1B12 - JenaLib

Asymmetric Unit (Jmol Viewer)

Asym. Unit - sites (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Biological Unit 2 (Jmol Viewer)

Biological Unit 3 (Jmol Viewer)

Biological Unit 4 (Jmol Viewer)

Title :   CRYSTAL STRUCTURE OF TYPE 1 SIGNAL PEPTIDASE FROM ESCHERICHIA COLI IN COMPLEX WITH A BETA-LACTAM INHIBITOR

Authors :   M. Paetzel, R. Dalbey, N. C. J. Strynadka

Date :   24 Nov 99 (Deposition) - 10 Dec 99 (Release) - 09 May 12 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.95

Chains :   Asym. Unit : A,B,C,D
Biol. Unit 1: A  (1x)
Biol. Unit 2: B  (1x)
Biol. Unit 3: C  (1x)
Biol. Unit 4: D  (1x)

Keywords :   Serine Proteinase, Serine-Dependant Hydrolase, Signal Peptide Processing, Protein Translocation, Membrane Bound Proteinase, Membrane Protein, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. Paetzel, R. E. Dalbey, N. C. Strynadka
Crystal Structure Of A Bacterial Signal Peptidase In Comple With A Beta-Lactam Inhibitor.
Nature V. 396 186 1998
PubMed-ID: 9823901 | Reference-DOI: 10.1038/24196

Molecule 1 - SIGNAL PEPTIDASE I
	Cellular Location	:	PERIPLASM
	Chains	:	A, B, C, D
	EC Number	:	3.4.21.89
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Cellular Location	:	PERIPLASM
	Expression System Gene	:	LEPB
	Expression System Plasmid	:	PET 3B
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Fragment	:	CATALYTIC DOMAIN
	Gene	:	LEPB
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	469008
	Strain	:	BL21(DE3)
	Synonym	:	SPASE I, LEADER PEPTIDASE I

		1	2	3	4
Asymmetric Unit	:	A	B	C	D
Biological Unit 1 (1x)	:	A
Biological Unit 2 (1x)	:		B
Biological Unit 3 (1x)	:			C
Biological Unit 4 (1x)	:				D

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 5)

No.	Name	Count	Type	Full Name
1	1PN	4	Ligand/Ion	PROP-2-EN-1-YL (2S)-2-[(2S,3R)-3-(ACETYLOXY)-1-OXOBUTAN-2-YL]-2,3-DIHYDRO-1,3-THIAZOLE-4-CARBOXYLATE
2	PO4	1	Ligand/Ion	PHOSPHATE ION

Biological Unit 1 (1, 1)

No.	Name	Count	Type	Full Name
1	1PN	1	Ligand/Ion	PROP-2-EN-1-YL (2S)-2-[(2S,3R)-3-(ACETYLOXY)-1-OXOBUTAN-2-YL]-2,3-DIHYDRO-1,3-THIAZOLE-4-CARBOXYLATE
2	PO4	-1	Ligand/Ion	PHOSPHATE ION

Biological Unit 2 (2, 2)

No.	Name	Count	Type	Full Name
1	1PN	1	Ligand/Ion	PROP-2-EN-1-YL (2S)-2-[(2S,3R)-3-(ACETYLOXY)-1-OXOBUTAN-2-YL]-2,3-DIHYDRO-1,3-THIAZOLE-4-CARBOXYLATE
2	PO4	1	Ligand/Ion	PHOSPHATE ION

Biological Unit 3 (1, 1)

No.	Name	Count	Type	Full Name
1	1PN	1	Ligand/Ion	PROP-2-EN-1-YL (2S)-2-[(2S,3R)-3-(ACETYLOXY)-1-OXOBUTAN-2-YL]-2,3-DIHYDRO-1,3-THIAZOLE-4-CARBOXYLATE
2	PO4	-1	Ligand/Ion	PHOSPHATE ION

Biological Unit 4 (1, 1)

No.	Name	Count	Type	Full Name
1	1PN	1	Ligand/Ion	PROP-2-EN-1-YL (2S)-2-[(2S,3R)-3-(ACETYLOXY)-1-OXOBUTAN-2-YL]-2,3-DIHYDRO-1,3-THIAZOLE-4-CARBOXYLATE
2	PO4	-1	Ligand/Ion	PHOSPHATE ION

