1A2O - JenaLib

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Title :   STRUCTURAL BASIS FOR METHYLESTERASE CHEB REGULATION BY A PHOSPHORYLATION-ACTIVATED DOMAIN

Authors :   S. Djordjevic, P. N. Goudreau, Q. Xu, A. M. Stock, A. H. West

Date :   06 Jan 98 (Deposition) - 29 Apr 98 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.40

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

Keywords :   Bacterial Chemotaxis, Adaptation, Serine Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   S. Djordjevic, P. N. Goudreau, Q. Xu, A. M. Stock, A. H. West
Structural Basis For Methylesterase Cheb Regulation By A Phosphorylation-Activated Domain.
Proc. Natl. Acad. Sci. Usa V. 95 1381 1998
PubMed-ID: 9465023 | Reference-DOI: 10.1073/PNAS.95.4.1381
(for further references see the PDB file header)

Molecule 1 - CHEB METHYLESTERASE
	Cellular Location	:	CYTOPLASM
	Chains	:	A, B
	EC Number	:	3.1.1.61
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Cell	:	HB101
	Expression System Cellular Location	:	CYTOPLASM
	Expression System Plasmid	:	PME30
	Expression System Taxid	:	562
	Expression System Vector Type	:	BACTERIAL
	Organism Scientific	:	SALMONELLA TYPHIMURIUM
	Organism Taxid	:	602

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

Summary Information (see also Sequences/Alignments below)

(no "Ligand,Modified Residues,Ions" information available for 1A2O)

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	ESE	UNKNOWN	SER A:164 , HIS A:190 , ASP A:286	ESTERASE CATALYTIC TRIAD
2	PON	UNKNOWN	ASP A:56	PHOSPHORYLATION SITE

(no "SS Bond" information available for 1A2O)

Asymmetric Unit

No.	Residues
1	Arg A:257	-	Pro A:258

(no "SAP(SNP)/Variant" information available for 1A2O)

Asymmetric Unit (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	RESPONSE_REGULATORY	PS50110	Response regulatory domain profile.	CHEB_SALTY	5-122	2	A:5-122 B:5-122
2	CHEB	PS50122	CheB-type methylesterase domain profile.	CHEB_SALTY	152-344	2	A:152-344 B:152-344

Biological Unit 1 (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	RESPONSE_REGULATORY	PS50110	Response regulatory domain profile.	CHEB_SALTY	5-122	1	A:5-122 -
2	CHEB	PS50122	CheB-type methylesterase domain profile.	CHEB_SALTY	152-344	1	A:152-344 -

Biological Unit 2 (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	RESPONSE_REGULATORY	PS50110	Response regulatory domain profile.	CHEB_SALTY	5-122	1	- B:5-122
2	CHEB	PS50122	CheB-type methylesterase domain profile.	CHEB_SALTY	152-344	1	- B:152-344

(no "Exon" information available for 1A2O)

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:347
 aligned with CHEB_SALTY | P04042 from UniProtKB/Swiss-Prot  Length:349

    Alignment length:347
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       
           CHEB_SALTY     1 MSKIRVLSVDDSALMRQIMTEIINSHSDMEMVATAPDPLVARDLIKKFNPDVLTLDVEMPRMDGLDFLEKLMRLRPMPVVMVSSLTGKGSEVTLRALELGAIDFVTKPQLGIREGMLAYSEMIAEKVRTAARARIAAHKPMAAPTTLKAGPLLSSEKLIAIGASTGGTEAIRHVLQPLPLSSPAVIITQHMPPGFTRSFAERLNKLCQISVKEAEDGERVLPGHAYIAPGDKHMELARSGANYQIKIHDGPPVNRHRPSVDVLFHSVAKHAGRNAVGVILTGMGNDGAAGMLAMYQAGAWTIAQNEASCVVFGMPREAINMGGVSEVVDLSQVSQQMLAKISAGQAI 347
               SCOP domains d1a2oa1 A:1-140 Methylesterase CheB, N-terminal domain                                                                                      d1a2oa2 A:141-347 Methylesterase CheB, C-terminal domain                                                                                                                                                        SCOP domains
               CATH domains 1a2oA01 A:1-133  [code=3.40.50.2300, no name defined]                                                                                1a2oA02 A:134-347  [code=3.40.50.180, no name defined]                                                                                                                                                                 CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeee...hhhhhhhhhhhhh...eeeeeee..hhhhhhhhhhh...eeeee.......hhhhhhhhhh....eeeeee...hhhhhhhhhhhhh...eeee.........hhhhhhhhhhhhhhhhh..hhhh...................eeeeee...hhhhhhhhh........eeeeee.....hhhhhhhhhhhh...eeee..........eeee.....eeeeeee..eeeeeee...........hhhhhhhhhhh.hhheeeee........hhhhhhhhhh..eeeee.hhh....hhhhhhhhh....eee.hhhhhhhhhhhh...... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----RESPONSE_REGULATORY  PDB: A:5-122 UniProt: 5-122                                                                      -----------------------------CHEB  PDB: A:152-344 UniProt: 152-344                                                                                                                                                            --- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1a2o A   1 MSKIRVLSVDDSALMRQIMTEIINSHSDMEMVATAPDPLVARDLIKKFNPDVLTLDVEMPRMDGLDFLEKLMRLRPMPVVMVSSLTGKGSEVTLRALELGAIDFVTKPQLGIREGMLAYSEMIAEKVRTAARARIAAHKPMAAPTTLKAGPLLSSEKLIAIGASTGGTEAIRHVLQPLPLSSPAVIITQHMPPGFTRSFAERLNKLCQISVKEAEDGERVLPGHAYIAPGDKHMELARSGANYQIKIHDGPPVNRHRPSVDVLFHSVAKHAGRNAVGVILTGMGNDGAAGMLAMYQAGAWTIAQNEASCVVFGMPREAINMGGVSEVVDLSQVSQQMLAKISAGQAI 347
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340

