Q0010 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] 0 0.0%
Arg[R] 1 0.8%
Asn[N] 8 6.2%
Asp[D] 3 2.3%
Cys[C] 1 0.8%
Gln[Q] 0 0.0%
Glu[E] 1 0.8%
Gly[G] 4 3.1%
His[H] 0 0.0%
Ile[I] 21 16.4%
Leu[L] 13 10.2%
Lys[K] 2 1.6%
Met[M] 9 7.0%
Phe[F] 11 8.6%
Pro[P] 9 7.0%
Ser[S] 8 6.2%
Thr[T] 5 3.9%
Trp[W] 2 1.6%
Tyr[Y] 22 17.2%
Val[V] 8 6.2%
Total Length 128

Instability index
Instability index (II) 44.78
This classifies the protein as unstable

Atomic composition
Carbon 775
Hydrogen 1107
Nitrogen 143
Oxygen 180
Sulfur 10
Total number of atoms 2215
Formula = C775H1107N143O180S10

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 43780 M-1 cm-1
assuming NO Cys residues appear as half cystines 43780 M-1 cm-1
assuming all Cys residues are reduced 43780 M-1 cm-1
assuming all pairs of Cys residues form cystines 43780 M-1 cm-1

Aliphatic index
Aliphatic index 121.72

Coding Region Translation Calculations
Codon Bias -0.366
Codon Adaptation Index 0.101
Frequency of Optimal Codons 0.368
Hydropathicity of Protein 0.916
Aromaticity Score 0.273