HEM1/YDR232W 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] 63 11.5%
Arg[R] 22 4.0%
Asn[N] 28 5.1%
Asp[D] 31 5.7%
Cys[C] 6 1.1%
Gln[Q] 18 3.3%
Glu[E] 25 4.6%
Gly[G] 40 7.3%
His[H] 22 4.0%
Ile[I] 32 5.8%
Leu[L] 49 8.9%
Lys[K] 33 6.0%
Met[M] 9 1.6%
Phe[F] 20 3.6%
Pro[P] 21 3.8%
Ser[S] 42 7.7%
Thr[T] 33 6.0%
Trp[W] 4 0.7%
Tyr[Y] 15 2.7%
Val[V] 35 6.4%
Total Length 548

Instability index
Instability index (II) 32.41
This classifies the protein as stable

Atomic composition
Carbon 2628
Hydrogen 4153
Nitrogen 741
Oxygen 797
Sulfur 15
Total number of atoms 8334
Formula = C2628H4153N741O797S15

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 44725 M-1 cm-1
assuming NO Cys residues appear as half cystines 44350 M-1 cm-1
assuming all Cys residues are reduced 44350 M-1 cm-1
assuming all pairs of Cys residues form cystines 44725 M-1 cm-1

Aliphatic index
Aliphatic index 87.66

Coding Region Translation Calculations
Codon Bias 0.262
Codon Adaptation Index 0.213
Frequency of Optimal Codons 0.553
Hydropathicity of Protein -0.193
Aromaticity Score 0.071