Asymmetric Unit (5, 5)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLU B:163 , ARG B:226 , HOH B:1053 , HOH B:1055 , HOH B:1066 , SER C:161 , GLU C:163 , ARG C:226	BINDING SITE FOR RESIDUE PO4 B 1002
2	AC2	SOFTWARE	ILE B:86 , PRO B:87 , SER B:88 , SER B:90 , TYR B:143 , ILE B:144 , LYS B:145 , SER B:278 , ALA B:279	BINDING SITE FOR RESIDUE 1PN B 1001
3	AC3	SOFTWARE	ILE C:86 , PRO C:87 , SER C:88 , SER C:90 , ASP C:142 , TYR C:143 , ILE C:144 , LYS C:145 , SER C:278 , ALA C:279 , HOH C:1048	BINDING SITE FOR RESIDUE 1PN C 1001
4	AC4	SOFTWARE	ILE A:86 , PRO A:87 , SER A:88 , SER A:90 , TYR A:143 , ILE A:144 , LYS A:145 , SER A:278 , ALA A:279	BINDING SITE FOR RESIDUE 1PN A 1001
5	AC5	SOFTWARE	ILE D:86 , PRO D:87 , SER D:88 , SER D:90 , ILE D:144 , LYS D:145 , SER D:278 , ALA D:279	BINDING SITE FOR RESIDUE 1PN D 1001

Asymmetric Unit

No.	Residues
1	A:170	-	A:176
2	B:170	-	B:176
3	C:170	-	C:176

Asymmetric Unit

No.	Residues
1	Met A:92	-	Pro A:93
2	Ile A:114	-	Tyr A:115
3	Met B:92	-	Pro B:93
4	Met C:92	-	Pro C:93
5	Trp C:310	-	Pro C:311
6	Met D:92	-	Pro D:93

(no "SAP(SNP)/Variant" information available for 1B12)

Asymmetric Unit (3, 12)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SPASE_I_1	PS00501	Signal peptidases I serine active site.	LEP_ECOLI	89-96	4	A:88-95 B:88-95 C:88-95 D:88-95
2	SPASE_I_2	PS00760	Signal peptidases I lysine active site.	LEP_ECOLI	146-158	4	A:145-157 B:145-157 C:145-157 D:145-157
3	SPASE_I_3	PS00761	Signal peptidases I signature 3.	LEP_ECOLI	269-282	4	A:268-281 B:268-281 C:268-281 D:268-281

Biological Unit 1 (3, 3)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SPASE_I_1	PS00501	Signal peptidases I serine active site.	LEP_ECOLI	89-96	1	A:88-95 - - -
2	SPASE_I_2	PS00760	Signal peptidases I lysine active site.	LEP_ECOLI	146-158	1	A:145-157 - - -
3	SPASE_I_3	PS00761	Signal peptidases I signature 3.	LEP_ECOLI	269-282	1	A:268-281 - - -

Biological Unit 2 (3, 3)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SPASE_I_1	PS00501	Signal peptidases I serine active site.	LEP_ECOLI	89-96	1	- B:88-95 - -
2	SPASE_I_2	PS00760	Signal peptidases I lysine active site.	LEP_ECOLI	146-158	1	- B:145-157 - -
3	SPASE_I_3	PS00761	Signal peptidases I signature 3.	LEP_ECOLI	269-282	1	- B:268-281 - -

Biological Unit 3 (3, 3)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SPASE_I_1	PS00501	Signal peptidases I serine active site.	LEP_ECOLI	89-96	1	- - C:88-95 -
2	SPASE_I_2	PS00760	Signal peptidases I lysine active site.	LEP_ECOLI	146-158	1	- - C:145-157 -
3	SPASE_I_3	PS00761	Signal peptidases I signature 3.	LEP_ECOLI	269-282	1	- - C:268-281 -

Biological Unit 4 (3, 3)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SPASE_I_1	PS00501	Signal peptidases I serine active site.	LEP_ECOLI	89-96	1	- - - D:88-95
2	SPASE_I_2	PS00760	Signal peptidases I lysine active site.	LEP_ECOLI	146-158	1	- - - D:145-157
3	SPASE_I_3	PS00761	Signal peptidases I signature 3.	LEP_ECOLI	269-282	1	- - - D:268-281

(no "Exon" information available for 1B12)

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:239
 aligned with LEP_ECOLI | P00803 from UniProtKB/Swiss-Prot  Length:324