Chain B from PDB  Type:PROTEIN  Length:347
 aligned with CHEB_SALTY | P04042 from UniProtKB/Swiss-Prot  Length:349

    Alignment length:347
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       
           CHEB_SALTY     1 MSKIRVLSVDDSALMRQIMTEIINSHSDMEMVATAPDPLVARDLIKKFNPDVLTLDVEMPRMDGLDFLEKLMRLRPMPVVMVSSLTGKGSEVTLRALELGAIDFVTKPQLGIREGMLAYSEMIAEKVRTAARARIAAHKPMAAPTTLKAGPLLSSEKLIAIGASTGGTEAIRHVLQPLPLSSPAVIITQHMPPGFTRSFAERLNKLCQISVKEAEDGERVLPGHAYIAPGDKHMELARSGANYQIKIHDGPPVNRHRPSVDVLFHSVAKHAGRNAVGVILTGMGNDGAAGMLAMYQAGAWTIAQNEASCVVFGMPREAINMGGVSEVVDLSQVSQQMLAKISAGQAI 347
               SCOP domains d1a2ob1 B:1-140 Methylesterase CheB, N-terminal domain                                                                                      d1a2ob2 B:141-347 Methylesterase CheB, C-terminal domain                                                                                                                                                        SCOP domains
               CATH domains 1a2oB01 B:1-133  [code=3.40.50.2300, no name defined]                                                                                1a2oB02 B:134-347  [code=3.40.50.180, no name defined]                                                                                                                                                                 CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeee...hhhhhhhhhhh.....eeeeeee..hhhhhhhhhhh...eeee........hhhhhhhhhhh...eeeeee....hhhhhhhhhhh....eeee.........hhhhhhhhhhhhhhhhh..hhhh...................eeeeee...hhhhhhhhh........eeeeee.....hhhhhhhhhh.....eeee..........eeee.....eeeeeee..eeeeeee...........hhhhhhhhhhh.hhheeeee........hhhhhhhhh...eeeee........hhhhhhhhh....eee.hhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----RESPONSE_REGULATORY  PDB: B:5-122 UniProt: 5-122                                                                      -----------------------------CHEB  PDB: B:152-344 UniProt: 152-344                                                                                                                                                            --- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1a2o B   1 MSKIRVLSVDDSALMRQIMTEIINSHSDMEMVATAPDPLVARDLIKKFNPDVLTLDVEMPRMDGLDFLEKLMRLRPMPVVMVSSLTGKGSEVTLRALELGAIDFVTKPQLGIREGMLAYSEMIAEKVRTAARARIAAHKPMAAPTTLKAGPLLSSEKLIAIGASTGGTEAIRHVLQPLPLSSPAVIITQHMPPGFTRSFAERLNKLCQISVKEAEDGERVLPGHAYIAPGDKHMELARSGANYQIKIHDGPPVNRHRPSVDVLFHSVAKHAGRNAVGVILTGMGNDGAAGMLAMYQAGAWTIAQNEASCVVFGMPREAINMGGVSEVVDLSQVSQQMLAKISAGQAI 347
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340

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(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

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

Topology: Rossmann fold (7312)

Homologous Superfamily: [code=3.40.50.180, no name defined] (2)

Salmonella typhimurium. Organism_taxid: 602. (1)

1a	1a2oA02	A:134-347
1b	1a2oB02	B:134-347

Homologous Superfamily: [code=3.40.50.2300, no name defined] (308)

Salmonella typhimurium. Organism_taxid: 602. (1)

2a	1a2oA01	A:1-133
2b	1a2oB01	B:1-133

(no "Pfam Domain" information available for 1A2O)

Asymmetric Unit(hide GO term definitions)

Chain A,B (CHEB_SALTY | P04042)

molecular function
	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:0000156	phosphorelay response regulator activity	Responds to a phosphorelay sensor to initiate a change in cell state or activity. The activity of the response regulator is regulated by transfer of a phosphate from a histidine residue in the sensor, to an aspartate residue in the response regulator. Many but not all response regulators act as transcriptional regulators to elicit a response.
	GO:0008984	protein-glutamate methylesterase activity	Catalysis of the reaction: protein L-glutamate O(5)-methyl ester + H2O = protein L-glutamate + methanol.
	GO:0004871	signal transducer activity	Conveys a signal across a cell to trigger a change in cell function or state. A signal is a physical entity or change in state that is used to transfer information in order to trigger a response.
biological process
	GO:0006935	chemotaxis	The directed movement of a motile cell or organism, or the directed growth of a cell guided by a specific chemical concentration gradient. Movement may be towards a higher concentration (positive chemotaxis) or towards a lower concentration (negative chemotaxis).
	GO:0000160	phosphorelay signal transduction system	A conserved series of molecular signals found in prokaryotes and eukaryotes; involves autophosphorylation of a histidine kinase and the transfer of the phosphate group to an aspartate that then acts as a phospho-donor to response regulator proteins.
	GO:0007165	signal transduction	The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

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	Ligands, Modified Residues, Ions
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		ESE	[ RasMol ]	+environment [ RasMol ]
		PON	[ RasMol ]	+environment [ RasMol ]

	Cis Peptide Bonds
		Arg A:257 - Pro A:258	[ RasMol ]

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Description

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SS Bonds (0, 0)

Cis Peptide Bonds (1, 1)

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