1VCC - JenaLib

Title :   AMINO TERMINAL 9KDA DOMAIN OF VACCINIA VIRUS DNA TOPOISOMERASE I RESIDUES 1-77, EXPERIMENTAL ELECTRON DENSITY FOR RESIDUES 1-77

Authors :   A. Sharma, R. Hanai, A. Mondragon

Date :   02 Oct 95 (Deposition) - 08 Mar 96 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.60

Chains :   Asym./Biol. Unit : A

Keywords :   Dna Binding (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   A. Sharma, R. Hanai, A. Mondragon
Crystal Structure Of The Amino-Terminal Fragment Of Vaccini Virus Dna Topoisomerase I At 1. 6 A Resolution.
Structure V. 2 767 1994
PubMed-ID: 7994576 | Reference-DOI: 10.1016/S0969-2126(94)00077-8

Compounds

Molecule 1 - DNA TOPOISOMERASE I
	Chains	:	A
	EC Number	:	5.99.1.2
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Fragment	:	AMINO TERMINAL 9KDA, RESIDUES 1 - 77
	Organism Scientific	:	VACCINIA VIRUS
	Organism Taxid	:	10254
	Other Details	:	DOMAIN GENERATED BY MILD PROTEOLYSIS OF THE INTACT 36KDA VACCINIA VIRUS DNA TOPOISOMERASE I, A MEMBER OF THE EUKARYOTIC- LIKE TYPE I DNA TOPOISOMERASES
	Other Details - Source	:	ACTIVE FORM
	Strain	:	WR

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (0, 0)

Sites (0, 0)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

Sequences/Alignments

Asymmetric/Biological Unit

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Chain A from PDB  Type:PROTEIN  Length:77
 aligned with TOP1_VACCW | P68698 from UniProtKB/Swiss-Prot  Length:314

    Alignment length:77
                                    10        20        30        40        50        60        70       
            TOP1_VACCW    1 MRALFYKDGKLFTDNNFLNPVSDDNPAYEVLQHVKIPTHLTDVVVYEQTWEEALTRLIFVGSDSKGRRQYFYGKMHV 77
               SCOP domains d1vcca_ A: Vaccinia DNA topoisomerase I, 9 kDa N-terminal fragment            SCOP domains
               CATH domains 1vccA00 A:1-77 Viral Topoisomerase I                                          CATH domains
               Pfam domains ---VirDNA-topo-I_N-1vccA02 A:4-61                            Topoisom_I-1vccA Pfam domains
         Sec.struct. author ..eeeee..eee.............hhhhhhhh..........eee...hhhhhh.eeeeee.....eeeee..... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------- Transcript
                  1vcc A  1 MRALFYKDGKLFTDNNFLNPVSDDNPAYEVLQHVKIPTHLTDVVVYEQTWEEALTRLIFVGSDSKGRRQYFYGKMHV 77
                                    10        20        30        40        50        60        70

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Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (1, 1)

Pfam Domains (2, 2)

Gene Ontology (7, 7)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (TOP1_VACCW | P68698)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	GO:0003916	DNA topoisomerase activity	Catalysis of the transient cleavage and passage of individual DNA strands or double helices through one another, resulting a topological transformation in double-stranded DNA.
	GO:0003917	DNA topoisomerase type I activity	Catalysis of a DNA topological transformation by transiently cleaving one DNA strand at a time to allow passage of another strand; changes the linking number by +1 per catalytic cycle.
	GO:0003918	DNA topoisomerase type II (ATP-hydrolyzing) activity	Catalysis of a DNA topological transformation by transiently cleaving a pair of complementary DNA strands to form a gate through which a second double-stranded DNA segment is passed, after which the severed strands in the first DNA segment are rejoined; product release is coupled to ATP binding and hydrolysis; changes the linking number in multiples of 2.
	GO:0016853	isomerase activity	Catalysis of the geometric or structural changes within one molecule. Isomerase is the systematic name for any enzyme of EC class 5.
biological process
	GO:0006265	DNA topological change	The process in which a transformation is induced in the topological structure of a double-stranded DNA helix, resulting in a change in linking number.
cellular component
	GO:0019012	virion	The complete fully infectious extracellular virus particle.

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