RIB5/YBR256C 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] 6 2.5%
Arg[R] 7 2.9%
Asn[N] 17 7.1%
Asp[D] 14 5.9%
Cys[C] 4 1.7%
Gln[Q] 11 4.6%
Glu[E] 15 6.3%
Gly[G] 22 9.2%
His[H] 4 1.7%
Ile[I] 28 11.8%
Leu[L] 14 5.9%
Lys[K] 14 5.9%
Met[M] 5 2.1%
Phe[F] 9 3.8%
Pro[P] 5 2.1%
Ser[S] 18 7.6%
Thr[T] 16 6.7%
Trp[W] 1 0.4%
Tyr[Y] 6 2.5%
Val[V] 22 9.2%
Total Length 238

Instability index
Instability index (II) 44.49
This classifies the protein as unstable

Atomic composition
Carbon 1154
Hydrogen 1850
Nitrogen 310
Oxygen 365
Sulfur 9
Total number of atoms 3688
Formula = C1154H1850N310O365S9

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 14690 M-1 cm-1
assuming NO Cys residues appear as half cystines 14440 M-1 cm-1
assuming all Cys residues are reduced 14440 M-1 cm-1
assuming all pairs of Cys residues form cystines 14690 M-1 cm-1

Aliphatic index
Aliphatic index 98.15

Coding Region Translation Calculations
Codon Bias 0.182
Codon Adaptation Index 0.161
Frequency of Optimal Codons 0.543
Hydropathicity of Protein -0.094
Aromaticity Score 0.067