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. 1992 May;12(5):2432–2443. doi: 10.1128/mcb.12.5.2432

Expression cloning of a novel zinc finger protein that binds to the c-fos serum response element.

R M Attar 1, M Z Gilman 1
PMCID: PMC364416  PMID: 1569959

Abstract

Induction of c-fos transcription by serum growth factors requires the serum response element (SRE). The SRE is a multifunctional element which responds to several positively and negatively acting signals. To identify cellular proteins that might mediate functions of the SRE, we screened a human cDNA expression library with an SRE probe. We report the isolation and characterization of SRE-ZBP, a previously unidentified SRE-binding protein. SRE-ZBP is a member of the C2H2 zinc finger family of proteins exemplified by TFIIIA and the Drosophila Krüppel protein. The seven tandemly repeated zinc finger motifs in SRE-ZBP are sufficient for high-affinity binding to the SRE. We show that SRE-ZBP is a nuclear protein and identify a candidate cellular protein encoded by the SRE-ZBP gene. Because we cannot detect any DNA-binding activity attributable to the endogenous protein, we propose that SRE-ZBP activity may be subject to posttranslational regulation. Like c-fos mRNA, SRE-ZBP mRNA is serum inducible in HeLa cells, but with slower kinetics. The role of SRE-ZBP in the regulation of c-fos transcription remains unestablished, but this protein binds to a region of the SRE where mutations lead to derepression.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Almendral J. M., Sommer D., Macdonald-Bravo H., Burckhardt J., Perera J., Bravo R. Complexity of the early genetic response to growth factors in mouse fibroblasts. Mol Cell Biol. 1988 May;8(5):2140–2148. doi: 10.1128/mcb.8.5.2140. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Aurora R., Herr W. Segments of the POU domain influence one another's DNA-binding specificity. Mol Cell Biol. 1992 Feb;12(2):455–467. doi: 10.1128/mcb.12.2.455. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Berg J. M. Potential metal-binding domains in nucleic acid binding proteins. Science. 1986 Apr 25;232(4749):485–487. doi: 10.1126/science.2421409. [DOI] [PubMed] [Google Scholar]
  4. Berkowitz L. A., Riabowol K. T., Gilman M. Z. Multiple sequence elements of a single functional class are required for cyclic AMP responsiveness of the mouse c-fos promoter. Mol Cell Biol. 1989 Oct;9(10):4272–4281. doi: 10.1128/mcb.9.10.4272. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Buckler A. J., Pelletier J., Haber D. A., Glaser T., Housman D. E. Isolation, characterization, and expression of the murine Wilms' tumor gene (WT1) during kidney development. Mol Cell Biol. 1991 Mar;11(3):1707–1712. doi: 10.1128/mcb.11.3.1707. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Büscher M., Rahmsdorf H. J., Litfin M., Karin M., Herrlich P. Activation of the c-fos gene by UV and phorbol ester: different signal transduction pathways converge to the same enhancer element. Oncogene. 1988 Sep;3(3):301–311. [PubMed] [Google Scholar]
  7. Call K. M., Glaser T., Ito C. Y., Buckler A. J., Pelletier J., Haber D. A., Rose E. A., Kral A., Yeger H., Lewis W. H. Isolation and characterization of a zinc finger polypeptide gene at the human chromosome 11 Wilms' tumor locus. Cell. 1990 Feb 9;60(3):509–520. doi: 10.1016/0092-8674(90)90601-a. [DOI] [PubMed] [Google Scholar]
