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(-) Description

Title :  2.0 ANGSTROM CRYSTAL STRUCTURE OF A DNAB INTEIN FROM SYNECHOCYSTIS SP. PCC 6803
 
Authors :  Y. Ding, X. Chen, S. Ferrandon, M. Xu, Z. Rao
Date :  22 Aug 02  (Deposition) - 19 Aug 03  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  All Beta-Strands, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  Y. Ding, M. Q. Xu, I. Ghosh, X. Chen, S. Ferrandon, G. Lesage, Z. Rao
Crystal Structure Of Mini-Intein Reveals A Conserved Catalytic Module Involved In Side Chain Cyclization Of Asparagine During Protein Splicing
J. Biol. Chem. V. 278 39133 2003
PubMed-ID: 12878593  |  Reference-DOI: 10.1074/JBC.M306197200

(-) Compounds

Molecule 1 - DNAB INTEIN
    ChainsA
    EC Number3.6.1.-
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPTWIN
    Expression System Taxid562
    Expression System Vector TypePLASMID
    Organism ScientificSYNECHOCYSTIS SP.
    Organism Taxid1148
    Other DetailsTETHERED DIMER LINKED BY LESSSLQLSPEIEKLSQ
    StrainPCC 6803
    SynonymREPLICATIVE DNA HELICASE

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit A
Biological Unit 1 (2x)A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1MI8)

(-) Sites  (0, 0)

(no "Site" information available for 1MI8)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1MI8)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1MI8)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1MI8)

(-) PROSITE Motifs  (2, 2)

Asymmetric Unit (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1INTEIN_N_TERPS50817 Intein N-terminal splicing motif profile.DNAB_SYNY3381-457  1A:2-77
2INTEIN_C_TERPS50818 Intein C-terminal splicing motif profile.DNAB_SYNY3788-810  1A:133-155
Biological Unit 1 (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1INTEIN_N_TERPS50817 Intein N-terminal splicing motif profile.DNAB_SYNY3381-457  2A:2-77
2INTEIN_C_TERPS50818 Intein C-terminal splicing motif profile.DNAB_SYNY3788-810  2A:133-155

(-) Exons   (0, 0)

(no "Exon" information available for 1MI8)

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
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  UniProt sequence: complete  aligned part    
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SAPs(SNPs) PROSITE motifs Exons
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Chain A from PDB  Type:PROTEIN  Length:141
 aligned with DNAB_SYNY3 | Q55418 from UniProtKB/Swiss-Prot  Length:872

    Alignment length:433
                                   388       398       408       418       428       438       448       458       468       478       488       498       508       518       528       538       548       558       568       578       588       598       608       618       628       638       648       658       668       678       688       698       708       718       728       738       748       758       768       778       788       798       808   
           DNAB_SYNY3   379 SGCISGDSLISLASTGKRVSIKDLLDEKDFEIWAINEQTMKLESAKVSRVFCTGKKLVYILKTRLGRTIKATANHRFLTIDGWKRLDELSLKEHIALPRKLESSSLQLMSDEELGLLGHLIGDGCTLPRHAIQYTSNKIELAEKVVELAKAVFGDQINPRISQERQWYQVYIPASYRLTHNKKNPITKWLENLDVFGLRSYEKFVPNQVFEQPQRAIAIFLRHLWSTDGCVKLIVEKSSRPVAYYATSSEKLAKDVQSLLLKLGINARLSKISQNGKGRDNYHVTITGQADLQIFVDQIGAVDKDKQASVEEIKTHIAQHQANTNRDVIPKQIWKTYVLPQIQIKGITTRDLQMRLGNAYCGTALYKHNLSRERAAKIATITQSPEIEKLSQSDIYWDSIVSITETGVEEVFDLTVPGPHNFVANDIIVHNSI 811
               SCOP domains d1mi8a_ A: DnaB intein                                                                                                                                                                                                                                                                                                                                                                                                                            SCOP domains
               CATH domains 1mi8A00 A:-2-156 Endonuclease - Pi-scei; Chain A, domain 1                                                                                                                                                                                                                                                                                                                                                                                        CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...ee...eee......eee.hhhh.....eeeeee....eeeeee..eeeeeeeeeeeeeee....eeee....eeee..eeee.hhh....eeeee..----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------..eeeeeeeeeeeeeeeeeeeee.....eeee..eeee... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --INTEIN_N_TER  PDB: A:2-77 UniProt: 381-457                                   ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------INTEIN_C_TER           - PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1mi8 A  -2 SGAISGDSLISLASTGKRVSIKDLLDEKDFEIWAINEQTMKLESAKVSRVFMTGKKLVYILKTRLGRTIKATANHRFLTIDGWKRLDELSLKEHIALPRK----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------SDISWDSIVSITETGVEEVFDLTVPGPHNFVANDIIVHASI 156
                             ||      8        18        28        38        48        58        68        78        88        98         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -         -  |    123       133       143       153   
                             ||                                                                                               98                                                                                                                                                                                                                                                                                                  116                                        
                            -1|                                                                                                                                                                                                                                                                                                                                                                                                                                              
                              1                                                                                                                                                                                                                                                                                                                                                                                                                                              

