Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4108
Number of amino acids:735
Molecular Weight:81211.03 Da
Theoretical pI:5.46


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)385.17%
Cysteine CYS (C)304.08%
Glutamic Acid GLU (E)537.21%
Aspartic Acid ASP (D)375.03%
Glycine GLY (G)598.03%
Phynylalanine PHE (F)293.95%
Isoleucine ILE (I)415.58%
Histidine HIS (H)182.45%
Lysine LYS (K)405.44%
Methionine MET (M)152.04%
Leucine LEU (L)7410.07%
Asparagine ASN (N)415.58%
Glutamine GLN (Q)293.95%
Proline PRO (P)212.86%
Serine SER (S)618.3%
Arginine ARG (R)304.08%
Threonine THR (T)516.94%
Tryptophan TRP (W)40.54%
Valine VAL (V)425.71%
Tyrosine TYR (Y)222.99%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3542
HydrogenH5605
NitrogenN975
OxygenO1120
SulphurS45

FormulaC3542H5605N975O1120S45
Total Number of Atoms:11287


Total number of positively charged residues (ARG + LYS):70
Total number of negatively charged residues (ASP + GLU):90
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    56655
Absorption 0.1% (=1 g/l)    0.698,   assuming all pairs of CYS residues form cystines

Ext. coefficient    54780
Absorption 0.1% (=1 g/l)    0.675,   assuming all CYS residues are reduced
Aromaticity:0.075

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 39.06

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[28.84, 24.76, 24.49]

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:82.7618
Grand average of hydropathicity (GRAVY):-0.26