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(-) Description

Title :  STRUCTURE OF THE ARCHAEAL INITIATION FACTOR EIF2 ALPHA-GAMMA HETERODIMER FROM SULFOLOBUS SOLFATARICUS COMPLEXED WITH GDPNP
 
Authors :  L. Yatime, Y. Mechulam, S. Blanquet, E. Schmitt
Date :  28 Jul 05  (Deposition) - 31 Jan 06  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.00
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Initiation Of Translation (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  L. Yatime, Y. Mechulam, S. Blanquet, E. Schmitt
Structural Switch Of The Gamma Subunit In An Archaeal Aif2Alphagamma Heterodimer
Structure V. 14 119 2006
PubMed-ID: 16407071  |  Reference-DOI: 10.1016/J.STR.2005.09.020
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - TRANSLATION INITIATION FACTOR 2 GAMMA SUBUNIT
    ChainsA
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET3A
    Expression System StrainBL21 ROSETTA
    Expression System Taxid562
    Expression System Vector TypePLASMID
    Organism ScientificSULFOLOBUS SOLFATARICUS
    Organism Taxid2287
    SynonymEIF-2-GAMMA, AIF2- GAMMA
 
Molecule 2 - TRANSLATION INITIATION FACTOR 2 ALPHA SUBUNIT
    ChainsB
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET3A
    Expression System StrainBL21 ROSETTA
    Expression System Taxid562
    Expression System Vector TypePLASMID
    Organism ScientificSULFOLOBUS SOLFATARICUS
    Organism Taxid2287
    SynonymEIF-2-ALPHA, AIF2- ALPHA

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit AB

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (3, 3)
No.NameCountTypeFull Name
1GNP1Ligand/IonPHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
2MG1Ligand/IonMAGNESIUM ION
3ZN1Ligand/IonZINC ION

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETHR A:23 , THR A:46 , HOH A:513 , GNP A:912BINDING SITE FOR RESIDUE MG A 913
2AC2SOFTWARECYS A:59 , CYS A:62 , CYS A:74 , CYS A:77BINDING SITE FOR RESIDUE ZN A 914
3AC3SOFTWAREVAL A:18 , ASP A:19 , HIS A:20 , GLY A:21 , LYS A:22 , THR A:23 , THR A:24 , MET A:45 , THR A:46 , GLY A:96 , ASN A:149 , LYS A:150 , ASP A:152 , VAL A:153 , SER A:184 , ALA A:185 , LEU A:186 , HOH A:513 , MG A:913BINDING SITE FOR RESIDUE GNP A 912

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2AHO)

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Lys A:64 -Pro A:65
2Leu A:256 -Pro A:257

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2AHO)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1S1PS50126 S1 domain profile.IF2A_SULSO12-83  1B:12-83

(-) Exons   (0, 0)

(no "Exon" information available for 2AHO)

(-) 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:401
 aligned with IF2G_SULSO | Q980A5 from UniProtKB/Swiss-Prot  Length:415

    Alignment length:414
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411    
           IF2G_SULSO     2 AWPKVQPEVNIGVVGHVDHGKTTLVQAITGIWTSKHSEELKRGMTIKLGYAETNIGVCESCKKPEAYVTEPSCKSCGSDDEPKFLRRISFIDAPGHEVLMATMLSGAALMDGAILVVAANEPFPQPQTREHFVALGIIGVKNLIIVQNKVDVVSKEEALSQYRQIKQFTKGTWAENVPIIPVSALHKINIDSLIEGIEEYIKTPYRDLSQKPVMLVIRSFDVNKPGTQFNELKGGVIGGSIIQGLFKVDQEIKVLPGLRVEKQGKVSYEPIFTKISSIRFGDEEFKEAKPGGLVAIGTYLDPSLTKADNLLGSIITLADAEVPVLWNIRIKYNLLERVVGAKEMLKVDPIRAKETLMLSVGSSTTLGIVTSVKKDEIEVELRRPVAVWSNNIRTVISRQIAGRWRMIGWGLVEI 415
               SCOP domains d2ahoa3 A:2-206 Initiation factor         eIF2 gamma subunit, N-terminal (G) domain                                                                                                                          d2ahoa1 A:207-320 Initiation factor eIF2 gamma subunit,      domain II                                            d2ahoa2 A:321-415 Initiation factor eIF2 gamma subunit                                          SCOP domains
               CATH domains 2ahoA01 A:2-207 P-loop containing         nucleotide triphosphate hydrolases                                                                                                                                  2ahoA02 A:208-322 Translation factors                                                                              2ahoA03 A:323-415 Translation factors                                                         CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ........eeeee......hhhhhhhhhhh....--------......eeeeeeeee.........ee..............eeeeeeeeee...hhhhhhhhhhhhh...eeeeee.......hhhhhhhhhhhhhhh...eeeee.hhhhh..hhhhhhhhhhhhhh...................hhhhhhhhhhhhh...........eeeeeeee.......hhhhh...eeeeeeee..ee...eeeeeeeee.-----..eeeeeeeeeeeee..eee.ee.....eeeee...............eeee......eeeeeeeeeee....................eeeeee..eeeeeeeeeee..eeeeeeeeeee......eeeeee......eeeeeeeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2aho A   2 AWPKVQPEVNIGVVGHVDHGKTTLVQAITGIWTS--------GMTIKLGYAETNIGVCESCKKPEAYVTEPSCKSCGSDDEPKFLRRISFIDAPGHEVLMATMLSGAALMDGAILVVAANEPFPQPQTREHFVALGIIGVKNLIIVQNKVDVVSKEEALSQYRQIKQFTKGTWAENVPIIPVSALHKINIDSLIEGIEEYIKTPYRDLSQKPVMLVIRSFDVNKPGTQFNELKGGVIGGSIIQGLFKVDQEIKVLPGLRV-----VSYEPIFTKISSIRFGDEEFKEAKPGGLVAIGTYLDPSLTKADNLLGSIITLADAEVPVLWNIRIKYNLLERVVGAKEMLKVDPIRAKETLMLSVGSSTTLGIVTSVKKDEIEVELRRPVAVWSNNIRTVISRQIAGRWRMIGWGLVEI 415
                                    11        21        31   |     -  |     51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261     | 271       281       291       301       311       321       331       341       351       361       371       381       391       401       411    
                                                            35       44                                                                                                                                                                                                                      261   267                                                                                                                                                    

