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. 1994 Dec;14(12):7758–7769. doi: 10.1128/mcb.14.12.7758

Interaction between a novel F9-specific factor and octamer-binding proteins is required for cell-type-restricted activity of the fibroblast growth factor 4 enhancer.

L Dailey 1, H Yuan 1, C Basilico 1
PMCID: PMC359316  PMID: 7969117

Abstract

Understanding how diverse transcription patterns are achieved through common factor binding elements is a fundamental question that underlies much of developmental and cellular biology. One example is provided by the fibroblast growth factor 4 (FGF-4) gene, whose expression is restricted to specific embryonic tissues during development and to undifferentiated embryonal carcinoma cells in tissue culture. Analysis of the cis- and trans-acting elements required for the activity of the previously identified FGF-4 enhancer in F9 embryonal carcinoma cells showed that enhancer function depends on sequences that bind Sp1 and ubiquitous as well as F9-specific octamer-binding proteins. However, sequences immediately upstream of the octamer motif, which conform to a binding site for the high-mobility group (HMG) domain factor family, were also critical to enhancer function. We have identified a novel F9-specific factor, Fx, which specifically recognizes this motif. Fx formed complexes with either Oct-1 or Oct-3 in a template-dependent manner. The ability of different enhancer variants to form the Oct-Fx complexes correlated with enhancer activity, indicating that these complexes play an essential role in transcriptional activation of the FGF-4 gene. Thus, while FGF-4 enhancer function is octamer site dependent, its developmentally restricted activity is determined by the interaction of octamer-binding proteins with the tissue-specific factor Fx.

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Selected References

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

  1. Basilico C., Moscatelli D. The FGF family of growth factors and oncogenes. Adv Cancer Res. 1992;59:115–165. doi: 10.1016/s0065-230x(08)60305-x. [DOI] [PubMed] [Google Scholar]
  2. Carbon P., Murgo S., Ebel J. P., Krol A., Tebb G., Mattaj L. W. A common octamer motif binding protein is involved in the transcription of U6 snRNA by RNA polymerase III and U2 snRNA by RNA polymerase II. Cell. 1987 Oct 9;51(1):71–79. doi: 10.1016/0092-8674(87)90011-0. [DOI] [PubMed] [Google Scholar]
  3. Corcoran L. M., Karvelas M., Nossal G. J., Ye Z. S., Jacks T., Baltimore D. Oct-2, although not required for early B-cell development, is critical for later B-cell maturation and for postnatal survival. Genes Dev. 1993 Apr;7(4):570–582. doi: 10.1101/gad.7.4.570. [DOI] [PubMed] [Google Scholar]
  4. Curatola A. M., Basilico C. Expression of the K-fgf proto-oncogene is controlled by 3' regulatory elements which are specific for embryonal carcinoma cells. Mol Cell Biol. 1990 Jun;10(6):2475–2484. doi: 10.1128/mcb.10.6.2475. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Dailey L., Roberts S. B., Heintz N. Purification of the human histone H4 gene-specific transcription factors H4TF-1 and H4TF-2. Genes Dev. 1988 Dec;2(12B):1700–1712. doi: 10.1101/gad.2.12b.1700. [DOI] [PubMed] [Google Scholar]
  6. Davidson I., Fromental C., Augereau P., Wildeman A., Zenke M., Chambon P. Cell-type specific protein binding to the enhancer of simian virus 40 in nuclear extracts. Nature. 1986 Oct 9;323(6088):544–548. doi: 10.1038/323544a0. [DOI] [PubMed] [Google Scholar]
