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. 1992 Oct;12(10):4724–4732. doi: 10.1128/mcb.12.10.4724

Activated lck tyrosine protein kinase stimulates antigen-independent interleukin-2 production in T cells.

K Luo 1, B M Sefton 1
PMCID: PMC360399  PMID: 1383689

Abstract

p56lck, a member of the src family of cytoplasmic tyrosine kinases, is expressed predominantly in T cells where it associates with the T-cell surface molecules CD4 and CD8. Mutants of CD4 and CD8 that have lost the ability to associate with p56lck no longer enhance antigen-induced T-cell activation. This suggests that p56lck plays an important role during T-cell activation. In an effort to understand the function of p56lck in T cells, a constitutively activated lck gene (F505lck) was introduced into T-helper hybridoma cell lines by retroviral infection. In four T-cell lines we examined, the activated lck protein stimulated interleukin-2 (IL-2) production, a hallmark of T-cell activation, in the absence of antigenic stimulation. In addition, a marked increase in antigen-independent IL-2 production was apparent when T cells infected with a temperature-sensitive F505lck were shifted to the permissive temperature. Only one cell line expressing F505lck exhibited increased sensitivity to antigenic stimulation. The SH3 domain of p56lck was dispensable for the induction of antigen-independent IL-2 production. In contrast, deletion of the majority of the SH2 domain of p56F505lck reduced its ability to induce spontaneous IL-2 production markedly. Activated p60c-src also induced antigen-independent IL-2 production, whereas two other tyrosine kinases, v-abl and the platelet-derived growth factor receptor, did not. Tyrosine phosphorylation of a 70-kDa cellular protein was observed after cross-linking of CD4 in T cells expressing F505lck but not in cells expressing F527src.

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Selected References

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  1. Abraham N., Miceli M. C., Parnes J. R., Veillette A. Enhancement of T-cell responsiveness by the lymphocyte-specific tyrosine protein kinase p56lck. Nature. 1991 Mar 7;350(6313):62–66. doi: 10.1038/350062a0. [DOI] [PubMed] [Google Scholar]
  2. Abraham N., Veillette A. Activation of p56lck through mutation of a regulatory carboxy-terminal tyrosine residue requires intact sites of autophosphorylation and myristylation. Mol Cell Biol. 1990 Oct;10(10):5197–5206. doi: 10.1128/mcb.10.10.5197. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Amrein K. E., Sefton B. M. Mutation of a site of tyrosine phosphorylation in the lymphocyte-specific tyrosine protein kinase, p56lck, reveals its oncogenic potential in fibroblasts. Proc Natl Acad Sci U S A. 1988 Jun;85(12):4247–4251. doi: 10.1073/pnas.85.12.4247. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Caron L., Abraham N., Pawson T., Veillette A. Structural requirements for enhancement of T-cell responsiveness by the lymphocyte-specific tyrosine protein kinase p56lck. Mol Cell Biol. 1992 Jun;12(6):2720–2729. doi: 10.1128/mcb.12.6.2720. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Casnellie J. E., Gentry L. E., Rohrschneider L. R., Krebs E. G. Identification of the tyrosine protein kinase from LSTRA cells by use of site-specific antibodies. Proc Natl Acad Sci U S A. 1984 Nov;81(21):6676–6680. doi: 10.1073/pnas.81.21.6676. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Casnellie J. E., Harrison M. L., Hellstrom K. E., Krebs E. G. A lymphoma protein with an in vitro site of tyrosine phosphorylation homologous to that in pp60src. J Biol Chem. 1982 Dec 10;257(23):13877–13879. [PubMed] [Google Scholar]
