IMP4/YNL075W 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] 19 6.6%
Arg[R] 27 9.3%
Asn[N] 13 4.5%
Asp[D] 19 6.6%
Cys[C] 2 0.7%
Gln[Q] 17 5.9%
Glu[E] 21 7.2%
Gly[G] 13 4.5%
His[H] 9 3.1%
Ile[I] 15 5.2%
Leu[L] 29 10.0%
Lys[K] 18 6.2%
Met[M] 5 1.7%
Phe[F] 13 4.5%
Pro[P] 12 4.1%
Ser[S] 15 5.2%
Thr[T] 15 5.2%
Trp[W] 1 0.3%
Tyr[Y] 7 2.4%
Val[V] 20 6.9%
Total Length 290

Instability index
Instability index (II) 41.87
This classifies the protein as unstable

Atomic composition
Carbon 1476
Hydrogen 2368
Nitrogen 438
Oxygen 438
Sulfur 7
Total number of atoms 4727
Formula = C1476H2368N438O438S7

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 16055 M-1 cm-1
assuming NO Cys residues appear as half cystines 15930 M-1 cm-1
assuming all Cys residues are reduced 15930 M-1 cm-1
assuming all pairs of Cys residues form cystines 16055 M-1 cm-1

Aliphatic index
Aliphatic index 85.72

Coding Region Translation Calculations
Codon Bias 0.109
Codon Adaptation Index 0.163
Frequency of Optimal Codons 0.461
Hydropathicity of Protein -0.606
Aromaticity Score 0.072