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Asym./Biol. Unit (Jmol Viewer)

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Title :   ROOM TEMPERATURE X-RAY STRUCTURE OF THE PERDEUTERATED TOHO-1 R274N R276N DOUBLE MUTANT BETA-LACTAMASE

Authors :   S. J. Tomanicek, K. K. Wang, K. L. Weiss, M. P. Blakeley, J. Cooper, Y. Che L. Coates

Date :   08 Sep 10 (Deposition) - 22 Dec 10 (Release) - 16 Feb 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.20

Chains :   Asym./Biol. Unit : A

Keywords :   Hydrolase, Extended-Spectrum Beta-Lactamases, Esbls, Ctx-M-Type Esbls (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   S. J. Tomanicek, K. K. Wang, K. L. Weiss, M. P. Blakeley, J. Cooper, Y. Chen, L. Coates
The Active Site Protonation States Of Perdeuterated Toho-1 Beta-Lactamase Determined By Neutron Diffraction Support A Role For Glu166 As The General Base In Acylation.
Febs Lett. V. 585 364 2011
PubMed-ID: 21168411 | Reference-DOI: 10.1016/J.FEBSLET.2010.12.017

Molecule 1 - TOHO-1 BETA-LACTAMASE
	Chains	:	A
	EC Number	:	3.5.2.6
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Strain	:	BL21
	Expression System Taxid	:	511693
	Expression System Vector	:	PJEXPRESS 401
	Expression System Vector Type	:	PLASMID
	Fragment	:	RESIDUES 32-291
	Mutation	:	YES
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	562
	Other Details	:	FULLY PERDEUTERATED

		1
Asymmetric/Biological Unit	:	A

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (1, 3)

No.	Name	Count	Type	Full Name
1	SO4	3	Ligand/Ion	SULFATE ION

Asymmetric Unit (3, 3)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	TRP A:229 , PRO A:252 , GLU A:254 , ASN A:255 , HIS A:256 , PHE A:290	BINDING SITE FOR RESIDUE SO4 A1291
2	AC2	SOFTWARE	SER A:70 , SER A:130 , LYS A:234 , THR A:235 , SER A:237 , HOH A:2149 , HOH A:2151 , HOH A:2152	BINDING SITE FOR RESIDUE SO4 A1292
3	AC3	SOFTWARE	ARG A:178 , HOH A:2153 , HOH A:2154	BINDING SITE FOR RESIDUE SO4 A1293

(no "SS Bond" information available for 2XR0)

Asymmetric/Biological Unit

No.	Residues
1	Glu A:166	-	Pro A:167

(no "SAP(SNP)/Variant" information available for 2XR0)

Asymmetric/Biological Unit (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	BETA_LACTAMASE_A	PS00146	Beta-lactamase class-A active site.	BLT1_ECOLX	69-84	1	A:66-81

(no "Exon" information available for 2XR0)

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:260
 aligned with BLT1_ECOLX | Q47066 from UniProtKB/Swiss-Prot  Length:291

