4kzy

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{{Large structure}}
 
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{{STRUCTURE_4kzy| PDB=4kzy | SCENE= }}
 
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===Rabbit 40S ribosomal subunit in complex with eIF1 and eIF1A.===
 
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==Function==
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==Rabbit 40S ribosomal subunit in complex with eIF1 and eIF1A.==
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[[http://www.uniprot.org/uniprot/G1TN72_RABIT G1TN72_RABIT]] May play a role during erythropoiesis through regulation of transcription factor DDIT3 (By similarity).[HAMAP-Rule:MF_03122] [[http://www.uniprot.org/uniprot/EIF1_HUMAN EIF1_HUMAN]] Necessary for scanning and involved in initiation site selection. Promotes the assembly of 48S ribosomal complexes at the authentic initiation codon of a conventional capped mRNA. [[http://www.uniprot.org/uniprot/IF1AX_HUMAN IF1AX_HUMAN]] Seems to be required for maximal rate of protein biosynthesis. Enhances ribosome dissociation into subunits and stabilizes the binding of the initiator Met-tRNA(I) to 40 S ribosomal subunits.
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<StructureSection load='4kzy' size='340' side='right'caption='[[4kzy]], [[Resolution|resolution]] 7.01&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[4kzy]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4KZY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4KZY FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 7.01&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4kzy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4kzy OCA], [https://pdbe.org/4kzy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4kzy RCSB], [https://www.ebi.ac.uk/pdbsum/4kzy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4kzy ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/G1TGI6_RABIT G1TGI6_RABIT] Required for the assembly and/or stability of the 40S ribosomal subunit. Required for the processing of the 20S rRNA-precursor to mature 18S rRNA in a late step of the maturation of 40S ribosomal subunits. Also functions as a cell surface receptor for laminin. Plays a role in cell adhesion to the basement membrane and in the consequent activation of signaling transduction pathways. May play a role in cell fate determination and tissue morphogenesis. Also acts as a receptor for several other ligands, including the pathogenic prion protein, viruses, and bacteria. Acts as a PPP1R16B-dependent substrate of PPP1CA.[HAMAP-Rule:MF_03016]
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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During translation initiation in eukaryotes, the small ribosomal subunit binds messenger RNA at the 5' end and scans in the 5' to 3' direction to locate the initiation codon, form the 80S initiation complex and start protein synthesis. This simple, yet intricate, process is guided by multiple initiation factors. Here we determine the structures of three complexes of the small ribosomal subunit that represent distinct steps in mammalian translation initiation. These structures reveal the locations of eIF1, eIF1A, mRNA and initiator transfer RNA bound to the small ribosomal subunit and provide insights into the details of translation initiation specific to eukaryotes. Conformational changes associated with the captured functional states reveal the dynamics of the interactions in the P site of the ribosome. These results have functional implications for the mechanism of mRNA scanning.
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==About this Structure==
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The initiation of mammalian protein synthesis and mRNA scanning mechanism.,Lomakin IB, Steitz TA Nature. 2013 Jul 21. doi: 10.1038/nature12355. PMID:23873042<ref>PMID:23873042</ref>
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[[4kzy]] is a 36 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4KZY OCA].
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[[Category: Homo sapiens]]
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 4kzy" style="background-color:#fffaf0;"></div>
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==See Also==
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*[[Eukaryotic initiation factor 3D structures|Eukaryotic initiation factor 3D structures]]
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*[[Ribosome 3D structures|Ribosome 3D structures]]
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*[[3D sructureseceptor for activated protein kinase C 1|3D sructureseceptor for activated protein kinase C 1]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Oryctolagus cuniculus]]
[[Category: Oryctolagus cuniculus]]
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[[Category: Lomakin, I B.]]
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[[Category: Lomakin IB]]
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[[Category: Steitz, T A.]]
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[[Category: Steitz TA]]
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[[Category: 40]]
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[[Category: Ribosome]]
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[[Category: Translation initiation]]
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Current revision

Rabbit 40S ribosomal subunit in complex with eIF1 and eIF1A.

PDB ID 4kzy

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