  7. Chan A. C., Irving B. A., Fraser J. D., Weiss A. The zeta chain is associated with a tyrosine kinase and upon T-cell antigen receptor stimulation associates with ZAP-70, a 70-kDa tyrosine phosphoprotein. Proc Natl Acad Sci U S A. 1991 Oct 15;88(20):9166–9170. doi: 10.1073/pnas.88.20.9166. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Cook W. D., Fazekas de St Groth B., Miller J. F., MacDonald H. R., Gabathuler R. Abelson virus transformation of an interleukin 2-dependent antigen-specific T-cell line. Mol Cell Biol. 1987 Jul;7(7):2631–2635. doi: 10.1128/mcb.7.7.2631. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Cook W. D., Metcalf D., Nicola N. A., Burgess A. W., Walker F. Malignant transformation of a growth factor-dependent myeloid cell line by Abelson virus without evidence of an autocrine mechanism. Cell. 1985 Jul;41(3):677–683. doi: 10.1016/s0092-8674(85)80048-9. [DOI] [PubMed] [Google Scholar]
  10. Doyle C., Strominger J. L. Interaction between CD4 and class II MHC molecules mediates cell adhesion. Nature. 1987 Nov 19;330(6145):256–259. doi: 10.1038/330256a0. [DOI] [PubMed] [Google Scholar]
  11. Escobedo J. A., Navankasattusas S., Kavanaugh W. M., Milfay D., Fried V. A., Williams L. T. cDNA cloning of a novel 85 kd protein that has SH2 domains and regulates binding of PI3-kinase to the PDGF beta-receptor. Cell. 1991 Apr 5;65(1):75–82. doi: 10.1016/0092-8674(91)90409-r. [DOI] [PubMed] [Google Scholar]
  12. Glaichenhaus N., Shastri N., Littman D. R., Turner J. M. Requirement for association of p56lck with CD4 in antigen-specific signal transduction in T cells. Cell. 1991 Feb 8;64(3):511–520. doi: 10.1016/0092-8674(91)90235-q. [DOI] [PubMed] [Google Scholar]
  13. Greenstein J. L., Kappler J., Marrack P., Burakoff S. J. The role of L3T4 in recognition of Ia by a cytotoxic, H-2Dd-specific T cell hybridoma. J Exp Med. 1984 Apr 1;159(4):1213–1224. doi: 10.1084/jem.159.4.1213. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Hatakeyama M., Kono T., Kobayashi N., Kawahara A., Levin S. D., Perlmutter R. M., Taniguchi T. Interaction of the IL-2 receptor with the src-family kinase p56lck: identification of novel intermolecular association. Science. 1991 Jun 14;252(5012):1523–1528. doi: 10.1126/science.2047859. [DOI] [PubMed] [Google Scholar]
  15. Hirai H., Varmus H. E. Site-directed mutagenesis of the SH2- and SH3-coding domains of c-src produces varied phenotypes, including oncogenic activation of p60c-src. Mol Cell Biol. 1990 Apr;10(4):1307–1318. doi: 10.1128/mcb.10.4.1307. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Hsi E. D., Siegel J. N., Minami Y., Luong E. T., Klausner R. D., Samelson L. E. T cell activation induces rapid tyrosine phosphorylation of a limited number of cellular substrates. J Biol Chem. 1989 Jun 25;264(18):10836–10842. [PubMed] [Google Scholar]