    Alignment length:260
                                    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
           BLT1_ECOLX    32 SVQQQLEALEKSSGGRLGVALINTADNSQILYRADERFAMCSTSKVMAAAAVLKQSESDKHLLNQRVEIKKSDLVNYNPIAEKHVNGTMTLAELGAAALQYSDNTAMNKLIAHLGGPDKVTAFARSLGDETFRLDRTEPTLNTAIPGDPRDTTTPLAMAQTLKNLTLGKALAETQRAQLVTWLKGNTTGSASIRAGLPKSWVVGDKTGSGDYGTTNDIAVIWPENHAPLVLVTYFTQPEQKAERRRDILAAAAKIVTHGF 291
               SCOP domains d2xr0a_ A: beta-Lactamase, class A                                                                                                                                                                                                                                   SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -----------------------Beta-lactamase2-2xr0A01 A:51-263                                                                                                                                                                                  --------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhh.eeeeeeee.....eeee.....ee.hhhhhhhhhhhhhhhhh...hhhh.eee.hhhhh.....hhhhhh..eeehhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhh...........hhhhh........eehhhhhhhhhhhhhhh...hhhhhhhhhhhhhh......hhhhhh....eeeeeeee.....eeeeeeee......eeeeeeee........hhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------BETA_LACTAMASE_A--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2xr0 A  28 SVQQQLEALEKSSGGRLGVALINTADNSQILYRADERFAMCSTSKVMAAAAVLKQSESDKHLLNQRVEIKKSDLVNYNPIAEKHVNGTMTLAELGAAALQYSDNTAMNKLIAHLGGPDKVTAFARSLGDETFRLDRTEPTLNTAIPGDPRDTTTPLAMAQTLKNLTLGKALAETQRAQLVTWLKGNTTGSASIRAGLPKSWVVGDKTGSGDYGTTNDIAVIWPENHAPLVLVTYFTQPEQKAENRNDILAAAAKIVTHGF 290
                                    37        47        57|       68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238|      249  ||   260       270       280       290
                                                        57|                                                                                                                                                                                238|         252|                                    
                                                         59                                                                                                                                                                                 240          254

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(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Multi-domain proteins (alpha and beta) (2421)

Fold: beta-lactamase/transpeptidase-like (515)

Superfamily: beta-lactamase/transpeptidase-like (515)

Family: beta-Lactamase/D-ala carboxypeptidase (411)

Protein domain: beta-Lactamase, class A (131)

Escherichia coli, TOHO-1 [TaxId: 562] (17)

d2xr0a_

(no "CATH Domain" information available for 2XR0)

Asymmetric/Biological Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: Beta-lactamase (210)

Family: Beta-lactamase2 (75)

Escherichia coli (42)

Beta-lactamase2-2xr0A01

A:51-263

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (BLT1_ECOLX | Q47066)

molecular function
	GO:0008800	beta-lactamase activity	Catalysis of the reaction: a beta-lactam + H2O = a substituted beta-amino acid.
	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.
biological process
	GO:0030655	beta-lactam antibiotic catabolic process	The chemical reactions and pathways resulting in the breakdown of a beta-lactam antibiotic, any member of a class of natural or semisynthetic antibiotics whose characteristic feature is a strained, four-membered beta-lactam ring. They include the penicillins and many of the cephalosporins.
	GO:0046677	response to antibiotic	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an antibiotic stimulus. An antibiotic is a chemical substance produced by a microorganism which has the capacity to inhibit the growth of or to kill other microorganisms.

Asymmetric/Biological Unit
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	Cis Peptide Bonds
		Glu A:166 - Pro A:167	[ RasMol ]

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1bza	BETA-LACTAMASE TOHO-1 FROM ESCHERICHIA COLI TUH12191
1iyo	TOHO-1 BETA-LACTAMASE IN COMPLEX WITH CEFOTAXIME
1iyp	TOHO-1 BETA-LACTAMASE IN COMPLEX WITH CEPHALOTHIN
1iyq	TOHO-1 BETA-LACTAMASE IN COMPLEX WITH BENZYLPENICILLIN
1iys	CRYSTAL STRUCTURE OF CLASS A BETA-LACTAMASE TOHO-1
1we4	CRYSTAL STRUCTURE OF CLASS A BETA-LACTAMASE TOHO-1 G238CMUTANT
2wyx	NEUTRON STRUCTURE OF A CLASS A BETA- LACTAMASE TOHO-1 E166A R274N R276N TRIPLE MUTANT
2xqz	NEUTRON STRUCTURE OF THE PERDEUTERATED TOHO- 1 R274N R276N DOUBLE MUTANT BETA-LACTAMASE

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 3)

Sites (3, 3)

SS Bonds (0, 0)

Cis Peptide Bonds (1, 1)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (1, 1)

Exons (0, 0)

Sequences/Alignments

Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (0, 0)

Pfam Domains (1, 1)

Gene Ontology (4, 4)

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