AAH1/YNL141W 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] 18 5.2%
Arg[R] 12 3.5%
Asn[N] 9 2.6%
Asp[D] 28 8.1%
Cys[C] 7 2.0%
Gln[Q] 14 4.0%
Glu[E] 27 7.8%
Gly[G] 18 5.2%
His[H] 13 3.7%
Ile[I] 18 5.2%
Leu[L] 41 11.8%
Lys[K] 26 7.5%
Met[M] 3 0.9%
Phe[F] 20 5.8%
Pro[P] 17 4.9%
Ser[S] 23 6.6%
Thr[T] 16 4.6%
Trp[W] 4 1.2%
Tyr[Y] 12 3.5%
Val[V] 21 6.1%
Total Length 347

Instability index
Instability index (II) 47.20
This classifies the protein as unstable

Atomic composition
Carbon 1794
Hydrogen 2762
Nitrogen 462
Oxygen 532
Sulfur 10
Total number of atoms 5560
Formula = C1794H2762N462O532S10

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 40255 M-1 cm-1
assuming NO Cys residues appear as half cystines 39880 M-1 cm-1
assuming all Cys residues are reduced 39880 M-1 cm-1
assuming all pairs of Cys residues form cystines 40255 M-1 cm-1

Aliphatic index
Aliphatic index 89.05

Coding Region Translation Calculations
Codon Bias 0.212
Codon Adaptation Index 0.248
Frequency of Optimal Codons 0.532
Hydropathicity of Protein -0.336
Aromaticity Score 0.104