Vertebrate Homology to Yeast
Vertebrate Homology to Yeast
Retrieve a TBLASTN report (GenBank Release: Apr-May 1997)
Retrieve a chromosome summary table (GenBank Release: Oct-Nov 1996)
Summary of Vertebrate Homologs Based on P-Value
GenBank Release: Oct-Nov 1996
| TBLASTN P-value |
Number of ORFs at P-value or Lower |
Percent of Total ORFs (n=6216) |
Percent Identity* |
| 1e-10 |
1907 |
30.1 |
20-40 |
| 1e-20 |
1527 |
24.6 |
30-40 |
| 1e-40 |
1090 |
17.5 |
40-50 |
| 1e-60 |
807 |
13.0 |
50-60 |
| 1e-80 |
623 |
10.0 |
60-70 |
| 1e-100 |
490 |
7.9 |
70-80 |
| 1e-150 |
274 |
4.4 |
80-90 |
| 1e-200 |
161 |
2.6 |
90- 100 |
*There is no straightforward way to convert P-value into percent identity.
The numbers listed
here are for a protein of average size with similarity covering at least 50% of its length.
The numbers can vary quite a bit: a 100-residue protein with a P-value of 1e-10 may show 70% identity
but a 400-residue protein with the same P-value may show only 30% identity. P-values are also
sensitive to biases in sequence composition. Low-complexity regions and short repeats were filtered out for
the data reported here.
Steve A. Chervitz and the SGD team
http://genome-www.stanford.edu/mammal/vertebrate.html