Publication Date:
1991-05-03
Description:
The molecular cloning of the complementary DNA coding for a 90-kilodalton fragment of tensin, an actin-binding component of focal contacts and other submembraneous cytoskeletal structures, is reported. The derived amino acid sequence revealed the presence of a Src homology 2 (SH2) domain. This domain is shared by a number of signal transduction proteins including nonreceptor tyrosine kinases such as Abl, Fps, Src, and Src family members, the transforming protein Crk, phospholipase C-gamma 1, PI-3 (phosphatidylinositol) kinase, and guanosine triphosphatase-activating protein (GAP). Like the SH2 domain found in Src, Crk, and Abl, the SH2 domain of tensin bound specifically to a number of phosphotyrosine-containing proteins from v-src-transformed cells. Tensin was also found to be phosphorylated on tyrosine residues. These findings suggest that by possessing both actin-binding and phosphotyrosine-binding activities and being itself a target for tyrosine kinases, tensin may link signal transduction pathways with the cytoskeleton.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, S -- Lu, M L -- Lo, S H -- Lin, S -- Butler, J A -- Druker, B J -- Roberts, T M -- An, Q -- Chen, L B -- GM 22289/GM/NIGMS NIH HHS/ -- GM 38318/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 May 3;252(5006):712-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cellular and Molecular Biology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1708917" target="_blank"〉PubMed〈/a〉
Keywords:
Actins/*metabolism
;
Amino Acid Sequence
;
Animals
;
Binding Sites
;
Chick Embryo
;
Cloning, Molecular
;
Cytoskeletal Proteins/*chemistry/genetics/metabolism
;
DNA/genetics
;
Fluorescent Antibody Technique
;
Immunoblotting
;
*Microfilament Proteins
;
Molecular Sequence Data
;
Peptide Fragments/genetics
;
Phosphotyrosine
;
Protein-Tyrosine Kinases/genetics
;
Sequence Homology, Nucleic Acid
;
Signal Transduction
;
Tyrosine/analogs & derivatives/metabolism
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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