Q0255 Additional Physico-chemical Properties Help

Physico-chemical properties were determined using the ProtParam tool available through ExPASy to analyze the primary protein sequence for atomic composition, extinction coefficient, estimated half-life, instability index and aliphatic index. Transcript translation calculations were determined using CodonW.


A.A. Composition
Ala[A] 7 1.5%
Arg[R] 12 2.5%
Asn[N] 74 15.7%
Asp[D] 25 5.3%
Cys[C] 4 0.8%
Gln[Q] 6 1.3%
Glu[E] 11 2.3%
Gly[G] 15 3.2%
His[H] 5 1.1%
Ile[I] 48 10.2%
Leu[L] 46 9.7%
Lys[K] 56 11.9%
Met[M] 23 4.9%
Phe[F] 20 4.2%
Pro[P] 12 2.5%
Ser[S] 24 5.1%
Thr[T] 24 5.1%
Trp[W] 9 1.9%
Tyr[Y] 37 7.8%
Val[V] 14 3.0%
Total Length 472

Instability index
Instability index (II) 41.29
This classifies the protein as unstable

Atomic composition
Carbon 2571
Hydrogen 3989
Nitrogen 663
Oxygen 710
Sulfur 27
Total number of atoms 7960
Formula = C2571H3989N663O710S27

Estimated half-life
Escherichia coli (in vivo) >10 hours
mammalian reticulocytes (in vitro) 30 hours
yeast (in vivo) >20 hours

Extinction Coefficients at 280 nm
assuming ALL Cys residues appear as half cystines 104880 M-1 cm-1
assuming NO Cys residues appear as half cystines 104630 M-1 cm-1
assuming all Cys residues are reduced 104630 M-1 cm-1
assuming all pairs of Cys residues form cystines 104880 M-1 cm-1

Aliphatic index
Aliphatic index 87.75

Coding Region Translation Calculations
Codon Bias -0.419
Codon Adaptation Index 0.125
Frequency of Optimal Codons 0.295
Hydropathicity of Protein -0.508
Aromaticity Score 0.140