  7. Delli Bovi P., Curatola A. M., Kern F. G., Greco A., Ittmann M., Basilico C. An oncogene isolated by transfection of Kaposi's sarcoma DNA encodes a growth factor that is a member of the FGF family. Cell. 1987 Aug 28;50(5):729–737. doi: 10.1016/0092-8674(87)90331-x. [DOI] [PubMed] [Google Scholar]
  8. Denny P., Swift S., Connor F., Ashworth A. An SRY-related gene expressed during spermatogenesis in the mouse encodes a sequence-specific DNA-binding protein. EMBO J. 1992 Oct;11(10):3705–3712. doi: 10.1002/j.1460-2075.1992.tb05455.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Falkner F. G., Zachau H. G. Correct transcription of an immunoglobulin kappa gene requires an upstream fragment containing conserved sequence elements. Nature. 1984 Jul 5;310(5972):71–74. doi: 10.1038/310071a0. [DOI] [PubMed] [Google Scholar]
  10. Feldhaus A. L., Klug C. A., Arvin K. L., Singh H. Targeted disruption of the Oct-2 locus in a B cell provides genetic evidence for two distinct cell type-specific pathways of octamer element-mediated gene activation. EMBO J. 1993 Jul;12(7):2763–2772. doi: 10.1002/j.1460-2075.1993.tb05937.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Ferrari S., Harley V. R., Pontiggia A., Goodfellow P. N., Lovell-Badge R., Bianchi M. E. SRY, like HMG1, recognizes sharp angles in DNA. EMBO J. 1992 Dec;11(12):4497–4506. doi: 10.1002/j.1460-2075.1992.tb05551.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Gerster T., Roeder R. G. A herpesvirus trans-activating protein interacts with transcription factor OTF-1 and other cellular proteins. Proc Natl Acad Sci U S A. 1988 Sep;85(17):6347–6351. doi: 10.1073/pnas.85.17.6347. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Giese K., Amsterdam A., Grosschedl R. DNA-binding properties of the HMG domain of the lymphoid-specific transcriptional regulator LEF-1. Genes Dev. 1991 Dec;5(12B):2567–2578. doi: 10.1101/gad.5.12b.2567. [DOI] [PubMed] [Google Scholar]
  14. Giese K., Cox J., Grosschedl R. The HMG domain of lymphoid enhancer factor 1 bends DNA and facilitates assembly of functional nucleoprotein structures. Cell. 1992 Apr 3;69(1):185–195. doi: 10.1016/0092-8674(92)90129-z. [DOI] [PubMed] [Google Scholar]
  15. Goding C. R., O'Hare P. Herpes simplex virus Vmw65-octamer binding protein interaction: a paradigm for combinatorial control of transcription. Virology. 1989 Dec;173(2):363–367. doi: 10.1016/0042-6822(89)90548-5. [DOI] [PubMed] [Google Scholar]
  16. Goldfarb M. The fibroblast growth factor family. Cell Growth Differ. 1990 Sep;1(9):439–445. [PubMed] [Google Scholar]
  17. Gubbay J., Collignon J., Koopman P., Capel B., Economou A., Münsterberg A., Vivian N., Goodfellow P., Lovell-Badge R. A gene mapping to the sex-determining region of the mouse Y chromosome is a member of a novel family of embryonically expressed genes. Nature. 1990 Jul 19;346(6281):245–250. doi: 10.1038/346245a0. [DOI] [PubMed] [Google Scholar]
  18. Harley V. R., Jackson D. I., Hextall P. J., Hawkins J. R., Berkovitz G. D., Sockanathan S., Lovell-Badge R., Goodfellow P. N. DNA binding activity of recombinant SRY from normal males and XY females. Science. 1992 Jan 24;255(5043):453–456. doi: 10.1126/science.1734522. [DOI] [PubMed] [Google Scholar]
  19. Harvey R. P., Robins A. J., Wells J. R. Independently evolving chicken histone H2B genes: identification of a ubiquitous H2B-specific 5' element. Nucleic Acids Res. 1982 Dec 11;10(23):7851–7863. doi: 10.1093/nar/10.23.7851. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Herr W., Sturm R. A., Clerc R. G., Corcoran L. M., Baltimore D., Sharp P. A., Ingraham H. A., Rosenfeld M. G., Finney M., Ruvkun G. The POU domain: a large conserved region in the mammalian pit-1, oct-1, oct-2, and Caenorhabditis elegans unc-86 gene products. Genes Dev. 1988 Dec;2(12A):1513–1516. doi: 10.1101/gad.2.12a.1513. [DOI] [PubMed] [Google Scholar]
