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Title :   STRUCTURE OF A 37-FOLD MUTANT OF HALOHYDRIN DEHALOGENASE (HHEC) BOUND TO ETHYL (R)-4-CYANO-3-HYDROXYBUTYRATE

Authors :   R. J. Floor, M. Schallmey, B. Hauer, M. Breuer, P. A Jekel, H. J. Wijma, B. W. Dijkstra, D. B. Janssen

Date :   28 Jan 13 (Deposition) - 20 Feb 13 (Release) - 15 May 13 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.49

Chains :   Asym. Unit : A,B
Biol. Unit 1: A,B  (2x)

Keywords :   Thermostability, Synergistic Mutations, Coupled Mutations, Proline- Induced, Backbone Changes, Enantioselectivity Changes, Directed Evolution, Protein Engineering, Short-Chain Dehydrogenase/Reductase Enzyme Superfamily, Cyanolysis, Dehalogenase, Atorvastatin Synthesis, Lyase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. Schallmey, R. J. Floor, B. Hauer, M. Breuer, P. A. Jekel, H. J. Wijma, B. W. Dijkstra, D. B. Janssen
Biocatalytic And Structural Properties Of A Highly Engineered Halohydrin Dehalogenase.
Chembiochem V. 14 870 2013
PubMed-ID: 23585096 | Reference-DOI: 10.1002/CBIC.201300005

Molecule 1 - HALOHYDRIN DEHALOGENASE
	Chains	:	A, B
	EC Number	:	4.5.1.-
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PBAD-HHEC-2360
	Expression System Strain	:	BL21
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PBAD
	Fragment	:	HALOHYDRIN DEHALOGENASE HHEC
	Gene	:	HHEC
	Mutation	:	YES
	Organism Common	:	AGROBACTERIUM TUMEFACIENS
	Organism Scientific	:	RHIZOBIUM RADIOBACTER
	Organism Taxid	:	358
	Other Details	:	THIS ENZYME IS A RESULT OF A DIRECTED EVOLUTION STUDY. IT CONTAINS 37 MUTATIONS, COMPARED TO ITS PARENT

		1	2
Asymmetric Unit	:	A	B
Biological Unit 1 (2x)	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 2)

No.	Name	Count	Type	Full Name
1	1H1	1	Ligand/Ion	ETHYL (3R)-4-CYANO-3-HYDROXYBUTANOATE
2	CL	1	Ligand/Ion	CHLORIDE ION

Biological Unit 1 (1, 2)

No.	Name	Count	Type	Full Name
1	1H1	2	Ligand/Ion	ETHYL (3R)-4-CYANO-3-HYDROXYBUTANOATE
2	CL	-1	Ligand/Ion	CHLORIDE ION

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	PHE A:12 , SER A:132 , ALA A:134 , TRP A:139 , LEU A:142 , TYR A:145 , PRO A:175 , ASN A:176 , GLY A:177 , VAL A:178 , TYR A:187 , TRP A:249 , HOH A:403	BINDING SITE FOR RESIDUE 1H1 A 301
2	AC2	SOFTWARE	ASN B:176 , GLY B:177 , VAL B:178	BINDING SITE FOR RESIDUE CL B 301

(no "SS Bond" information available for 4IXT)

Asymmetric Unit

No.	Residues
1	Tyr A:185	-	Tyr A:186
2	Glu A:190	-	Pro A:191
3	Phe A:243	-	Pro A:244
4	Tyr B:185	-	Tyr B:186
5	Glu B:190	-	Pro B:191
6	Phe B:243	-	Pro B:244

(no "SAP(SNP)/Variant" information available for 4IXT)

(no "PROSITE Motif" information available for 4IXT)

(no "Exon" information available for 4IXT)

