PTC1/YDL006W 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] 19 6.8%
Arg[R] 16 5.7%
Asn[N] 15 5.3%
Asp[D] 26 9.3%
Cys[C] 5 1.8%
Gln[Q] 7 2.5%
Glu[E] 18 6.4%
Gly[G] 16 5.7%
His[H] 7 2.5%
Ile[I] 16 5.7%
Leu[L] 25 8.9%
Lys[K] 13 4.6%
Met[M] 7 2.5%
Phe[F] 11 3.9%
Pro[P] 5 1.8%
Ser[S] 19 6.8%
Thr[T] 19 6.8%
Trp[W] 4 1.4%
Tyr[Y] 7 2.5%
Val[V] 26 9.3%
Total Length 281

Instability index
Instability index (II) 41.93
This classifies the protein as unstable

Atomic composition
Carbon 1384
Hydrogen 2182
Nitrogen 382
Oxygen 437
Sulfur 12
Total number of atoms 4397
Formula = C1384H2182N382O437S12

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 32680 M-1 cm-1
assuming NO Cys residues appear as half cystines 32430 M-1 cm-1
assuming all Cys residues are reduced 32430 M-1 cm-1
assuming all pairs of Cys residues form cystines 32680 M-1 cm-1

Aliphatic index
Aliphatic index 90.50

Coding Region Translation Calculations
Codon Bias -0.043
Codon Adaptation Index 0.119
Frequency of Optimal Codons 0.385
Hydropathicity of Protein -0.230
Aromaticity Score 0.078