TOM40/YMR203W 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 7.8%
Arg[R] 10 2.6%
Asn[N] 22 5.7%
Asp[D] 19 4.9%
Cys[C] 4 1.0%
Gln[Q] 28 7.2%
Glu[E] 16 4.1%
Gly[G] 30 7.8%
His[H] 4 1.0%
Ile[I] 16 4.1%
Leu[L] 42 10.9%
Lys[K] 19 4.9%
Met[M] 6 1.6%
Phe[F] 21 5.4%
Pro[P] 20 5.2%
Ser[S] 37 9.6%
Thr[T] 26 6.7%
Trp[W] 3 0.8%
Tyr[Y] 11 2.8%
Val[V] 23 5.9%
Total Length 387

Instability index
Instability index (II) 35.05
This classifies the protein as stable

Atomic composition
Carbon 1873
Hydrogen 2925
Nitrogen 497
Oxygen 582
Sulfur 10
Total number of atoms 5887
Formula = C1873H2925N497O582S10

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 33140 M-1 cm-1
assuming NO Cys residues appear as half cystines 32890 M-1 cm-1
assuming all Cys residues are reduced 32890 M-1 cm-1
assuming all pairs of Cys residues form cystines 33140 M-1 cm-1

Aliphatic index
Aliphatic index 83.44

Coding Region Translation Calculations
Codon Bias 0.343
Codon Adaptation Index 0.274
Frequency of Optimal Codons 0.601
Hydropathicity of Protein -0.196
Aromaticity Score 0.090