KTR4/YBR199W 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] 19 4.1%
Arg[R] 17 3.7%
Asn[N] 31 6.7%
Asp[D] 36 7.8%
Cys[C] 8 1.7%
Gln[Q] 15 3.2%
Glu[E] 41 8.8%
Gly[G] 17 3.7%
His[H] 11 2.4%
Ile[I] 24 5.2%
Leu[L] 40 8.6%
Lys[K] 29 6.2%
Met[M] 11 2.4%
Phe[F] 24 5.2%
Pro[P] 22 4.7%
Ser[S] 34 7.3%
Thr[T] 21 4.5%
Trp[W] 9 1.9%
Tyr[Y] 32 6.9%
Val[V] 23 5.0%
Total Length 464

Instability index
Instability index (II) 44.56
This classifies the protein as unstable

Atomic composition
Carbon 2458
Hydrogen 3665
Nitrogen 621
Oxygen 752
Sulfur 19
Total number of atoms 7515
Formula = C2458H3665N621O752S19

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 97680 M-1 cm-1
assuming NO Cys residues appear as half cystines 97180 M-1 cm-1
assuming all Cys residues are reduced 97180 M-1 cm-1
assuming all pairs of Cys residues form cystines 97680 M-1 cm-1

Aliphatic index
Aliphatic index 72.26

Coding Region Translation Calculations
Codon Bias -0.015
Codon Adaptation Index 0.133
Frequency of Optimal Codons 0.412
Hydropathicity of Protein -0.625
Aromaticity Score 0.140