IOC2/YLR095C 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] 38 4.7%
Arg[R] 41 5.0%
Asn[N] 49 6.0%
Asp[D] 51 6.3%
Cys[C] 12 1.5%
Gln[Q] 52 6.4%
Glu[E] 68 8.4%
Gly[G] 29 3.6%
His[H] 20 2.5%
Ile[I] 58 7.1%
Leu[L] 68 8.4%
Lys[K] 56 6.9%
Met[M] 12 1.5%
Phe[F] 29 3.6%
Pro[P] 47 5.8%
Ser[S] 66 8.1%
Thr[T] 46 5.7%
Trp[W] 13 1.6%
Tyr[Y] 23 2.8%
Val[V] 34 4.2%
Total Length 812

Instability index
Instability index (II) 55.69
This classifies the protein as unstable

Atomic composition
Carbon 4124
Hydrogen 6463
Nitrogen 1145
Oxygen 1287
Sulfur 24
Total number of atoms 13043
Formula = C4124H6463N1145O1287S24

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 106520 M-1 cm-1
assuming NO Cys residues appear as half cystines 105770 M-1 cm-1
assuming all Cys residues are reduced 105770 M-1 cm-1
assuming all pairs of Cys residues form cystines 106520 M-1 cm-1

Aliphatic index
Aliphatic index 77.34

Coding Region Translation Calculations
Codon Bias 0.041
Codon Adaptation Index 0.120
Frequency of Optimal Codons 0.440
Hydropathicity of Protein -0.721
Aromaticity Score 0.080