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1LTT
Asym. Unit
Info
Asym.Unit (137 KB)
Biol.Unit 1 (131 KB)
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(1)
Title
:
LACTOSE BINDING TO HEAT-LABILE ENTEROTOXIN REVEALED BY X-RAY CRYSTALLOGRAPHY
Authors
:
T. K. Sixma, W. G. J. Hol
Date
:
15 Jul 92 (Deposition) - 31 Jan 94 (Release) - 08 Sep 09 (Revision)
Method
:
X-RAY DIFFRACTION
Resolution
:
2.30
Chains
:
Asym. Unit : A,C,D,E,F,G,H
Biol. Unit 1: A,C,D,E,F,G,H (1x)
Keywords
:
Toxin
(Keyword Search:
[
Gene Ontology, PubMed, Web (Google)
]
)
Reference
:
T. K. Sixma, S. E. Pronk, K. H. Kalk, B. A. Van Zanten, A. M. Berghuis, W. G. Hol
Lactose Binding To Heat-Labile Enterotoxin Revealed By X-Ray Crystallography.
Nature V. 355 561 1992
(for further references see the
PDB file header
)
[
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Hetero Components
(2, 10)
Info
All Hetero Components
1a: BETA-D-GLUCOSE (BGCa)
1b: BETA-D-GLUCOSE (BGCb)
1c: BETA-D-GLUCOSE (BGCc)
1d: BETA-D-GLUCOSE (BGCd)
1e: BETA-D-GLUCOSE (BGCe)
2a: BETA-D-GALACTOSE (GALa)
2b: BETA-D-GALACTOSE (GALb)
2c: BETA-D-GALACTOSE (GALc)
2d: BETA-D-GALACTOSE (GALd)
2e: BETA-D-GALACTOSE (GALe)
View:
Select:
Label:
No.
Name
Count
Type
Full Name
1
BGC
5
Ligand/Ion
BETA-D-GLUCOSE
2
GAL
5
Ligand/Ion
BETA-D-GALACTOSE
[
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Sites
(10, 10)
Info
All Sites
01: AC1 (SOFTWARE)
02: AC2 (SOFTWARE)
03: AC3 (SOFTWARE)
04: AC4 (SOFTWARE)
05: AC5 (SOFTWARE)
06: AC6 (SOFTWARE)
07: AC7 (SOFTWARE)
08: AC8 (SOFTWARE)
09: AC9 (SOFTWARE)
10: BC1 (SOFTWARE)
View:
Select:
Label:
No.
Name
Evidence
Residues
Description
01
AC1
SOFTWARE
GLU D:51 , GLN D:56 , HIS D:57 , GLN D:61 , TRP D:88 , ASN D:90 , LYS D:91 , BGC D:105 , HOH D:147 , HOH E:110
BINDING SITE FOR RESIDUE GAL D 104
02
AC2
SOFTWARE
GLN D:56 , GAL D:104
BINDING SITE FOR RESIDUE BGC D 105
03
AC3
SOFTWARE
ASP A:170 , GLU E:51 , GLN E:56 , HIS E:57 , GLN E:61 , TRP E:88 , ASN E:90 , LYS E:91 , BGC E:105 , HOH E:152
BINDING SITE FOR RESIDUE GAL E 104
04
AC4
SOFTWARE
GLY C:196 , GLN E:56 , GAL E:104 , HOH E:132 , HOH E:153
BINDING SITE FOR RESIDUE BGC E 105
05
AC5
SOFTWARE
GLU F:51 , GLN F:56 , HIS F:57 , GLN F:61 , TRP F:88 , ASN F:90 , LYS F:91 , BGC F:105 , HOH F:119 , HOH G:120
BINDING SITE FOR RESIDUE GAL F 104
06
AC6
SOFTWARE
GLN F:56 , GAL F:104 , HOH F:119
BINDING SITE FOR RESIDUE BGC F 105
07
AC7
SOFTWARE
GLU G:51 , GLN G:56 , HIS G:57 , GLN G:61 , TRP G:88 , ASN G:90 , LYS G:91 , BGC G:105 , HOH G:126 , HOH G:133
BINDING SITE FOR RESIDUE GAL G 104
08
AC8
SOFTWARE
SER A:81 , HIS A:181 , GLN G:56 , GAL G:104 , HOH G:126 , HOH G:133
BINDING SITE FOR RESIDUE BGC G 105
09
AC9
SOFTWARE
HOH D:119 , GLU H:51 , GLN H:56 , HIS H:57 , GLN H:61 , TRP H:88 , ASN H:90 , LYS H:91 , BGC H:105
BINDING SITE FOR RESIDUE GAL H 104
10
BC1
SOFTWARE
GLN H:56 , GAL H:104 , HOH H:148
BINDING SITE FOR RESIDUE BGC H 105
[
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SAPs(SNPs)/Variants
(2, 6)
Info
(mutated residues are not available)
All SNPs/Variants
1: VAR_ELBP_ECOLX_001 (T75A, chain D/E/F/G/H, )
2: VAR_ELAP_ECOLX_001 (E112K, chain A, )
View:
Select:
Label:
dbSNP
PDB
No.
