CHK1/YBR274W 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] 22 4.2%
Arg[R] 20 3.8%
Asn[N] 34 6.5%
Asp[D] 36 6.8%
Cys[C] 10 1.9%
Gln[Q] 22 4.2%
Glu[E] 30 5.7%
Gly[G] 28 5.3%
His[H] 13 2.5%
Ile[I] 36 6.8%
Leu[L] 64 12.1%
Lys[K] 37 7.0%
Met[M] 10 1.9%
Phe[F] 26 4.9%
Pro[P] 25 4.7%
Ser[S] 37 7.0%
Thr[T] 24 4.6%
Trp[W] 8 1.5%
Tyr[Y] 15 2.8%
Val[V] 30 5.7%
Total Length 527

Instability index
Instability index (II) 38.25
This classifies the protein as stable

Atomic composition
Carbon 2701
Hydrogen 4228
Nitrogen 714
Oxygen 792
Sulfur 20
Total number of atoms 8455
Formula = C2701H4228N714O792S20

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 66975 M-1 cm-1
assuming NO Cys residues appear as half cystines 66350 M-1 cm-1
assuming all Cys residues are reduced 66350 M-1 cm-1
assuming all pairs of Cys residues form cystines 66975 M-1 cm-1

Aliphatic index
Aliphatic index 94.69

Coding Region Translation Calculations
Codon Bias 0.064
Codon Adaptation Index 0.152
Frequency of Optimal Codons 0.446
Hydropathicity of Protein -0.265
Aromaticity Score 0.093