PET18/YCR020C 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] 15 7.0%
Arg[R] 8 3.7%
Asn[N] 6 2.8%
Asp[D] 15 7.0%
Cys[C] 6 2.8%
Gln[Q] 6 2.8%
Glu[E] 19 8.8%
Gly[G] 5 2.3%
His[H] 6 2.8%
Ile[I] 10 4.7%
Leu[L] 24 11.2%
Lys[K] 17 7.9%
Met[M] 1 0.5%
Phe[F] 16 7.4%
Pro[P] 7 3.3%
Ser[S] 14 6.5%
Thr[T] 16 7.4%
Trp[W] 7 3.3%
Tyr[Y] 8 3.7%
Val[V] 9 4.2%
Total Length 215

Instability index
Instability index (II) 33.27
This classifies the protein as stable

Atomic composition
Carbon 1156
Hydrogen 1737
Nitrogen 287
Oxygen 334
Sulfur 7
Total number of atoms 3521
Formula = C1156H1737N287O334S7

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 50795 M-1 cm-1
assuming NO Cys residues appear as half cystines 50420 M-1 cm-1
assuming all Cys residues are reduced 50420 M-1 cm-1
assuming all pairs of Cys residues form cystines 50795 M-1 cm-1

Aliphatic index
Aliphatic index 80.79

Coding Region Translation Calculations
Codon Bias 0.128
Codon Adaptation Index 0.207
Frequency of Optimal Codons 0.488
Hydropathicity of Protein -0.335
Aromaticity Score 0.144