TFB3/YDR460W 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] 8 2.5%
Arg[R] 22 6.9%
Asn[N] 25 7.8%
Asp[D] 20 6.2%
Cys[C] 8 2.5%
Gln[Q] 8 2.5%
Glu[E] 40 12.5%
Gly[G] 10 3.1%
His[H] 4 1.2%
Ile[I] 19 5.9%
Leu[L] 26 8.1%
Lys[K] 34 10.6%
Met[M] 7 2.2%
Phe[F] 17 5.3%
Pro[P] 10 3.1%
Ser[S] 13 4.0%
Thr[T] 16 5.0%
Trp[W] 1 0.3%
Tyr[Y] 12 3.7%
Val[V] 21 6.5%
Total Length 321

Instability index
Instability index (II) 41.68
This classifies the protein as unstable

Atomic composition
Carbon 1683
Hydrogen 2671
Nitrogen 463
Oxygen 516
Sulfur 15
Total number of atoms 5348
Formula = C1683H2671N463O516S15

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 23880 M-1 cm-1
assuming NO Cys residues appear as half cystines 23380 M-1 cm-1
assuming all Cys residues are reduced 23380 M-1 cm-1
assuming all pairs of Cys residues form cystines 23880 M-1 cm-1

Aliphatic index
Aliphatic index 76.14

Coding Region Translation Calculations
Codon Bias 0.081
Codon Adaptation Index 0.141
Frequency of Optimal Codons 0.476
Hydropathicity of Protein -0.811
Aromaticity Score 0.093