  8. Caubet J. F. c-fos proto-oncogene expression in the nervous system during mouse development. Mol Cell Biol. 1989 May;9(5):2269–2272. doi: 10.1128/mcb.9.5.2269. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Chavrier P., Zerial M., Lemaire P., Almendral J., Bravo R., Charnay P. A gene encoding a protein with zinc fingers is activated during G0/G1 transition in cultured cells. EMBO J. 1988 Jan;7(1):29–35. doi: 10.1002/j.1460-2075.1988.tb02780.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Chowdhury K., Deutsch U., Gruss P. A multigene family encoding several "finger" structures is present and differentially active in mammalian genomes. Cell. 1987 Mar 13;48(5):771–778. doi: 10.1016/0092-8674(87)90074-2. [DOI] [PubMed] [Google Scholar]
  11. Chowdhury K., Dressler G., Breier G., Deutsch U., Gruss P. The primary structure of the murine multifinger gene mKr2 and its specific expression in developing and adult neurons. EMBO J. 1988 May;7(5):1345–1353. doi: 10.1002/j.1460-2075.1988.tb02950.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Chowdhury K., Rohdewohld H., Gruss P. Specific and ubiquitous expression of different Zn finger protein genes in the mouse. Nucleic Acids Res. 1988 Nov 11;16(21):9995–10011. doi: 10.1093/nar/16.21.9995. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Christy B. A., Lau L. F., Nathans D. A gene activated in mouse 3T3 cells by serum growth factors encodes a protein with "zinc finger" sequences. Proc Natl Acad Sci U S A. 1988 Nov;85(21):7857–7861. doi: 10.1073/pnas.85.21.7857. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Christy B., Nathans D. DNA binding site of the growth factor-inducible protein Zif268. Proc Natl Acad Sci U S A. 1989 Nov;86(22):8737–8741. doi: 10.1073/pnas.86.22.8737. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Cunliffe V., Koopman P., McLaren A., Trowsdale J. A mouse zinc finger gene which is transiently expressed during spermatogenesis. EMBO J. 1990 Jan;9(1):197–205. doi: 10.1002/j.1460-2075.1990.tb08096.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Dignam J. D., Lebovitz R. M., Roeder R. G. Accurate transcription initiation by RNA polymerase II in a soluble extract from isolated mammalian nuclei. Nucleic Acids Res. 1983 Mar 11;11(5):1475–1489. doi: 10.1093/nar/11.5.1475. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Field J., Nikawa J., Broek D., MacDonald B., Rodgers L., Wilson I. A., Lerner R. A., Wigler M. Purification of a RAS-responsive adenylyl cyclase complex from Saccharomyces cerevisiae by use of an epitope addition method. Mol Cell Biol. 1988 May;8(5):2159–2165. doi: 10.1128/mcb.8.5.2159. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Fisch T. M., Prywes R., Roeder R. G. c-fos sequence necessary for basal expression and induction by epidermal growth factor, 12-O-tetradecanoyl phorbol-13-acetate and the calcium ionophore. Mol Cell Biol. 1987 Oct;7(10):3490–3502. doi: 10.1128/mcb.7.10.3490. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Franza B. R., Jr, Sambucetti L. C., Cohen D. R., Curran T. Analysis of Fos protein complexes and Fos-related antigens by high-resolution two-dimensional gel electrophoresis. Oncogene. 1987 May;1(2):213–221. [PubMed] [Google Scholar]
  20. Gilman M. Z., Berkowitz L. A., Feramisco J. R., Franza B. R., Jr, Graham R. M., Riabowol K. T., Ryan W. A., Jr Intracellular mediators of c-fos induction. Cold Spring Harb Symp Quant Biol. 1988;53(Pt 2):761–767. doi: 10.1101/sqb.1988.053.01.086. [DOI] [PubMed] [Google Scholar]
  21. Gilman M. Z. The c-fos serum response element responds to protein kinase C-dependent and -independent signals but not to cyclic AMP. Genes Dev. 1988 Apr;2(4):394–402. doi: 10.1101/gad.2.4.394. [DOI] [PubMed] [Google Scholar]
