SPT6/YGR116W 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] 77 5.3%
Arg[R] 74 5.1%
Asn[N] 99 6.8%
Asp[D] 123 8.5%
Cys[C] 7 0.5%
Gln[Q] 59 4.1%
Glu[E] 154 10.6%
Gly[G] 56 3.9%
His[H] 33 2.3%
Ile[I] 103 7.1%
Leu[L] 123 8.5%
Lys[K] 116 8.0%
Met[M] 20 1.4%
Phe[F] 58 4.0%
Pro[P] 45 3.1%
Ser[S] 99 6.8%
Thr[T] 63 4.3%
Trp[W] 11 0.8%
Tyr[Y] 61 4.2%
Val[V] 70 4.8%
Total Length 1451

Instability index
Instability index (II) 47.34
This classifies the protein as unstable

Atomic composition
Carbon 7427
Hydrogen 11588
Nitrogen 2024
Oxygen 2387
Sulfur 27
Total number of atoms 23453
Formula = C7427H11588N2024O2387S27

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 151765 M-1 cm-1
assuming NO Cys residues appear as half cystines 151390 M-1 cm-1
assuming all Cys residues are reduced 151390 M-1 cm-1
assuming all pairs of Cys residues form cystines 151765 M-1 cm-1

Aliphatic index
Aliphatic index 80.04

Coding Region Translation Calculations
Codon Bias 0.179
Codon Adaptation Index 0.218
Frequency of Optimal Codons 0.526
Hydropathicity of Protein -0.785
Aromaticity Score 0.090