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(-) Description

Title :  CRYSTAL STRUCTURE OF THE THERMUS AQUATICUS DNAB MONOMER
 
Authors :  S. Bailey, W. K. Eliason, T. A. Steitz
Date :  05 Jun 07  (Deposition) - 24 Jul 07  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.90
Chains :  Asym. Unit :  A,B,C,D
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Biol. Unit 3:  C  (1x)
Biol. Unit 4:  D  (1x)
Keywords :  Replication, Helicase, Dnab, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. Bailey, W. K. Eliason, T. A. Steitz
The Crystal Structure Of The Thermus Aquaticus Dnab Helicas Monomer.
Nucleic Acids Res. V. 35 4728 2007
PubMed-ID: 17606462  |  Reference-DOI: 10.1093/NAR/GKM507

(-) Compounds

Molecule 1 - DNAB REPLICATION FORK HELICASE
    Chains: A, B, C, D
    EC Number: 3.6.1.-
    Engineered: YES
    Expression System: ESCHERICHIA COLI BL21(DE3)
    Expression System Plasmid: PET22B
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Gene: DNAB
    Organism Scientific: THERMUS AQUATICUS
    Organism Taxid: 271

 Structural Features

(-) Chains, Units

  1234
Asymmetric Unit : ABCD
Biological Unit 1 (1x): A   
Biological Unit 2 (1x):  B  
Biological Unit 3 (1x):   C 
Biological Unit 4 (1x):    D

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 4)

Asymmetric Unit (1, 4)
No.NameCountTypeFull Name
1SO44Ligand/IonSULFATE ION
Biological Unit 1 (1, 1)
No.NameCountTypeFull Name
1SO41Ligand/IonSULFATE ION
Biological Unit 2 (1, 1)
No.NameCountTypeFull Name
1SO41Ligand/IonSULFATE ION
Biological Unit 3 (1, 1)
No.NameCountTypeFull Name
1SO41Ligand/IonSULFATE ION
Biological Unit 4 (1, 1)
No.NameCountTypeFull Name
1SO41Ligand/IonSULFATE ION

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREALA A:210 , MET A:211 , GLY A:212 , LYS A:213 , THR A:214BINDING SITE FOR RESIDUE SO4 A 445
2AC2SOFTWAREARG B:208 , PRO B:209 , ALA B:210 , MET B:211 , GLY B:212 , LYS B:213 , THR B:214 , HOH B:446BINDING SITE FOR RESIDUE SO4 B 445
3AC3SOFTWAREALA C:210 , MET C:211 , GLY C:212 , LYS C:213 , THR C:214 , HOH C:450BINDING SITE FOR RESIDUE SO4 C 445
4AC4SOFTWAREALA D:210 , MET D:211 , GLY D:212 , LYS D:213 , THR D:214BINDING SITE FOR RESIDUE SO4 D 445

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2Q6T)

(-) Cis Peptide Bonds  (7, 7)

Asymmetric Unit
No.Residues
1Asp A:317 -Tyr A:318
2Asp B:317 -Tyr B:318
3Ser B:405 -Glu B:406
4Asp C:317 -Tyr C:318
5Ser C:405 -Glu C:406
6Asp D:317 -Tyr D:318
7Ser D:405 -Glu D:406

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2Q6T)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2Q6T)

(-) Exons   (0, 0)

(no "Exon" information available for 2Q6T)

(-) Sequences/Alignments

Asymmetric 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:419
 aligned with Q9Z693_THEAQ | Q9Z693 from UniProtKB/TrEMBL  Length:444

