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| - | [[Image:1tul.gif|left|200px]] | + | {{Seed}} |
| | + | [[Image:1tul.png|left|200px]] |
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| | {{STRUCTURE_1tul| PDB=1tul | SCENE= }} | | {{STRUCTURE_1tul| PDB=1tul | SCENE= }} |
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| - | '''STRUCTURE OF TLP20'''
| + | ===STRUCTURE OF TLP20=== |
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| - | ==Overview==
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| - | Myosin light-chain kinase is responsible for the phosphorylation of myosin in smooth muscle cells. In some tissue types, the C-terminal portion of this large enzyme is expressed as an independent protein and has been given the name telokin. Recently, an antibody directed against telokin was found to interact with a protein derived from the baculovirus Autographa californica nuclear polyhedrosis virus. This protein was biochemically characterized and given the name TLP20 for telokin-like protein of 20 000 molecular weight. The amino-acid sequence of TLP20 was determined on the basis of a cDNA clone and subsequent alignment searches failed to reveal any homology to telokin or to other known proteins. The three-dimensional structure of a proteolytic portion of TLP20 is reported here. Crystals employed in the investigation were grown from ammonium sulfate solutions at pH 6.0 and belonged to the space group P2(1)3 with unit-cell dimensions of a = b = c = 76.3 A and one molecule per asymmetric unit. The structure was determined by multiple isomorphous replacement with three heavy-atom derivatives. Least-squares refinement of the model reduced the crystallographic R factor to 18.1% for all measured X-ray data from 30.0 to 2.2 A. The overall fold of the molecule may be described as a seven-stranded antiparallel beta-barrel flanked on the bottom by two additional beta-strands and on the top by an alpha-helix. Quite surprisingly, the three-dimensional structure of this beta-barrel is not similar to telokin or to any other known protein.
| + | The line below this paragraph, {{ABSTRACT_PUBMED_15299576}}, adds the Publication Abstract to the page |
| | + | (as it appears on PubMed at http://www.pubmed.gov), where 15299576 is the PubMed ID number. |
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| | + | {{ABSTRACT_PUBMED_15299576}} |
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| | ==About this Structure== | | ==About this Structure== |
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| | [[Category: Rayment, I.]] | | [[Category: Rayment, I.]] |
| | [[Category: Telokin-like protein]] | | [[Category: Telokin-like protein]] |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 10:23:09 2008'' | + | |
| | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 14:22:26 2008'' |
Revision as of 11:22, 27 July 2008
Template:STRUCTURE 1tul
STRUCTURE OF TLP20
Template:ABSTRACT PUBMED 15299576
About this Structure
1TUL is a Single protein structure of sequence from Autographa californica nucleopolyhedrovirus. Full crystallographic information is available from OCA.
Reference
Molecular structure of a proteolytic fragment of TLP20., Holden HM, Wesenberg G, Raynes DA, Hartshorne DJ, Guerriero V Jr, Rayment I, Acta Crystallogr D Biol Crystallogr. 1996 Nov 1;52(Pt 6):1153-60. PMID:15299576
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