COS8/YHL048W 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 4.2%
Arg[R] 15 3.9%
Asn[N] 19 5.0%
Asp[D] 16 4.2%
Cys[C] 6 1.6%
Gln[Q] 12 3.1%
Glu[E] 31 8.1%
Gly[G] 7 1.8%
His[H] 3 0.8%
Ile[I] 19 5.0%
Leu[L] 46 12.1%
Lys[K] 36 9.4%
Met[M] 11 2.9%
Phe[F] 37 9.7%
Pro[P] 15 3.9%
Ser[S] 27 7.1%
Thr[T] 13 3.4%
Trp[W] 15 3.9%
Tyr[Y] 15 3.9%
Val[V] 22 5.8%
Total Length 381

Instability index
Instability index (II) 40.49
This classifies the protein as unstable

Atomic composition
Carbon 2155
Hydrogen 3234
Nitrogen 514
Oxygen 562
Sulfur 17
Total number of atoms 6482
Formula = C2155H3234N514O562S17

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 105225 M-1 cm-1
assuming NO Cys residues appear as half cystines 104850 M-1 cm-1
assuming all Cys residues are reduced 104850 M-1 cm-1
assuming all pairs of Cys residues form cystines 105225 M-1 cm-1

Aliphatic index
Aliphatic index 87.48

Coding Region Translation Calculations
Codon Bias 0.018
Codon Adaptation Index 0.122
Frequency of Optimal Codons 0.423
Hydropathicity of Protein -0.157
Aromaticity Score 0.176