Skip to main content


Follow @TetrahymenaSC

We are now shipping live cells, plasmids, genomic DNA, and media packets, although shipping may take somewhat longer than normal. Contact us with any questions.


Stock IDSD00635
Strain NameIA342
AKAbcd1-1 II
SpeciesT. thermophila
Genetic Descriptionbcd1-1/bcd1-1; eja1-1/eja1-1 (bcd1-1; eja1-1; bcd1, eja1, II)
MAC Knockins/outs
MIC Knockins/outs
Gene of InterestBCD1 (broadened cortical domains); EJA1 (enhancer of janus-A)
OriginGenomic exclusion progeny following two successive generations of outcrossing to IA264 of a mutant clone resulting from nitrosoguanidine mutagenesis of IA264 in 1984 followed by cytogamy. Sister clone to IA344.
PublicationsGene and this clone:
Cole ES, Frankel J, Jenkins LM. 1987. Bcd: A mutation affecting the width of organelle domains in the cortex of tetrahymena thermophila. Development Genes and Evolution 196(7):421-33.

Cole ES, Frankel J, Jenkins LM. 1988. Interactions between janus and bcd cortical pattern mutants in tetrahymena thermophila. Development Genes and Evolution 197(8):476-89.

Cole ES and Stuart KR. 1991. Biochemical and cytological evidence for an overabundance of mucocysts in the bcd pattern mutant of tetrahymena thermophila. J Protozool 38(6):537-47.
CommentsA mutation that brings about a broadening of oral and CVP domains, originally thought to be non-temperature sensitive, but capable of expressing an extreme phenotype at high temperature (Cole et al. 1988). Exhibits conjugal block. There is no evidence for any effect of eja1-1 on expression of bcd.
Research Resource IdentifierTSC_SD00635
Requires MTA?No
Academic cost $45