EMP47/YFL048C 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] 21 4.7%
Arg[R] 15 3.4%
Asn[N] 27 6.1%
Asp[D] 33 7.4%
Cys[C] 2 0.4%
Gln[Q] 27 6.1%
Glu[E] 24 5.4%
Gly[G] 27 6.1%
His[H] 2 0.4%
Ile[I] 27 6.1%
Leu[L] 47 10.6%
Lys[K] 39 8.8%
Met[M] 12 2.7%
Phe[F] 19 4.3%
Pro[P] 16 3.6%
Ser[S] 30 6.7%
Thr[T] 29 6.5%
Trp[W] 6 1.3%
Tyr[Y] 14 3.1%
Val[V] 28 6.3%
Total Length 445

Instability index
Instability index (II) 25.22
This classifies the protein as stable

Atomic composition
Carbon 2247
Hydrogen 3567
Nitrogen 593
Oxygen 687
Sulfur 14
Total number of atoms 7108
Formula = C2247H3567N593O687S14

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 53985 M-1 cm-1
assuming NO Cys residues appear as half cystines 53860 M-1 cm-1
assuming all Cys residues are reduced 53860 M-1 cm-1
assuming all pairs of Cys residues form cystines 53985 M-1 cm-1

Aliphatic index
Aliphatic index 87.82

Coding Region Translation Calculations
Codon Bias 0.130
Codon Adaptation Index 0.177
Frequency of Optimal Codons 0.489
Hydropathicity of Protein -0.410
Aromaticity Score 0.088