VBA3/YCL069W 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] 30 6.6%
Arg[R] 12 2.6%
Asn[N] 20 4.4%
Asp[D] 15 3.3%
Cys[C] 7 1.5%
Gln[Q] 13 2.8%
Glu[E] 10 2.2%
Gly[G] 42 9.2%
His[H] 6 1.3%
Ile[I] 43 9.4%
Leu[L] 58 12.7%
Lys[K] 24 5.2%
Met[M] 14 3.1%
Phe[F] 39 8.5%
Pro[P] 14 3.1%
Ser[S] 34 7.4%
Thr[T] 28 6.1%
Trp[W] 5 1.1%
Tyr[Y] 12 2.6%
Val[V] 32 7.0%
Total Length 458

Instability index
Instability index (II) 31.77
This classifies the protein as stable

Atomic composition
Carbon 2336
Hydrogen 3654
Nitrogen 568
Oxygen 616
Sulfur 21
Total number of atoms 7195
Formula = C2336H3654N568O616S21

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 45755 M-1 cm-1
assuming NO Cys residues appear as half cystines 45380 M-1 cm-1
assuming all Cys residues are reduced 45380 M-1 cm-1
assuming all pairs of Cys residues form cystines 45755 M-1 cm-1

Aliphatic index
Aliphatic index 112.82

Coding Region Translation Calculations
Codon Bias 0.075
Codon Adaptation Index 0.123
Frequency of Optimal Codons 0.446
Hydropathicity of Protein 0.611
Aromaticity Score 0.122