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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 Unit

(-) CATH Domains  (1, 1)

Asymmetric Unit
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1MI8)

(-) Gene Ontology  (14, 14)

Asymmetric Unit(hide GO term definitions)
Chain A   (DNAB_SYNY3 | Q55418)
molecular function
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0003678    DNA helicase activity    Catalysis of the reaction: NTP + H2O = NDP + phosphate, to drive the unwinding of a DNA helix.
    GO:0004519    endonuclease activity    Catalysis of the hydrolysis of ester linkages within nucleic acids by creating internal breaks.
    GO:0004386    helicase activity    Catalysis of the reaction: NTP + H2O = NDP + phosphate, to drive the unwinding of a DNA or RNA helix.
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
    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.
biological process
    GO:0006260    DNA replication    The cellular metabolic process in which a cell duplicates one or more molecules of DNA. DNA replication begins when specific sequences, known as origins of replication, are recognized and bound by initiation proteins, and ends when the original DNA molecule has been completely duplicated and the copies topologically separated. The unit of replication usually corresponds to the genome of the cell, an organelle, or a virus. The template for replication can either be an existing DNA molecule or RNA.
    GO:0006269    DNA replication, synthesis of RNA primer    The synthesis of a short RNA polymer, usually 4-15 nucleotides long, using one strand of unwound DNA as a template; the RNA then serves as a primer from which DNA polymerases extend synthesis.
    GO:0006268    DNA unwinding involved in DNA replication    The process in which interchain hydrogen bonds between two strands of DNA are broken or 'melted', generating unpaired template strands for DNA replication.
    GO:0016539    intein-mediated protein splicing    The removal of an internal amino acid sequence (an intein) from a protein during protein maturation; the excision of inteins is precise and the N- and C-terminal exteins are joined by a normal peptide bond. Protein splicing involves 4 nucleophilic displacements by the 3 conserved splice junction residues.
    GO:0090305    nucleic acid phosphodiester bond hydrolysis    The nucleic acid metabolic process in which the phosphodiester bonds between nucleotides are cleaved by hydrolysis.
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:1990077    primosome complex    Any of a family of protein complexes that form at the origin of replication or stalled replication forks and function in replication primer synthesis in all organisms. Early complexes initiate double-stranded DNA unwinding. The core unit consists of a replicative helicase and a primase. The helicase further unwinds the DNA and recruits the polymerase machinery. The primase synthesizes RNA primers that act as templates for complementary stand replication by the polymerase machinery. The primosome contains a number of associated proteins and protein complexes and contributes to the processes of replication initiation, lagging strand elongation, and replication restart.

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