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Title :   PHOSPHO-ASPARTYL INTERMEDIATE ANALOGUE OF APHA CLASS B ACID PHOSPHATASE/PHOSPHOTRANSFERASE

Authors :   R. Leone, V. Calderone, E. Cappelletti, M. Benvenuti, S. Mangani

Date :   21 Jun 06 (Deposition) - 04 Mar 08 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.50

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

Keywords :   Apha Class B Acid Phosphatase/Phosphotransferase, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :

PubMed: search
(for further references see the PDB file header)

Molecule 1 - CLASS B ACID PHOSPHATASE
	Chains	:	A, B
	EC Number	:	3.1.3.2
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	PATAC
	Expression System Strain	:	BL21 DE3
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Gene	:	APHA, NAPA
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	562

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

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 4)

No.	Name	Count	Type	Full Name
1	BFD	2	Mod. Amino Acid	ASPARTATE BERYLLIUM TRIFLUORIDE
2	MG	2	Ligand/Ion	MAGNESIUM ION

Biological Unit 1 (1, 4)

No.	Name	Count	Type	Full Name
1	BFD	4	Mod. Amino Acid	ASPARTATE BERYLLIUM TRIFLUORIDE
2	MG	-1	Ligand/Ion	MAGNESIUM ION

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ASP A:46 , ASP A:167 , HOH A:302 , HOH A:322	BINDING SITE FOR RESIDUE MG A 300
2	AC2	SOFTWARE	ASP B:46 , ASP B:167 , HOH B:306 , HOH B:340	BINDING SITE FOR RESIDUE MG B 300

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

Asymmetric Unit

No.	Residues
1	Ser A:2	-	Pro A:3
2	Lys A:194	-	Pro A:195
3	Lys B:194	-	Pro B:195

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

(no "PROSITE Motif" information available for 2HEG)

(no "Exon" information available for 2HEG)

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:211
 aligned with APHA_ECOLI | P0AE22 from UniProtKB/Swiss-Prot  Length:237

    Alignment length:211
                                    36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236 
           APHA_ECOLI    27 SPSPLNPGTNVARLAEQAPIHWVSVAQIENSLAGRPPMAVGFDIDDTVLFSSPGFWRGKKTFSPESEDYLKNPVFWEKMNNGWDEFSIPKEVARQLIDMHVRRGDAIFFVTGRSPTKTETVSKTLADNFHIPATNMNPVIFAGDKPGQNTKSQWLQDKNIRIFYGDSDNDITAARDVGARGIRILRASNSTYKPLPQAGAFGEEVIVNSEY 237
               SCOP domains d2hega_ A: Class B acid phosphatase, AphA                                                                                                                                                                           SCOP domains
               CATH domains 2hegA00 A:2-212  [code=3.40.50.1000, no name defined]                                                                                                                                                               CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........hhhhhhh....eeehhhhhhhhh......eeee......eehhhhhhhhhhhhh...hhhhhhhhhhhhhh.hhhhhheehhhhhhhhhhhhhhh.eeeeee........hhhhhhhhhhh.........ee.........hhhhhhhh.eeeeee.hhhhhhhhhhh..eeee....................eee..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2heg A   2 SPSPLNPGTNVARLAEQAPIHWVSVAQIENSLAGRPPMAVGFdIDDTVLFSSPGFWRGKKTFSPESEDYLKNPVFWEKMNNGWDEFSIPKEVARQLIDMHVRRGDAIFFVTGRSPTKTETVSKTLADNFHIPATNMNPVIFAGDKPGQNTKSQWLQDKNIRIFYGDSDNDITAARDVGARGIRILRASNSTYKPLPQAGAFGEEVIVNSEY 212
                                    11        21        31        41  |     51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211 
                                                                     44-BFD

Chain B from PDB  Type:PROTEIN  Length:211
 aligned with APHA_ECOLI | P0AE22 from UniProtKB/Swiss-Prot  Length:237

