SSP120/YLR250W 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] 10 4.3%
Arg[R] 9 3.8%
Asn[N] 10 4.3%
Asp[D] 20 8.5%
Cys[C] 0 0.0%
Gln[Q] 4 1.7%
Glu[E] 32 13.7%
Gly[G] 15 6.4%
His[H] 16 6.8%
Ile[I] 16 6.8%
Leu[L] 20 8.5%
Lys[K] 19 8.1%
Met[M] 5 2.1%
Phe[F] 13 5.6%
Pro[P] 6 2.6%
Ser[S] 9 3.8%
Thr[T] 9 3.8%
Trp[W] 3 1.3%
Tyr[Y] 5 2.1%
Val[V] 13 5.6%
Total Length 234

Instability index
Instability index (II) 36.57
This classifies the protein as stable

Atomic composition
Carbon 1218
Hydrogen 1861
Nitrogen 329
Oxygen 376
Sulfur 5
Total number of atoms 3789
Formula = C1218H1861N329O376S5

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 23950 M-1 cm-1

Aliphatic index
Aliphatic index 80.38

Coding Region Translation Calculations
Codon Bias 0.118
Codon Adaptation Index 0.195
Frequency of Optimal Codons 0.496
Hydropathicity of Protein -0.721
Aromaticity Score 0.090