SSN3/YPL042C 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] 45 8.1%
Arg[R] 34 6.1%
Asn[N] 33 5.9%
Asp[D] 26 4.7%
Cys[C] 5 0.9%
Gln[Q] 28 5.0%
Glu[E] 25 4.5%
Gly[G] 36 6.5%
His[H] 19 3.4%
Ile[I] 32 5.8%
Leu[L] 48 8.6%
Lys[K] 41 7.4%
Met[M] 16 2.9%
Phe[F] 15 2.7%
Pro[P] 25 4.5%
Ser[S] 31 5.6%
Thr[T] 31 5.6%
Trp[W] 6 1.1%
Tyr[Y] 27 4.9%
Val[V] 32 5.8%
Total Length 555

Instability index
Instability index (II) 34.38
This classifies the protein as stable

Atomic composition
Carbon 2793
Hydrogen 4417
Nitrogen 803
Oxygen 808
Sulfur 21
Total number of atoms 8842
Formula = C2793H4417N803O808S21

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 73480 M-1 cm-1
assuming NO Cys residues appear as half cystines 73230 M-1 cm-1
assuming all Cys residues are reduced 73230 M-1 cm-1
assuming all pairs of Cys residues form cystines 73480 M-1 cm-1

Aliphatic index
Aliphatic index 81.05

Coding Region Translation Calculations
Codon Bias 0.044
Codon Adaptation Index 0.119
Frequency of Optimal Codons 0.426
Hydropathicity of Protein -0.505
Aromaticity Score 0.086