Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5159
Number of amino acids:592
Molecular Weight:67397.78 Da
Theoretical pI:8.75


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)376.25%
Cysteine CYS (C)71.18%
Glutamic Acid GLU (E)203.38%
Aspartic Acid ASP (D)396.59%
Glycine GLY (G)406.76%
Phynylalanine PHE (F)315.24%
Isoleucine ILE (I)315.24%
Histidine HIS (H)172.87%
Lysine LYS (K)396.59%
Methionine MET (M)122.03%
Leucine LEU (L)447.43%
Asparagine ASN (N)315.24%
Glutamine GLN (Q)183.04%
Proline PRO (P)325.41%
Serine SER (S)447.43%
Arginine ARG (R)274.56%
Threonine THR (T)294.9%
Tryptophan TRP (W)203.38%
Valine VAL (V)477.94%
Tyrosine TYR (Y)274.56%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3075
HydrogenH4643
NitrogenN815
OxygenO860
SulphurS19

FormulaC3075H4643N815O860S19
Total Number of Atoms:9412


Total number of positively charged residues (ARG + LYS):66
Total number of negatively charged residues (ASP + GLU):59
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    150605
Absorption 0.1% (=1 g/l)    2.235,   assuming all pairs of CYS residues form cystines

Ext. coefficient    150230
Absorption 0.1% (=1 g/l)    2.229,   assuming all CYS residues are reduced
Aromaticity:0.132

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 31.15

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[33.78, 24.83, 19.09]

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:78.6824
Grand average of hydropathicity (GRAVY):-0.31