ARK1/YNL020C 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] 31 4.9%
Arg[R] 23 3.6%
Asn[N] 46 7.2%
Asp[D] 34 5.3%
Cys[C] 6 0.9%
Gln[Q] 35 5.5%
Glu[E] 30 4.7%
Gly[G] 25 3.9%
His[H] 16 2.5%
Ile[I] 40 6.3%
Leu[L] 62 9.7%
Lys[K] 49 7.7%
Met[M] 17 2.7%
Phe[F] 19 3.0%
Pro[P] 46 7.2%
Ser[S] 70 11.0%
Thr[T] 35 5.5%
Trp[W] 1 0.2%
Tyr[Y] 22 3.4%
Val[V] 31 4.9%
Total Length 638

Instability index
Instability index (II) 39.85
This classifies the protein as stable

Atomic composition
Carbon 3146
Hydrogen 5024
Nitrogen 870
Oxygen 975
Sulfur 23
Total number of atoms 10038
Formula = C3146H5024N870O975S23

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 38655 M-1 cm-1
assuming NO Cys residues appear as half cystines 38280 M-1 cm-1
assuming all Cys residues are reduced 38280 M-1 cm-1
assuming all pairs of Cys residues form cystines 38655 M-1 cm-1

Aliphatic index
Aliphatic index 81.30

Coding Region Translation Calculations
Codon Bias 0.038
Codon Adaptation Index 0.120
Frequency of Optimal Codons 0.427
Hydropathicity of Protein -0.540
Aromaticity Score 0.066