Nscriptional regulatory properties, and that individual sites within each element have unique binding profiles for Stat5b. Taken together, our data define a framework for discerning how Stat5b acts in vivo as the key mediator of GH-regulated IGF-I gene transcription.erica, MA), anti-a2tubulin and anti-Flag (M2), Sigma-Aldrich (St. Louis, MO), anti-Stat5b, Invitrogen. Goat-anti-rabbit IgG-IR800 and goat anti-mouse IgG-IR680 were from Rockland Immunochemical (Gilbertsville, PA), and goat anti-mouse IgG1-Alexa 488 was from Invitrogen – Molecular Probes (Eugene, OR). Hoechst 33258 nuclear dye was from Polysciences (Warrington, PA). Oligonucleotides were synthesized at the OHSU DNA Services Core, at Oligos Etc (Wilsonville, OR), and at Eurofms MWG Operon (Huntsville, AL). All other chemicals were reagent grade and were purchased from commercial suppliers.Recombinant PlasmidsThe following have been described previously: the expression plasmid in pcDNA3 for mouse GH receptor [23,29], and reporter gene plasmids in pGL2 containing rat Igf1 promoter 2 (Igf1 P2-Luc and derivatives [34]). Flag-epitope tagged wild-type (WT), dominant negative (DN), and constitutively-active (CA) rat Stat5bTable 2. DNA Sequences of Oligonucleotide Probes [core Stat5b binding site underlined].Probe Top Strand (59 to 39) R2 R3 R4 R13 R13.5 R34 
R35 25033180 R53 R54 R57 R58 R59 R60 R61 CACCAATTCATGGAAATTAAAC AAAATATTTCCTGGAACTAAA CAAAGAATTTCTTCTTAGAATTTGTCAATTC CTTCCTTCCTTGAAACTG GAAACTGCCTTTTCCGTTGAATCTATCCTTCC GGGCCTTCCTGGAAGAAAG TCTGCTTCTTAGAATGAAG TCATCTTTCAGGGAAATCTAG GAATCCTTGTGTTTCTCTGAAATCCATAGCTAG AAGTTTTTCGAAGAATTGGAA TCCAGTTCTCAGAAAGGAA GGAAATTCGCAGAAGTGAG CCATGATTCCTAGAAAAGATGT CATAGTTCACAGAAAAGAGALabeled Unlabeled X X X X X X X X X X X X X X X X XMaterials and Methods MaterialsFetal calf serum, Dulbecco’s modified Eagle’s medium, 23977191 and phosphate-buffered saline were purchased from 101043-37-2 site Mediatech-Cellgro (Herndon, VA). Transit-LT1 was from Mirus (Madison, WI), and the QuikChange site-directed mutagenesis kit from Stratagene (La Jolla, CA). Restriction enzymes, buffers, ligases, polymerases, and protease inhibitor tablets were from Roche Applied Sciences (Indianapolis, IN). Recombinant rat GH was purchased from the National Hormone and Pituitary Program, NIDDK, National Institutes of Health. Trypsin/EDTA solution was from Invitrogen (Camarillo, CA). The BCA and 660 nm 
protein assay kits were from Pierce Biotechnologies (Rockford, IL) and AquaBlock EIA/ WIB solution from East Coast Biologicals (North Berwick, ME). QIA-Quick PCR purification kit was from Qiagen (Valencia, CA) and okadaic acid from Alexis Biochemicals (San Diego, CA). Primary antibodies were obtained from the following vendors: anti-phospho-Stat5 (clone 8-5-2) and anti-Creb, Millipore (Bill-doi:10.1371/journal.pone.0050278.tTable 1. DNA Sequences of Oligonuceotide Primers for Cloning Stat5b Domains into Igf1 Promoter 2 Reporter Plasmid.Domain R2? R13 R34?5 R34?5 R53?4 R57?9 R60?Location (bp from 59 end of Size (bp) Igf1)# 468 297 84 209 292 208 241 286376 263005 +3714 +3638 +26644 +43721 +Top Strand (59 to 39)* BKCCAAGACAATCCCCTGCATGCTAT XKCTAAGATCCCCCTTGCTGATTTCBottom Strand (59 to 39)* BNCCCTTTTGATTAATTGGGCTCAGG XNGGACGGAGTTCAGTTTTGACACSee Woelfle J, Chia DJ, Rotwein P (2003) J Biol Chem 278:51261?1266 XKLACCCTGTTGGTGACTCTTTCCA BKGGCACATGCCATTGACCAGATGATGTG BLKTATTCCTCCCAGCTGTGTGTCAC BKAAGGGTTGCTGAGTGGTGGGGT XNAGCCAAATGACATCCCTGCCAA BNCTCTCTCCAAAAGAAATCTCCATTCACC Sudan I site BNTGGGACTTGGTCTGAGGCA