BI2/Q0110 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] 13 3.1%
Arg[R] 10 2.4%
Asn[N] 38 9.0%
Asp[D] 10 2.4%
Cys[C] 7 1.7%
Gln[Q] 9 2.1%
Glu[E] 8 1.9%
Gly[G] 28 6.6%
His[H] 9 2.1%
Ile[I] 42 9.9%
Leu[L] 42 9.9%
Lys[K] 34 8.0%
Met[M] 34 8.0%
Phe[F] 17 4.0%
Pro[P] 10 2.4%
Ser[S] 29 6.9%
Thr[T] 22 5.2%
Trp[W] 8 1.9%
Tyr[Y] 36 8.5%
Val[V] 17 4.0%
Total Length 423

Instability index
Instability index (II) 34.96
This classifies the protein as stable

Atomic composition
Carbon 2260
Hydrogen 3492
Nitrogen 560
Oxygen 594
Sulfur 41
Total number of atoms 6947
Formula = C2260H3492N560O594S41

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 98015 M-1 cm-1
assuming NO Cys residues appear as half cystines 97640 M-1 cm-1
assuming all Cys residues are reduced 97640 M-1 cm-1
assuming all pairs of Cys residues form cystines 98015 M-1 cm-1

Aliphatic index
Aliphatic index 92.17

Coding Region Translation Calculations
Codon Bias -0.230
Codon Adaptation Index 0.136
Frequency of Optimal Codons 0.367
Hydropathicity of Protein 0.046
Aromaticity Score 0.144