HHT2/YNL031C 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] 16 11.8%
Arg[R] 17 12.5%
Asn[N] 1 0.7%
Asp[D] 4 2.9%
Cys[C] 0 0.0%
Gln[Q] 8 5.9%
Glu[E] 7 5.1%
Gly[G] 7 5.1%
His[H] 2 1.5%
Ile[I] 7 5.1%
Leu[L] 13 9.6%
Lys[K] 16 11.8%
Met[M] 1 0.7%
Phe[F] 5 3.7%
Pro[P] 5 3.7%
Ser[S] 10 7.4%
Thr[T] 9 6.6%
Trp[W] 0 0.0%
Tyr[Y] 2 1.5%
Val[V] 6 4.4%
Total Length 136

Instability index
Instability index (II) 46.28
This classifies the protein as unstable

Atomic composition
Carbon 676
Hydrogen 1146
Nitrogen 216
Oxygen 189
Sulfur 1
Total number of atoms 2228
Formula = C676H1146N216O189S1

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 2980 M-1 cm-1

Aliphatic index
Aliphatic index 81.91

Coding Region Translation Calculations
Codon Bias 0.624
Codon Adaptation Index 0.563
Frequency of Optimal Codons 0.763
Hydropathicity of Protein -0.678
Aromaticity Score 0.051