REG2/YBR050C 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] 18 5.3%
Arg[R] 20 5.9%
Asn[N] 32 9.5%
Asp[D] 27 8.0%
Cys[C] 7 2.1%
Gln[Q] 10 3.0%
Glu[E] 18 5.3%
Gly[G] 7 2.1%
His[H] 9 2.7%
Ile[I] 20 5.9%
Leu[L] 26 7.7%
Lys[K] 28 8.3%
Met[M] 6 1.8%
Phe[F] 14 4.1%
Pro[P] 14 4.1%
Ser[S] 35 10.4%
Thr[T] 19 5.6%
Trp[W] 4 1.2%
Tyr[Y] 8 2.4%
Val[V] 16 4.7%
Total Length 338

Instability index
Instability index (II) 46.25
This classifies the protein as unstable

Atomic composition
Carbon 1686
Hydrogen 2668
Nitrogen 490
Oxygen 533
Sulfur 13
Total number of atoms 5390
Formula = C1686H2668N490O533S13

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 34295 M-1 cm-1
assuming NO Cys residues appear as half cystines 33920 M-1 cm-1
assuming all Cys residues are reduced 33920 M-1 cm-1
assuming all pairs of Cys residues form cystines 34295 M-1 cm-1

Aliphatic index
Aliphatic index 72.13

Coding Region Translation Calculations
Codon Bias 0.029
Codon Adaptation Index 0.138
Frequency of Optimal Codons 0.433
Hydropathicity of Protein -0.759
Aromaticity Score 0.077