  22. Gilman M. Z., Wilson R. N., Weinberg R. A. Multiple protein-binding sites in the 5'-flanking region regulate c-fos expression. Mol Cell Biol. 1986 Dec;6(12):4305–4316. doi: 10.1128/mcb.6.12.4305. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Graham R., Gilman M. Distinct protein targets for signals acting at the c-fos serum response element. Science. 1991 Jan 11;251(4990):189–192. doi: 10.1126/science.1898992. [DOI] [PubMed] [Google Scholar]
  24. Greenberg M. E., Siegfried Z., Ziff E. B. Mutation of the c-fos gene dyad symmetry element inhibits serum inducibility of transcription in vivo and the nuclear regulatory factor binding in vitro. Mol Cell Biol. 1987 Mar;7(3):1217–1225. doi: 10.1128/mcb.7.3.1217. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Henthorn P. S., Raducha M., Edwards Y. H., Weiss M. J., Slaughter C., Lafferty M. A., Harris H. Nucleotide and amino acid sequences of human intestinal alkaline phosphatase: close homology to placental alkaline phosphatase. Proc Natl Acad Sci U S A. 1987 Mar;84(5):1234–1238. doi: 10.1073/pnas.84.5.1234. [DOI] [PMC free article] [PubMed] [Google Scholar]
  26. Herrera R. E., Shaw P. E., Nordheim A. Occupation of the c-fos serum response element in vivo by a multi-protein complex is unaltered by growth factor induction. Nature. 1989 Jul 6;340(6228):68–70. doi: 10.1038/340068a0. [DOI] [PubMed] [Google Scholar]
  27. Kadonaga J. T., Carner K. R., Masiarz F. R., Tjian R. Isolation of cDNA encoding transcription factor Sp1 and functional analysis of the DNA binding domain. Cell. 1987 Dec 24;51(6):1079–1090. doi: 10.1016/0092-8674(87)90594-0. [DOI] [PubMed] [Google Scholar]
  28. Kato N., Shimotohno K., VanLeeuwen D., Cohen M. Human proviral mRNAs down regulated in choriocarcinoma encode a zinc finger protein related to Krüppel. Mol Cell Biol. 1990 Aug;10(8):4401–4405. doi: 10.1128/mcb.10.8.4401. [DOI] [PMC free article] [PubMed] [Google Scholar]
  29. Kinzler K. W., Vogelstein B. The GLI gene encodes a nuclear protein which binds specific sequences in the human genome. Mol Cell Biol. 1990 Feb;10(2):634–642. doi: 10.1128/mcb.10.2.634. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Kunkel T. A. Rapid and efficient site-specific mutagenesis without phenotypic selection. Proc Natl Acad Sci U S A. 1985 Jan;82(2):488–492. doi: 10.1073/pnas.82.2.488. [DOI] [PMC free article] [PubMed] [Google Scholar]
  31. König H. Cell-type specific multiprotein complex formation over the c-fos serum response element in vivo: ternary complex formation is not required for the induction of c-fos. Nucleic Acids Res. 1991 Jul 11;19(13):3607–3611. doi: 10.1093/nar/19.13.3607. [DOI] [PMC free article] [PubMed] [Google Scholar]
  32. König H., Ponta H., Rahmsdorf U., Büscher M., Schönthal A., Rahmsdorf H. J., Herrlich P. Autoregulation of fos: the dyad symmetry element as the major target of repression. EMBO J. 1989 Sep;8(9):2559–2566. doi: 10.1002/j.1460-2075.1989.tb08394.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  33. Lamb N. J., Fernandez A., Tourkine N., Jeanteur P., Blanchard J. M. Demonstration in living cells of an intragenic negative regulatory element within the rodent c-fos gene. Cell. 1990 May 4;61(3):485–496. doi: 10.1016/0092-8674(90)90530-r. [DOI] [PubMed] [Google Scholar]
  34. Lemaire P., Revelant O., Bravo R., Charnay P. Two mouse genes encoding potential transcription factors with identical DNA-binding domains are activated by growth factors in cultured cells. Proc Natl Acad Sci U S A. 1988 Jul;85(13):4691–4695. doi: 10.1073/pnas.85.13.4691. [DOI] [PMC free article] [PubMed] [Google Scholar]
