AI5_BETA/Q0075 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] 10 2.8%
Arg[R] 7 2.0%
Asn[N] 39 11.0%
Asp[D] 12 3.4%
Cys[C] 2 0.6%
Gln[Q] 10 2.8%
Glu[E] 18 5.1%
Gly[G] 14 4.0%
His[H] 5 1.4%
Ile[I] 26 7.3%
Leu[L] 48 13.6%
Lys[K] 41 11.6%
Met[M] 16 4.5%
Phe[F] 21 5.9%
Pro[P] 9 2.5%
Ser[S] 15 4.2%
Thr[T] 19 5.4%
Trp[W] 3 0.8%
Tyr[Y] 31 8.8%
Val[V] 8 2.3%
Total Length 354

Instability index
Instability index (II) 47.41
This classifies the protein as unstable

Atomic composition
Carbon 1957
Hydrogen 3014
Nitrogen 478
Oxygen 529
Sulfur 18
Total number of atoms 5996
Formula = C1957H3014N478O529S18

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 62815 M-1 cm-1
assuming NO Cys residues appear as half cystines 62690 M-1 cm-1
assuming all Cys residues are reduced 62690 M-1 cm-1
assuming all pairs of Cys residues form cystines 62815 M-1 cm-1

Aliphatic index
Aliphatic index 90.90

Coding Region Translation Calculations
Codon Bias -0.335
Codon Adaptation Index 0.139
Frequency of Optimal Codons 0.313
Hydropathicity of Protein -0.359
Aromaticity Score 0.155