    Alignment length:247
                                    87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317       
            LEP_ECOLI    78 RSFIYEPFQIPSGSMMPTLLIGDFILVEKFAYGIKDPIYQKTLIETGHPKRGDIVVFKYPEDPKLDYIKRAVGLPGDKVTYDPVSKELTIQPGCSSGQACENALPVTYSNVEPSDFVQTFSRRNGGEATSGFFEVPKNETKENGIRLSERKETLGDVTHRILTVPIAQDQVGMYYQQPGQQLATWIVPPGQYFMMGDNRDNSADSRYWGFVPEANLVGRATAIWMSFDKQEGEWPTGLRLSRIGGIH 324
               SCOP domains d1b12a_ A: Type 1 signal peptidase                                                                                                                                                                                                                      SCOP domains
               CATH domains 1b12A01 A:77-153,A:263-323 Umud Fragment, subunit A                          1b12A02 A:154-188,A:224-262        -----------------------------------1b12A02 A:154-188,A:224-262            1b12A01 A:77-153,A:263-323 Umud Fragment,         subunit A   CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeee.............eeeeeee.eeeee.hhhh.eeeee.......eeeee.......eeeeeeee....eeeee....eeeee..............eee...eeeeeeeeeehhhhh.eeeeeee.........eeeeeeeeeee..eeeeeee......hhhhh.........eee....eeeee........hhhhhh.ee...eeeeeeeeeee..--------..hhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------SPASE_I_-------------------------------------------------SPASE_I_2    --------------------------------------------------------------------------------------------------------------SPASE_I_3     ------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1b12 A  77 RSFIYEPFQIPSGSMMPTLLIGDFILVEKFAYGIKDPIYQKTLIETGHPKRGDIVVFKYPEDPKLDYIKRAVGLPGDKVTYDPVSKELTIQPGCSSGQACENALPVTYSNVEPSDFVQTFSRRNGGEATSGFFEVPKNETKENGIRLSERKETLGDVTHRILTVPIAQDQVGMYYQQPGQQLATWIVPPGQYFMMGDNRDNSADSRYWGFVPEANLVGRATAIWMSFD--------GLRLSRIGGIH 323
                                    86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256       266       276       286       296       | -      |316       
                                                                                                                                                                                                                                                             304      313

Chain B from PDB  Type:PROTEIN  Length:211
 aligned with LEP_ECOLI | P00803 from UniProtKB/Swiss-Prot  Length:324

    Alignment length:245
                                    89        99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279       289       299       309       319     
            LEP_ECOLI    80 FIYEPFQIPSGSMMPTLLIGDFILVEKFAYGIKDPIYQKTLIETGHPKRGDIVVFKYPEDPKLDYIKRAVGLPGDKVTYDPVSKELTIQPGCSSGQACENALPVTYSNVEPSDFVQTFSRRNGGEATSGFFEVPKNETKENGIRLSERKETLGDVTHRILTVPIAQDQVGMYYQQPGQQLATWIVPPGQYFMMGDNRDNSADSRYWGFVPEANLVGRATAIWMSFDKQEGEWPTGLRLSRIGGIH 324
               SCOP domains d1b12b_ B: Type 1 signal pep                tidase                                                                                                                                                                                                    SCOP domains
               CATH domains 1b12B01 B:79-153,B:263-319 U                mud Fragment, subunit A        1b12B02 B:154-188     ,B:224-262   ----------    ---------------------1b12B02 B:154-188,B:224-262            1b12B01 B:79-153,B:263-319 Umud Fragment,          subuni---- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .ee.................eeeeeee.----------------.......eeeee.......eeeeeeee....eeeee....eeeee...-----......eee...eeeeeeeeee.----..eeeeee..........eeeeeeeeee..eeeeeee......hhhhh.........eee....eeeee........hhhhhh.ee...eeeeeeeeeee..---------.hhhhhee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------SPASE_I_-------------------------------------------------SPASE_I_2    --------------------------------------------------------------------------------------------------------------SPASE_I_3     ------------------------------------------ PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1b12 B  79 FIYEPFQIPSGSMMPTLLIGDFILVEKF----------------GHPKRGDIVVFKYPEDPKLDYIKRAVGLPGDKVTYDPVSKELTIQPGC-----CENALPVTYSNVEPSDFVQTFSR----EATSGFFEVPKNETKENGIRLSERKETLGDVTHRILTVPIAQDQVGMYYQQPGQQLATWIVPPGQYFMMGDNRDNSADSRYWGFVPEANLVGRATAIWMSFD---------LRLSRIGGIH 323
                                    88        98       | -         -    |  128       138       148       158       168 |     178       188       198    |  208       218       228       238       248       258       268       278       288       298     |   -     | 318     
                                                     106              123                                            170   176                   198  203                                                                                                  304       314

Chain C from PDB  Type:PROTEIN  Length:226
 aligned with LEP_ECOLI | P00803 from UniProtKB/Swiss-Prot  Length:324

