MET8/YBR213W 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] 11 4.0%
Arg[R] 19 6.9%
Asn[N] 11 4.0%
Asp[D] 26 9.5%
Cys[C] 8 2.9%
Gln[Q] 12 4.4%
Glu[E] 17 6.2%
Gly[G] 15 5.5%
His[H] 6 2.2%
Ile[I] 20 7.3%
Leu[L] 35 12.8%
Lys[K] 20 7.3%
Met[M] 5 1.8%
Phe[F] 13 4.7%
Pro[P] 13 4.7%
Ser[S] 11 4.0%
Thr[T] 8 2.9%
Trp[W] 3 1.1%
Tyr[Y] 10 3.6%
Val[V] 11 4.0%
Total Length 274

Instability index
Instability index (II) 33.76
This classifies the protein as stable

Atomic composition
Carbon 1430
Hydrogen 2251
Nitrogen 389
Oxygen 413
Sulfur 13
Total number of atoms 4496
Formula = C1430H2251N389O413S13

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 31900 M-1 cm-1
assuming NO Cys residues appear as half cystines 31400 M-1 cm-1
assuming all Cys residues are reduced 31400 M-1 cm-1
assuming all pairs of Cys residues form cystines 31900 M-1 cm-1

Aliphatic index
Aliphatic index 93.94

Coding Region Translation Calculations
Codon Bias 0.083
Codon Adaptation Index 0.106
Frequency of Optimal Codons 0.451
Hydropathicity of Protein -0.422
Aromaticity Score 0.095