SCS2/YER120W 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] 21 8.6%
Arg[R] 3 1.2%
Asn[N] 12 4.9%
Asp[D] 9 3.7%
Cys[C] 2 0.8%
Gln[Q] 16 6.6%
Glu[E] 24 9.8%
Gly[G] 5 2.0%
His[H] 2 0.8%
Ile[I] 14 5.7%
Leu[L] 14 5.7%
Lys[K] 20 8.2%
Met[M] 2 0.8%
Phe[F] 8 3.3%
Pro[P] 23 9.4%
Ser[S] 17 7.0%
Thr[T] 14 5.7%
Trp[W] 2 0.8%
Tyr[Y] 6 2.5%
Val[V] 30 12.3%
Total Length 244

Instability index
Instability index (II) 57.10
This classifies the protein as unstable

Atomic composition
Carbon 1211
Hydrogen 1921
Nitrogen 307
Oxygen 376
Sulfur 4
Total number of atoms 3819
Formula = C1211H1921N307O376S4

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 20065 M-1 cm-1
assuming NO Cys residues appear as half cystines 19940 M-1 cm-1
assuming all Cys residues are reduced 19940 M-1 cm-1
assuming all pairs of Cys residues form cystines 20065 M-1 cm-1

Aliphatic index
Aliphatic index 89.02

Coding Region Translation Calculations
Codon Bias 0.270
Codon Adaptation Index 0.194
Frequency of Optimal Codons 0.579
Hydropathicity of Protein -0.295
Aromaticity Score 0.066