SIS2/YKR072C 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] 28 5.0%
Arg[R] 18 3.2%
Asn[N] 35 6.2%
Asp[D] 64 11.4%
Cys[C] 3 0.5%
Gln[Q] 28 5.0%
Glu[E] 39 6.9%
Gly[G] 23 4.1%
His[H] 8 1.4%
Ile[I] 37 6.6%
Leu[L] 35 6.2%
Lys[K] 45 8.0%
Met[M] 16 2.8%
Phe[F] 8 1.4%
Pro[P] 37 6.6%
Ser[S] 49 8.7%
Thr[T] 45 8.0%
Trp[W] 7 1.2%
Tyr[Y] 6 1.1%
Val[V] 31 5.5%
Total Length 562

Instability index
Instability index (II) 48.80
This classifies the protein as unstable

Atomic composition
Carbon 2678
Hydrogen 4295
Nitrogen 747
Oxygen 932
Sulfur 19
Total number of atoms 8671
Formula = C2678H4295N747O932S19

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 47565 M-1 cm-1
assuming NO Cys residues appear as half cystines 47440 M-1 cm-1
assuming all Cys residues are reduced 47440 M-1 cm-1
assuming all pairs of Cys residues form cystines 47565 M-1 cm-1

Aliphatic index
Aliphatic index 70.94

Coding Region Translation Calculations
Codon Bias 0.100
Codon Adaptation Index 0.155
Frequency of Optimal Codons 0.481
Hydropathicity of Protein -0.847
Aromaticity Score 0.037