078

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.10

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[27.04, 27.04, 19.46]

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:78.035
Grand average of hydropathicity (GRAVY):-0.27