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(-)Asym./Biol. Unit
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(-) Description

Authors :  J. Marcotrigiano, I. Lomakin, T. V. Pestova, C. U. T. Hellen, N. Sonenberg, S. K. Burley
Date :  03 Jan 01  (Deposition) - 21 Feb 01  (Release) - 24 Feb 09  (Revision)
Resolution :  2.37
Chains :  Asym./Biol. Unit :  A
Keywords :  Eif4G, Heat Repeat, Translation (Keyword Search: [Gene Ontology, PubMed, Web (Google))
Reference :  J. Marcotrigiano, I. B. Lomakin, N. Sonenberg, T. V. Pestova, C. U. Hellen, S. K. Burley
A Conserved Heat Domain Within Eif4G Directs Assembly Of The Translation Initiation Machinery.
Mol. Cell V. 7 193 2001
PubMed-ID: 11172724  |  Reference-DOI: 10.1016/S1097-2765(01)00167-8
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - EIF4GII
    Expression SystemESCHERICHIA COLI BL21(DE3)
    Expression System PlasmidPET28
    Expression System StrainBL21(DE3)
    Expression System Taxid469008
    Expression System VectorPLASMID
    FragmentRESIDUES 745-1003
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606

 Structural Features

(-) Chains, Units

Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 8)

Asymmetric/Biological Unit (1, 8)
No.NameCountTypeFull Name

(-) Sites  (0, 0)

(no "Site" information available for 1HU3)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1HU3)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1HU3)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1HU3)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1HU3)

(-) Exons   (6, 6)

Asymmetric/Biological Unit (6, 6)
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.30ENST0000026421130ENSE00001658251chr1:21191755-21191609147IF4G3_HUMAN819-867491A:819-850 (gaps)32

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:204
 aligned with IF4G3_HUMAN | O43432 from UniProtKB/Swiss-Prot  Length:1585

    Alignment length:243
                                   753       763       773       783       793       803       813       823       833       843       853       863       873       883       893       903       913       923       933       943       953       963       973       983   
               SCOP domains d1hu3a_ A: Eukaryotic initiation factor eIF4G                                                                                                                                                                                                       SCOP domains
               CATH domains 1hu3A00 A:1-986  [code=, no name defined]                                                                                                                                                                                                CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhh.....hhhhhhhhhh.....hhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhh.....---------hhhhhhhhhhhhhhhhhh.------------------------------...hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.28Exon 1.29  PDB: A:753-818 UniProt: 753-818                        Exon 1.30  PDB: A:819-850 (gaps) UniProt: 819-867Exon 1.31  PDB: A:881-946 UniProt: 868-946 [INCOMPLETE]                        Exon 1.32  PDB: A:947-981          1.33  Transcript 1
                            ||     753       763     | 773|      783       793       803       813        |-       833       843      |  -         -         -       883       893       903|     |913       923       933       943     | 953  |    963       973       983   
                            ||                     769-MSE|                                   812-MSE   822       832               850                            881                    904-MSE |                                    949-MSE  |             972-MSE          
                            1|                          774-MSE                                                                                                                                 910-MSE                                       956-MSE                          

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  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1HU3)

(-) Gene Ontology  (11, 11)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (IF4G3_HUMAN | O43432)
molecular function
    GO:0003723    RNA binding    Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
    GO:0000339    RNA cap binding    Interacting selectively and non-covalently with a 7-methylguanosine (m7G) group or derivative located at the 5' end of an RNA molecule.
    GO:0008135    translation factor activity, RNA binding    Functions during translation by interacting selectively and non-covalently with RNA during polypeptide synthesis at the ribosome.
    GO:0003743    translation initiation factor activity    Functions in the initiation of ribosome-mediated translation of mRNA into a polypeptide.
biological process
    GO:0006417    regulation of translation    Any process that modulates the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of proteins by the translation of mRNA or circRNA.
    GO:0006446    regulation of translational initiation    Any process that modulates the frequency, rate or extent of translational initiation.
    GO:0006412    translation    The cellular metabolic process in which a protein is formed, using the sequence of a mature mRNA or circRNA molecule to specify the sequence of amino acids in a polypeptide chain. Translation is mediated by the ribosome, and begins with the formation of a ternary complex between aminoacylated initiator methionine tRNA, GTP, and initiation factor 2, which subsequently associates with the small subunit of the ribosome and an mRNA or circRNA. Translation ends with the release of a polypeptide chain from the ribosome.
    GO:0006413    translational initiation    The process preceding formation of the peptide bond between the first two amino acids of a protein. This includes the formation of a complex of the ribosome, mRNA or circRNA, and an initiation complex that contains the first aminoacyl-tRNA.
    GO:0016032    viral process    A multi-organism process in which a virus is a participant. The other participant is the host. Includes infection of a host cell, replication of the viral genome, and assembly of progeny virus particles. In some cases the viral genetic material may integrate into the host genome and only subsequently, under particular circumstances, 'complete' its life cycle.
cellular component
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    GO:0016281    eukaryotic translation initiation factor 4F complex    The eukaryotic translation initiation factor 4F complex is composed of eIF4E, eIF4A and eIF4G; it is involved in the recognition of the mRNA cap, ATP-dependent unwinding of the 5'-terminal secondary structure and recruitment of the mRNA to the ribosome.


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