HST2/YPL015C 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] 22 6.2%
Arg[R] 11 3.1%
Asn[N] 12 3.4%
Asp[D] 26 7.3%
Cys[C] 7 2.0%
Gln[Q] 15 4.2%
Glu[E] 27 7.6%
Gly[G] 21 5.9%
His[H] 12 3.4%
Ile[I] 16 4.5%
Leu[L] 34 9.5%
Lys[K] 30 8.4%
Met[M] 5 1.4%
Phe[F] 19 5.3%
Pro[P] 20 5.6%
Ser[S] 29 8.1%
Thr[T] 14 3.9%
Trp[W] 3 0.8%
Tyr[Y] 9 2.5%
Val[V] 25 7.0%
Total Length 357

Instability index
Instability index (II) 38.69
This classifies the protein as stable

Atomic composition
Carbon 1787
Hydrogen 2782
Nitrogen 474
Oxygen 543
Sulfur 12
Total number of atoms 5598
Formula = C1787H2782N474O543S12

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 30285 M-1 cm-1
assuming NO Cys residues appear as half cystines 29910 M-1 cm-1
assuming all Cys residues are reduced 29910 M-1 cm-1
assuming all pairs of Cys residues form cystines 30285 M-1 cm-1

Aliphatic index
Aliphatic index 81.09

Coding Region Translation Calculations
Codon Bias 0.050
Codon Adaptation Index 0.142
Frequency of Optimal Codons 0.436
Hydropathicity of Protein -0.411
Aromaticity Score 0.087