    Alignment length:246
                                    88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268       278       288       298       308       318      
            LEP_ECOLI    79 SFIYEPFQIPSGSMMPTLLIGDFILVEKFAYGIKDPIYQKTLIETGHPKRGDIVVFKYPEDPKLDYIKRAVGLPGDKVTYDPVSKELTIQPGCSSGQACENALPVTYSNVEPSDFVQTFSRRNGGEATSGFFEVPKNETKENGIRLSERKETLGDVTHRILTVPIAQDQVGMYYQQPGQQLATWIVPPGQYFMMGDNRDNSADSRYWGFVPEANLVGRATAIWMSFDKQEGEWPTGLRLSRIGGIH 324
               SCOP domains d1b12c_ C: Type 1 signal pepti              dase                                                                                                                                                                                                       SCOP domains
               CATH domains 1b12C01 C:78-153,C:263-321 Umu              d Fragment, subunit A           1b12C02 C:154-188,C:224-262        ---------      --------------------1b12C02 C:154-188,C:224-262            1b12C01 C:78-153,C:263-321 Umud Fragment, subunit A        -- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eee.................eeeeeee..--------------........eeeee.......eeeeeeee....eeeee....eeeee..............eee...eeeeeeeee.------..eeeee..........eeeeeeeeee..eeeeeee......hhhhh.........eee....eeeee........hhhhhh.ee...eeeeeeeeeee............hhhhhee.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ----------SPASE_I_-------------------------------------------------SPASE_I_2    --------------------------------------------------------------------------------------------------------------SPASE_I_3     ------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1b12 C  78 SFIYEPFQIPSGSMMPTLLIGDFILVEKFA--------------TGHPKRGDIVVFKYPEDPKLDYIKRAVGLPGDKVTYDPVSKELTIQPGCSSGQACENALPVTYSNVEPSDFVQTFS------ATSGFFEVPKNETKENGIRLSERKETLGDVTHRILTVPIAQDQVGMYYQQPGQQLATWIVPPGQYFMMGDNRDNSADSRYWGFVPEANLVGRATAIWMSFDKQEGEWPTGLRLSRIGGIH 323
                                    87        97       107         -    |  127       137       147       157       167       177       187       197      |207       217       227       237       247       257       267       277       287       297       307       317      
                                                       107            122                                                                        197    204

Chain D from PDB  Type:PROTEIN  Length:222
 aligned with LEP_ECOLI | P00803 from UniProtKB/Swiss-Prot  Length:324

    Alignment length:247
                                    87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317       
            LEP_ECOLI    78 RSFIYEPFQIPSGSMMPTLLIGDFILVEKFAYGIKDPIYQKTLIETGHPKRGDIVVFKYPEDPKLDYIKRAVGLPGDKVTYDPVSKELTIQPGCSSGQACENALPVTYSNVEPSDFVQTFSRRNGGEATSGFFEVPKNETKENGIRLSERKETLGDVTHRILTVPIAQDQVGMYYQQPGQQLATWIVPPGQYFMMGDNRDNSADSRYWGFVPEANLVGRATAIWMSFDKQEGEWPTGLRLSRIGGIH 324
               SCOP domains d1b12d_ D: Type 1 signal peptidase                                                                                                                                                                                                                      SCOP domains
               CATH domains 1b12D01 D:77-153,D:263-320 Umud Fragment, subunit A                          1b12D02 D:154-1          88,D:224-2---------       -------------------1b12D02 D:154-188,D:224-262            1b12D01 D:77-153,D:263-320 Umud Fragment,         subunit --- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeee.............eeeeeee.eeeee......eeeee.......eeeee.......eeeeeeee....eeeee....eeeee.----------...eee...eeeeeeee..-------..eeee.........eeeeeeeeeee..eeeeeee......hhhhh.........eee....eeeee........hhhhhh.ee...eeeeeeeeeee..--------..hhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------SPASE_I_-------------------------------------------------SPASE_I_2    --------------------------------------------------------------------------------------------------------------SPASE_I_3     ------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1b12 D  77 RSFIYEPFQIPSGSMMPTLLIGDFILVEKFAYGIKDPIYQKTLIETGHPKRGDIVVFKYPEDPKLDYIKRAVGLPGDKVTYDPVSKELTIQP----------ALPVTYSNVEPSDFVQTFS-------TSGFFEVPKNETKENGIRLSERKETLGDVTHRILTVPIAQDQVGMYYQQPGQQLATWIVPPGQYFMMGDNRDNSADSRYWGFVPEANLVGRATAIWMSFD--------GLRLSRIGGIH 323
                                    86        96       106       116       126       136       146       156       166 |       -  |    186       196|      206       216       226       236       246       256       266       276       286       296       | -      |316       
                                                                                                                     168        179               197     205                                                                                                304      313