  17. Hurley T. R., Sefton B. M. Analysis of the activity and phosphorylation of the lck protein in lymphoid cells. Oncogene. 1989 Mar;4(3):265–272. [PubMed] [Google Scholar]
  18. June C. H., Fletcher M. C., Ledbetter J. A., Samelson L. E. Increases in tyrosine phosphorylation are detectable before phospholipase C activation after T cell receptor stimulation. J Immunol. 1990 Mar 1;144(5):1591–1599. [PubMed] [Google Scholar]
  19. June C. H., Fletcher M. C., Ledbetter J. A., Schieven G. L., Siegel J. N., Phillips A. F., Samelson L. E. Inhibition of tyrosine phosphorylation prevents T-cell receptor-mediated signal transduction. Proc Natl Acad Sci U S A. 1990 Oct;87(19):7722–7726. doi: 10.1073/pnas.87.19.7722. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Kamps M. P., Sefton B. M. Identification of multiple novel polypeptide substrates of the v-src, v-yes, v-fps, v-ros, and v-erb-B oncogenic tyrosine protein kinases utilizing antisera against phosphotyrosine. Oncogene. 1988 Apr;2(4):305–315. [PubMed] [Google Scholar]
  21. Kaplan P. L., Simon S., Cartwright C. A., Eckhart W. cDNA cloning with a retrovirus expression vector: generation of a pp60c-src cDNA clone. J Virol. 1987 May;61(5):1731–1734. doi: 10.1128/jvi.61.5.1731-1734.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Kato J. Y., Takeya T., Grandori C., Iba H., Levy J. B., Hanafusa H. Amino acid substitutions sufficient to convert the nontransforming p60c-src protein to a transforming protein. Mol Cell Biol. 1986 Dec;6(12):4155–4160. doi: 10.1128/mcb.6.12.4155. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Koga Y., Caccia N., Toyonaga B., Spolski R., Yanagi Y., Yoshikai Y., Mak T. W. A human T cell-specific cDNA clone (YT16) encodes a protein with extensive homology to a family of protein-tyrosine kinases. Eur J Immunol. 1986 Dec;16(12):1643–1646. doi: 10.1002/eji.1830161229. [DOI] [PubMed] [Google Scholar]
  24. Koretzky G. A., Picus J., Schultz T., Weiss A. Tyrosine phosphatase CD45 is required for T-cell antigen receptor and CD2-mediated activation of a protein tyrosine kinase and interleukin 2 production. Proc Natl Acad Sci U S A. 1991 Mar 15;88(6):2037–2041. doi: 10.1073/pnas.88.6.2037. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Koretzky G. A., Picus J., Thomas M. L., Weiss A. Tyrosine phosphatase CD45 is essential for coupling T-cell antigen receptor to the phosphatidyl inositol pathway. Nature. 1990 Jul 5;346(6279):66–68. doi: 10.1038/346066a0. [DOI] [PubMed] [Google Scholar]
  26. Luo K. X., Sefton B. M. Cross-linking of T-cell surface molecules CD4 and CD8 stimulates phosphorylation of the lck tyrosine protein kinase at the autophosphorylation site. Mol Cell Biol. 1990 Oct;10(10):5305–5313. doi: 10.1128/mcb.10.10.5305. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Marrack P., Endres R., Shimonkevitz R., Zlotnik A., Dialynas D., Fitch F., Kappler J. The major histocompatibility complex-restricted antigen receptor on T cells. II. Role of the L3T4 product. J Exp Med. 1983 Oct 1;158(4):1077–1091. doi: 10.1084/jem.158.4.1077. [DOI] [PMC free article] [PubMed] [Google Scholar]
  28. Marth J. D., Cooper J. A., King C. S., Ziegler S. F., Tinker D. A., Overell R. W., Krebs E. G., Perlmutter R. M. Neoplastic transformation induced by an activated lymphocyte-specific protein tyrosine kinase (pp56lck). Mol Cell Biol. 1988 Feb;8(2):540–550. doi: 10.1128/mcb.8.2.540. [DOI] [PMC free article] [PubMed] [Google Scholar]
