HSP78/YDR258C 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] 59 7.3%
Arg[R] 60 7.4%
Asn[N] 30 3.7%
Asp[D] 62 7.6%
Cys[C] 7 0.9%
Gln[Q] 27 3.3%
Glu[E] 66 8.1%
Gly[G] 42 5.2%
His[H] 11 1.4%
Ile[I] 60 7.4%
Leu[L] 92 11.3%
Lys[K] 71 8.8%
Met[M] 16 2.0%
Phe[F] 20 2.5%
Pro[P] 29 3.6%
Ser[S] 46 5.7%
Thr[T] 43 5.3%
Trp[W] 2 0.2%
Tyr[Y] 15 1.8%
Val[V] 53 6.5%
Total Length 811

Instability index
Instability index (II) 32.91
This classifies the protein as stable

Atomic composition
Carbon 4016
Hydrogen 6637
Nitrogen 1143
Oxygen 1229
Sulfur 23
Total number of atoms 13048
Formula = C4016H6637N1143O1229S23

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 33725 M-1 cm-1
assuming NO Cys residues appear as half cystines 33350 M-1 cm-1
assuming all Cys residues are reduced 33350 M-1 cm-1
assuming all pairs of Cys residues form cystines 33725 M-1 cm-1

Aliphatic index
Aliphatic index 99.32

Coding Region Translation Calculations
Codon Bias 0.187
Codon Adaptation Index 0.207
Frequency of Optimal Codons 0.511
Hydropathicity of Protein -0.405
Aromaticity Score 0.046