1AI9 - JenaLib

Asym./Biol. Unit - manually (Jmol Viewer)

Asym./Biol. Unit (Jmol Viewer)

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Title :   CANDIDA ALBICANS DIHYDROFOLATE REDUCTASE

Authors :   M. Whitlow, A. J. Howard, D. Stewart

Date :   01 May 97 (Deposition) - 12 Nov 97 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.85

Chains :   Asym./Biol. Unit : A,B

Keywords :   Oxidoreductase, Antifungal Target, Reductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. Whitlow, A. J. Howard, D. Stewart, K. D. Hardman, L. F. Kuyper, D. P. Baccanari, M. E. Fling, R. L. Tansik
X-Ray Crystallographic Studies Of Candida Albicans Dihydrofolate Reductase. High Resolution Structures Of The Holoenzyme And An Inhibited Ternary Complex.
J. Biol. Chem. V. 272 30289 1997
PubMed-ID: 9374515 | Reference-DOI: 10.1074/JBC.272.48.30289
(for further references see the PDB file header)

Molecule 1 - DIHYDROFOLATE REDUCTASE
	Chains	:	A, B
	EC Number	:	1.5.1.3
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Cellular Location	:	CYTOPLASM
	Expression System Strain	:	BL21
	Expression System Taxid	:	469008
	Expression System Variant	:	DE3
	Expression System Vector Type	:	PLASMID
	Organism Scientific	:	CANDIDA ALBICANS
	Organism Taxid	:	5476
	Other Details	:	ACTS AS A MONOMER WITH NADPH
	Synonym	:	DHFR

		1	2
Asymmetric/Biological Unit	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (1, 2)

No.	Name	Count	Type	Full Name
1	NDP	2	Ligand/Ion	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDEPHOSPHATE

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	VAL A:10 , ALA A:11 , ILE A:19 , GLY A:23 , LYS A:24 , MET A:25 , ARG A:30 , LYS A:31 , GLY A:55 , ARG A:56 , LYS A:57 , THR A:58 , LEU A:77 , SER A:78 , ARG A:79 , SER A:94 , ILE A:112 , GLY A:114 , ALA A:115 , GLU A:116 , ILE A:117 , TYR A:118 , GLU A:120 , HOH A:360	BINDING SITE FOR RESIDUE NDP A 193
2	AC2	SOFTWARE	ALA B:11 , ILE B:19 , GLY B:20 , LYS B:22 , GLY B:23 , LYS B:24 , MET B:25 , GLY B:55 , ARG B:56 , LYS B:57 , THR B:58 , LEU B:77 , SER B:78 , ARG B:79 , SER B:94 , SER B:95 , ILE B:112 , GLY B:114 , ALA B:115 , GLU B:116 , ILE B:117 , TYR B:118 , GLU B:120 , HOH B:231 , HOH B:322 , HOH B:323 , HOH B:343 , HOH B:350	BINDING SITE FOR RESIDUE NDP B 193

(no "SS Bond" information available for 1AI9)

Asymmetric/Biological Unit

No.	Residues
1	Lys A:14	-	Pro A:15
2	Arg A:67	-	Pro A:68
3	Gly A:113	-	Gly A:114
4	Lys B:14	-	Pro B:15
5	Arg B:67	-	Pro B:68
6	Gly B:113	-	Gly B:114

Asymmetric/Biological Unit (2, 4)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_DYR_CANAX_001 *	S	2	L	DYR_CANAX	---	---	A/B	L	2	L
2	UniProt	VAR_DYR_CANAX_002 *	K	84	E	DYR_CANAX	---	---	A/B	E	84	E
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Asymmetric/Biological Unit (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	DHFR_2	PS51330	Dihydrofolate reductase (DHFR) domain profile.	DYR_CANAX	5-191	2	A:5-191 B:5-191
2	DHFR_1	PS00075	Dihydrofolate reductase (DHFR) domain signature.	DYR_CANAX	18-40	2	A:18-40 B:18-40

(no "Exon" information available for 1AI9)

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:192
 aligned with DYR_CANAX | P22906 from UniProtKB/Swiss-Prot  Length:192

