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Description

Title :   HIGH RESOLUTION CRYSTAL STRUCTURE OF THE BOVINE BETA-LACTOGLOBULIN (ISOFORMS A AND B) IN ORTHOROMBIC SPACE GROUP

Authors :   K. M. G. Oliveira, L. Sawyer, I. Polikarpov

Date :   30 Jan 99 (Deposition) - 02 May 01 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.95

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

Keywords :   Beta-Lactoglobulin, Variants, Lipocalin, Transport Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   K. M. Oliveira, V. L. Valente-Mesquita, M. M. Botelho, L. Sawyer, S. T. Ferreira, I. Polikarpov
Crystal Structures Of Bovine Beta-Lactoglobulin In The Orthorhombic Space Group C222(1). Structural Differences Between Genetic Variants A And B And Features Of The Tanford Transition.
Eur. J. Biochem. V. 268 477 2001
PubMed-ID: 11168385
(for further references see the PDB file header)

Compounds

Molecule 1 - PROTEIN (BETA-LACTOGLOBULIN)
	Chains	:	A
	Organ	:	BREAST
	Organism Common	:	CATTLE
	Organism Scientific	:	BOS TAURUS
	Organism Taxid	:	9913
	Other Details	:	ALL REAGENTS WERE PURCHASED FROM SIGMA
	Secretion	:	MILK
	Tissue	:	MAMMARY GLAND
	Variant	:	VARIANT B

Structural Features

Chains, Units

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

Summary Information (see also Sequences/Alignments below)

Ligands, Modified Residues, Ions (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1B8E)

Sites (0, 0)

(no "Site" information available for 1B8E)

SS Bonds (1, 1)

Asymmetric Unit

No.	Residues
1	A:106	-	A:119

Cis Peptide Bonds (0, 0)

(no "Cis Peptide Bond" information available for 1B8E)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (5, 5)

Asymmetric Unit (5, 5)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_LACB_BOVIN_001 *	E	61	Q	LACB_BOVIN	---	---	A	E	45	Q
2	UniProt	VAR_LACB_BOVIN_002 *	I	72	L	LACB_BOVIN	---	---	A	I	56	L
3	UniProt	VAR_LACB_BOVIN_003 *	Q	75	H	LACB_BOVIN	---	---	A	Q	59	H
4	UniProt	VAR_LACB_BOVIN_004 *	G	80	D	LACB_BOVIN	---	---	A	G	64	D
5	UniProt	VAR_LACB_BOVIN_005 *	A	134	V	LACB_BOVIN	---	---	A	A	118	V
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 1 (5, 10)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_LACB_BOVIN_001 *	E	61	Q	LACB_BOVIN	---	---	A	E	45	Q
2	UniProt	VAR_LACB_BOVIN_002 *	I	72	L	LACB_BOVIN	---	---	A	I	56	L
3	UniProt	VAR_LACB_BOVIN_003 *	Q	75	H	LACB_BOVIN	---	---	A	Q	59	H
4	UniProt	VAR_LACB_BOVIN_004 *	G	80	D	LACB_BOVIN	---	---	A	G	64	D
5	UniProt	VAR_LACB_BOVIN_005 *	A	134	V	LACB_BOVIN	---	---	A	A	118	V
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

PROSITE Motifs (1, 1)

Asymmetric Unit (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	LIPOCALIN	PS00213	Lipocalin signature.	LACB_BOVIN	25-38	1	A:9-22

Biological Unit 1 (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	LIPOCALIN	PS00213	Lipocalin signature.	LACB_BOVIN	25-38	2	A:9-22

Exons (0, 0)

(no "Exon" information available for 1B8E)

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
	(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:152
 aligned with LACB_BOVIN | P02754 from UniProtKB/Swiss-Prot  Length:178

    Alignment length:152
                                    26        36        46        56        66        76        86        96       106       116       126       136       146       156       166  
           LACB_BOVIN    17 LIVTQTMKGLDIQKVAGTWYSLAMAASDISLLDAQSAPLRVYVEELKPTPEGDLEILLQKWENGECAQKKIIAEKTKIPAVFKIDALNENKVLVLDTDYKKYLLFCMENSAEPEQSLACQCLVRTPEVDDEALEKFDKALKALPMHIRLSFN 168
               SCOP domains d1b8ea_ A: beta-Lactoglobulin                                                                                                                            SCOP domains
               CATH domains 1b8eA00 A:1-152  [code=2.40.128.20, no name defined]                                                                                                     CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhh....hhhhhhee.eeeeeee.hhhhhh........eeeeeee.....eeeeeeeee..eeeeeeeeeee.....eeee.....eeeeeeee....eeeeeeee......eeeeeeee......hhhhhhhhhhhhhh...eeee.. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------Q----------L--H----D-----------------------------------------------------V---------------------------------- SAPs(SNPs)
                    PROSITE --------LIPOCALIN     ---------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1b8e A   1 LIVTQTMKGLDIQKVAGTWYSLAMAASDISLLDAQSAPLRVYVEELKPTPEGDLEILLQKWENGECAQKKIIAEKTKIPAVFKIDALNENKVLVLDTDYKKYLLFCMENSAEPEQSLACQCLVRTPEVDDEALEKFDKALKALPMHIRLSFN 152
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150

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: Lipocalins (514)

Superfamily: Lipocalins (514)

Family: Retinol binding protein-like (261)

Protein domain: beta-Lactoglobulin (41)

Cow (Bos taurus) [TaxId: 9913] (39)

d1b8ea_

CATH Domains (1, 1)

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Beta (13760)

Architecture: Beta Barrel (4804)

Topology: Lipocalin (526)

Homologous Superfamily: [code=2.40.128.20, no name defined] (352)

Cattle (Bos taurus) (38)

1b8eA00

A:1-152

Pfam Domains (0, 0)

(no "Pfam Domain" information available for 1B8E)

Gene Ontology (4, 4)

Asymmetric Unit(hide GO term definitions)

Chain A (LACB_BOVIN | P02754)

molecular function
	GO:0019841	retinol binding	Interacting selectively and non-covalently with retinol, vitamin A1, 2,6,6-trimethyl-1-(9'-hydroxy-3',7'-dimethylnona-1',3',5',7'-tetraenyl)cyclohex-1-ene, one of the three components that makes up vitamin A. Retinol is an intermediate in the vision cycle and it also plays a role in growth and differentiation.
	GO:0036094	small molecule binding	Interacting selectively and non-covalently with a small molecule, any low molecular weight, monomeric, non-encoded molecule.
biological process
	GO:0006810	transport	The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
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.

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	1b8e
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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
	LACB_BOVIN \| P02754	:	1b0o 1beb 1bso 1bsq 1bsy 1cj5 1dv9 1gx8 1gx9 1gxa 1qg5 1uz2 1yup 2akq 2blg 2gj5 2q2m 2q2p 2q39 2r56 3blg 3kza 3npo 3nq3 3nq9 3ph5 3ph6 3ueu 3uev 3uew 3uex 4dq3 4dq4 4gny 4ib6 4ib7 4ib8 4ib9 4iba 4kii 4lzu 4lzv 4y0p 4y0q 4y0r 5eee 5htd 5hte 5io5 5io7 5k06 5lke 5lkf

Related Entries Specified in the PDB File

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