STN1/YDR082W 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 2.0%
Arg[R] 18 3.6%
Asn[N] 23 4.7%
Asp[D] 30 6.1%
Cys[C] 8 1.6%
Gln[Q] 29 5.9%
Glu[E] 36 7.3%
Gly[G] 24 4.9%
His[H] 11 2.2%
Ile[I] 31 6.3%
Leu[L] 62 12.6%
Lys[K] 35 7.1%
Met[M] 12 2.4%
Phe[F] 22 4.5%
Pro[P] 14 2.8%
Ser[S] 41 8.3%
Thr[T] 27 5.5%
Trp[W] 8 1.6%
Tyr[Y] 25 5.1%
Val[V] 28 5.7%
Total Length 494

Instability index
Instability index (II) 34.73
This classifies the protein as stable

Atomic composition
Carbon 2593
Hydrogen 4027
Nitrogen 665
Oxygen 772
Sulfur 20
Total number of atoms 8077
Formula = C2593H4027N665O772S20

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 81750 M-1 cm-1
assuming NO Cys residues appear as half cystines 81250 M-1 cm-1
assuming all Cys residues are reduced 81250 M-1 cm-1
assuming all pairs of Cys residues form cystines 81750 M-1 cm-1

Aliphatic index
Aliphatic index 91.88

Coding Region Translation Calculations
Codon Bias -0.010
Codon Adaptation Index 0.121
Frequency of Optimal Codons 0.409
Hydropathicity of Protein -0.352
Aromaticity Score 0.111