STE5/YDR103W 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] 36 3.9%
Arg[R] 41 4.5%
Asn[N] 72 7.9%
Asp[D] 63 6.9%
Cys[C] 16 1.7%
Gln[Q] 28 3.1%
Glu[E] 56 6.1%
Gly[G] 33 3.6%
His[H] 20 2.2%
Ile[I] 68 7.4%
Leu[L] 93 10.1%
Lys[K] 50 5.5%
Met[M] 10 1.1%
Phe[F] 41 4.5%
Pro[P] 51 5.6%
Ser[S] 112 12.2%
Thr[T] 58 6.3%
Trp[W] 6 0.7%
Tyr[Y] 20 2.2%
Val[V] 43 4.7%
Total Length 917

Instability index
Instability index (II) 48.01
This classifies the protein as unstable

Atomic composition
Carbon 4517
Hydrogen 7136
Nitrogen 1236
Oxygen 1446
Sulfur 26
Total number of atoms 14361
Formula = C4517H7136N1236O1446S26

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 63800 M-1 cm-1
assuming NO Cys residues appear as half cystines 62800 M-1 cm-1
assuming all Cys residues are reduced 62800 M-1 cm-1
assuming all pairs of Cys residues form cystines 63800 M-1 cm-1

Aliphatic index
Aliphatic index 86.00

Coding Region Translation Calculations
Codon Bias 0.035
Codon Adaptation Index 0.135
Frequency of Optimal Codons 0.430
Hydropathicity of Protein -0.423
Aromaticity Score 0.073