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(-) Description

Title :  TRANSLATION INITIATION FACTOR 3 N-TERMINAL DOMAIN
 
Authors :  V. Biou, F. Shu, V. Ramakrishnan
Date :  16 Aug 95  (Deposition) - 07 Dec 95  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.80
Chains :  Asym./Biol. Unit :  A
Keywords :  If3 N-Terminal Domain, Ribosome Binding Factor (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  V. Biou, F. Shu, V. Ramakrishnan
X-Ray Crystallography Shows That Translational Initiation Factor If3 Consists Of Two Compact Alpha/Beta Domains Linked By An Alpha-Helix.
Embo J. V. 14 4056 1995
PubMed-ID: 7664745
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - TRANSLATION INITIATION FACTOR 3
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Gene: T7
    Expression System Plasmid: T7 VECTOR PET13A
    Expression System Taxid: 562
    Expression System Vector Type: T7
    Gene: T7
    Organism Scientific: GEOBACILLUS STEAROTHERMOPHILUS
    Organism Taxid: 1422
    Synonym: IF3-N

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 3)

Asymmetric/Biological Unit (2, 3)
No.NameCountTypeFull Name
1CL2Ligand/IonCHLORIDE ION
2PBM1Ligand/IonTRIMETHYL LEAD ION

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREILE A:6 , GLU A:36 , ASP A:61 , LYS A:64 , CL A:102BINDING SITE FOR RESIDUE PBM A 101
2AC2SOFTWAREARG A:12 , LEU A:47 , PBM A:101 , HOH A:211BINDING SITE FOR RESIDUE CL A 102
3AC3SOFTWAREARG A:40 , ASP A:44 , HOH A:281BINDING SITE FOR RESIDUE CL A 103

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1Lys A:53 -Pro A:54

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1IF3PS00938 Initiation factor 3 signature.IF3_GEOSE58-71  1A:58-71

(-) Exons   (0, 0)

(no "Exon" information available for 1TIF)

(-) 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:76
 aligned with IF3_GEOSE | P03000 from UniProtKB/Swiss-Prot  Length:172

    Alignment length:76
                                    12        22        32        42        52        62        72      
             IF3_GEOSE    3 KDFIINEQIRAREVRLIDQNGDQLGIKSKQEALEIAARRNLDLVLVAPNAKPPVCRIMDYGKFRFEQQKKEKEARK 78
               SCOP domains d1tifa_ A: Translation initiation factor IF3, N-terminal domain              SCOP domains
               CATH domains 1tifA00 A:3-78  [code=3.10.20.80, no name defined]                           CATH domains
               Pfam domains IF3_N-1tifA01 A:3-77                                                       - Pfam domains
         Sec.struct. author .....hhh....eeeee.....eeeeeehhhhhhhhhh...eeeeee......eeeee.hhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------IF3           ------- PROSITE
                 Transcript ---------------------------------------------------------------------------- Transcript
                  1tif A  3 KDFIINEQIRAREVRLIDQNGDQLGIKSKQEALEIAARRNLDLVLVAPNAKPPVCRIMDYGKFRFEQQKKEKEARK 78
                                    12        22        32        42        52        62        72
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  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
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: no clan defined [family: IF3_N] (1)

(-) Gene Ontology  (4, 4)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (IF3_GEOSE | P03000)
molecular function
    GO:0003743    translation initiation factor activity    Functions in the initiation of ribosome-mediated translation of mRNA into a polypeptide.
biological process
    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.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        IF3_GEOSE | P03000: 1tig 5me0 5me1

(-) Related Entries Specified in the PDB File

1tig C-TERMINAL DOMAIN OF IF3