Abstract:
:ACTIBIND and its human homologue RNASET2 are T2 ribonucleases (RNases). RNases are ubiquitous and efficient enzymes that hydrolyze RNA to 3' mononucleotides and also possess antitumorigenic and antiangiogenic activities. Previously, we have shown that ACTIBIND and RNASET2 bind actin and interfere with the cytoskeletal network structure, thereby inhibiting cell motility and invasiveness in cancer and in endothelial cells. We also showed that ACTIBIND binds actin in a molar ratio of 1:2. Here, we further characterize ACTIBIND and determine its crystal structure at 1.8 Å resolution, which enables us to propose two structural elements that create binding sites to actin. We suggest that each of these binding sites is composed of one cysteine residue and one conserved amino acid region. These binding sites possibly interfere with the cytoskeleton network structure and as such may be responsible for the antitumorigenic and antiangiogenic activities of ACTIBIND and its human analogue RNASET2.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
de Leeuw M,González A,Lanir A,Roiz L,Smirnoff P,Schwartz B,Shoseyov O,Almog Odoi
10.1021/jm1015507subject
Has Abstractpub_date
2012-02-09 00:00:00pages
1013-20issue
3eissn
0022-2623issn
1520-4804journal_volume
55pub_type
杂志文章abstract::In our continuing study of triterpene derivatives as potent anti-HIV agents, different C-3 conformationally restricted betulinic acid (BA, 1) derivatives were designed and synthesized in order to explore the conformational space of the C-3 pharmacophore. 3-O-Monomethylsuccinyl-betulinic acid (MSB) analogues were also ...
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pub_type: 杂志文章
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更新日期:2009-10-08 00:00:00
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journal_title:Journal of medicinal chemistry
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pub_type: 杂志文章
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