  29. Marth J. D., Peet R., Krebs E. G., Perlmutter R. M. A lymphocyte-specific protein-tyrosine kinase gene is rearranged and overexpressed in the murine T cell lymphoma LSTRA. Cell. 1985 Dec;43(2 Pt 1):393–404. doi: 10.1016/0092-8674(85)90169-2. [DOI] [PubMed] [Google Scholar]
  30. Mathey-Prevot B., Nabel G., Palacios R., Baltimore D. Abelson virus abrogation of interleukin-3 dependence in a lymphoid cell line. Mol Cell Biol. 1986 Nov;6(11):4133–4135. doi: 10.1128/mcb.6.11.4133. [DOI] [PMC free article] [PubMed] [Google Scholar]
  31. Mayer B. J., Hamaguchi M., Hanafusa H. A novel viral oncogene with structural similarity to phospholipase C. Nature. 1988 Mar 17;332(6161):272–275. doi: 10.1038/332272a0. [DOI] [PubMed] [Google Scholar]
  32. Mayer B. J., Jackson P. K., Van Etten R. A., Baltimore D. Point mutations in the abl SH2 domain coordinately impair phosphotyrosine binding in vitro and transforming activity in vivo. Mol Cell Biol. 1992 Feb;12(2):609–618. doi: 10.1128/mcb.12.2.609. [DOI] [PMC free article] [PubMed] [Google Scholar]
  33. Miceli M. C., von Hoegen P., Parnes J. R. Adhesion versus coreceptor function of CD4 and CD8: role of the cytoplasmic tail in coreceptor activity. Proc Natl Acad Sci U S A. 1991 Apr 1;88(7):2623–2627. doi: 10.1073/pnas.88.7.2623. [DOI] [PMC free article] [PubMed] [Google Scholar]
  34. Molina T. J., Kishihara K., Siderovski D. P., van Ewijk W., Narendran A., Timms E., Wakeham A., Paige C. J., Hartmann K. U., Veillette A. Profound block in thymocyte development in mice lacking p56lck. Nature. 1992 May 14;357(6374):161–164. doi: 10.1038/357161a0. [DOI] [PubMed] [Google Scholar]
  35. Muller A. J., Young J. C., Pendergast A. M., Pondel M., Landau N. R., Littman D. R., Witte O. N. BCR first exon sequences specifically activate the BCR/ABL tyrosine kinase oncogene of Philadelphia chromosome-positive human leukemias. Mol Cell Biol. 1991 Apr;11(4):1785–1792. doi: 10.1128/mcb.11.4.1785. [DOI] [PMC free article] [PubMed] [Google Scholar]
  36. Mustelin T., Coggeshall K. M., Isakov N., Altman A. T cell antigen receptor-mediated activation of phospholipase C requires tyrosine phosphorylation. Science. 1990 Mar 30;247(4950):1584–1587. doi: 10.1126/science.2138816. [DOI] [PubMed] [Google Scholar]
  37. Nemeth S. P., Fox L. G., DeMarco M., Brugge J. S. Deletions within the amino-terminal half of the c-src gene product that alter the functional activity of the protein. Mol Cell Biol. 1989 Mar;9(3):1109–1119. doi: 10.1128/mcb.9.3.1109. [DOI] [PMC free article] [PubMed] [Google Scholar]
  38. Norment A. M., Salter R. D., Parham P., Engelhard V. H., Littman D. R. Cell-cell adhesion mediated by CD8 and MHC class I molecules. Nature. 1988 Nov 3;336(6194):79–81. doi: 10.1038/336079a0. [DOI] [PubMed] [Google Scholar]
  39. O'Shea J. J., Ashwell J. D., Bailey T. L., Cross S. L., Samelson L. E., Klausner R. D. Expression of v-src in a murine T-cell hybridoma results in constitutive T-cell receptor phosphorylation and interleukin 2 production. Proc Natl Acad Sci U S A. 1991 Mar 1;88(5):1741–1745. doi: 10.1073/pnas.88.5.1741. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Ostergaard H. L., Shackelford D. A., Hurley T. R., Johnson P., Hyman R., Sefton B. M., Trowbridge I. S. Expression of CD45 alters phosphorylation of the lck-encoded tyrosine protein kinase in murine lymphoma T-cell lines. Proc Natl Acad Sci U S A. 1989 Nov;86(22):8959–8963. doi: 10.1073/pnas.86.22.8959. [DOI] [PMC free article] [PubMed] [Google Scholar]
  41. Otsu M., Hiles I., Gout I., Fry M. J., Ruiz-Larrea F., Panayotou G., Thompson A., Dhand R., Hsuan J., Totty N. Characterization of two 85 kd proteins that associate with receptor tyrosine kinases, middle-T/pp60c-src complexes, and PI3-kinase. Cell. 1991 Apr 5;65(1):91–104. doi: 10.1016/0092-8674(91)90411-q. [DOI] [PubMed] [Google Scholar]
  42. Pawson T. Non-catalytic domains of cytoplasmic protein-tyrosine kinases: regulatory elements in signal transduction. Oncogene. 1988 Nov;3(5):491–495. [PubMed] [Google Scholar]
  43. Pierce J. H., Di Fiore P. P., Aaronson S. A., Potter M., Pumphrey J., Scott A., Ihle J. N. Neoplastic transformation of mast cells by Abelson-MuLV: abrogation of IL-3 dependence by a nonautocrine mechanism. Cell. 1985 Jul;41(3):685–693. doi: 10.1016/s0092-8674(85)80049-0. [DOI] [PubMed] [Google Scholar]
  44. Pingel J. T., Thomas M. L. Evidence that the leukocyte-common antigen is required for antigen-induced T lymphocyte proliferation. Cell. 1989 Sep 22;58(6):1055–1065. doi: 10.1016/0092-8674(89)90504-7. [DOI] [PMC free article] [PubMed] [Google Scholar]
  45. Potts W. M., Reynolds A. B., Lansing T. J., Parsons J. T. Activation of pp60c-src transforming potential by mutations altering the structure of an amino terminal domain containing residues 90-95. Oncogene Res. 1988;3(4):343–355. [PubMed] [Google Scholar]
  46. Ratnofsky S. E., Peterson A., Greenstein J. L., Burakoff S. J. Expression and function of CD8 in a murine T cell hybridoma. J Exp Med. 1987 Dec 1;166(6):1747–1757. doi: 10.1084/jem.166.6.1747. [DOI] [PMC free article] [PubMed] [Google Scholar]
  47. Rosenstein Y., Ratnofsky S., Burakoff S. J., Herrmann S. H. Direct evidence for binding of CD8 to HLA class I antigens. J Exp Med. 1989 Jan 1;169(1):149–160. doi: 10.1084/jem.169.1.149. [DOI] [PMC free article] [PubMed] [Google Scholar]
  48. Rudd C. E., Trevillyan J. M., Dasgupta J. D., Wong L. L., Schlossman S. F. The CD4 receptor is complexed in detergent lysates to a protein-tyrosine kinase (pp58) from human T lymphocytes. Proc Natl Acad Sci U S A. 1988 Jul;85(14):5190–5194. doi: 10.1073/pnas.85.14.5190. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. Saltzman E. M., White K., Casnellie J. E. Stimulation of the antigen and interleukin-2 receptors on T lymphocytes activates distinct tyrosine protein kinases. J Biol Chem. 1990 Jun 15;265(17):10138–10142. [PubMed] [Google Scholar]
  50. Samelson L. E., Germain R. N., Schwartz R. H. Monoclonal antibodies against the antigen receptor on a cloned T-cell hybrid. Proc Natl Acad Sci U S A. 1983 Nov;80(22):6972–6976. doi: 10.1073/pnas.80.22.6972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  51. Samelson L. E., Patel M. D., Weissman A. M., Harford J. B., Klausner R. D. Antigen activation of murine T cells induces tyrosine phosphorylation of a polypeptide associated with the T cell antigen receptor. Cell. 1986 Sep 26;46(7):1083–1090. doi: 10.1016/0092-8674(86)90708-7. [DOI] [PubMed] [Google Scholar]
