Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2634
Number of amino acids:35
Molecular Weight:3733.25 Da
Theoretical pI:5.71


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)38.57%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)25.71%
Glycine GLY (G)12.86%
Phynylalanine PHE (F)12.86%
Isoleucine ILE (I)38.57%
Histidine HIS (H)00%
Lysine LYS (K)12.86%
Methionine MET (M)12.86%
Leucine LEU (L)38.57%
Asparagine ASN (N)38.57%
Glutamine GLN (Q)12.86%
Proline PRO (P)411.43%
Serine SER (S)411.43%
Arginine ARG (R)12.86%
Threonine THR (T)411.43%
Tryptophan TRP (W)00%
Valine VAL (V)25.71%
Tyrosine TYR (Y)12.86%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC165
HydrogenH267
NitrogenN43
OxygenO53
SulphurS1

FormulaC165H267N43O53S1
Total Number of Atoms:529


Total number of positively charged residues (ARG + LYS):2
Total number of negatively charged residues (ASP + GLU):2
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    1490
Absorption 0.1% (=1 g/l)    0.399
Aromaticity:0.057

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 42.57

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[28.57, 34.29, 20.00]

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:92
Grand average of hydropathicity (GRAVY):-0.00