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: All beta proteins (24004)

Fold: LexA/Signal peptidase (17)

Superfamily: LexA/Signal peptidase (17)

Family: Type 1 signal peptidase (5)

Protein domain: Type 1 signal peptidase (5)

Escherichia coli [TaxId: 562] (5)

1a	d1b12a_	A:
1b	d1b12b_	B:
1c	d1b12c_	C:
1d	d1b12d_	D:

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Beta (13760)

Architecture: Beta Complex (381)

Topology: Signal Peptidase I; Chain: A, domain 2 (4)

Homologous Superfamily: [code=2.170.230.10, no name defined] (4)

Escherichia coli bl21(de3). Organism_taxid: 469008. Strain: bl21(de3). (1)

1a	1b12A02	A:154-188,A:224-262
1b	1b12C02	C:154-188,C:224-262
1c	1b12B02	B:154-188,B:224-262
1d	1b12D02	D:154-188,D:224-262

Architecture: Ribbon (789)

Topology: Umud Fragment, subunit A (13)

Homologous Superfamily: Umud Fragment, subunit A (13)

Escherichia coli bl21(de3). Organism_taxid: 469008. Strain: bl21(de3). (1)

2a	1b12B01	B:79-153,B:263-319
2b	1b12C01	C:78-153,C:263-321
2c	1b12D01	D:77-153,D:263-320
2d	1b12A01	A:77-153,A:263-323

(no "Pfam Domain" information available for 1B12)

Asymmetric Unit(hide GO term definitions)

Chain A,B,C,D (LEP_ECOLI | P00803)

molecular function
	GO:0004175	endopeptidase activity	Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain.
	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:0008233	peptidase activity	Catalysis of the hydrolysis of a peptide bond. A peptide bond is a covalent bond formed when the carbon atom from the carboxyl group of one amino acid shares electrons with the nitrogen atom from the amino group of a second amino acid.
	GO:0004252	serine-type endopeptidase activity	Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
	GO:0008236	serine-type peptidase activity	Catalysis of the hydrolysis of peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
	GO:0015643	toxic substance binding	Interacting selectively and non-covalently with a toxic substance, a poisonous substance that causes damage to biological systems.
biological process
	GO:0016485	protein processing	Any protein maturation process achieved by the cleavage of a peptide bond or bonds within a protein. Protein maturation is the process leading to the attainment of the full functional capacity of a protein.
	GO:0006508	proteolysis	The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
	GO:0006465	signal peptide processing	The proteolytic removal of a signal peptide from a protein during or after transport to a specific location in the cell.
cellular component
	GO:0016021	integral component of membrane	The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0005887	integral component of plasma membrane	The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005886	plasma membrane	The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Asymmetric Unit
	Complete Structure
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	Ligands, Modified Residues, Ions
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		PO4	[ RasMol \| Jena3D ]	+environment [ RasMol \| Jena3D ]

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		AC2	[ RasMol ]	+environment [ RasMol ]
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		AC4	[ RasMol ]	+environment [ RasMol ]
		AC5	[ RasMol ]	+environment [ RasMol ]

	Cis Peptide Bonds
		Ile A:114 - Tyr A:115	[ RasMol ]
		Met A:92 - Pro A:93	[ RasMol ]
		Met B:92 - Pro B:93	[ RasMol ]
		Met C:92 - Pro C:93	[ RasMol ]
		Met D:92 - Pro D:93	[ RasMol ]
		Trp C:310 - Pro C:311	[ RasMol ]

Biological Units
	Complete Structure
		Biological Unit 1	[ Jena3D ]
		Biological Unit 2	[ Jena3D ]
		Biological Unit 3	[ Jena3D ]
		Biological Unit 4	[ Jena3D ]

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	1b12
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	3.4.21.89
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	LEP_ECOLI \| P00803	:	1kn9 1t7d 3iiq 3s04

(no "Related Entries Specified in the PDB File" available for 1B12)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 5)

Sites (5, 5)

SS Bonds (3, 3)

Cis Peptide Bonds (6, 6)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (3, 12)

Exons (0, 0)

Sequences/Alignments

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SCOP Domains (1, 4)

CATH Domains (2, 8)

Pfam Domains (0, 0)

Gene Ontology (13, 13)

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Related Entries Specified in the PDB File