    Alignment length:436
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364       374       384       394       404       414       424       434      
         Q9Z693_THEAQ     5 IPPHSLEAEQSVLGSILLDSDVMDEVEGLLPSPEAFYAEAHRKIYAAMQALRSQGRPVDLVTLSEELSRRGQLEEVGGTAYLLQLSEATPTAAYAEHYARIVAEKWTLRRLIQAAGEAMRLAYEEAGSLDEILDTAGKKILEVALTKTDTEARPMRELVHETFEHIEALFQNKGEVAGVRTGFKELDQLIGTLGPGSLNIIAARPAMGKTAFALTIAQNAALKEGVGVGIYSLEMPAAQLTLRMMCSEARIDMNRVRLGQLTDRDFSRLVDVASRLSEAPIYIDDTPDLTLMEVRARARRLVSQNQVGLIIIDYLQLMSGPGSGKSGENRQQEIAAISRGLKALARELGIPIIALSQLSRAVEARPNKRPMLSDLRESGSIEQDADLVMFIYRDEYYNPHSEKAGIAEIIVGKQRNGPTGTVELQFHASHVRFNDL 440
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhhhhhhhhhh..hhhhhhhhh.hhhhh.hhhhhhhhhhhhhhhhh....hhhhhhhhhhhhh.....hhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhh......eehhhhhhhhhhhh..----------....hhhhhhhhh......eeeeee....hhhhhhhhhhhhhhhh....eeeee...hhhhhhhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhh..eeee.....hhhhhhhhhhhhhhhh...eeeeehhhhh...-------hhhhhhhhhhhhhhhhhhhhh..eeeeee.hhhhhh......hhhhhhhhh.hhhhh.eeeeeee.hhh........eeeeeeee......eeeeeeee....eee.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2q6t A   5 IPPHSLEAEQSVLGSILLDSDVMDEVEGLLPSPEAFYAEAHRKIYAAMQALRSQGRPVDLVTLSEELSRRGQLEEVGGTAYLLQLSEATPTAAYAEHYARIVAEKWTLRRLIQAAGEAMRLAYEEAGSLDEILDTAGKKILEVALTKTDTEARPMRELVHETFEHIEA----------VRTGFKELDQLIGTLGPGSLNIIAARPAMGKTAFALTIAQNAALKEGVGVGIYSLEMPAAQLTLRMMCSEARIDMNRVRLGQLTDRDFSRLVDVASRLSEAPIYIDDTPDLTLMEVRARARRLVSQNQVGLIIIDYLQLMSGP-------NRQQEIAAISRGLKALARELGIPIIALSQLSRAVEARPNKRPMLSDLRESGSIEQDADLVMFIYRDEYYNPHSEKAGIAEIIVGKQRNGPTGTVELQFHASHVRFNDL 440
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       | -       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324|      334       344       354       364       374       384       394       404       414       424       434      
                                                                                                                                                                                                 172        183                                                                                                                                           325     333                                                                                                           


Chain B from PDB  Type:PROTEIN  Length:414
 aligned with Q9Z693_THEAQ | Q9Z693 from UniProtKB/TrEMBL  Length:444

    Alignment length:439
                                    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       421       431         
         Q9Z693_THEAQ     2 EGPIPPHSLEAEQSVLGSILLDSDVMDEVEGLLPSPEAFYAEAHRKIYAAMQALRSQGRPVDLVTLSEELSRRGQLEEVGGTAYLLQLSEATPTAAYAEHYARIVAEKWTLRRLIQAAGEAMRLAYEEAGSLDEILDTAGKKILEVALTKTDTEARPMRELVHETFEHIEALFQNKGEVAGVRTGFKELDQLIGTLGPGSLNIIAARPAMGKTAFALTIAQNAALKEGVGVGIYSLEMPAAQLTLRMMCSEARIDMNRVRLGQLTDRDFSRLVDVASRLSEAPIYIDDTPDLTLMEVRARARRLVSQNQVGLIIIDYLQLMSGPGSGKSGENRQQEIAAISRGLKALARELGIPIIALSQLSRAVEARPNKRPMLSDLRESGSIEQDADLVMFIYRDEYYNPHSEKAGIAEIIVGKQRNGPTGTVELQFHASHVRFNDL 440
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhhhhhhhhhhh..hhhhhhhhh.hhhhh.hhhhhhhhhhhhhhhhh....hhhhhhhhhhhh.hhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhh.------..hhhhhhhhhhhhhhhh---------....hhhhhhhhh......eeeeee....hhhhhhhhhhhhhhhhh..eeeeee...hhhhhhhhhhhhhh..hhhhh.---.hhhhhhhhhhhhhhhh...eeee.....hhhhhhhhhhhhhhhhheeeeeeehhhhh...-------hhhhhhhhhhhhhhhhhhhhh..eeeeee.hhhhhh......hhhhhhhhhhhhhhh.eeeeeehhhhhh.......eeeeeeee......eeeeeeee....eee.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2q6t B   2 EGPIPPHSLEAEQSVLGSILLDSDVMDEVEGLLPSPEAFYAEAHRKIYAAMQALRSQGRPVDLVTLSEELSRRGQLEEVGGTAYLLQLSEATPTAAYAEHYARIVAEKWTLRRLIQAAGEAMRLAYEEAGSLDEILDTAGKKILEVAL------ARPMRELVHETFEHIEAL---------VRTGFKELDQLIGTLGPGSLNIIAARPAMGKTAFALTIAQNAALKEGVGVGIYSLEMPAAQLTLRMMCSEARIDMNRVR---LTDRDFSRLVDVASRLSEAPIYIDDTPDLTLMEVRARARRLVSQNQVGLIIIDYLQLMSGP-------NRQQEIAAISRGLKALARELGIPIIALSQLSRAVEARPNKRPMLSDLRESGSIEQDADLVMFIYRDEYYNPHSEKAGIAEIIVGKQRNGPTGTVELQFHASHVRFNDL 440
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       | -    |  161       171 |       - |     191       201       211       221       231       241       251       261   |   271       281       291       301       311       321   |     - |     341       351       361       371       381       391       401       411       421       431         
                                                                                                                                                                             149    156              173       183                                                                           261 265                                                         325     333                                                                                                           