  21. Ingraham H. A., Flynn S. E., Voss J. W., Albert V. R., Kapiloff M. S., Wilson L., Rosenfeld M. G. The POU-specific domain of Pit-1 is essential for sequence-specific, high affinity DNA binding and DNA-dependent Pit-1-Pit-1 interactions. Cell. 1990 Jun 15;61(6):1021–1033. doi: 10.1016/0092-8674(90)90067-o. [DOI] [PubMed] [Google Scholar]
  22. Jackson S. P., Tjian R. Purification and analysis of RNA polymerase II transcription factors by using wheat germ agglutinin affinity chromatography. Proc Natl Acad Sci U S A. 1989 Mar;86(6):1781–1785. doi: 10.1073/pnas.86.6.1781. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Jantzen H. M., Admon A., Bell S. P., Tjian R. Nucleolar transcription factor hUBF contains a DNA-binding motif with homology to HMG proteins. Nature. 1990 Apr 26;344(6269):830–836. doi: 10.1038/344830a0. [DOI] [PubMed] [Google Scholar]
  24. Kingsley C., Winoto A. Cloning of GT box-binding proteins: a novel Sp1 multigene family regulating T-cell receptor gene expression. Mol Cell Biol. 1992 Oct;12(10):4251–4261. doi: 10.1128/mcb.12.10.4251. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Kristie T. M., LeBowitz J. H., Sharp P. A. The octamer-binding proteins form multi-protein--DNA complexes with the HSV alpha TIF regulatory protein. EMBO J. 1989 Dec 20;8(13):4229–4238. doi: 10.1002/j.1460-2075.1989.tb08608.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  26. Kristie T. M., Sharp P. A. Interactions of the Oct-1 POU subdomains with specific DNA sequences and with the HSV alpha-trans-activator protein. Genes Dev. 1990 Dec;4(12B):2383–2396. doi: 10.1101/gad.4.12b.2383. [DOI] [PubMed] [Google Scholar]
  27. LaBella F., Sive H. L., Roeder R. G., Heintz N. Cell-cycle regulation of a human histone H2b gene is mediated by the H2b subtype-specific consensus element. Genes Dev. 1988 Jan;2(1):32–39. doi: 10.1101/gad.2.1.32. [DOI] [PubMed] [Google Scholar]
  28. Landolfi N. F., Capra J. D., Tucker P. W. Interaction of cell-type-specific nuclear proteins with immunoglobulin VH promoter region sequences. Nature. 1986 Oct 9;323(6088):548–551. doi: 10.1038/323548a0. [DOI] [PubMed] [Google Scholar]
  29. LeBowitz J. H., Kobayashi T., Staudt L., Baltimore D., Sharp P. A. Octamer-binding proteins from B or HeLa cells stimulate transcription of the immunoglobulin heavy-chain promoter in vitro. Genes Dev. 1988 Oct;2(10):1227–1237. doi: 10.1101/gad.2.10.1227. [DOI] [PubMed] [Google Scholar]
  30. Lee D. K., Horikoshi M., Roeder R. G. Interaction of TFIID in the minor groove of the TATA element. Cell. 1991 Dec 20;67(6):1241–1250. doi: 10.1016/0092-8674(91)90300-n. [DOI] [PubMed] [Google Scholar]
  31. Lenardo M. J., Staudt L., Robbins P., Kuang A., Mulligan R. C., Baltimore D. Repression of the IgH enhancer in teratocarcinoma cells associated with a novel octamer factor. Science. 1989 Jan 27;243(4890):544–546. doi: 10.1126/science.2536195. [DOI] [PubMed] [Google Scholar]
  32. Lenardo M., Pierce J. W., Baltimore D. Protein-binding sites in Ig gene enhancers determine transcriptional activity and inducibility. Science. 1987 Jun 19;236(4808):1573–1577. doi: 10.1126/science.3109035. [DOI] [PubMed] [Google Scholar]
  33. Luo Y., Fujii H., Gerster T., Roeder R. G. A novel B cell-derived coactivator potentiates the activation of immunoglobulin promoters by octamer-binding transcription factors. Cell. 1992 Oct 16;71(2):231–241. doi: 10.1016/0092-8674(92)90352-d. [DOI] [PubMed] [Google Scholar]
