3kxs

From Proteopedia

(Difference between revisions)

Revision as of 06:33, 2 January 2019

Crystal structure of HBV capsid mutant dimer (oxy form), strain adyw

Structural highlights

3kxs is a 6 chain structure with sequence from Hbv-d. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2g33, 2g34
Gene:	C (HBV-D)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CAPSD_HBVD1] Self assembles to form an icosahedral capsid. Most capsid appear to be large particles with a icosahedral symmetry of T=4 and consist of 240 copies of capsid protein, though a fraction forms smaller T=3 particles consisting of 180 capsid proteins. Entering capsid are transported along microtubules to the nucleus. Phosphorylation of the capsid is thought to induce exposure of nuclear localization signal in the C-terminal portion of the capsid protein that allows binding to the nuclear pore complex via the importin (karyopherin-) alpha and beta. Capsids are imported in intact form through the nuclear pore into the nuclear basket, where it probably binds NUP153. Only capsids that contain the mature viral genome can release the viral DNA and capsid protein into the nucleoplasm. Immature capsids get stucked in the basket. Capsids encapsulate the pre-genomic RNA and the P protein. Pre-genomic RNA is reverse transcribed into DNA while the capsid is still in the cytoplasm. The capsid can then either be directed to the nucleus, providing more genome for transcription, or bud through the endoplasmic reticulum to provide new virions (By similarity).^[1] Encapsidates hepatitis delta genome (By similarity).^[2]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

In infected cells, virus components must be organized at the right place and time to ensure assembly of infectious virions. From a different perspective, assembly must be prevented until all components are available. Hypothetically, this can be achieved by allosterically controlling assembly. Consistent with this hypothesis, here we show that the structure of the hepatitis B virus (HBV) core protein dimer, which can spontaneously self-assemble, is incompatible with capsid assembly. Systematic differences between core protein dimer and capsid conformations demonstrate linkage between the intradimer interface and interdimer contact surface. These structures also provide explanations for the capsid-dimer selectivity of some antibodies and the activities of assembly effectors. Solution studies suggest that the assembly-inactive state is more accurately an ensemble of conformations. Simulations show that allostery supports controlled assembly and results in capsids that are resistant to dissociation. We propose that allostery, as demonstrated in HBV, is common to most self-assembling viruses.

Conformational changes in the hepatitis B virus core protein are consistent with a role for allostery in virus assembly.,Packianathan C, Katen SP, Dann CE 3rd, Zlotnick A J Virol. 2010 Feb;84(3):1607-15. Epub 2009 Nov 25. PMID:19939922^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Wingfield PT, Stahl SJ, Williams RW, Steven AC. Hepatitis core antigen produced in Escherichia coli: subunit composition, conformational analysis, and in vitro capsid assembly. Biochemistry. 1995 Apr 18;34(15):4919-32. PMID:7711014
↑ Wingfield PT, Stahl SJ, Williams RW, Steven AC. Hepatitis core antigen produced in Escherichia coli: subunit composition, conformational analysis, and in vitro capsid assembly. Biochemistry. 1995 Apr 18;34(15):4919-32. PMID:7711014
↑ Packianathan C, Katen SP, Dann CE 3rd, Zlotnick A. Conformational changes in the hepatitis B virus core protein are consistent with a role for allostery in virus assembly. J Virol. 2010 Feb;84(3):1607-15. Epub 2009 Nov 25. PMID:19939922 doi:10.1128/JVI.02033-09

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3kxs"

@@ Line 1: / Line 1: @@
 ==Crystal structure of HBV capsid mutant dimer (oxy form), strain adyw==
 <StructureSection load='3kxs' size='340' side='right' caption='[[3kxs]], [[Resolution|resolution]] 2.25&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2g33|2g33]], [[2g34|2g34]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10419 HBV-D])</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3kxs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kxs OCA], [http://pdbe.org/3kxs PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3kxs RCSB], [http://www.ebi.ac.uk/pdbsum/3kxs PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3kxs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kxs OCA], [http://pdbe.org/3kxs PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3kxs RCSB], [http://www.ebi.ac.uk/pdbsum/3kxs PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3kxs ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kx/3kxs_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kx/3kxs_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

3kxs

From Proteopedia

Revision as of 06:33, 2 January 2019

Crystal structure of HBV capsid mutant dimer (oxy form), strain adyw

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox