SPB4/YFL002C 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] 31 5.1%
Arg[R] 35 5.8%
Asn[N] 31 5.1%
Asp[D] 36 5.9%
Cys[C] 6 1.0%
Gln[Q] 17 2.8%
Glu[E] 45 7.4%
Gly[G] 26 4.3%
His[H] 6 1.0%
Ile[I] 36 5.9%
Leu[L] 64 10.6%
Lys[K] 59 9.7%
Met[M] 15 2.5%
Phe[F] 31 5.1%
Pro[P] 24 4.0%
Ser[S] 41 6.8%
Thr[T] 37 6.1%
Trp[W] 6 1.0%
Tyr[Y] 16 2.6%
Val[V] 44 7.3%
Total Length 606

Instability index
Instability index (II) 36.55
This classifies the protein as stable

Atomic composition
Carbon 3116
Hydrogen 4998
Nitrogen 836
Oxygen 911
Sulfur 21
Total number of atoms 9882
Formula = C3116H4998N836O911S21

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 57215 M-1 cm-1
assuming NO Cys residues appear as half cystines 56840 M-1 cm-1
assuming all Cys residues are reduced 56840 M-1 cm-1
assuming all pairs of Cys residues form cystines 57215 M-1 cm-1

Aliphatic index
Aliphatic index 90.53

Coding Region Translation Calculations
Codon Bias 0.042
Codon Adaptation Index 0.130
Frequency of Optimal Codons 0.432
Hydropathicity of Protein -0.356
Aromaticity Score 0.087