HCH1/YNL281W 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] 2 1.3%
Arg[R] 2 1.3%
Asn[N] 9 5.9%
Asp[D] 19 12.4%
Cys[C] 1 0.7%
Gln[Q] 6 3.9%
Glu[E] 8 5.2%
Gly[G] 8 5.2%
His[H] 3 2.0%
Ile[I] 9 5.9%
Leu[L] 16 10.5%
Lys[K] 14 9.2%
Met[M] 3 2.0%
Phe[F] 5 3.3%
Pro[P] 6 3.9%
Ser[S] 15 9.8%
Thr[T] 8 5.2%
Trp[W] 3 2.0%
Tyr[Y] 3 2.0%
Val[V] 13 8.5%
Total Length 153

Instability index
Instability index (II) 26.10
This classifies the protein as stable

Atomic composition
Carbon 763
Hydrogen 1201
Nitrogen 197
Oxygen 249
Sulfur 4
Total number of atoms 2414
Formula = C763H1201N197O249S4

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 20970 M-1 cm-1
assuming NO Cys residues appear as half cystines 20970 M-1 cm-1
assuming all Cys residues are reduced 20970 M-1 cm-1
assuming all pairs of Cys residues form cystines 20970 M-1 cm-1

Aliphatic index
Aliphatic index 89.67

Coding Region Translation Calculations
Codon Bias 0.112
Codon Adaptation Index 0.178
Frequency of Optimal Codons 0.490
Hydropathicity of Protein -0.493
Aromaticity Score 0.072