1gav

From Proteopedia

(Difference between revisions)

Revision as of 09:34, 28 December 2022

BACTERIOPHAGE GA PROTEIN CAPSID

Structural highlights

1gav is a 45 chain structure with sequence from Enterobacteria phage GA. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CAPSD_BPGA Capsid protein self-assembles to form an icosahedral capsid with a T=3 symmetry, about 26 nm in diameter, and consisting of 89 capsid proteins dimers (178 capsid proteins). Involved in viral genome encapsidation through the interaction between a capsid protein dimer and the multiple packaging signals present in the RNA genome. The capsid contains also 1 copy of the A2 maturation protein.[UniProtKB:P03612] Acts as a translational repressor of viral replicase synthesis late in infection. This latter function is the result of capsid protein interaction with an RNA hairpin which contains the replicase ribosome-binding site.[UniProtKB:P03612]

Publication Abstract from PubMed

The three-dimensional structure of the small T=3 RNA bacteriophage GA has been determined at 3.4 A resolution. The structure was solved by molecular replacement, using the phage MS2 as an initial model. A comparison of the protein shells of the four related phages GA, MS2, fr and Qbeta was carried out in order to define structural features of particular importance for their assembly and specific RNA interaction. A high degree of similarity was found in the RNA binding sites, whereas larger structural differences are located in the loop regions of the coat proteins, especially in the FG loops forming 5-fold and quasi-6-fold contacts. The overall arrangement of the protein subunits in the shells of these phages is very similar, although the details of the interactions differ. The few conserved interactions are suggested to govern the subunit packing during assembly.

The crystal structure of bacteriophage GA and a comparison of bacteriophages belonging to the major groups of Escherichia coli leviviruses.,Tars K, Bundule M, Fridborg K, Liljas L J Mol Biol. 1997 Sep 5;271(5):759-73. PMID:9299325^[1]

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

References

↑ Tars K, Bundule M, Fridborg K, Liljas L. The crystal structure of bacteriophage GA and a comparison of bacteriophages belonging to the major groups of Escherichia coli leviviruses. J Mol Biol. 1997 Sep 5;271(5):759-73. PMID:9299325 doi:http://dx.doi.org/S0022-2836(97)91214-6

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1gav"

Categories: Enterobacteria phage GA | Large Structures | Bundule M | Liljas L | Tars K

@@ Line 3: / Line 3: @@
 <StructureSection load='1gav' size='340' side='right'caption='[[1gav]], [[Resolution|resolution]] 3.40&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1gav]] is a 45 chain structure with sequence from [https://en.wikipedia.org/wiki/Enterobacteria_phage_ga Enterobacteria phage ga]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GAV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GAV FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1gav]] is a 45 chain structure with sequence from [https://en.wikipedia.org/wiki/Enterobacteria_phage_GA Enterobacteria phage GA]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GAV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GAV FirstGlance]. <br>
 </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1gav FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gav OCA], [https://pdbe.org/1gav PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1gav RCSB], [https://www.ebi.ac.uk/pdbsum/1gav PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1gav ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/COAT_BPGA COAT_BPGA]] Forms the phage shell; binds to the phage RNA.
+[https://www.uniprot.org/uniprot/CAPSD_BPGA CAPSD_BPGA] Capsid protein self-assembles to form an icosahedral capsid with a T=3 symmetry, about 26 nm in diameter, and consisting of 89 capsid proteins dimers (178 capsid proteins). Involved in viral genome encapsidation through the interaction between a capsid protein dimer and the multiple packaging signals present in the RNA genome. The capsid contains also 1 copy of the A2 maturation protein.[UniProtKB:P03612]  Acts as a translational repressor of viral replicase synthesis late in infection. This latter function is the result of capsid protein interaction with an RNA hairpin which contains the replicase ribosome-binding site.[UniProtKB:P03612]
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 21: / Line 21: @@
 __TOC__
 </StructureSection>
-[[Category: Enterobacteria phage ga]]
+[[Category: Enterobacteria phage GA]]
 [[Category: Large Structures]]
-[[Category: Bundule, M]]
+[[Category: Bundule M]]
-[[Category: Liljas, L]]
+[[Category: Liljas L]]
-[[Category: Tars, K]]
+[[Category: Tars K]]
-[[Category: Bacteriophage]]
-[[Category: Capsid]]
-[[Category: Coat protein]]
-[[Category: Icosahedral virus]]
-[[Category: Virus]]

1gav

From Proteopedia

Revision as of 09:34, 28 December 2022

BACTERIOPHAGE GA PROTEIN CAPSID

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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