eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B. Triticum aestivum (taxid: 4565)
eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B.
eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B.
eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B.
eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B.
eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B.
eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B.
eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B.
eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B.
eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This preinitiation complex mediates ribosomal recognition of a start codon during the scanning process of the leader region.
Drosophila melanogaster (taxid: 7227)
Close Homologs in the Non-Redundant Database Detected by BLAST
This family includes the N terminus of eIF-5, and the C terminus of eIF-2 beta. This region corresponds to the whole of the archaebacterial eIF-2 beta homologue. The region contains a putative zinc binding C4 finger. Length = 125
The trusted cutoff is set high enough to select only archaeal members. The suggested cutoff is set to include most eukaryotic members but largely exclude the related eIF-5 [Protein synthesis, Translation factors]. Length = 133
>PF01873 eIF-5_eIF-2B: Domain found in IF2B/IF5; InterPro: IPR002735 The beta subunit of archaeal and eukaryotic translation initiation factor 2 (IF2beta) and the N-terminal domain of translation initiation factor 5 (IF5) show significant sequence homology []
Archaeal IF2beta contains two independent structural domains: an N-terminal mixed alpha/beta core domain (topological similarity to the common core of ribosomal proteins L23 and L15e), and a C-terminal domain consisting of a zinc-binding C4 finger []. Archaeal IF2beta is a ribosome-dependent GTPase that stimulates the binding of initiator Met-tRNA(i)(Met) to the ribosomes, even in the absence of other factors []. The C-terminal domain of eukaryotic IF5 is involved in the formation of the multi-factor complex (MFC), an important intermediate for the 43S pre-initiation complex assembly []. IF5 interacts directly with IF1, IF2beta and IF3c, which together with IF2-bound Met-tRNA(i)(Met) form the MFC. This entry represents both the N-terminal and zinc-binding domains of IF2, as well as a domain in IF5.; GO: 0003743 translation initiation factor activity, 0006413 translational initiation; PDB: 2DCU_B 2D74_B 2E9H_A 2G2K_A 1NEE_A 3CW2_L 2QMU_C 3V11_C 2NXU_A 2QN6_C ....
In Hpylori, hypA mutant abolished hydrogenase activity and decrease in urease activity. Nickel supplementation in media restored urease activity and partial hydrogenase activity. HypA probably involved in inserting Ni in enzymes.
Phenylacetate-CoA oxygenase is comprised of a five gene complex responsible for the hydroxylation of phenylacetate-CoA (PA-CoA) as the second catabolic step in phenylacetic acid (PA) degradation. Although the exact function of this enzyme has not been determined, it has been shown to be required for phenylacetic acid degradation and has been proposed to function in a multicomponent oxygenase acting on phenylacetate-CoA.
>PF01155 HypA: Hydrogenase expression/synthesis hypA family; InterPro: IPR000688 Bacterial membrane-bound nickel-dependent hydrogenases requires a number of accessory proteins which are involved in their maturation
The exact role of these proteins is not yet clear, but some seem to be required for the incorporation of the nickel ions []. One of these proteins is generally known as hypA. It is a protein of about 12 to 14 kDa that contains, in its C-terminal region, four conserved cysteines that form a zinc-finger like motif. Escherichia coli has two proteins that belong to this family, hypA and hybF. A homologue, MJ0214, has also been found in a number of archaeal species, including the genome of Methanocaldococcus jannaschii (Methanococcus jannaschii).; GO: 0016151 nickel ion binding, 0006464 protein modification process; PDB: 2KDX_A 3A44_D 3A43_B.
>cd00474 SUI1_eIF1 The SUI1/eIF1 (eukaryotic initiation factor 1) fold is found in eukaryotes, archaea, and some bacteria and is thought to play an important role in accurate initiator codon recognition during translation initiation
This fold, which includes two antiparallel alpha helices packed against the same side of a five-strand beta sheet, is structurally similar to other RNA-binding domains suggesting that SUI1/eIF1 may bind RNA. Point mutations in the yeast eIF1 implicate the protein in maintaining accurate start-site selection but its mechanism of action is unknown.
Alternate name: MOF2. A similar protein family (see TIGRFAMs model TIGR01158) is found in prokaryotes. The human proteins complements a yeast SUI1 mutatation.
Structure Of Archaeal Translation Factor Aif2beta F
8e-06
>pdb|2QMU|C Chain C, Structure Of An Archaeal Heterotrimeric Initiation Factor 2 Reveals A Nucleotide State Between The Gtp And The Gdp States Length = 138
>pdb|2NXU|A Chain A, Atomic Structure Of Translation Initiation Factor Aif2 Beta-Subunit From Archaebacteria Sulfolobus Solfataricus: High Resolution Nmr In Solution Length = 146