  35. Leung S., Miyamoto N. G. Point mutational analysis of the human c-fos serum response factor binding site. Nucleic Acids Res. 1989 Feb 11;17(3):1177–1195. doi: 10.1093/nar/17.3.1177. [DOI] [PMC free article] [PubMed] [Google Scholar]
  36. Licht J. D., Grossel M. J., Figge J., Hansen U. M. Drosophila Krüppel protein is a transcriptional repressor. Nature. 1990 Jul 5;346(6279):76–79. doi: 10.1038/346076a0. [DOI] [PubMed] [Google Scholar]
  37. Metz R., Ziff E. cAMP stimulates the C/EBP-related transcription factor rNFIL-6 to trans-locate to the nucleus and induce c-fos transcription. Genes Dev. 1991 Oct;5(10):1754–1766. doi: 10.1101/gad.5.10.1754. [DOI] [PubMed] [Google Scholar]
  38. Miller J., McLachlan A. D., Klug A. Repetitive zinc-binding domains in the protein transcription factor IIIA from Xenopus oocytes. EMBO J. 1985 Jun;4(6):1609–1614. doi: 10.1002/j.1460-2075.1985.tb03825.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  39. Miskimins W. K., Roberts M. P., McClelland A., Ruddle F. H. Use of a protein-blotting procedure and a specific DNA probe to identify nuclear proteins that recognize the promoter region of the transferrin receptor gene. Proc Natl Acad Sci U S A. 1985 Oct;82(20):6741–6744. doi: 10.1073/pnas.82.20.6741. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Mohun T., Garrett N., Treisman R. Xenopus cytoskeletal actin and human c-fos gene promoters share a conserved protein-binding site. EMBO J. 1987 Mar;6(3):667–673. doi: 10.1002/j.1460-2075.1987.tb04806.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  41. Moses K., Rubin G. M. Glass encodes a site-specific DNA-binding protein that is regulated in response to positional signals in the developing Drosophila eye. Genes Dev. 1991 Apr;5(4):583–593. doi: 10.1101/gad.5.4.583. [DOI] [PubMed] [Google Scholar]
  42. Norman C., Runswick M., Pollock R., Treisman R. Isolation and properties of cDNA clones encoding SRF, a transcription factor that binds to the c-fos serum response element. Cell. 1988 Dec 23;55(6):989–1003. doi: 10.1016/0092-8674(88)90244-9. [DOI] [PubMed] [Google Scholar]
  43. Pavletich N. P., Pabo C. O. Zinc finger-DNA recognition: crystal structure of a Zif268-DNA complex at 2.1 A. Science. 1991 May 10;252(5007):809–817. doi: 10.1126/science.2028256. [DOI] [PubMed] [Google Scholar]
  44. Preiss A., Rosenberg U. B., Kienlin A., Seifert E., Jäckle H. Molecular genetics of Krüppel, a gene required for segmentation of the Drosophila embryo. Nature. 1985 Jan 3;313(5997):27–32. doi: 10.1038/313027a0. [DOI] [PubMed] [Google Scholar]
  45. Prywes R., Roeder R. G. Inducible binding of a factor to the c-fos enhancer. Cell. 1986 Dec 5;47(5):777–784. doi: 10.1016/0092-8674(86)90520-9. [DOI] [PubMed] [Google Scholar]
  46. Rauscher F. J., 3rd, Morris J. F., Tournay O. E., Cook D. M., Curran T. Binding of the Wilms' tumor locus zinc finger protein to the EGR-1 consensus sequence. Science. 1990 Nov 30;250(4985):1259–1262. doi: 10.1126/science.2244209. [DOI] [PubMed] [Google Scholar]
  47. Riabowol K. T., Gilman M. Z., Feramisco J. R. Microinjection of the catalytic subunit of cAMP-dependent protein kinase induces expression of the c-fos gene. Cold Spring Harb Symp Quant Biol. 1988;53(Pt 1):85–90. doi: 10.1101/sqb.1988.053.01.013. [DOI] [PubMed] [Google Scholar]
