SPT4/YGR063C 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] 6 5.9%
Arg[R] 4 3.9%
Asn[N] 3 2.9%
Asp[D] 4 3.9%
Cys[C] 6 5.9%
Gln[Q] 3 2.9%
Glu[E] 9 8.8%
Gly[G] 9 8.8%
His[H] 2 2.0%
Ile[I] 4 3.9%
Leu[L] 6 5.9%
Lys[K] 5 4.9%
Met[M] 5 4.9%
Phe[F] 3 2.9%
Pro[P] 6 5.9%
Ser[S] 9 8.8%
Thr[T] 5 4.9%
Trp[W] 2 2.0%
Tyr[Y] 2 2.0%
Val[V] 9 8.8%
Total Length 102

Instability index
Instability index (II) 47.76
This classifies the protein as unstable

Atomic composition
Carbon 482
Hydrogen 759
Nitrogen 131
Oxygen 151
Sulfur 11
Total number of atoms 1534
Formula = C482H759N131O151S11

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 14355 M-1 cm-1
assuming NO Cys residues appear as half cystines 13980 M-1 cm-1
assuming all Cys residues are reduced 13980 M-1 cm-1
assuming all pairs of Cys residues form cystines 14355 M-1 cm-1

Aliphatic index
Aliphatic index 69.71

Coding Region Translation Calculations
Codon Bias 0.069
Codon Adaptation Index 0.109
Frequency of Optimal Codons 0.442
Hydropathicity of Protein -0.161
Aromaticity Score 0.069