KEX2/YNL238W 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] 50 6.1%
Arg[R] 32 3.9%
Asn[N] 45 5.5%
Asp[D] 66 8.1%
Cys[C] 8 1.0%
Gln[Q] 16 2.0%
Glu[E] 53 6.5%
Gly[G] 57 7.0%
His[H] 22 2.7%
Ile[I] 48 5.9%
Leu[L] 62 7.6%
Lys[K] 41 5.0%
Met[M] 10 1.2%
Phe[F] 32 3.9%
Pro[P] 36 4.4%
Ser[S] 92 11.3%
Thr[T] 55 6.8%
Trp[W] 15 1.8%
Tyr[Y] 28 3.4%
Val[V] 46 5.7%
Total Length 814

Instability index
Instability index (II) 38.07
This classifies the protein as stable

Atomic composition
Carbon 3968
Hydrogen 6093
Nitrogen 1071
Oxygen 1289
Sulfur 18
Total number of atoms 12439
Formula = C3968H6093N1071O1289S18

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 124720 M-1 cm-1
assuming NO Cys residues appear as half cystines 124220 M-1 cm-1
assuming all Cys residues are reduced 124220 M-1 cm-1
assuming all pairs of Cys residues form cystines 124720 M-1 cm-1

Aliphatic index
Aliphatic index 75.23

Coding Region Translation Calculations
Codon Bias 0.074
Codon Adaptation Index 0.150
Frequency of Optimal Codons 0.450
Hydropathicity of Protein -0.471
Aromaticity Score 0.092