BPAGCTTGACCTTTGTCTTCTGAAA.Nscriptional regulatory properties, and that individual sites within each element have unique binding profiles for Stat5b. Taken together, our data define a framework for discerning how Stat5b acts in vivo as the key mediator of GH-regulated IGF-I gene transcription.erica, MA), anti-a2tubulin and anti-Flag (M2), Sigma-Aldrich (St. Louis, MO), anti-Stat5b, Invitrogen. Goat-anti-rabbit IgG-IR800 and goat anti-mouse IgG-IR680 were from Rockland Immunochemical (Gilbertsville, PA), and goat anti-mouse IgG1-Alexa 488 was from Invitrogen – Molecular Probes (Eugene, OR). Hoechst 33258 nuclear dye was from Polysciences (Warrington, PA). Oligonucleotides were synthesized at the OHSU DNA Services Core, at Oligos Etc (Wilsonville, OR), and at Eurofms MWG Operon (Huntsville, AL). All other chemicals were reagent grade and were purchased from commercial suppliers.Recombinant PlasmidsThe following have been described previously: the expression plasmid in pcDNA3 for mouse GH receptor [23,29], and reporter gene plasmids in pGL2 containing rat Igf1 promoter 2 (Igf1 P2-Luc and derivatives [34]). Flag-epitope tagged wild-type (WT), dominant negative (DN), and constitutively-active (CA) rat Stat5bTable 2. DNA Sequences of Oligonucleotide Probes [core Stat5b binding site underlined].Probe Top Strand (59 to 39) R2 R3 R4 R13 R13.5 R34 R35 25033180 R53 R54 R57 R58 R59 R60 R61 CACCAATTCATGGAAATTAAAC AAAATATTTCCTGGAACTAAA CAAAGAATTTCTTCTTAGAATTTGTCAATTC CTTCCTTCCTTGAAACTG GAAACTGCCTTTTCCGTTGAATCTATCCTTCC GGGCCTTCCTGGAAGAAAG TCTGCTTCTTAGAATGAAG TCATCTTTCAGGGAAATCTAG GAATCCTTGTGTTTCTCTGAAATCCATAGCTAG AAGTTTTTCGAAGAATTGGAA TCCAGTTCTCAGAAAGGAA GGAAATTCGCAGAAGTGAG CCATGATTCCTAGAAAAGATGT CATAGTTCACAGAAAAGAGALabeled Unlabeled X X X X X X X X X X X X X X X X XMaterials and Methods MaterialsFetal calf serum, Dulbecco’s modified Eagle’s medium, 23977191 and phosphate-buffered saline were purchased from Mediatech-Cellgro (Herndon, VA). Transit-LT1 was from Mirus (Madison, WI), and the QuikChange site-directed mutagenesis kit from Stratagene (La Jolla, CA). Restriction enzymes, buffers, ligases, polymerases, and protease inhibitor tablets were from Roche Applied Sciences (Indianapolis, IN). Recombinant rat GH was purchased from the National Hormone and Pituitary Program, NIDDK, National Institutes of Health. Trypsin/EDTA solution was from Invitrogen (Camarillo, CA). The BCA and 660 nm protein assay kits were from Pierce Biotechnologies (Rockford, IL) and AquaBlock EIA/ WIB solution from East Coast Biologicals (North Berwick, ME). QIA-Quick PCR purification kit was from Qiagen (Valencia, CA) and okadaic acid from Alexis Biochemicals (San Diego, CA). Primary antibodies were obtained from the following vendors: anti-phospho-Stat5 (clone 8-5-2) and anti-Creb, Millipore (Bill-doi:10.1371/journal.pone.0050278.tTable 1. DNA Sequences of Oligonuceotide Primers for Cloning Stat5b Domains into Igf1 Promoter 2 Reporter Plasmid.Domain R2? R13 R34?5 R34?5 R53?4 R57?9 R60?Location (bp from 59 end of Size (bp) Igf1)# 468 297 84 209 292 208 241 286376 263005 +3714 +3638 +26644 +43721 +Top Strand (59 to 39)* BKCCAAGACAATCCCCTGCATGCTAT XKCTAAGATCCCCCTTGCTGATTTCBottom Strand (59 to 39)* BNCCCTTTTGATTAATTGGGCTCAGG XNGGACGGAGTTCAGTTTTGACACSee Woelfle J, Chia DJ, Rotwein P (2003) J Biol Chem 278:51261?1266 XKLACCCTGTTGGTGACTCTTTCCA BKGGCACATGCCATTGACCAGATGATGTG BLKTATTCCTCCCAGCTGTGTGTCAC BKAAGGGTTGCTGAGTGGTGGGGT XNAGCCAAATGACATCCCTGCCAA BNCTCTCTCCAAAAGAAATCTCCATTCACC BNTGGGACTTGGTCTGAGGCA BPAGCTTGACCTTTGTCTTCTGAAA.