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:249
                                                                                                                                                                                                                                                                                         
               SCOP domains d4ixta_ A: automated matches                                                                                                                                                                                                                              SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeee......hhhhhhhhhhhhh.eeee.hhhhhhhhhhhhhhhhh...ee....hhhhhhhhhhhhhh...eeeee........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..eeeee.hhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhh..eeeeee............hhhhhh.hhhhhhhhhhhh......hhhhhhhhhhhhhh..hhhhh..eeee........... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4ixt A   2 STAIVTNVKHFGGMGSALRLSEAGHTVACHDESFKHQDELEAFAETYPQLIPMSEQEPVELIEAVTSALGHVDILVSNDIAPVEWRPIDKYAVEDYRDMVEALQIKPFALANAVASQMKRRKSGHIIFITSAASFGPWKELSTYASARAGASALANALSKELGEHNIPVFAIAPNGVDSGDSPYYYPSEPWKTSPEHVAWVRKYTALQRLGTQKELGELVTFLASGSCDYLTGQVFWLAGGFPVVERWP 250
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241

Chain B from PDB  Type:PROTEIN  Length:245
                                                                                                                                                                                                                                                                                     
               SCOP domains d4ixtb_ B: automated matches                                                                                                                                                                                                                          SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeee......hhhhhhhhhhhh..eeee.hhhhhhhhhhhhhhhhh..eee....hhhhhhhhhhhhhh...eeeee........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eeeee...........hhhhhhhhhhhhhhhhhhhhhhhhhh..eeeeee............hhhhhh.hhhhhhhhhhhh......hhhhhhhhhhhhhh..hhhhh..eeee....... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4ixt B   2 STAIVTNVKHFGGMGSALRLSEAGHTVACHDESFKHQDELEAFAETYPQLIPMSEQEPVELIEAVTSALGHVDILVSNDIAPVEWRPIDKYAVEDYRDMVEALQIKPFALANAVASQMKRRKSGHIIFITSAASFGPWKELSTYASARAGASALANALSKELGEHNIPVFAIAPNGVDSGDSPYYYPSEPWKTSPEHVAWVRKYTALQRLGTQKELGELVTFLASGSCDYLTGQVFWLAGGFPVV 246
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241

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 Unit

Classes(

)

Folds(

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Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

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

Fold: NAD(P)-binding Rossmann-fold domains (1604)

Superfamily: NAD(P)-binding Rossmann-fold domains (1604)

Family: Tyrosine-dependent oxidoreductases (503)

Protein domain: automated matches (114)

Rhizobium radiobacter [TaxId: 358] (3)

1a	d4ixta_	A:
1b	d4ixtb_	B:

(no "CATH Domain" information available for 4IXT)

(no "Pfam Domain" information available for 4IXT)

Asymmetric Unit(hide GO term definitions)

(no "Gene Ontology" information available for 4IXT)

Asymmetric Unit
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	Ligands, Modified Residues, Ions
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	Sites
		AC1	[ RasMol ]	+environment [ RasMol ]
		AC2	[ RasMol ]	+environment [ RasMol ]

	Cis Peptide Bonds
		Glu A:190 - Pro A:191	[ RasMol ]
		Glu B:190 - Pro B:191	[ RasMol ]
		Phe A:243 - Pro A:244	[ RasMol ]
		Phe B:243 - Pro B:244	[ RasMol ]
		Tyr A:185 - Tyr A:186	[ RasMol ]
		Tyr B:185 - Tyr B:186	[ RasMol ]

Biological Unit
	Complete Structure
		Biological Unit 1	[ Jena3D ]

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	Q93D82_RHIRD \| Q93D82	:	1pwx 1pwz 1px0 1zmt 1zo8 3zn2 4ixw 4iy1 5kvc 5kwe

4ixw	HHEC 2360 BOUND TO ETHYL (2S)-OXIRAN-2-YLACETATE
4iy1	STRUCTURE OF A 37-FOLD MUTANT OF HALOHYDRIN DEHALOGENASE (HHEC) WITH CHLORIDE BOUND

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 2)

Sites (2, 2)

SS Bonds (0, 0)

Cis Peptide Bonds (6, 6)

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