Structural highlights
Function
[IF2P_AERPE] Function in general translation initiation by promoting the binding of the formylmethionine-tRNA to ribosomes. Seems to function along with eIF-2 (By similarity).
Publication Abstract from PubMed
Initiation factor 5B (IF5B) is a universally conserved translational GTPase that catalyzes ribosomal subunit joining. In eukaryotes, IF5B directly interacts via a groove in its domain IV with initiation factor 1A (IF1A), another universally conserved initiation factor, to accomplish efficient subunit joining. Here, we have determined the first structure of a crenarchaeal IF5B, which revealed that the archaea-specific region of IF5B (helix alpha15) binds and occludes the groove of domain IV. Therefore, archaeal IF5B cannot access IF1A in the same manner as eukaryotic IF5B. This fact suggests that different relationships between IF5B and IF1A exist in archaea and eukaryotes. Proteins 2016; 84:712-717. (c) 2016 Wiley Periodicals, Inc.
Crystal structure of translation initiation factor 5B from the crenarchaeon Aeropyrum pernix.,Murakami R, Miyoshi T, Uchiumi T, Ito K Proteins. 2016 May;84(5):712-7. doi: 10.1002/prot.25009. Epub 2016 Mar 6. PMID:26868175[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Murakami R, Miyoshi T, Uchiumi T, Ito K. Crystal structure of translation initiation factor 5B from the crenarchaeon Aeropyrum pernix. Proteins. 2016 May;84(5):712-7. doi: 10.1002/prot.25009. Epub 2016 Mar 6. PMID:26868175 doi:http://dx.doi.org/10.1002/prot.25009
