SPP41/YDR464W 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] 100 7.0%
Arg[R] 71 4.9%
Asn[N] 91 6.3%
Asp[D] 87 6.1%
Cys[C] 3 0.2%
Gln[Q] 62 4.3%
Glu[E] 149 10.4%
Gly[G] 36 2.5%
His[H] 32 2.2%
Ile[I] 74 5.2%
Leu[L] 100 7.0%
Lys[K] 183 12.8%
Met[M] 15 1.0%
Phe[F] 23 1.6%
Pro[P] 84 5.9%
Ser[S] 138 9.6%
Thr[T] 93 6.5%
Trp[W] 8 0.6%
Tyr[Y] 15 1.0%
Val[V] 71 4.9%
Total Length 1435

Instability index
Instability index (II) 54.06
This classifies the protein as unstable

Atomic composition
Carbon 6974
Hydrogen 11456
Nitrogen 2056
Oxygen 2307
Sulfur 18
Total number of atoms 22811
Formula = C6974H11456N2056O2307S18

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 66475 M-1 cm-1
assuming NO Cys residues appear as half cystines 66350 M-1 cm-1
assuming all Cys residues are reduced 66350 M-1 cm-1
assuming all pairs of Cys residues form cystines 66475 M-1 cm-1

Aliphatic index
Aliphatic index 68.61

Coding Region Translation Calculations
Codon Bias 0.051
Codon Adaptation Index 0.141
Frequency of Optimal Codons 0.443
Hydropathicity of Protein -1.085
Aromaticity Score 0.032