ICE2/YIL090W 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] 20 4.1%
Arg[R] 17 3.5%
Asn[N] 25 5.1%
Asp[D] 11 2.2%
Cys[C] 14 2.9%
Gln[Q] 15 3.1%
Glu[E] 18 3.7%
Gly[G] 27 5.5%
His[H] 6 1.2%
Ile[I] 43 8.8%
Leu[L] 64 13.0%
Lys[K] 26 5.3%
Met[M] 7 1.4%
Phe[F] 37 7.5%
Pro[P] 14 2.9%
Ser[S] 49 10.0%
Thr[T] 30 6.1%
Trp[W] 13 2.6%
Tyr[Y] 27 5.5%
Val[V] 28 5.7%
Total Length 491

Instability index
Instability index (II) 32.90
This classifies the protein as stable

Atomic composition
Carbon 2632
Hydrogen 4013
Nitrogen 633
Oxygen 696
Sulfur 21
Total number of atoms 7995
Formula = C2632H4013N633O696S21

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 112605 M-1 cm-1
assuming NO Cys residues appear as half cystines 111730 M-1 cm-1
assuming all Cys residues are reduced 111730 M-1 cm-1
assuming all pairs of Cys residues form cystines 112605 M-1 cm-1

Aliphatic index
Aliphatic index 105.60

Coding Region Translation Calculations
Codon Bias 0.071
Codon Adaptation Index 0.125
Frequency of Optimal Codons 0.450
Hydropathicity of Protein 0.333
Aromaticity Score 0.157