HDA2/YDR295C 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] 32 4.7%
Arg[R] 27 4.0%
Asn[N] 55 8.2%
Asp[D] 39 5.8%
Cys[C] 6 0.9%
Gln[Q] 33 4.9%
Glu[E] 47 7.0%
Gly[G] 19 2.8%
His[H] 16 2.4%
Ile[I] 40 5.9%
Leu[L] 83 12.3%
Lys[K] 68 10.1%
Met[M] 9 1.3%
Phe[F] 18 2.7%
Pro[P] 27 4.0%
Ser[S] 66 9.8%
Thr[T] 37 5.5%
Trp[W] 3 0.4%
Tyr[Y] 25 3.7%
Val[V] 24 3.6%
Total Length 674

Instability index
Instability index (II) 46.66
This classifies the protein as unstable

Atomic composition
Carbon 3398
Hydrogen 5464
Nitrogen 946
Oxygen 1063
Sulfur 15
Total number of atoms 10886
Formula = C3398H5464N946O1063S15

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 54125 M-1 cm-1
assuming NO Cys residues appear as half cystines 53750 M-1 cm-1
assuming all Cys residues are reduced 53750 M-1 cm-1
assuming all pairs of Cys residues form cystines 54125 M-1 cm-1

Aliphatic index
Aliphatic index 86.25

Coding Region Translation Calculations
Codon Bias 0.001
Codon Adaptation Index 0.128
Frequency of Optimal Codons 0.409
Hydropathicity of Protein -0.705
Aromaticity Score 0.068