Escherichia coli (Migula 1895) Castellani and Chalmers 1919
9494 dsm-9494 dsm9494 dsm 9494 Escherichia coli
Other collection no.
or WDCM no.:
or WDCM no.:
ATCC 49980, CECT 7326, NCIMB 11187, WP2
country of origin unknown
Date of sampling:
Nagoya Protocol Restrictions:
There are NO known Nagoya Protocol restrictions for this strain.
<- NCIMB <- M. Green, Univ. Sussex, Brighton
<- NCIMB <- M. Green, Univ. Sussex, Brighton. [WP2]. Tryptophan-requiring, radiation resistant derivative of strain B (the strain used by Luria and Delbruck in their original demonstration of mutation in bacteria). WP2 is the repair-proficient parent strain of WP2uvrA which lacks excision repair (DSM 9495). Test strain of a set for mutagen screening: in these strains, agents causing base substitution mutations can be shown to increase the frequency of Trp+ revertants. Four tests are described: Spot tests, treat and plate tests, a simplified fluctuation test and use of a liver microsomal fraction. The Trp+ reversion system does not detect agents which cause frameshift mutations. This E. coli test system is complementary to the S. typhimurium system of Ames. (Medium 381, 37°C).
For detailed information:
1 (classification according to German TRBA)
|Freeze Dried||90,- €|
|Active culture on request||210,- €|
|Price Category for this culture: 1|
Freight and handling charges will be added. See price list.