1CHQ - JenaLib

Asym./Biol. Unit (Jmol Viewer)

Title :   SURPRISING LEADS FOR A CHOLERA TOXIN RECEPTOR BINDING ANTAGONIST; CRYSTALLOGRAPHIC STUDIES OF CTB MUTANTS

Authors :   E. A. Merritt, W. G. J. Hol

Date :   15 Feb 95 (Deposition) - 08 Mar 96 (Release) - 21 Jun 17 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.10

Chains :   Asym./Biol. Unit : D,E,F,G,H

Keywords :   Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   E. A. Merritt, S. Sarfaty, T. T. Chang, L. M. Palmer, M. G. Jobling, R. K. Holmes, W. G. Hol
Surprising Leads For A Cholera Toxin Receptor-Binding Antagonist: Crystallographic Studies Of Ctb Mutants.
Structure V. 3 561 1995
PubMed-ID: 8590017 | Reference-DOI: 10.1016/S0969-2126(01)00190-3
(for further references see the PDB file header)

Molecule 1 - CHOLERA TOXIN B PENTAMER
	Chains	:	D, E, F, G, H
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Mutation	:	YES
	Organism Scientific	:	VIBRIO CHOLERAE
	Organism Taxid	:	666
	Strain	:	OGAWA 41 (CLASSICAL)
	Synonym	:	CHOLERAGEN

		1	2	3	4	5
Asymmetric/Biological Unit	:	D	E	F	G	H

Summary Information (see also Sequences/Alignments below)

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

(no "Site" information available for 1CHQ)

Asymmetric/Biological Unit

No.	Residues
1	D:9	-	D:86
2	E:9	-	E:86
3	F:9	-	F:86
4	G:9	-	G:86
5	H:9	-	H:86

Asymmetric/Biological Unit

No.	Residues
1	Thr D:92	-	Pro D:93
2	Thr E:92	-	Pro E:93
3	Thr F:92	-	Pro F:93
4	Thr G:92	-	Pro G:93
5	Thr H:92	-	Pro H:93

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

(no "PROSITE Motif" information available for 1CHQ)

(no "Exon" information available for 1CHQ)

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 D from PDB  Type:PROTEIN  Length:103
 aligned with CHTB_VIBCH | P01556 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:103
                                    31        41        51        61        71        81        91       101       111       121   
           CHTB_VIBCH    22 TPQNITDLCAEYHNTQIYTLNDKIFSYTESLAGKREMAIITFKNGAIFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 124
               SCOP domains d1chqd_ D: Cholera toxin                                                                                SCOP domains
               CATH domains 1chqD00 D:1-103  [code=2.40.50.110, no name defined]                                                    CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhh.....eeeeeeee...eeeee......eeeee.....eeee........hhhhhhhhhhhhhhhhhhhh...eeeeeee.....eeeeeeeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------- Transcript
                 1chq D   1 TPQNITDLCAEYHNTQIHTLNDKIFSYTESLAGKDEMAIITFKNGATFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 103
                                    10        20        30        40        50        60        70        80        90       100

Chain E from PDB  Type:PROTEIN  Length:103
 aligned with CHTB_VIBCH | P01556 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:103
                                    31        41        51        61        71        81        91       101       111       121   
           CHTB_VIBCH    22 TPQNITDLCAEYHNTQIYTLNDKIFSYTESLAGKREMAIITFKNGAIFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 124
               SCOP domains d1chqe_ E: Cholera toxin                                                                                SCOP domains
               CATH domains 1chqE00 E:1-103  [code=2.40.50.110, no name defined]                                                    CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhh.....eeeeeeee...eeeee......eeeee.....eeee...........hhhhhhhhhhhhhhhhh...eeeeeee.....eeeeeeeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------- Transcript
                 1chq E   1 TPQNITDLCAEYHNTQIHTLNDKIFSYTESLAGKDEMAIITFKNGATFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 103
                                    10        20        30        40        50        60        70        80        90       100

Chain F from PDB  Type:PROTEIN  Length:103
 aligned with CHTB_VIBCH | P01556 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:103
                                    31        41        51        61        71        81        91       101       111       121   
           CHTB_VIBCH    22 TPQNITDLCAEYHNTQIYTLNDKIFSYTESLAGKREMAIITFKNGAIFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 124
               SCOP domains d1chqf_ F: Cholera toxin                                                                                SCOP domains
               CATH domains 1chqF00 F:1-103  [code=2.40.50.110, no name defined]                                                    CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhh.....eeeeeeee...eeeee......eeeee.....eeee........hhhhhhhhhhhhhhhhhhhh...eeeeeee.....eeeeeeeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------- Transcript
                 1chq F   1 TPQNITDLCAEYHNTQIHTLNDKIFSYTESLAGKDEMAIITFKNGATFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 103
                                    10        20        30        40        50        60        70        80        90       100

