HDA1/YNL021W 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 4.5%
Arg[R] 32 4.5%
Asn[N] 38 5.4%
Asp[D] 49 6.9%
Cys[C] 14 2.0%
Gln[Q] 19 2.7%
Glu[E] 53 7.5%
Gly[G] 44 6.2%
His[H] 20 2.8%
Ile[I] 55 7.8%
Leu[L] 58 8.2%
Lys[K] 44 6.2%
Met[M] 16 2.3%
Phe[F] 28 4.0%
Pro[P] 36 5.1%
Ser[S] 52 7.4%
Thr[T] 30 4.2%
Trp[W] 10 1.4%
Tyr[Y] 27 3.8%
Val[V] 49 6.9%
Total Length 706

Instability index
Instability index (II) 41.78
This classifies the protein as unstable

Atomic composition
Carbon 3574
Hydrogen 5557
Nitrogen 953
Oxygen 1077
Sulfur 30
Total number of atoms 11191
Formula = C3574H5557N953O1077S30

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 96105 M-1 cm-1
assuming NO Cys residues appear as half cystines 95230 M-1 cm-1
assuming all Cys residues are reduced 95230 M-1 cm-1
assuming all pairs of Cys residues form cystines 96105 M-1 cm-1

Aliphatic index
Aliphatic index 87.08

Coding Region Translation Calculations
Codon Bias 0.079
Codon Adaptation Index 0.151
Frequency of Optimal Codons 0.462
Hydropathicity of Protein -0.344
Aromaticity Score 0.092