ECM31/YBR176W 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] 16 5.1%
Arg[R] 7 2.2%
Asn[N] 12 3.8%
Asp[D] 15 4.8%
Cys[C] 7 2.2%
Gln[Q] 13 4.2%
Glu[E] 15 4.8%
Gly[G] 23 7.4%
His[H] 5 1.6%
Ile[I] 21 6.7%
Leu[L] 26 8.3%
Lys[K] 26 8.3%
Met[M] 14 4.5%
Phe[F] 13 4.2%
Pro[P] 8 2.6%
Ser[S] 29 9.3%
Thr[T] 24 7.7%
Trp[W] 3 1.0%
Tyr[Y] 10 3.2%
Val[V] 25 8.0%
Total Length 312

Instability index
Instability index (II) 37.41
This classifies the protein as stable

Atomic composition
Carbon 1531
Hydrogen 2447
Nitrogen 397
Oxygen 461
Sulfur 21
Total number of atoms 4857
Formula = C1531H2447N397O461S21

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 31775 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 31775 M-1 cm-1

Aliphatic index
Aliphatic index 87.12

Coding Region Translation Calculations
Codon Bias 0.079
Codon Adaptation Index 0.144
Frequency of Optimal Codons 0.464
Hydropathicity of Protein -0.037
Aromaticity Score 0.083