STT4/YLR305C 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] 121 6.4%
Arg[R] 75 3.9%
Asn[N] 90 4.7%
Asp[D] 99 5.2%
Cys[C] 28 1.5%
Gln[Q] 66 3.5%
Glu[E] 104 5.5%
Gly[G] 80 4.2%
His[H] 44 2.3%
Ile[I] 147 7.7%
Leu[L] 227 11.9%
Lys[K] 127 6.7%
Met[M] 35 1.8%
Phe[F] 107 5.6%
Pro[P] 71 3.7%
Ser[S] 177 9.3%
Thr[T] 123 6.5%
Trp[W] 16 0.8%
Tyr[Y] 69 3.6%
Val[V] 94 4.9%
Total Length 1900

Instability index
Instability index (II) 37.11
This classifies the protein as stable

Atomic composition
Carbon 9716
Hydrogen 15272
Nitrogen 2512
Oxygen 2832
Sulfur 63
Total number of atoms 30395
Formula = C9716H15272N2512O2832S63

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 192560 M-1 cm-1
assuming NO Cys residues appear as half cystines 190810 M-1 cm-1
assuming all Cys residues are reduced 190810 M-1 cm-1
assuming all pairs of Cys residues form cystines 192560 M-1 cm-1

Aliphatic index
Aliphatic index 97.48

Coding Region Translation Calculations
Codon Bias 0.072
Codon Adaptation Index 0.144
Frequency of Optimal Codons 0.449
Hydropathicity of Protein -0.071
Aromaticity Score 0.101