2QK8 - JenaLib

Title :   CRYSTAL STRUCTURE OF THE ANTHRAX DRUG TARGET, BACILLUS ANTHRACIS DIHYDROFOLATE REDUCTASE

Authors :   B. C. Bennett, H. Xu, R. F. Simmerman, R. E. Lee, C. G. Dealwis

Date :   10 Jul 07 (Deposition) - 28 Aug 07 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.40

Chains :   Asym./Biol. Unit : A

Keywords :   Oxidoreductase, Methotrexate, Pteridine Binding, Nucleotide Phosphate Binding, Pseudo-Rossman Fold (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   B. C. Bennett, H. Xu, R. F. Simmerman, R. E. Lee, C. G. Dealwis
Crystal Structure Of The Anthrax Drug Target, Bacillus Anthracis Dihydrofolate Reductase.
J. Med. Chem. V. 50 4374 2007
PubMed-ID: 17696333 | Reference-DOI: 10.1021/JM070319V

Compounds

Molecule 1 - DIHYDROFOLATE REDUCTASE
	Chains	:	A
	EC Number	:	1.5.1.3
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	CHAMPION PET-SUMO
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PROCARYOTIC FUSION EXPRESSION PLASMID WITH T7 PROMOTER AND N-TERMINAL HEXAHISTIDINE AND SUMO TAGS
	Gene	:	DFRA
	Organism Scientific	:	BACILLUS ANTHRACIS STR.
	Organism Taxid	:	260799
	Strain	:	STERNE

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 1)

Sites (0, 0)

SS Bonds (0, 0)

Cis Peptide Bonds (1, 1)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

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)
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Chain A from PDB  Type:PROTEIN  Length:162
 aligned with Q81R22_BACAN | Q81R22 from UniProtKB/TrEMBL  Length:162

    Alignment length:162
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160  
         Q81R22_BACAN     1 MIVSFMVAMDENRVIGKDNNLPWRLPSELQYVKKTTMGHPLIMGRKNYEAIGRPLPGRRNIIVTRNEGYHVEGCEVAHSVEEVFELCKNEEEIFIFGGAQIYDLFLPYVDKLYITKIHHAFEGDTFFPEMDMTNWKEVFVEKGLTDEKNPYTYYYHVYEKQQ 162
               SCOP domains d2qk8a_ A: automated matches                                                                                                                                       SCOP domains
               CATH domains 2qk8A00 A:1-162 Dihydrofolate Reductase, subunit A                                                                                                                 CATH domains
               Pfam domains -DHFR_1-2qk8A01 A:2-160                                                                                                                                         -- Pfam domains
         Sec.struct. author .eeeeeeee....eee........hhhhhhhhhhhhh...eeeehhhhhhhh.......eeee...........eee.hhhhhhhhh....eeeeeehhhhhhhh.....eeeeee........ee..........eeeeee...........eeeeee... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2qk8 A   1 MIVSFMVAMDENRVIGKDNNLPWRLPSELQYVKKTTMGHPLIMGRKNYEAIGRPLPGRRNIIVTRNEGYHVEGCEVAHSVEEVFELCKNEEEIFIFGGAQIYDLFLPYVDKLYITKIHHAFEGDTFFPEMDMTNWKEVFVEKGLTDEKNPYTYYYHVYEKQQ 162
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
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	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 (1, 1)

CATH Domains (1, 1)

Pfam Domains (1, 1)

Gene Ontology (11, 11)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (Q81R22_BACAN | Q81R22)

molecular function
	GO:0050661	NADP binding	Interacting selectively and non-covalently with nicotinamide-adenine dinucleotide phosphate, a coenzyme involved in many redox and biosynthetic reactions; binding may be to either the oxidized form, NADP+, or the reduced form, NADPH.
	GO:0004146	dihydrofolate reductase activity	Catalysis of the reaction: 5,6,7,8-tetrahydrofolate + NADP+ = 7,8-dihydrofolate + NADPH + H+.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	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:0016491	oxidoreductase activity	Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
biological process
	GO:0006760	folic acid-containing compound metabolic process	The chemical reactions and pathways involving a folic acid-containing compound, i.e. any of a group of heterocyclic compounds based on the pteroic acid skeleton conjugated with one or more L-glutamic acid or L-glutamate units.
	GO:0006545	glycine biosynthetic process	The chemical reactions and pathways resulting in the formation of glycine, aminoethanoic acid.
	GO:0009165	nucleotide biosynthetic process	The chemical reactions and pathways resulting in the formation of nucleotides, any nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the glycose moiety; may be mono-, di- or triphosphate; this definition includes cyclic-nucleotides (nucleoside cyclic phosphates).
	GO:0006730	one-carbon metabolic process	The chemical reactions and pathways involving the transfer of one-carbon units in various oxidation states.
	GO:0055114	oxidation-reduction process	A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
	GO:0046654	tetrahydrofolate biosynthetic process	The chemical reactions and pathways resulting in the formation of tetrahydrofolate, 5,6,7,8-tetrahydrofolic acid, a folate derivative bearing additional hydrogens on the pterin group.

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		Asn A:134 - Trp A:135	[ RasMol ]

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