A Rare Case of False Positive in a Yeast Two-Hybrid Screening: The Selection of Rearranged Bait Constructs That Produce a Functional Gal4 Activity

1998 ◽  
Vol 262 (1) ◽  
pp. 94-96 ◽  
Author(s):  
Hakim El Housni ◽  
Isabelle Vandenbroere ◽  
David Perez-Morga ◽  
Daniel Christophe ◽  
Isabelle Pirson
Keyword(s):  
False Positive ◽  
Rare Case ◽  
Yeast Two Hybrid ◽  
Two Hybrid ◽  
Hybrid Screening ◽  
Selection Of

scholarly journals Two LIM Domain Proteins and UNC-96 Link UNC-97/PINCH to Myosin Thick Filaments in Caenorhabditis elegans Muscle

2007 ◽  
Vol 18 (11) ◽  
pp. 4317-4326 ◽  
Author(s):  
Hiroshi Qadota ◽  
Kristina B. Mercer ◽  
Rachel K. Miller ◽  
Kozo Kaibuchi ◽  
Guy M. Benian
Keyword(s):  
Caenorhabditis Elegans ◽  
Binding Assays ◽  
Lim Domain ◽  
Yeast Two Hybrid ◽  
Lim Domains ◽  
Thick Filaments ◽  
Vitro Binding ◽  
Two Hybrid ◽  
Hybrid Screening

By yeast two-hybrid screening, we found three novel interactors (UNC-95, LIM-8, and LIM-9) for UNC-97/PINCH in Caenorhabditis elegans. All three proteins contain LIM domains that are required for binding. Among the three interactors, LIM-8 and LIM-9 also bind to UNC-96, a component of sarcomeric M-lines. UNC-96 and LIM-8 also bind to the C-terminal portion of a myosin heavy chain (MHC), MHC A, which resides in the middle of thick filaments in the proximity of M-lines. All interactions identified by yeast two-hybrid assays were confirmed by in vitro binding assays using purified proteins. All three novel UNC-97 interactors are expressed in body wall muscle and by antibodies localize to M-lines. Either a decreased or an increased dosage of UNC-96 results in disorganization of thick filaments. Our previous studies showed that UNC-98, a C2H2 Zn finger protein, acts as a linkage between UNC-97, an integrin-associated protein, and MHC A in myosin thick filaments. In this study, we demonstrate another mechanism by which this linkage occurs: from UNC-97 through LIM-8 or LIM-9/UNC-96 to myosin.

Specific inhibition of transcriptional activity of the constitutive androstane receptor (CAR) by the splicing factor SF3a3

2008 ◽  
Vol 389 (10) ◽  
Author(s):  
Hye Jin Yun ◽  
Jungsun Kwon ◽  
Wongi Seol
Keyword(s):  
Transcriptional Activity ◽  
Constitutive Androstane Receptor ◽  
Splicing Factor ◽  
Yeast Two Hybrid ◽  
Interacting Protein ◽  
Functional Studies ◽  
Reporter Activity ◽  
Inhibitory Function ◽  
Two Hybrid ◽  
Hybrid Screening

Abstract The constitutive androstane receptor (CAR) is a member of the nuclear receptor superfamily and plays an important role in the degradation of xenobiotics in the liver. Using yeast two-hybrid screening, we identified SF3a3, a 60-kDa subunit of the splicing factor 3a complex, as a specific CAR-interacting protein. We further confirmed their interaction by both co-immunoprecipitation and GST pull-down assay. Functional studies showed that overexpression of SF3a3 inhibited the reporter activity driven by a promoter containing CAR binding sequences by up to 50%, whereas reduced expression of SF3a3 activated the same reporter activity by approximately three-fold. The inhibitory function of SF3a3 is independent of the presence of TCPOBOP, a CAR ligand. These data suggest that SF3a3 functions as a co-repressor of CAR transcriptional activity, in addition to its canonical function.

