Statistics

This page contains statistics of the content of SPdb i.e. signal sequences stored.
All the tables on this page are automatically generated when SPdb is updated.

	Archaea	Bacteria	Eukaryotes	Viruses	Sub-Total
Verified Sequences	7	501	1984	20	2512
Unverified Sequences	99	6455	17348	1019	24921
TOTAL	106	6956	19332	1039	27433

Table 1: Distribution of signal sequences in SPdb

Category	Number Of Entries/Sequences
(a) Swiss-Prot and papers quoted same putative position	342
(b) Swiss-Prot and papers quoted different position	118
(c)(1) No references or relevant references provided (2) Can't obtain the papers due to subscription-restriction (3) No access to very old papers	241
(d) Can't locate or obtain the position information from the papers	562
TOTAL	1263

Table 2: Distribution of 1263 signal sequences filtered off in the manual curation step

No.	Name of Species	Frequency
1	Homo sapiens (Human)	595
2	Mus musculus (Mouse)	167
3	Rattus norvegicus (Rat)	146
4	Bos taurus (Bovine)	94
5	Escherichia coli (strain K12)	67
6	Gallus gallus (Chicken)	44
7	Sus scrofa (Pig)	41
8	Oryctolagus cuniculus (Rabbit)	31
9	Escherichia coli	30
10	Triticum aestivum (Wheat)	29
11	Xenopus laevis (African clawed frog)	20
12	Drosophila melanogaster (Fruit fly)	19
13	Mesobuthus martensii (Manchurian scorpion) (Buthus martensii)	19
14	Staphylococcus aureus	19
15	Bombyx mori (Silk moth)	18
16	Ovis aries (Sheep)	18
17	Pseudomonas aeruginosa	18
18	Canis familiaris (Dog)	17
19	Nicotiana tabacum (Common tobacco)	16
20	Zea mays (Maize)	15
21	Glycine max (Soybean)	13
22	Cavia porcellus (Guinea pig)	13
23	Hordeum vulgare (Barley)	13
24	Saccharomyces cerevisiae (Baker's yeast)	12
25	Equus caballus (Horse)	11

Table 3: Top 25 Most Represented Species (Experimentally Verified Set)