    Alignment length:192
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190  
            DYR_CANAX     1 MSKPNVAIIVAALKPALGIGYKGKMPWRLRKEIRYFKDVTTRTTKPNTRNAVIMGRKTWESIPQKFRPLPDRLNIILSRSYENKIIDDNIIHASSIESSLNLVSDVERVFIIGGAEIYNELINNSLVSHLLITEIEHPSPESIEMDTFLKFPLESWTKQPKSELQKFVGDTVLEDDIKEGDFTYNYTLWTRK 192
               SCOP domains d1ai9a_ A: Dihydrofolate reductases, eukaryotic type                                                                                                                                             SCOP domains
               CATH domains 1ai9A00 A:1-192 Dihydrofolate Reductase, subunit A                                                                                                                                               CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .....eeeeeeee................hhhhhhhhhhhh.........eeeeehhhhhh..hhh......eeeee......eeee..eeee..hhhhhhh......eeeee.hhhhhhhhh...eeeeeeeeeee...............hhheee..hhhhhhhh........eee..eeeeeeeeee. Sec.struct. author
                 SAPs(SNPs) -L---------------------------------------------------------------------------------E------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (1) ----DHFR_2  PDB: A:5-191 UniProt: 5-191                                                                                                                                                        - PROSITE (1)
                PROSITE (2) -----------------DHFR_1  PDB: A:18-40   -------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1ai9 A   1 MLKPNVAIIVAALKPALGIGYKGKMPWRLRKEIRYFKDVTTRTTKPNTRNAVIMGRKTWESIPQKFRPLPDRLNIILSRSYENEIIDDNIIHASSIESSLNLVSDVERVFIIGGAEIYNELINNSLVSHLLITEIEHPSPESIEMDTFLKFPLESWTKQPKSELQKFVGDTVLEDDIKEGDFTYNYTLWTRK 192
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190

Chain B from PDB  Type:PROTEIN  Length:192
 aligned with DYR_CANAX | P22906 from UniProtKB/Swiss-Prot  Length:192

    Alignment length:192
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190  
            DYR_CANAX     1 MSKPNVAIIVAALKPALGIGYKGKMPWRLRKEIRYFKDVTTRTTKPNTRNAVIMGRKTWESIPQKFRPLPDRLNIILSRSYENKIIDDNIIHASSIESSLNLVSDVERVFIIGGAEIYNELINNSLVSHLLITEIEHPSPESIEMDTFLKFPLESWTKQPKSELQKFVGDTVLEDDIKEGDFTYNYTLWTRK 192
               SCOP domains d1ai9b_ B: Dihydrofolate reductases, eukaryotic type                                                                                                                                             SCOP domains
               CATH domains 1ai9B00 B:1-192 Dihydrofolate Reductase, subunit A                                                                                                                                               CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .....eeeeeeee................hhhhhhhhhhhh........eeeeeehhhhh...hhh.....eeeeee............eeee..hhhhhh.......eeeee.hhhhhhh.....eeeeeeeeeee..hhh..........hhheee..hhhhhhhh........eee..eeeeeeeeee. Sec.struct. author
                 SAPs(SNPs) -L---------------------------------------------------------------------------------E------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (1) ----DHFR_2  PDB: B:5-191 UniProt: 5-191                                                                                                                                                        - PROSITE (1)
                PROSITE (2) -----------------DHFR_1  PDB: B:18-40   -------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1ai9 B   1 MLKPNVAIIVAALKPALGIGYKGKMPWRLRKEIRYFKDVTTRTTKPNTRNAVIMGRKTWESIPQKFRPLPDRLNIILSRSYENEIIDDNIIHASSIESSLNLVSDVERVFIIGGAEIYNELINNSLVSHLLITEIEHPSPESIEMDTFLKFPLESWTKQPKSELQKFVGDTVLEDDIKEGDFTYNYTLWTRK 192
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190

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 '\|'

Asymmetric/Biological Unit

Classes(

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Folds(

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Superfamilies( (-)

)

Families(

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Protein Domains( (-)

)

Organisms( (-)

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Class: Alpha and beta proteins (a/b) (23833)

Fold: Dihydrofolate reductase-like (332)

Superfamily: Dihydrofolate reductase-like (332)

Family: Dihydrofolate reductases (249)

Protein domain: Dihydrofolate reductases, eukaryotic type (120)

Yeast (Candida albicans) [TaxId: 5476] (17)

1a	d1ai9a_	A:
1b	d1ai9b_	B:

Asymmetric/Biological Unit

Classes(

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Architectures( (-)

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Topologies( (-)

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Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: Dihydrofolate Reductase, subunit A (200)

Homologous Superfamily: Dihydrofolate Reductase, subunit A (200)

Candida albicans. Organism_taxid: 5476. (1)

1a	1ai9A00	A:1-192
1b	1ai9B00	B:1-192

(no "Pfam Domain" information available for 1AI9)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,B (DYR_CANAX | P22906)

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: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: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.

Asymmetric/Biological Unit
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	Cis Peptide Bonds
		Arg A:67 - Pro A:68	[ RasMol ]
		Arg B:67 - Pro B:68	[ RasMol ]
		Gly A:113 - Gly A:114	[ RasMol ]
		Gly B:113 - Gly B:114	[ RasMol ]
		Lys A:14 - Pro A:15	[ RasMol ]
		Lys B:14 - Pro B:15	[ RasMol ]

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SS Bonds (0, 0)

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