ACH1/YBL015W 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] 40 7.6%
Arg[R] 26 4.9%
Asn[N] 30 5.7%
Asp[D] 34 6.5%
Cys[C] 4 0.8%
Gln[Q] 14 2.7%
Glu[E] 33 6.3%
Gly[G] 34 6.5%
His[H] 20 3.8%
Ile[I] 33 6.3%
Leu[L] 44 8.4%
Lys[K] 34 6.5%
Met[M] 13 2.5%
Phe[F] 22 4.2%
Pro[P] 34 6.5%
Ser[S] 28 5.3%
Thr[T] 27 5.1%
Trp[W] 5 1.0%
Tyr[Y] 13 2.5%
Val[V] 38 7.2%
Total Length 526

Instability index
Instability index (II) 34.13
This classifies the protein as stable

Atomic composition
Carbon 2620
Hydrogen 4115
Nitrogen 727
Oxygen 773
Sulfur 17
Total number of atoms 8252
Formula = C2620H4115N727O773S17

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 47120 M-1 cm-1
assuming NO Cys residues appear as half cystines 46870 M-1 cm-1
assuming all Cys residues are reduced 46870 M-1 cm-1
assuming all pairs of Cys residues form cystines 47120 M-1 cm-1

Aliphatic index
Aliphatic index 85.65

Coding Region Translation Calculations
Codon Bias 0.311
Codon Adaptation Index 0.217
Frequency of Optimal Codons 0.589
Hydropathicity of Protein -0.360
Aromaticity Score 0.076