Chain C from PDB  Type:PROTEIN  Length:406
 aligned with Q9Z693_THEAQ | Q9Z693 from UniProtKB/TrEMBL  Length:444

    Alignment length:437
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       
         Q9Z693_THEAQ     4 PIPPHSLEAEQSVLGSILLDSDVMDEVEGLLPSPEAFYAEAHRKIYAAMQALRSQGRPVDLVTLSEELSRRGQLEEVGGTAYLLQLSEATPTAAYAEHYARIVAEKWTLRRLIQAAGEAMRLAYEEAGSLDEILDTAGKKILEVALTKTDTEARPMRELVHETFEHIEALFQNKGEVAGVRTGFKELDQLIGTLGPGSLNIIAARPAMGKTAFALTIAQNAALKEGVGVGIYSLEMPAAQLTLRMMCSEARIDMNRVRLGQLTDRDFSRLVDVASRLSEAPIYIDDTPDLTLMEVRARARRLVSQNQVGLIIIDYLQLMSGPGSGKSGENRQQEIAAISRGLKALARELGIPIIALSQLSRAVEARPNKRPMLSDLRESGSIEQDADLVMFIYRDEYYNPHSEKAGIAEIIVGKQRNGPTGTVELQFHASHVRFNDL 440
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....hhhhhhhhhhhhhhh..hhhhhhhhh.hhhhh.hhhhhhhhhhhhhhhhh....hhhhhhhhhhhh.hhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhh--------------..hhhhhhhhh......eeeeee....hhhhhhhhhhhhhhh....eeeeee...hhhhhhhhhhhhhh.....----------.hhhhhhhhhhhh...eeee.....hhhhhhhhhhhhhhhh.eeeeeeehhhhh...-------hhhhhhhhhhhhhhhhhhhhh..eeeeee...hhhhh.....hhhhhhhhh.......eeeeeeehhhhh.......eeeeeeee......eeeeeeee....eee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2q6t C   4 PIPPHSLEAEQSVLGSILLDSDVMDEVEGLLPSPEAFYAEAHRKIYAAMQALRSQGRPVDLVTLSEELSRRGQLEEVGGTAYLLQLSEATPTAAYAEHYARIVAEKWTLRRLIQAAGEAMRLAYEEAGSLDEILDTAGKKILEVALTKTDTEARPMRELVHETFEHI--------------TGFKELDQLIGTLGPGSLNIIAARPAMGKTAFALTIAQNAALKEGVGVGIYSLEMPAAQLTLRMMCSEARIDMN----------DFSRLVDVASRLSEAPIYIDDTPDLTLMEVRARARRLVSQNQVGLIIIDYLQLMSGP-------NRQQEIAAISRGLKALARELGIPIIALSQLSRAVEARPNKRPMLSDLRESGSIEQDADLVMFIYRDEYYNPHSEKAGIAEIIVGKQRNGPTGTVELQFHASHVRFNDL 440
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163      |  -         - |     193       203       213       223       233       243       253    |    -     | 273       283       293       303       313       323 |     333       343       353       363       373       383       393       403       413       423       433       
                                                                                                                                                                                                170            185                                                                      258        269                                                     325     333                                                                                                           


Chain D from PDB  Type:PROTEIN  Length:402
 aligned with Q9Z693_THEAQ | Q9Z693 from UniProtKB/TrEMBL  Length:444