  34. Ma Y. G., Rosfjord E., Huebert C., Wilder P., Tiesman J., Kelly D., Rizzino A. Transcriptional regulation of the murine k-FGF gene in embryonic cell lines. Dev Biol. 1992 Nov;154(1):45–54. doi: 10.1016/0012-1606(92)90046-j. [DOI] [PubMed] [Google Scholar]
  35. Mason J. O., Williams G. T., Neuberger M. S. Transcription cell type specificity is conferred by an immunoglobulin VH gene promoter that includes a functional consensus sequence. Cell. 1985 Jun;41(2):479–487. doi: 10.1016/s0092-8674(85)80021-0. [DOI] [PubMed] [Google Scholar]
  36. Mattaj I. W., Lienhard S., Jiricny J., De Robertis E. M. An enhancer-like sequence within the Xenopus U2 gene promoter facilitates the formation of stable transcription complexes. Nature. 1985 Jul 11;316(6024):163–167. doi: 10.1038/316163a0. [DOI] [PubMed] [Google Scholar]
  37. Maxam A. M., Gilbert W. Sequencing end-labeled DNA with base-specific chemical cleavages. Methods Enzymol. 1980;65(1):499–560. doi: 10.1016/s0076-6879(80)65059-9. [DOI] [PubMed] [Google Scholar]
  38. Meyer K. B., Neuberger M. S. The immunoglobulin kappa locus contains a second, stronger B-cell-specific enhancer which is located downstream of the constant region. EMBO J. 1989 Jul;8(7):1959–1964. doi: 10.1002/j.1460-2075.1989.tb03601.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  39. Mizushima-Sugano J., Roeder R. G. Cell-type-specific transcription of an immunoglobulin kappa light chain gene in vitro. Proc Natl Acad Sci U S A. 1986 Nov;83(22):8511–8515. doi: 10.1073/pnas.83.22.8511. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Murphy S., Pierani A., Scheidereit C., Melli M., Roeder R. G. Purified octamer binding transcription factors stimulate RNA polymerase III--mediated transcription of the 7SK RNA gene. Cell. 1989 Dec 22;59(6):1071–1080. doi: 10.1016/0092-8674(89)90763-0. [DOI] [PubMed] [Google Scholar]
  41. Murphy S., Yoon J. B., Gerster T., Roeder R. G. Oct-1 and Oct-2 potentiate functional interactions of a transcription factor with the proximal sequence element of small nuclear RNA genes. Mol Cell Biol. 1992 Jul;12(7):3247–3261. doi: 10.1128/mcb.12.7.3247. [DOI] [PMC free article] [PubMed] [Google Scholar]
  42. Müller M. M., Ruppert S., Schaffner W., Matthias P. A cloned octamer transcription factor stimulates transcription from lymphoid-specific promoters in non-B cells. Nature. 1988 Dec 8;336(6199):544–551. doi: 10.1038/336544a0. [DOI] [PubMed] [Google Scholar]
  43. Nasrin N., Buggs C., Kong X. F., Carnazza J., Goebl M., Alexander-Bridges M. DNA-binding properties of the product of the testis-determining gene and a related protein. Nature. 1991 Nov 28;354(6351):317–320. doi: 10.1038/354317a0. [DOI] [PubMed] [Google Scholar]
  44. Niswander L., Martin G. R. Fgf-4 expression during gastrulation, myogenesis, limb and tooth development in the mouse. Development. 1992 Mar;114(3):755–768. doi: 10.1242/dev.114.3.755. [DOI] [PubMed] [Google Scholar]
  45. O'Hare P., Goding C. R. Herpes simplex virus regulatory elements and the immunoglobulin octamer domain bind a common factor and are both targets for virion transactivation. Cell. 1988 Feb 12;52(3):435–445. doi: 10.1016/s0092-8674(88)80036-9. [DOI] [PubMed] [Google Scholar]
  46. Okamoto K., Okazawa H., Okuda A., Sakai M., Muramatsu M., Hamada H. A novel octamer binding transcription factor is differentially expressed in mouse embryonic cells. Cell. 1990 Feb 9;60(3):461–472. doi: 10.1016/0092-8674(90)90597-8. [DOI] [PubMed] [Google Scholar]
  47. Parslow T. G., Blair D. L., Murphy W. J., Granner D. K. Structure of the 5' ends of immunoglobulin genes: a novel conserved sequence. Proc Natl Acad Sci U S A. 1984 May;81(9):2650–2654. doi: 10.1073/pnas.81.9.2650. [DOI] [PMC free article] [PubMed] [Google Scholar]