  48. Rivera V. M., Sheng M., Greenberg M. E. The inner core of the serum response element mediates both the rapid induction and subsequent repression of c-fos transcription following serum stimulation. Genes Dev. 1990 Feb;4(2):255–268. doi: 10.1101/gad.4.2.255. [DOI] [PubMed] [Google Scholar]
  49. Rosati M., Marino M., Franzè A., Tramontano A., Grimaldi G. Members of the zinc finger protein gene family sharing a conserved N-terminal module. Nucleic Acids Res. 1991 Oct 25;19(20):5661–5667. doi: 10.1093/nar/19.20.5661. [DOI] [PMC free article] [PubMed] [Google Scholar]
  50. Ryan W. A., Jr, Franza B. R., Jr, Gilman M. Z. Two distinct cellular phosphoproteins bind to the c-fos serum response element. EMBO J. 1989 Jun;8(6):1785–1792. doi: 10.1002/j.1460-2075.1989.tb03572.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  51. Sassone-Corsi P., Sisson J. C., Verma I. M. Transcriptional autoregulation of the proto-oncogene fos. Nature. 1988 Jul 28;334(6180):314–319. doi: 10.1038/334314a0. [DOI] [PubMed] [Google Scholar]
  52. Schuh R., Aicher W., Gaul U., Côté S., Preiss A., Maier D., Seifert E., Nauber U., Schröder C., Kemler R. A conserved family of nuclear proteins containing structural elements of the finger protein encoded by Krüppel, a Drosophila segmentation gene. Cell. 1986 Dec 26;47(6):1025–1032. doi: 10.1016/0092-8674(86)90817-2. [DOI] [PubMed] [Google Scholar]
  53. Shaw P. E., Frasch S., Nordheim A. Repression of c-fos transcription is mediated through p67SRF bound to the SRE. EMBO J. 1989 Sep;8(9):2567–2574. doi: 10.1002/j.1460-2075.1989.tb08395.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  54. Shaw P. E., Schröter H., Nordheim A. The ability of a ternary complex to form over the serum response element correlates with serum inducibility of the human c-fos promoter. Cell. 1989 Feb 24;56(4):563–572. doi: 10.1016/0092-8674(89)90579-5. [DOI] [PubMed] [Google Scholar]
  55. Sheng M., Dougan S. T., McFadden G., Greenberg M. E. Calcium and growth factor pathways of c-fos transcriptional activation require distinct upstream regulatory sequences. Mol Cell Biol. 1988 Jul;8(7):2787–2796. doi: 10.1128/mcb.8.7.2787. [DOI] [PMC free article] [PubMed] [Google Scholar]
  56. Shi Y., Seto E., Chang L. S., Shenk T. Transcriptional repression by YY1, a human GLI-Krüppel-related protein, and relief of repression by adenovirus E1A protein. Cell. 1991 Oct 18;67(2):377–388. doi: 10.1016/0092-8674(91)90189-6. [DOI] [PubMed] [Google Scholar]
  57. Siegfried Z., Ziff E. B. Transcription activation by serum, PDGF, and TPA through the c-fos DSE: cell type specific requirements for induction. Oncogene. 1989 Jan;4(1):3–11. [PubMed] [Google Scholar]
  58. Singh H., LeBowitz J. H., Baldwin A. S., Jr, Sharp P. A. Molecular cloning of an enhancer binding protein: isolation by screening of an expression library with a recognition site DNA. Cell. 1988 Feb 12;52(3):415–423. doi: 10.1016/s0092-8674(88)80034-5. [DOI] [PubMed] [Google Scholar]
  59. Smith D. B., Johnson K. S. Single-step purification of polypeptides expressed in Escherichia coli as fusions with glutathione S-transferase. Gene. 1988 Jul 15;67(1):31–40. doi: 10.1016/0378-1119(88)90005-4. [DOI] [PubMed] [Google Scholar]
  60. Staudt L. M., Clerc R. G., Singh H., LeBowitz J. H., Sharp P. A., Baltimore D. Cloning of a lymphoid-specific cDNA encoding a protein binding the regulatory octamer DNA motif. Science. 1988 Jul 29;241(4865):577–580. doi: 10.1126/science.3399892. [DOI] [PubMed] [Google Scholar]
  61. Studier F. W., Rosenberg A. H., Dunn J. J., Dubendorff J. W. Use of T7 RNA polymerase to direct expression of cloned genes. Methods Enzymol. 1990;185:60–89. doi: 10.1016/0076-6879(90)85008-c. [DOI] [PubMed] [Google Scholar]