Yeast Two-Hybrid Screening for Proteins that Interact with Nuclear Hormone Receptors

2003 ◽  
pp. 227-248 ◽  
Author(s):  
Bertrand Le Douarin ◽  
David M. Heery ◽  
Claudine Gaudon ◽  
Elmar vom Baur ◽  
Régine Losson
Keyword(s):  
Hormone Receptors ◽  
Nuclear Hormone Receptors ◽  
Yeast Two Hybrid ◽  
Two Hybrid ◽  
Hybrid Screening

Abstract 3600: HspA12B Promotes Angiogenesis through Suppressing AKAP12 and Up-Regulating VEGF Pathway

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Rebecca J Steagall ◽  
Fang Hua ◽  
Mahesh Thirunazukarasu ◽  
Lijun Zhan ◽  
Chuanfu Li ◽  
...  
Keyword(s):  
Cancer Metastasis ◽  
Yeast Two Hybrid ◽  
Vegf Expression ◽  
Tubule Formation ◽  
Interacting Protein ◽  
Over Expression ◽  
Vegf Pathway ◽  
Two Hybrid ◽  
Hybrid Screening

We have previously shown that HspA12B, a member of HspA70 family subfamily 12, is a novel angiogenesis regulator that is preferentially expressed in endothelial cells (ECs) and required for angiogenesis in vitro . The mechanism by which HspA12B regulates angiogenesis, however, is unknown. In this study we identified AKAP12/SSeCKS as a HSPA12B-interacting protein through a yeast two-hybrid screening and confirmed the interaction by co-immunoprecipitation and co-localization. We observed that HspA12B negatively regulated the expression of AKAP12/SSeCKS, a cancer metastasis repressor that inhibits VEGF expression and angiogen-esis. In HUVEC, HspA12B knockdown increased AKAP12 levels, decreased VEGF by more than 75%, and down-regulated Akt and pAkt; whereas HspA12B over expression decreased AKAP12 and more than doubled VEGF levels. We further identified a 32-AA domain in AKAP12 that was capable of interacting with HspA12B. Overexpression of this 32-AA domain in HUVEC disrupted the HspA12B-AKAP12 interaction and decreased VEGF expression by more than 70%, suggesting the importance of HspA12B-AKAP12 interaction in regulating VEGF. We also observed that HspA12B expression was increased more than 2 folds in ECs by hypoxia or shearing stress, and induced in ischemic rat heart. Inhibition of HspA12B abolished hypoxia-induced tubule formation. Adeno-HspA12B promoted angiogenesis in DIVAA assay. We concluded that this is the first evidence that HspA12B promotes angiogenesis through regulating VEGF by way of suppressing AKAP12. Our finding is the first example of an EC-specific molecular chaperone acting as the regulator of angiogenesis.

Yeast Two-Hybrid Screening for Identification of in

2021 ◽  
pp. 95-110
Author(s):  
Hazel McLellan ◽  
Miles R. Armstrong ◽  
Paul R. J. Birch
Keyword(s):  
Yeast Two Hybrid ◽  
Two Hybrid ◽  
Hybrid Screening

scholarly journals Host interactors of effector proteins of the lettuce downy mildew Bremia lactucae obtained by yeast two-hybrid screening

PLoS ONE ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. e0226540 ◽  
Author(s):  
Alexandra J. E. Pelgrom ◽  
Claudia-Nicole Meisrimler ◽  
Joyce Elberse ◽  
Thijs Koorman ◽  
Mike Boxem ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Effector Proteins ◽  
Bremia Lactucae ◽  
Yeast Two Hybrid ◽  
Lettuce Downy Mildew ◽  
Two Hybrid ◽  
Hybrid Screening

Yeast Two-Hybrid Screening for Proteins Interacting With the Anti-Apoptotic Protein A20

2004 ◽  
pp. 223-242 ◽  
Author(s):  
Karen Heyninck ◽  
Sofie Van Huffel ◽  
Marja Kreike ◽  
Rudi Beyaert
Keyword(s):  
Yeast Two Hybrid ◽  
Apoptotic Protein ◽  
Two Hybrid ◽  
Hybrid Screening

Abstract 3033: Identification of the MUC16/CA125 interaction network: Results of a high-throughput yeast two-hybrid screening

2012 ◽  
Author(s):  
Stephan Polterauer ◽  
Dharmarao Thapi ◽  
Nikolaus Schultz ◽  
Ouathek Ouerfelli ◽  
Nancy Chen ◽  
...  
Keyword(s):  
High Throughput ◽  
Interaction Network ◽  
Yeast Two Hybrid ◽  
Two Hybrid ◽  
Hybrid Screening
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