HST3/YOR025W 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] 15 3.4%
Arg[R] 29 6.5%
Asn[N] 22 4.9%
Asp[D] 31 6.9%
Cys[C] 12 2.7%
Gln[Q] 19 4.3%
Glu[E] 21 4.7%
Gly[G] 27 6.0%
His[H] 9 2.0%
Ile[I] 36 8.1%
Leu[L] 49 11.0%
Lys[K] 39 8.7%
Met[M] 6 1.3%
Phe[F] 15 3.4%
Pro[P] 20 4.5%
Ser[S] 43 9.6%
Thr[T] 26 5.8%
Trp[W] 6 1.3%
Tyr[Y] 7 1.6%
Val[V] 15 3.4%
Total Length 447

Instability index
Instability index (II) 46.59
This classifies the protein as unstable

Atomic composition
Carbon 2221
Hydrogen 3602
Nitrogen 638
Oxygen 669
Sulfur 18
Total number of atoms 7148
Formula = C2221H3602N638O669S18

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 44180 M-1 cm-1
assuming NO Cys residues appear as half cystines 43430 M-1 cm-1
assuming all Cys residues are reduced 43430 M-1 cm-1
assuming all pairs of Cys residues form cystines 44180 M-1 cm-1

Aliphatic index
Aliphatic index 87.25

Coding Region Translation Calculations
Codon Bias 0.089
Codon Adaptation Index 0.125
Frequency of Optimal Codons 0.455
Hydropathicity of Protein -0.504
Aromaticity Score 0.063