    Alignment length:211
                                    36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236 
           APHA_ECOLI    27 SPSPLNPGTNVARLAEQAPIHWVSVAQIENSLAGRPPMAVGFDIDDTVLFSSPGFWRGKKTFSPESEDYLKNPVFWEKMNNGWDEFSIPKEVARQLIDMHVRRGDAIFFVTGRSPTKTETVSKTLADNFHIPATNMNPVIFAGDKPGQNTKSQWLQDKNIRIFYGDSDNDITAARDVGARGIRILRASNSTYKPLPQAGAFGEEVIVNSEY 237
               SCOP domains d2hegb_ B: Class B acid phosphatase, AphA                                                                                                                                                                           SCOP domains
               CATH domains 2hegB00 B:2-212  [code=3.40.50.1000, no name defined]                                                                                                                                                               CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........hhhhhhh....eeehhhhhhhhh......eeee......eehhhhhhhhhhhhh...hhhhhhhhhhhhhh.hhhhhheehhhhhhhhhhhhhh..eeeeee........hhhhhhhhhhh.........ee........hhhhhhhhh.eeeeee.hhhhhhhhhhh..eeee....................eee..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2heg B   2 SPSPLNPGTNVARLAEQAPIHWVSVAQIENSLAGRPPMAVGFdIDDTVLFSSPGFWRGKKTFSPESEDYLKNPVFWEKMNNGWDEFSIPKEVARQLIDMHVRRGDAIFFVTGRSPTKTETVSKTLADNFHIPATNMNPVIFAGDKPGQNTKSQWLQDKNIRIFYGDSDNDITAARDVGARGIRILRASNSTYKPLPQAGAFGEEVIVNSEY 212
                                    11        21        31        41  |     51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211 
                                                                     44-BFD

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(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

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

Fold: HAD-like (349)

Superfamily: HAD-like (349)

Family: Class B acid phosphatase, AphA (15)

Protein domain: Class B acid phosphatase, AphA (15)

Escherichia coli [TaxId: 562] (11)

1a	d2hega_	A:
1b	d2hegb_	B:

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

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

Topology: Rossmann fold (7312)

Homologous Superfamily: [code=3.40.50.1000, no name defined] (211)

Escherichia coli. Organism_taxid: 562. (14)

1a	2hegA00	A:2-212
1b	2hegB00	B:2-212

(no "Pfam Domain" information available for 2HEG)

Asymmetric Unit(hide GO term definitions)

Chain A,B (APHA_ECOLI | P0AE22)

molecular function
	GO:0003993	acid phosphatase activity	Catalysis of the reaction: an orthophosphoric monoester + H2O = an alcohol + phosphate, with an acid pH optimum.
	GO:0048037	cofactor binding	Interacting selectively and non-covalently with a cofactor, a substance that is required for the activity of an enzyme or other protein. Cofactors may be inorganic, such as the metal atoms zinc, iron, and copper in certain forms, or organic, in which case they are referred to as coenzymes. Cofactors may either be bound tightly to active sites or bind loosely with the substrate.
	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.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0004647	phosphoserine phosphatase activity	Catalysis of the reaction: L(or D)-O-phosphoserine + H2O = L(or D)-serine + phosphate.
biological process
	GO:0016311	dephosphorylation	The process of removing one or more phosphoric (ester or anhydride) residues from a molecule.
cellular component
	GO:0030288	outer membrane-bounded periplasmic space	The region between the inner (cytoplasmic or plasma) membrane and outer membrane of organisms with two membranes such as Gram negative bacteria. These periplasmic spaces are relatively thick and contain a thin peptidoglycan layer (PGL), also referred to as a thin cell wall.
	GO:0042597	periplasmic space	The region between the inner (cytoplasmic) and outer membrane (Gram-negative Bacteria) or cytoplasmic membrane and cell wall (Fungi and Gram-positive Bacteria).

Asymmetric Unit
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	Cis Peptide Bonds
		Lys A:194 - Pro A:195	[ RasMol ]
		Lys B:194 - Pro B:195	[ RasMol ]
		Ser A:2 - Pro A:3	[ RasMol ]

Biological Unit
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	APHA_ECOLI \| P0AE22	:	1n8n 1n9k 1rmq 1rmt 1rmy 2b82 2b8j 2g1a 2hf7 3cz4

Description

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Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 4)

Sites (2, 2)

SS Bonds (0, 0)

Cis Peptide Bonds (3, 3)

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SAPs(SNPs)/Variants (0, 0)

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