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1bj6

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[[Image:1bj6.gif|left|200px]]
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{{STRUCTURE_1bj6| PDB=1bj6 | SCENE= }}
{{STRUCTURE_1bj6| PDB=1bj6 | SCENE= }}
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'''1H NMR OF (12-53) NCP7/D(ACGCC) COMPLEX, 10 STRUCTURES'''
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===1H NMR OF (12-53) NCP7/D(ACGCC) COMPLEX, 10 STRUCTURES===
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==Overview==
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The nucleocapsid protein NCp7 of HIV-1 Mal contains two successive Zn knuckles of the CX2CX4HX4C type and plays a major role in virion morphogenesis, genomic RNA packaging and viral infectivity, mainly through single-stranded nucleic acid binding. We report here the study by 1H 2D NMR of the complex formed between the (12-53)NCp7, encompassing the two Zn knuckles, and d(ACGCC), a deoxynucleotide sequence analog corresponding to the shortest NCp7 binding site. Ten structures of the (12-53)NCp7/d(ACGCC) complex have been obtained from 607 NOE-derived distance constraints, 28 of which are intermolecular, and from molecular dynamics studies. The oligonucleotide is almost perpendicular to the sequence linking the two Zn knuckles. The Trp37 indole ring is inserted between the C2 and G3 bases and stacked on the latter. The complex is stabilized by hydrophobic interactions and hydrogen bonds, and accounts for the observed loss of virus infectivity induced by mutations in the Zn knuckle domain. Thus, the interaction between d(ACGCC) and the inactive mutant Cys23 (12-53)NCp7 was found by NMR to be completely different from that observed with the wild-type peptide. A mechanism of action for NCp7 in virus morphogenesis and replication is proposed from these results, which could facilitate the design of possible antiviral agents acting by a new mechanism.
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(as it appears on PubMed at http://www.pubmed.gov), where 9769215 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9769215}}
==About this Structure==
==About this Structure==
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1BJ6 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BJ6 OCA].
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1BJ6 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BJ6 OCA].
==Reference==
==Reference==
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[[Category: Virus morphogenesis]]
[[Category: Virus morphogenesis]]
[[Category: Zinc finger]]
[[Category: Zinc finger]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 11:35:09 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 19:14:59 2008''

Revision as of 16:15, 30 June 2008

Image:1bj6.png

Template:STRUCTURE 1bj6

1H NMR OF (12-53) NCP7/D(ACGCC) COMPLEX, 10 STRUCTURES

Template:ABSTRACT PUBMED 9769215

About this Structure

1BJ6 is a Single protein structure of sequence from Human immunodeficiency virus 1. Full experimental information is available from OCA.

Reference

Structure of the complex between the HIV-1 nucleocapsid protein NCp7 and the single-stranded pentanucleotide d(ACGCC)., Morellet N, Demene H, Teilleux V, Huynh-Dinh T, de Rocquigny H, Fournie-Zaluski MC, Roques BP, J Mol Biol. 1998 Oct 23;283(2):419-34. PMID:9769215

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