  52. Seidel-Dugan C., Meyer B. E., Thomas S. M., Brugge J. S. Effects of SH2 and SH3 deletions on the functional activities of wild-type and transforming variants of c-Src. Mol Cell Biol. 1992 Apr;12(4):1835–1845. doi: 10.1128/mcb.12.4.1835. [DOI] [PMC free article] [PubMed] [Google Scholar]
  53. Shaw A. S., Amrein K. E., Hammond C., Stern D. F., Sefton B. M., Rose J. K. The lck tyrosine protein kinase interacts with the cytoplasmic tail of the CD4 glycoprotein through its unique amino-terminal domain. Cell. 1989 Nov 17;59(4):627–636. doi: 10.1016/0092-8674(89)90008-1. [DOI] [PubMed] [Google Scholar]
  54. Shaw A. S., Chalupny J., Whitney J. A., Hammond C., Amrein K. E., Kavathas P., Sefton B. M., Rose J. K. Short related sequences in the cytoplasmic domains of CD4 and CD8 mediate binding to the amino-terminal domain of the p56lck tyrosine protein kinase. Mol Cell Biol. 1990 May;10(5):1853–1862. doi: 10.1128/mcb.10.5.1853. [DOI] [PMC free article] [PubMed] [Google Scholar]
  55. Skolnik E. Y., Margolis B., Mohammadi M., Lowenstein E., Fischer R., Drepps A., Ullrich A., Schlessinger J. Cloning of PI3 kinase-associated p85 utilizing a novel method for expression/cloning of target proteins for receptor tyrosine kinases. Cell. 1991 Apr 5;65(1):83–90. doi: 10.1016/0092-8674(91)90410-z. [DOI] [PubMed] [Google Scholar]
  56. Sleckman B. P., Peterson A., Jones W. K., Foran J. A., Greenstein J. L., Seed B., Burakoff S. J. Expression and function of CD4 in a murine T-cell hybridoma. Nature. 1987 Jul 23;328(6128):351–353. doi: 10.1038/328351a0. [DOI] [PubMed] [Google Scholar]
  57. Stahl M. L., Ferenz C. R., Kelleher K. L., Kriz R. W., Knopf J. L. Sequence similarity of phospholipase C with the non-catalytic region of src. Nature. 1988 Mar 17;332(6161):269–272. doi: 10.1038/332269a0. [DOI] [PubMed] [Google Scholar]
  58. Suh P. G., Ryu S. H., Moon K. H., Suh H. W., Rhee S. G. Cloning and sequence of multiple forms of phospholipase C. Cell. 1988 Jul 15;54(2):161–169. doi: 10.1016/0092-8674(88)90548-x. [DOI] [PubMed] [Google Scholar]
  59. Suh P. G., Ryu S. H., Moon K. H., Suh H. W., Rhee S. G. Inositol phospholipid-specific phospholipase C: complete cDNA and protein sequences and sequence homology to tyrosine kinase-related oncogene products. Proc Natl Acad Sci U S A. 1988 Aug;85(15):5419–5423. doi: 10.1073/pnas.85.15.5419. [DOI] [PMC free article] [PubMed] [Google Scholar]
  60. Trahey M., Wong G., Halenbeck R., Rubinfeld B., Martin G. A., Ladner M., Long C. M., Crosier W. J., Watt K., Koths K. Molecular cloning of two types of GAP complementary DNA from human placenta. Science. 1988 Dec 23;242(4886):1697–1700. doi: 10.1126/science.3201259. [DOI] [PubMed] [Google Scholar]
  61. Trevillyan J. M., Lin Y., Chen S. J., Phillips C. A., Canna C., Linna T. J. Human T lymphocytes express a protein-tyrosine kinase homologous to p56LSTRA. Biochim Biophys Acta. 1986 Oct 10;888(3):286–295. doi: 10.1016/0167-4889(86)90228-4. [DOI] [PubMed] [Google Scholar]
  62. Turner J. M., Brodsky M. H., Irving B. A., Levin S. D., Perlmutter R. M., Littman D. R. Interaction of the unique N-terminal region of tyrosine kinase p56lck with cytoplasmic domains of CD4 and CD8 is mediated by cysteine motifs. Cell. 1990 Mar 9;60(5):755–765. doi: 10.1016/0092-8674(90)90090-2. [DOI] [PubMed] [Google Scholar]