  48. Pierani A., Heguy A., Fujii H., Roeder R. G. Activation of octamer-containing promoters by either octamer-binding transcription factor 1 (OTF-1) or OTF-2 and requirement of an additional B-cell-specific component for optimal transcription of immunoglobulin promoters. Mol Cell Biol. 1990 Dec;10(12):6204–6215. doi: 10.1128/mcb.10.12.6204. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. Rosenfeld M. G. POU-domain transcription factors: pou-er-ful developmental regulators. Genes Dev. 1991 Jun;5(6):897–907. doi: 10.1101/gad.5.6.897. [DOI] [PubMed] [Google Scholar]
  50. Rosner M. H., Vigano M. A., Ozato K., Timmons P. M., Poirier F., Rigby P. W., Staudt L. M. A POU-domain transcription factor in early stem cells and germ cells of the mammalian embryo. Nature. 1990 Jun 21;345(6277):686–692. doi: 10.1038/345686a0. [DOI] [PubMed] [Google Scholar]
  51. Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]
  52. Scheidereit C., Heguy A., Roeder R. G. Identification and purification of a human lymphoid-specific octamer-binding protein (OTF-2) that activates transcription of an immunoglobulin promoter in vitro. Cell. 1987 Dec 4;51(5):783–793. doi: 10.1016/0092-8674(87)90101-2. [DOI] [PubMed] [Google Scholar]
  53. Schoorlemmer J., Kruijer W. Octamer-dependent regulation of the kFGF gene in embryonal carcinoma and embryonic stem cells. Mech Dev. 1991 Dec;36(1-2):75–86. doi: 10.1016/0925-4773(91)90074-g. [DOI] [PubMed] [Google Scholar]
  54. Schöler H. R., Ciesiolka T., Gruss P. A nexus between Oct-4 and E1A: implications for gene regulation in embryonic stem cells. Cell. 1991 Jul 26;66(2):291–304. doi: 10.1016/0092-8674(91)90619-a. [DOI] [PubMed] [Google Scholar]
  55. Schöler H. R., Hatzopoulos A. K., Balling R., Suzuki N., Gruss P. A family of octamer-specific proteins present during mouse embryogenesis: evidence for germline-specific expression of an Oct factor. EMBO J. 1989 Sep;8(9):2543–2550. doi: 10.1002/j.1460-2075.1989.tb08392.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  56. Schöler H. R. Octamania: the POU factors in murine development. Trends Genet. 1991 Oct;7(10):323–329. doi: 10.1016/0168-9525(91)90422-m. [DOI] [PubMed] [Google Scholar]
  57. Segil N., Roberts S. B., Heintz N. Cell-cycle-regulated phosphorylation of the transcription factor Oct-1. Cold Spring Harb Symp Quant Biol. 1991;56:285–292. doi: 10.1101/sqb.1991.056.01.035. [DOI] [PubMed] [Google Scholar]
  58. Sinclair A. H., Berta P., Palmer M. S., Hawkins J. R., Griffiths B. L., Smith M. J., Foster J. W., Frischauf A. M., Lovell-Badge R., Goodfellow P. N. A gene from the human sex-determining region encodes a protein with homology to a conserved DNA-binding motif. Nature. 1990 Jul 19;346(6281):240–244. doi: 10.1038/346240a0. [DOI] [PubMed] [Google Scholar]
  59. Solomon M. J., Strauss F., Varshavsky A. A mammalian high mobility group protein recognizes any stretch of six A.T base pairs in duplex DNA. Proc Natl Acad Sci U S A. 1986 Mar;83(5):1276–1280. doi: 10.1073/pnas.83.5.1276. [DOI] [PMC free article] [PubMed] [Google Scholar]
  60. Starr D. B., Hawley D. K. TFIID binds in the minor groove of the TATA box. Cell. 1991 Dec 20;67(6):1231–1240. doi: 10.1016/0092-8674(91)90299-e. [DOI] [PubMed] [Google Scholar]
  61. Staudt L. M., Singh H., Sen R., Wirth T., Sharp P. A., Baltimore D. A lymphoid-specific protein binding to the octamer motif of immunoglobulin genes. Nature. 1986 Oct 16;323(6089):640–643. doi: 10.1038/323640a0. [DOI] [PubMed] [Google Scholar]
