Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6100
Number of amino acids:61
Molecular Weight:5970.04 Da
Theoretical pI:5.48


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)1626.23%
Cysteine CYS (C)11.64%
Glutamic Acid GLU (E)34.92%
Aspartic Acid ASP (D)00%
Glycine GLY (G)58.2%
Phynylalanine PHE (F)23.28%
Isoleucine ILE (I)11.64%
Histidine HIS (H)11.64%
Lysine LYS (K)23.28%
Methionine MET (M)46.56%
Leucine LEU (L)711.48%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)46.56%
Serine SER (S)711.48%
Arginine ARG (R)00%
Threonine THR (T)11.64%
Tryptophan TRP (W)00%
Valine VAL (V)58.2%
Tyrosine TYR (Y)23.28%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC268
HydrogenH429
NitrogenN65
OxygenO78
SulphurS5

FormulaC268H429N65O78S5
Total Number of Atoms:845


Total number of positively charged residues (ARG + LYS):2
Total number of negatively charged residues (ASP + GLU):3
Extinction Coefficient:This protein does not contain any Tryptophan residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient.

Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    2980
Absorption 0.1% (=1 g/l)    0.499,   assuming all pairs of CYS residues form cystines

Ext. coefficient    2980
Absorption 0.1% (=1 g/l)    0.499,   assuming all CYS residues are reduced
Aromaticity:0.066

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 37.94

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[27.87, 26.23, 49.18]

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:101.147
Grand average of hydropathicity (GRAVY):0.95