  63. Veillette A., Bolen J. B., Bookman M. A. Alterations in tyrosine protein phosphorylation induced by antibody-mediated cross-linking of the CD4 receptor of T lymphocytes. Mol Cell Biol. 1989 Oct;9(10):4441–4446. doi: 10.1128/mcb.9.10.4441. [DOI] [PMC free article] [PubMed] [Google Scholar]
  64. Veillette A., Bookman M. A., Horak E. M., Bolen J. B. The CD4 and CD8 T cell surface antigens are associated with the internal membrane tyrosine-protein kinase p56lck. Cell. 1988 Oct 21;55(2):301–308. doi: 10.1016/0092-8674(88)90053-0. [DOI] [PubMed] [Google Scholar]
  65. Veillette A., Bookman M. A., Horak E. M., Samelson L. E., Bolen J. B. Signal transduction through the CD4 receptor involves the activation of the internal membrane tyrosine-protein kinase p56lck. Nature. 1989 Mar 16;338(6212):257–259. doi: 10.1038/338257a0. [DOI] [PubMed] [Google Scholar]
  66. Veillette A., Caron L., Fournel M., Pawson T. Regulation of the enzymatic function of the lymphocyte-specific tyrosine protein kinase p56lck by the non-catalytic SH2 and SH3 domains. Oncogene. 1992 May;7(5):971–980. [PubMed] [Google Scholar]
  67. Vogel U. S., Dixon R. A., Schaber M. D., Diehl R. E., Marshall M. S., Scolnick E. M., Sigal I. S., Gibbs J. B. Cloning of bovine GAP and its interaction with oncogenic ras p21. Nature. 1988 Sep 1;335(6185):90–93. doi: 10.1038/335090a0. [DOI] [PubMed] [Google Scholar]
  68. Voronova A. F., Buss J. E., Patschinsky T., Hunter T., Sefton B. M. Characterization of the protein apparently responsible for the elevated tyrosine protein kinase activity in LSTRA cells. Mol Cell Biol. 1984 Dec;4(12):2705–2713. doi: 10.1128/mcb.4.12.2705. [DOI] [PMC free article] [PubMed] [Google Scholar]
  69. Wang H. C., Parsons J. T. Deletions and insertions within an amino-terminal domain of pp60v-src inactivate transformation and modulate membrane stability. J Virol. 1989 Jan;63(1):291–302. doi: 10.1128/jvi.63.1.291-302.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
  70. Wasenius V. M., Saraste M., Salvén P., Erämaa M., Holm L., Lehto V. P. Primary structure of the brain alpha-spectrin. J Cell Biol. 1989 Jan;108(1):79–93. doi: 10.1083/jcb.108.1.79. [DOI] [PMC free article] [PubMed] [Google Scholar]
  71. Weaver C. T., Pingel J. T., Nelson J. O., Thomas M. L. CD8+ T-cell clones deficient in the expression of the CD45 protein tyrosine phosphatase have impaired responses to T-cell receptor stimuli. Mol Cell Biol. 1991 Sep;11(9):4415–4422. doi: 10.1128/mcb.11.9.4415. [DOI] [PMC free article] [PubMed] [Google Scholar]
  72. Weiss A., Koretzky G., Schatzman R. C., Kadlecek T. Functional activation of the T-cell antigen receptor induces tyrosine phosphorylation of phospholipase C-gamma 1. Proc Natl Acad Sci U S A. 1991 Jul 1;88(13):5484–5488. doi: 10.1073/pnas.88.13.5484. [DOI] [PMC free article] [PubMed] [Google Scholar]
  73. Zamoyska R., Derham P., Gorman S. D., von Hoegen P., Bolen J. B., Veillette A., Parnes J. R. Inability of CD8 alpha' polypeptides to associate with p56lck correlates with impaired function in vitro and lack of expression in vivo. Nature. 1989 Nov 16;342(6247):278–281. doi: 10.1038/342278a0. [DOI] [PubMed] [Google Scholar]

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