Source
Variant ID
Variant
UniProt ID
Status
ID
Chain
Variant
1
UniProt
VAR_ELBP_ECOLX_001
*
T
96
A
ELBP_ECOLX
---
---
D/E/F/G/H
T
75
A
2
UniProt
VAR_ELAP_ECOLX_001
*
E
130
K
ELAP_ECOLX
---
---
A
E
112
K
* ID not provided by source
SNP/SAP Summary Statistics
(UniProtKB/Swiss-Prot)
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PROSITE Patterns/Profiles
(0, 0)
Info
All PROSITE Patterns/Profiles
;
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End label:
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Exons
(0, 0)
Info
All Exons
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All Exon Boundaries
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Note:
Exon boundaries colored in "red" are actually farther away from the residue due to missing residues in the structure.
SCOP Domains
(2, 6)
Info
All SCOP Domains
1a: SCOP_d1lttd_ (D:)
1b: SCOP_d1ltte_ (E:)
1c: SCOP_d1lttf_ (F:)
1d: SCOP_d1lttg_ (G:)
1e: SCOP_d1ltth_ (H:)
2a: SCOP_d1ltt_1 (A:,C:)
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)
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)
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)
(
)
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
:
Heat-labile toxin
(24)
Escherichia coli, type IB [TaxId: 562]
(21)
1a
d1lttd_
D:
1b
d1ltte_
E:
1c
d1lttf_
F:
1d
d1lttg_
G:
1e
d1ltth_
H:
Class
:
Alpha and beta proteins (a+b)
(23004)
Fold
:
ADP-ribosylation
(157)
Superfamily
:
ADP-ribosylation
(157)
Family
:
ADP-ribosylating toxins
(85)
Protein domain
:
Heat-labile toxin, A-chain
(10)
Escherichia coli, type IB [TaxId: 562]
(9)
2a
d1ltt.1
A:,C:
[
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CATH Domains
(3, 7)
Info
all CATH domains
1a: CATH_1lttA00 (A:4-188)
2a: CATH_1lttC00 (C:196-236)
3a: CATH_1lttD00 (D:1-103)
3b: CATH_1lttE00 (E:1-103)
3c: CATH_1lttF00 (F:1-103)
3d: CATH_1lttG00 (G:1-103)
3e: CATH_1lttH00 (H:1-103)
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)
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)
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(
)
(
)
Organisms
(
)
(
)
Class
:
Alpha Beta
(26913)
Architecture
:
Alpha-Beta Complex
(3881)
Topology
:
Heat-Labile Enterotoxin; Chain A
(22)
Homologous Superfamily
:
Heat-Labile Enterotoxin, subunit A
(22)
Escherichia coli. Organism_taxid: 562.
(1)
1a
1lttA00
A:4-188
Class
:
Mainly Alpha
(13335)
Architecture
:
Up-down Bundle
(3216)
Topology
:
Single alpha-helices involved in coiled-coils or other helix-helix interfaces
(552)
Homologous Superfamily
:
[code=1.20.5.240, no name defined]
(8)
Escherichia coli. Organism_taxid: 562.
(1)
2a
1lttC00
C:196-236
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)
Escherichia coli. Organism_taxid: 562.
(3)
3a
1lttD00
D:1-103
3b
1lttE00
E:1-103
3c
1lttF00
F:1-103
3d
1lttG00
G:1-103
3e
1lttH00
H:1-103
[
close CATH info
]
Pfam Domains
(2, 7)
Info
all PFAM domains
1a: PFAM_Enterotoxin_a_1lttC01 (C:196-236)
1b: PFAM_Enterotoxin_a_1lttC02 (C:196-236)
2a: PFAM_Enterotoxin_b_1lttH01 (H:1-102)
2b: PFAM_Enterotoxin_b_1lttH02 (H:1-102)
2c: PFAM_Enterotoxin_b_1lttH03 (H:1-102)
2d: PFAM_Enterotoxin_b_1lttH04 (H:1-102)
2e: PFAM_Enterotoxin_b_1lttH05 (H:1-102)
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Clans
(
)
(
)
Families
(
)
(
)
Organisms
(
)
(
)
Clan
:
ADP-ribosyl
(56)
Family
:
Enterotoxin_a
(14)
Escherichia coli
(8)
1a
Enterotoxin_a-1lttC01
C:196-236
1b
Enterotoxin_a-1lttC02
C:196-236
Clan
:
no clan defined [family: Enterotoxin_b]
(23)
Family
:
Enterotoxin_b
(23)
Escherichia coli
(12)
2a
Enterotoxin_b-1lttH01
H:1-102
2b
Enterotoxin_b-1lttH02
H:1-102
2c
Enterotoxin_b-1lttH03
H:1-102
2d
Enterotoxin_b-1lttH04
H:1-102
2e
Enterotoxin_b-1lttH05
H:1-102
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