  62. Stumpo D. J., Stewart T. N., Gilman M. Z., Blackshear P. J. Identification of c-fos sequences involved in induction by insulin and phorbol esters. J Biol Chem. 1988 Feb 5;263(4):1611–1614. [PubMed] [Google Scholar]
  63. Sturm R. A., Das G., Herr W. The ubiquitous octamer-binding protein Oct-1 contains a POU domain with a homeo box subdomain. Genes Dev. 1988 Dec;2(12A):1582–1599. doi: 10.1101/gad.2.12a.1582. [DOI] [PubMed] [Google Scholar]
  64. Subramaniam M., Schmidt L. J., Crutchfield C. E., 3rd, Getz M. J. Negative regulation of serum-responsive enhancer elements. Nature. 1989 Jul 6;340(6228):64–66. doi: 10.1038/340064a0. [DOI] [PubMed] [Google Scholar]
  65. Sukhatme V. P., Cao X. M., Chang L. C., Tsai-Morris C. H., Stamenkovich D., Ferreira P. C., Cohen D. R., Edwards S. A., Shows T. B., Curran T. A zinc finger-encoding gene coregulated with c-fos during growth and differentiation, and after cellular depolarization. Cell. 1988 Apr 8;53(1):37–43. doi: 10.1016/0092-8674(88)90485-0. [DOI] [PubMed] [Google Scholar]
  66. Tanaka M., Herr W. Differential transcriptional activation by Oct-1 and Oct-2: interdependent activation domains induce Oct-2 phosphorylation. Cell. 1990 Feb 9;60(3):375–386. doi: 10.1016/0092-8674(90)90589-7. [DOI] [PubMed] [Google Scholar]
  67. Treisman J., Desplan C. The products of the Drosophila gap genes hunchback and Krüppel bind to the hunchback promoters. Nature. 1989 Sep 28;341(6240):335–337. doi: 10.1038/341335a0. [DOI] [PubMed] [Google Scholar]
  68. Treisman R. Identification of a protein-binding site that mediates transcriptional response of the c-fos gene to serum factors. Cell. 1986 Aug 15;46(4):567–574. doi: 10.1016/0092-8674(86)90882-2. [DOI] [PubMed] [Google Scholar]
  69. Treisman R. The SRE: a growth factor responsive transcriptional regulator. Semin Cancer Biol. 1990 Feb;1(1):47–58. [PubMed] [Google Scholar]
  70. Vinson C. R., LaMarco K. L., Johnson P. F., Landschulz W. H., McKnight S. L. In situ detection of sequence-specific DNA binding activity specified by a recombinant bacteriophage. Genes Dev. 1988 Jul;2(7):801–806. doi: 10.1101/gad.2.7.801. [DOI] [PubMed] [Google Scholar]
  71. Walsh K. Cross-binding of factors to functionally different promoter elements in c-fos and skeletal actin genes. Mol Cell Biol. 1989 May;9(5):2191–2201. doi: 10.1128/mcb.9.5.2191. [DOI] [PMC free article] [PubMed] [Google Scholar]
  72. Wilkinson D. G., Bhatt S., Chavrier P., Bravo R., Charnay P. Segment-specific expression of a zinc-finger gene in the developing nervous system of the mouse. Nature. 1989 Feb 2;337(6206):461–464. doi: 10.1038/337461a0. [DOI] [PubMed] [Google Scholar]
  73. Wilson T., Treisman R. Fos C-terminal mutations block down-regulation of c-fos transcription following serum stimulation. EMBO J. 1988 Dec 20;7(13):4193–4202. doi: 10.1002/j.1460-2075.1988.tb03316.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  74. Young R. A., Davis R. W. Efficient isolation of genes by using antibody probes. Proc Natl Acad Sci U S A. 1983 Mar;80(5):1194–1198. doi: 10.1073/pnas.80.5.1194. [DOI] [PMC free article] [PubMed] [Google Scholar]
  75. Zuo P., Stanojević D., Colgan J., Han K., Levine M., Manley J. L. Activation and repression of transcription by the gap proteins hunchback and Krüppel in cultured Drosophila cells. Genes Dev. 1991 Feb;5(2):254–264. doi: 10.1101/gad.5.2.254. [DOI] [PubMed] [Google Scholar]

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