Trouble with yeast two hybrid positives

subhash subhash at
Tue May 1 06:13:19 EST 2001

    I have been doing two hybrid screening with a whole length protein.
I had go some His+ colonies and then used them for LacZ sceening.
Positives from this screen were then checked using PCR with primers on
either sides of MCS of the 'prey' plasmid. But In all of them I am
getting a 200 basepair fragment- none of the His+, LacZ positive strains

are showing an insert in this PCR screen. I would like to know if
anybody has experienced this kind of problem in yeast two hybrid
sceening. I am using L-40 strain of yeast. As bait plasmid I have
pBTM116 and the library is in pACT2. I really hope somebody can help me
out. Thanks.
subhash at


YEAST bionet newsgroup see:
YEAST e-mail: messages sent to yeast at
subscribe: e-mail biosci-server at with: subscribe yeast
unsubscribe: e-mail biosci-server at with: unsubscribe yeast
YEAST on the WWW:
problems with the YEAST newsgroup? E-mail the moderator: francis at

More information about the Yeast mailing list