SRB2/YHR041C 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] 19 9.0%
Arg[R] 9 4.3%
Asn[N] 7 3.3%
Asp[D] 13 6.2%
Cys[C] 2 1.0%
Gln[Q] 5 2.4%
Glu[E] 13 6.2%
Gly[G] 13 6.2%
His[H] 4 1.9%
Ile[I] 17 8.1%
Leu[L] 24 11.4%
Lys[K] 11 5.2%
Met[M] 4 1.9%
Phe[F] 7 3.3%
Pro[P] 7 3.3%
Ser[S] 21 10.0%
Thr[T] 16 7.6%
Trp[W] 2 1.0%
Tyr[Y] 5 2.4%
Val[V] 11 5.2%
Total Length 210

Instability index
Instability index (II) 27.25
This classifies the protein as stable

Atomic composition
Carbon 1016
Hydrogen 1632
Nitrogen 270
Oxygen 317
Sulfur 6
Total number of atoms 3241
Formula = C1016H1632N270O317S6

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 18575 M-1 cm-1
assuming NO Cys residues appear as half cystines 18450 M-1 cm-1
assuming all Cys residues are reduced 18450 M-1 cm-1
assuming all pairs of Cys residues form cystines 18575 M-1 cm-1

Aliphatic index
Aliphatic index 100.38

Coding Region Translation Calculations
Codon Bias 0.076
Codon Adaptation Index 0.081
Frequency of Optimal Codons 0.441
Hydropathicity of Protein -0.008
Aromaticity Score 0.067