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Description

Title :   LACTOSE AND MES-LIGANDED CONGERIN II

Authors :   T. Shirai, Y. Matsui, C. Shionyu-Mitsuyama, T. Yamane, H. Kamiya, C. Is T. Ogawa, K. Muramoto

Date :   12 Nov 01 (Deposition) - 18 Sep 02 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.45

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

Keywords :   Complex With Lactose And Mes, Sugar Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   T. Shirai, Y. Matsui, C. Shionyu-Mitsuyama, T. Yamane, H. Kamiya, C. Ishii, T. Ogawa, K. Muramoto
Crystal Structure Of A Conger Eel Galectin (Congerin Ii) At 1. 45 A Resolution: Implication For The Accelerated Evolutio Of A New Ligand-Binding Site Following Gene Duplication
J. Mol. Biol. V. 321 879 2002
PubMed-ID: 12206768 | Reference-DOI: 10.1016/S0022-2836(02)00700-3

Compounds

Molecule 1 - CONGERIN II
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PTV118N
	Expression System Strain	:	JM109
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Organism Common	:	WHITESPOTTED CONGER
	Organism Scientific	:	CONGER MYRIASTER
	Organism Taxid	:	7943
	Synonym	:	BETA-GALACTOSIDE-BINDING LECTIN 2
	Tissue	:	SKIN MUCUS

Structural Features

Chains, Units

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

Summary Information (see also Sequences/Alignments below)

Ligands, Modified Residues, Ions (2, 2)

Asymmetric Unit (2, 2)

No.	Name	Count	Type	Full Name
1	LAT	1	Ligand/Ion	BETA-LACTOSE
2	MES	1	Ligand/Ion	2-(N-MORPHOLINO)-ETHANESULFONIC ACID

Biological Unit 1 (2, 4)

No.	Name	Count	Type	Full Name
1	LAT	2	Ligand/Ion	BETA-LACTOSE
2	MES	2	Ligand/Ion	2-(N-MORPHOLINO)-ETHANESULFONIC ACID

Sites (2, 2)

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ARG A:29 , HIS A:44 , ASP A:46 , ARG A:48 , TYR A:51 , ASN A:61 , GLU A:72 , ARG A:74 , HOH A:523 , HOH A:575	BINDING SITE FOR RESIDUE LAT A 401
2	AC2	SOFTWARE	ARG A:3 , THR A:38 , ASP A:39 , HIS A:65 , TRP A:69 , TYR A:122 , HOH A:532	BINDING SITE FOR RESIDUE MES A 777

SS Bonds (0, 0)

(no "SS Bond" information available for 1IS3)

Cis Peptide Bonds (0, 0)

(no "Cis Peptide Bond" information available for 1IS3)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

(no "SAP(SNP)/Variant" information available for 1IS3)

PROSITE Motifs (1, 1)

Asymmetric Unit (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	GALECTIN	PS51304	Galactoside-binding lectin (galectin) domain profile.	LEG2_CONMY	4-136	1	A:3-135

Biological Unit 1 (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	GALECTIN	PS51304	Galactoside-binding lectin (galectin) domain profile.	LEG2_CONMY	4-136	2	A:3-135

Exons (0, 0)

(no "Exon" information available for 1IS3)

Sequences/Alignments

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
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Chain A from PDB  Type:PROTEIN  Length:134
 aligned with LEG2_CONMY | Q9YIC2 from UniProtKB/Swiss-Prot  Length:136

    Alignment length:134
                                    12        22        32        42        52        62        72        82        92       102       112       122       132    
           LEG2_CONMY     3 DRAEVRNIPFKLGMYLTVGGVVNSNATRFSINVGESTDSIAMHMDHRFSYGADQNVLVLNSLVHNVGWQQEERSKKFPFTKGDHFQTTITFDTHTFYIQLSNGETVEFPNRNKDAAFNLIYLAGDARLTFVRLE 136
               SCOP domains d1is3a_ A: Congerin II                                                                                                                 SCOP domains
               CATH domains 1is3A00 A:2-135  [code=2.60.120.200, no name defined]                                                                                  CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeeeeeee....eeeeeee.....eeeeeeeee..eeeeeeeee........eeeeeeee...ee...eee.........eeeeeeee...eeeee.....eeeee......eeeeeeeee.eeeeeeee. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -GALECTIN  PDB: A:3-135 UniProt: 4-136                                                                                                 PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1is3 A   2 DRAEVRNIPFKLGMYLTVGGVVNSNATRFSINVGESTDSIAMHMDHRFSYGADQNVLVLNSLVHNVGWQQEERSKKFPFTKGDHFQTTITFDTHTFYIQLSNGETVEFPNRNKDAAFNLIYLAGDARLTFVRLE 135
                                    11        21        31        41        51        61        71        81        91       101       111       121       131

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 '\|'

Classification and Annotation

SCOP Domains (1, 1)

Asymmetric Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: All beta proteins (24004)

Fold: Concanavalin A-like lectins/glucanases (797)

Superfamily: Concanavalin A-like lectins/glucanases (797)

Family: Galectin (animal S-lectin) (75)

Protein domain: Congerin II (4)

Conger eel (Conger myriaster) [TaxId: 7943] (4)

d1is3a_

CATH Domains (1, 1)

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Beta (13760)

Architecture: Sandwich (5577)

Topology: Jelly Rolls (1293)

Homologous Superfamily: [code=2.60.120.200, no name defined] (421)

Whitespotted conger (Conger myriaster) (9)

1is3A00

A:2-135

Pfam Domains (0, 0)

(no "Pfam Domain" information available for 1IS3)

Gene Ontology (1, 1)

Asymmetric Unit(hide GO term definitions)

Chain A (LEG2_CONMY | Q9YIC2)

molecular function
	GO:0030246		carbohydrate binding		Interacting selectively and non-covalently with any carbohydrate, which includes monosaccharides, oligosaccharides and polysaccharides as well as substances derived from monosaccharides by reduction of the carbonyl group (alditols), by oxidation of one or more hydroxy groups to afford the corresponding aldehydes, ketones, or carboxylic acids, or by replacement of one or more hydroxy group(s) by a hydrogen atom. Cyclitols are generally not regarded as carbohydrates.

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
	LEG2_CONMY \| Q9YIC2	:	1is4 1is5 1is6 1wlc 1wld 1wlw

Related Entries Specified in the PDB File

1c1l	1C1L CONTAINS LACTOSE-LIGANDED CONGERIN I.
1is4	1IS4 CONTAINS LACTOSE-LIGANDED CONGERIN II.
1is5	1IS5 CONTAINS LIGAND FREE CONGERIN II.
1is6	1IS6 CONTAINS 2-(N-MORPHOLINO)-ETHANESULFONIC ACID-LIGANDED CONGERIN II.