  62. Stern S., Tanaka M., Herr W. The Oct-1 homoeodomain directs formation of a multiprotein-DNA complex with the HSV transactivator VP16. Nature. 1989 Oct 19;341(6243):624–630. doi: 10.1038/341624a0. [DOI] [PubMed] [Google Scholar]
  63. Sturm R. A., Herr W. The POU domain is a bipartite DNA-binding structure. Nature. 1988 Dec 8;336(6199):601–604. doi: 10.1038/336601a0. [DOI] [PubMed] [Google Scholar]
  64. Sugimoto A., Iino Y., Maeda T., Watanabe Y., Yamamoto M. Schizosaccharomyces pombe ste11+ encodes a transcription factor with an HMG motif that is a critical regulator of sexual development. Genes Dev. 1991 Nov;5(11):1990–1999. doi: 10.1101/gad.5.11.1990. [DOI] [PubMed] [Google Scholar]
  65. Suzuki N., Rohdewohld H., Neuman T., Gruss P., Schöler H. R. Oct-6: a POU transcription factor expressed in embryonal stem cells and in the developing brain. EMBO J. 1990 Nov;9(11):3723–3732. doi: 10.1002/j.1460-2075.1990.tb07585.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  66. Taira M., Yoshida T., Miyagawa K., Sakamoto H., Terada M., Sugimura T. cDNA sequence of human transforming gene hst and identification of the coding sequence required for transforming activity. Proc Natl Acad Sci U S A. 1987 May;84(9):2980–2984. doi: 10.1073/pnas.84.9.2980. [DOI] [PMC free article] [PubMed] [Google Scholar]
  67. Travis A., Amsterdam A., Belanger C., Grosschedl R. LEF-1, a gene encoding a lymphoid-specific protein with an HMG domain, regulates T-cell receptor alpha enhancer function [corrected]. Genes Dev. 1991 May;5(5):880–894. doi: 10.1101/gad.5.5.880. [DOI] [PubMed] [Google Scholar]
  68. Ullman K. S., Flanagan W. M., Edwards C. A., Crabtree G. R. Activation of early gene expression in T lymphocytes by Oct-1 and an inducible protein, OAP40. Science. 1991 Oct 25;254(5031):558–562. doi: 10.1126/science.1683003. [DOI] [PubMed] [Google Scholar]
  69. Velcich A., Delli-Bovi P., Mansukhani A., Ziff E. B., Basilico C. Expression of the K-fgf protooncogene is repressed during differentiation of F9 cells. Oncogene Res. 1989;5(1):31–37. [PubMed] [Google Scholar]
  70. Verrijzer C. P., Kal A. J., van der Vliet P. C. The oct-1 homeo domain contacts only part of the octamer sequence and full oct-1 DNA-binding activity requires the POU-specific domain. Genes Dev. 1990 Nov;4(11):1964–1974. doi: 10.1101/gad.4.11.1964. [DOI] [PubMed] [Google Scholar]
  71. Waterman M. L., Jones K. A. Purification of TCF-1 alpha, a T-cell-specific transcription factor that activates the T-cell receptor C alpha gene enhancer in a context-dependent manner. New Biol. 1990 Jul;2(7):621–636. [PubMed] [Google Scholar]
  72. Yang C. C., Nash H. A. The interaction of E. coli IHF protein with its specific binding sites. Cell. 1989 Jun 2;57(5):869–880. doi: 10.1016/0092-8674(89)90801-5. [DOI] [PubMed] [Google Scholar]
  73. van de Wetering M., Clevers H. Sequence-specific interaction of the HMG box proteins TCF-1 and SRY occurs within the minor groove of a Watson-Crick double helix. EMBO J. 1992 Aug;11(8):3039–3044. doi: 10.1002/j.1460-2075.1992.tb05374.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  74. van de Wetering M., Oosterwegel M., Dooijes D., Clevers H. Identification and cloning of TCF-1, a T lymphocyte-specific transcription factor containing a sequence-specific HMG box. EMBO J. 1991 Jan;10(1):123–132. doi: 10.1002/j.1460-2075.1991.tb07928.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  75. van de Wetering M., Oosterwegel M., van Norren K., Clevers H. Sox-4, an Sry-like HMG box protein, is a transcriptional activator in lymphocytes. EMBO J. 1993 Oct;12(10):3847–3854. doi: 10.1002/j.1460-2075.1993.tb06063.x. [DOI] [PMC free article] [PubMed] [Google Scholar]

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