SPT5/YML010W 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] 78 7.3%
Arg[R] 60 5.6%
Asn[N] 58 5.5%
Asp[D] 92 8.7%
Cys[C] 3 0.3%
Gln[Q] 48 4.5%
Glu[E] 76 7.1%
Gly[G] 109 10.3%
His[H] 15 1.4%
Ile[I] 55 5.2%
Leu[L] 54 5.1%
Lys[K] 73 6.9%
Met[M] 16 1.5%
Phe[F] 23 2.2%
Pro[P] 39 3.7%
Ser[S] 91 8.6%
Thr[T] 74 7.0%
Trp[W] 15 1.4%
Tyr[Y] 23 2.2%
Val[V] 61 5.7%
Total Length 1063

Instability index
Instability index (II) 36.40
This classifies the protein as stable

Atomic composition
Carbon 4951
Hydrogen 7861
Nitrogen 1467
Oxygen 1694
Sulfur 19
Total number of atoms 15992
Formula = C4951H7861N1467O1694S19

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 116895 M-1 cm-1
assuming NO Cys residues appear as half cystines 116770 M-1 cm-1
assuming all Cys residues are reduced 116770 M-1 cm-1
assuming all pairs of Cys residues form cystines 116895 M-1 cm-1

Aliphatic index
Aliphatic index 63.97

Coding Region Translation Calculations
Codon Bias 0.181
Codon Adaptation Index 0.199
Frequency of Optimal Codons 0.511
Hydropathicity of Protein -0.832
Aromaticity Score 0.057