VAR1/Q0140 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] 3 0.8%
Arg[R] 5 1.3%
Asn[N] 127 31.9%
Asp[D] 10 2.5%
Cys[C] 1 0.3%
Gln[Q] 4 1.0%
Glu[E] 2 0.5%
Gly[G] 10 2.5%
His[H] 5 1.3%
Ile[I] 42 10.6%
Leu[L] 41 10.3%
Lys[K] 38 9.5%
Met[M] 33 8.3%
Phe[F] 5 1.3%
Pro[P] 7 1.8%
Ser[S] 16 4.0%
Thr[T] 13 3.3%
Trp[W] 3 0.8%
Tyr[Y] 28 7.0%
Val[V] 5 1.3%
Total Length 398

Instability index
Instability index (II) 41.73
This classifies the protein as unstable

Atomic composition
Carbon 2051
Hydrogen 3263
Nitrogen 595
Oxygen 611
Sulfur 34
Total number of atoms 6554
Formula = C2051H3263N595O611S34

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 58220 M-1 cm-1
assuming NO Cys residues appear as half cystines 58220 M-1 cm-1
assuming all Cys residues are reduced 58220 M-1 cm-1
assuming all pairs of Cys residues form cystines 58220 M-1 cm-1

Aliphatic index
Aliphatic index 85.73

Coding Region Translation Calculations
Codon Bias -0.634
Codon Adaptation Index 0.089
Frequency of Optimal Codons 0.221
Hydropathicity of Protein -0.786
Aromaticity Score 0.090