SRB6/YBR253W 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] 7 5.8%
Arg[R] 4 3.3%
Asn[N] 9 7.4%
Asp[D] 7 5.8%
Cys[C] 1 0.8%
Gln[Q] 8 6.6%
Glu[E] 13 10.7%
Gly[G] 1 0.8%
His[H] 1 0.8%
Ile[I] 9 7.4%
Leu[L] 14 11.6%
Lys[K] 8 6.6%
Met[M] 5 4.1%
Phe[F] 3 2.5%
Pro[P] 1 0.8%
Ser[S] 7 5.8%
Thr[T] 13 10.7%
Trp[W] 1 0.8%
Tyr[Y] 1 0.8%
Val[V] 8 6.6%
Total Length 121

Instability index
Instability index (II) 34.74
This classifies the protein as stable

Atomic composition
Carbon 601
Hydrogen 989
Nitrogen 161
Oxygen 200
Sulfur 6
Total number of atoms 1957
Formula = C601H989N161O200S6

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 6990 M-1 cm-1
assuming NO Cys residues appear as half cystines 6990 M-1 cm-1
assuming all Cys residues are reduced 6990 M-1 cm-1
assuming all pairs of Cys residues form cystines 6990 M-1 cm-1

Aliphatic index
Aliphatic index 99.09

Coding Region Translation Calculations
Codon Bias -0.039
Codon Adaptation Index 0.097
Frequency of Optimal Codons 0.409
Hydropathicity of Protein -0.335
Aromaticity Score 0.041