CTK1/YKL139W 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] 14 2.7%
Arg[R] 28 5.3%
Asn[N] 57 10.8%
Asp[D] 23 4.4%
Cys[C] 6 1.1%
Gln[Q] 24 4.5%
Glu[E] 28 5.3%
Gly[G] 29 5.5%
His[H] 11 2.1%
Ile[I] 26 4.9%
Leu[L] 46 8.7%
Lys[K] 46 8.7%
Met[M] 12 2.3%
Phe[F] 17 3.2%
Pro[P] 25 4.7%
Ser[S] 51 9.7%
Thr[T] 32 6.1%
Trp[W] 4 0.8%
Tyr[Y] 26 4.9%
Val[V] 23 4.4%
Total Length 528

Instability index
Instability index (II) 43.08
This classifies the protein as unstable

Atomic composition
Carbon 2652
Hydrogen 4187
Nitrogen 765
Oxygen 821
Sulfur 18
Total number of atoms 8443
Formula = C2652H4187N765O821S18

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 61115 M-1 cm-1
assuming NO Cys residues appear as half cystines 60740 M-1 cm-1
assuming all Cys residues are reduced 60740 M-1 cm-1
assuming all pairs of Cys residues form cystines 61115 M-1 cm-1

Aliphatic index
Aliphatic index 68.47

Coding Region Translation Calculations
Codon Bias -0.004
Codon Adaptation Index 0.120
Frequency of Optimal Codons 0.408
Hydropathicity of Protein -0.863
Aromaticity Score 0.089