Chain G from PDB  Type:PROTEIN  Length:103
 aligned with CHTB_VIBCH | P01556 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:103
                                    31        41        51        61        71        81        91       101       111       121   
           CHTB_VIBCH    22 TPQNITDLCAEYHNTQIYTLNDKIFSYTESLAGKREMAIITFKNGAIFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 124
               SCOP domains d1chqg_ G: Cholera toxin                                                                                SCOP domains
               CATH domains 1chqG00 G:1-103  [code=2.40.50.110, no name defined]                                                    CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhh.....eeeeeeee...eeeee......eeeee.....eeee..........hhhhhhhhhhhhhhhhhh...eeeeeee.....eeeeeeeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------- Transcript
                 1chq G   1 TPQNITDLCAEYHNTQIHTLNDKIFSYTESLAGKDEMAIITFKNGATFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 103
                                    10        20        30        40        50        60        70        80        90       100

Chain H from PDB  Type:PROTEIN  Length:103
 aligned with CHTB_VIBCH | P01556 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:103
                                    31        41        51        61        71        81        91       101       111       121   
           CHTB_VIBCH    22 TPQNITDLCAEYHNTQIYTLNDKIFSYTESLAGKREMAIITFKNGAIFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 124
               SCOP domains d1chqh_ H: Cholera toxin                                                                                SCOP domains
               CATH domains 1chqH00 H:1-103  [code=2.40.50.110, no name defined]                                                    CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhh.....eeeeeeee...eeeee......eeeee.....eeee.........hhhhhhhhhhhhhhhhhhh...eeeeeee.....eeeeeeeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------- Transcript
                 1chq H   1 TPQNITDLCAEYHNTQIHTLNDKIFSYTESLAGKDEMAIITFKNGATFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN 103
                                    10        20        30        40        50        60        70        80        90       100

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: All beta proteins (24004)

Fold: OB-fold (1179)

Superfamily: Bacterial enterotoxins (188)

Family: Bacterial AB5 toxins, B-subunits (85)

Protein domain: Cholera toxin (24)

Vibrio cholerae [TaxId: 666] (24)

1a	d1chqd_	D:
1b	d1chqh_	H:
1c	d1chqe_	E:
1d	d1chqf_	F:
1e	d1chqg_	G:

Asymmetric/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Beta (13760)

Architecture: Beta Barrel (4804)

Topology: OB fold (Dihydrolipoamide Acetyltransferase, E2P) (1040)

Homologous Superfamily: [code=2.40.50.110, no name defined] (136)

Vibrio cholerae. Organism_taxid: 666. Strain: ogawa 41 (classical). (2)

1a	1chqD00	D:1-103
1b	1chqE00	E:1-103
1c	1chqF00	F:1-103
1d	1chqG00	G:1-103
1e	1chqH00	H:1-103

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

Asymmetric/Biological Unit(hide GO term definitions)

Chain D,E,F,G,H (CHTB_VIBCH | P01556)

molecular function
	GO:0046812	host cell surface binding	Interacting selectively and non-covalently with the surface of a host cell.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
biological process
	GO:0031640	killing of cells of other organism	Any process in an organism that results in the killing of cells of another organism, including in some cases the death of the other organism. Killing here refers to the induction of death in one cell by another cell, not cell-autonomous death due to internal or other environmental conditions.
	GO:0009405	pathogenesis	The set of specific processes that generate the ability of an organism to induce an abnormal, generally detrimental state in another organism.
	GO:0006471	protein ADP-ribosylation	The transfer, from NAD, of ADP-ribose to protein amino acids.
cellular component
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
	GO:0033644	host cell membrane	Double layer of lipid molecules as it encloses host cells, and, in eukaryotes, many organelles; may be a single or double lipid bilayer; also includes associated proteins. The host is defined as the larger of the organisms involved in a symbiotic interaction.
	GO:0020002	host cell plasma membrane	The plasma membrane surrounding a host cell.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

Asymmetric/Biological Unit
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	Ligands, Modified Residues, Ions
(no "Ligands, Modified Residues, Ions" information available for 1chq)

	Sites
(no "Sites" information available for 1chq)

	Cis Peptide Bonds
		Thr D:92 - Pro D:93	[ RasMol ]
		Thr E:92 - Pro E:93	[ RasMol ]
		Thr F:92 - Pro F:93	[ RasMol ]
		Thr G:92 - Pro G:93	[ RasMol ]
		Thr H:92 - Pro H:93	[ RasMol ]

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Description

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SS Bonds (5, 5)

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