Chain B from PDB  Type:PROTEIN  Length:259
 aligned with IF2A_SULSO | Q97Z79 from UniProtKB/Swiss-Prot  Length:266

    Alignment length:264
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260    
           IF2A_SULSO     1 MIYSRSKLPSEGEILIATVKQVFDYGSYVSLDEYGGLQAFLPWSEVSSKWVKNIRDVLKENRKVIVKVIRVDRRKGTVDVSLKKVTDDERRKKNLQWKKIQRLDKILELVSQKLKLSEKDAWEQVAWKLEAKYGDPITAIEKAVKEGEKILIDAGVPEIWVKPLLEEASKHAEERKVKMSGLITVRTNEPLGVEKIKEVISKALENIEQDYESLLNIKIYTIGAPRYRVDVVGTNPKEASEALNQIISNLIKIGKEENVDISVV 264
               SCOP domains d2ahob2 B:1-84 Eukaryotic initiation factor 2al     pha, eIF2alpha, N-terminal domaid2ahob1 B:85-175 Eukaryotic initiation factor 2alpha, eIF2alpha, domain 2                  d2ahob3 B:176-264 eIF-2-alpha, C-terminal domain                                          SCOP domains
               CATH domains 2ahoB01 B:1-85 Nucleic acid-binding proteins                                         ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ...............eeeeeeee..eeeeee.....eeeeehhhhh.-----hhhhhh....eee.eeeeee....eeeee......hhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhh....hhhhhhhhhhhh.hhhhhh......hhhhhhhhhhhhhhhh.eeeeeeeeee....hhhhhhhhhhhhhh............eeeee....eeeeeeee.hhhhhhhhhhhhhhhhhhhhh....eeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE -----------S1  PDB: B:12-83 UniProt: 12-83                                         ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2aho B   1 MIYSRSKLPSEGEILIATVKQVFDYGSYVSLDEYGGLQAFLPWSEVS-----NIRDVLKENRKVIVKVIRVDRRKGTVDVSLKKVTDDERRKKNLQWKKIQRLDKILELVSQKLKLSEKDAWEQVAWKLEAKYGDPITAIEKAVKEGEKILIDAGVPEIWVKPLLEEASKHAEERKVKMSGLITVRTNEPLGVEKIKEVISKALENIEQDYESLLNIKIYTIGAPRYRVDVVGTNPKEASEALNQIISNLIKIGKEENVDISVV 264
                                    10        20        30        40      |  -  |     60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260    
                                                                         47    53                                                                                                                                                                                                                   

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  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  (6, 6)

Asymmetric/Biological Unit

(-) CATH Domains  (3, 4)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2AHO)

(-) Gene Ontology  (14, 17)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (IF2G_SULSO | Q980A5)
molecular function
    GO:0005525    GTP binding    Interacting selectively and non-covalently with GTP, guanosine triphosphate.
    GO:0003924    GTPase activity    Catalysis of the reaction: GTP + H2O = GDP + phosphate.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    GO:0003746    translation elongation factor activity    Functions in chain elongation 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:0001731    formation of translation preinitiation complex    The joining of the small ribosomal subunit, ternary complex, and mRNA.
    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:0006414    translational elongation    The successive addition of amino acid residues to a nascent polypeptide chain during protein biosynthesis.
    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:0005622    intracellular    The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.

Chain B   (IF2A_SULSO | Q97Z79)
molecular function
    GO:0003723    RNA binding    Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
    GO:0003676    nucleic acid binding    Interacting selectively and non-covalently with any nucleic acid.
    GO:0043022    ribosome binding    Interacting selectively and non-covalently with any part of a ribosome.
    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:0005840    ribosome    An intracellular organelle, about 200 A in diameter, consisting of RNA and protein. It is the site of protein biosynthesis resulting from translation of messenger RNA (mRNA). It consists of two subunits, one large and one small, each containing only protein and RNA. Both the ribosome and its subunits are characterized by their sedimentation coefficients, expressed in Svedberg units (symbol: S). Hence, the prokaryotic ribosome (70S) comprises a large (50S) subunit and a small (30S) subunit, while the eukaryotic ribosome (80S) comprises a large (60S) subunit and a small (40S) subunit. Two sites on the ribosomal large subunit are involved in translation, namely the aminoacyl site (A site) and peptidyl site (P site). Ribosomes from prokaryotes, eukaryotes, mitochondria, and chloroplasts have characteristically distinct ribosomal proteins.

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 Related Entries

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

UniProtKB/Swiss-Prot
        IF2A_SULSO | Q97Z792qmu 2qn6 3cw2 3qsy 3v11 5jb3 5jbh
        IF2G_SULSO | Q980A52plf 2pmd 2qmu 2qn6 3cw2 3i1f 3pen 3qsy 3sjz 3v11 4m0l 4m2l 4m4s 4m53 4nbs 4qfm 4qhy 4rcy 4rcz 4rd0 4rd1 4rd2 4rd3 4rd4 4rd6 4rjl 5dsz 5jb3 5jbh

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 2AHO)