    Alignment length:437
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       
         Q9Z693_THEAQ     4 PIPPHSLEAEQSVLGSILLDSDVMDEVEGLLPSPEAFYAEAHRKIYAAMQALRSQGRPVDLVTLSEELSRRGQLEEVGGTAYLLQLSEATPTAAYAEHYARIVAEKWTLRRLIQAAGEAMRLAYEEAGSLDEILDTAGKKILEVALTKTDTEARPMRELVHETFEHIEALFQNKGEVAGVRTGFKELDQLIGTLGPGSLNIIAARPAMGKTAFALTIAQNAALKEGVGVGIYSLEMPAAQLTLRMMCSEARIDMNRVRLGQLTDRDFSRLVDVASRLSEAPIYIDDTPDLTLMEVRARARRLVSQNQVGLIIIDYLQLMSGPGSGKSGENRQQEIAAISRGLKALARELGIPIIALSQLSRAVEARPNKRPMLSDLRESGSIEQDADLVMFIYRDEYYNPHSEKAGIAEIIVGKQRNGPTGTVELQFHASHVRFNDL 440
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) -DnaB-2q6tD05 D:5-108                                                                                    --------------------------------------------  --------------------          DnaB_C-2q6tD01 D:185-440                                                                                                                                                                                                                                         Pfam domains (1)
           Pfam domains (2) -DnaB-2q6tD06 D:5-108                                                                                    --------------------------------------------  --------------------          DnaB_C-2q6tD02 D:185-440                                                                                                                                                                                                                                         Pfam domains (2)
           Pfam domains (3) -DnaB-2q6tD07 D:5-108                                                                                    --------------------------------------------  --------------------          DnaB_C-2q6tD03 D:185-440                                                                                                                                                                                                                                         Pfam domains (3)
           Pfam domains (4) -DnaB-2q6tD08 D:5-108                                                                                    --------------------------------------------  --------------------          DnaB_C-2q6tD04 D:185-440                                                                                                                                                                                                                                         Pfam domains (4)
         Sec.struct. author .....hhhhhhhhhhhhhhh..hhhhhhh...hhhhh.hhhhhhhhhhhhhhhhhh...hhhhhhhhhhhh.hhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhh......--..eehhhhhhhhhhhhhhh.----------..hhhhhhhhh......eeeeee....hhhhhhhhhhhhhhhh....eeeee...hhhhhhhhhhhhhhh---------------..hhhhhhhhhh...eeee.....hhhhhhhhhhhhhhhhh...eeeehhhhh..--------hhhhhhhhhhhhhhhhhhhhh..eeeeee.hhhhhhh.....hhhhhh....hhhhh.eeeeeehhhhh........eeeeeeee......eeeeeeee....eee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2q6t D   4 PIPPHSLEAEQSVLGSILLDSDVMDEVEGLLPSPEAFYAEAHRKIYAAMQALRSQGRPVDLVTLSEELSRRGQLEEVGGTAYLLQLSEATPTAAYAEHYARIVAEKWTLRRLIQAAGEAMRLAYEEAGSLDEILDTAGKKILEVALTKT--EARPMRELVHETFEHIEALF----------TGFKELDQLIGTLGPGSLNIIAARPAMGKTAFALTIAQNAALKEGVGVGIYSLEMPAAQLTLRMMCSEAR---------------FSRLVDVASRLSEAPIYIDDTPDLTLMEVRARARRLVSQNQVGLIIIDYLQLMSG--------NRQQEIAAISRGLKALARELGIPIIALSQLSRAVEARPNKRPMLSDLRESGSIEQDADLVMFIYRDEYYNPHSEKAGIAEIIVGKQRNGPTGTVELQFHASHVRFNDL 440
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143        |- |     163       173|        - |     193       203       213       223       233       243       253|        -      |273       283       293       303       313       323|      333       343       353       363       373       383       393       403       413       423       433       
                                                                                                                                                                              152  |                174        185                                                                  254             270                                                   324      333                                                                                                           
                                                                                                                                                                                 155
   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  (0, 0)

(no "SCOP Domain" information available for 2Q6T)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2Q6T)

(-) Pfam Domains  (2, 8)

Asymmetric Unit
(-)
Clan: P-loop_NTPase (1112)
(-)
Family: DnaB_C (8)
(-)
Thermus aquaticus (1)
1aDnaB_C-2q6tD01D:185-440
1bDnaB_C-2q6tD02D:185-440
1cDnaB_C-2q6tD03D:185-440
1dDnaB_C-2q6tD04D:185-440
(-)
Clan: no clan defined [family: DnaB] (9)
(-)
Family: DnaB (9)
(-)
Thermus aquaticus (1)
2aDnaB-2q6tD05D:5-108
2bDnaB-2q6tD06D:5-108
2cDnaB-2q6tD07D:5-108
2dDnaB-2q6tD08D:5-108

(-) Gene Ontology  (10, 10)

Asymmetric Unit(hide GO term definitions)
Chain A,B,C,D   (Q9Z693_THEAQ | Q9Z693)
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: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:0032508    DNA duplex unwinding    The process in which interchain hydrogen bonds between two strands of DNA are broken or 'melted', generating a region of unpaired single strands.
    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.
cellular component
    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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  2q6t
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 Related Entries

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