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Title :   THE REFINED STRUCTURE OF VITAMIN D-DEPENDENT CALCIUM-BINDING PROTEIN FROM BOVINE INTESTINE. MOLECULAR DETAILS, ION BINDING, AND IMPLICATIONS FOR THE STRUCTURE OF OTHER CALCIUM-BINDING PROTEINS

Authors :   D. M. E. Szebenyi, K. Moffat

Date :   09 Sep 86 (Deposition) - 24 Oct 86 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.30

Chains :   Asym./Biol. Unit : A

Keywords :   Calcium-Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   D. M. Szebenyi, K. Moffat
The Refined Structure Of Vitamin D-Dependent Calcium-Binding Protein From Bovine Intestine. Molecular Details, Ion Binding, And Implications For The Structure Of Other Calcium-Binding Proteins.
J. Biol. Chem. V. 261 8761 1986
PubMed-ID: 3722173
(for further references see the PDB file header)

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 3)

Sites (5, 5)

Asymmetric Unit (5, 5)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ALA A:14 , GLU A:17 , ASP A:19 , GLN A:22 , GLU A:27 , HOH A:80	BINDING SITE FOR RESIDUE CA A 76
2	AC2	SOFTWARE	ASP A:54 , ASN A:56 , ASP A:58 , GLU A:60 , GLU A:65 , HOH A:79	BINDING SITE FOR RESIDUE CA A 77
3	AC3	SOFTWARE	GLU A:35 , PHE A:36 , PRO A:37 , SER A:38 , HOH A:84	BINDING SITE FOR RESIDUE SO4 A 78
4	CB1	UNKNOWN	ALA A:14 , ALA A:15 , LYS A:16 , GLU A:17 , GLY A:18 , ASP A:19 , PRO A:20 , ASN A:21 , GLN A:22 , LEU A:23 , SER A:24 , LYS A:25 , GLU A:26 , GLU A:27	NULL
5	CB2	UNKNOWN	ASP A:54 , LYS A:55 , ASN A:56 , GLY A:57 , ASP A:58 , GLY A:59 , GLU A:60 , VAL A:61 , SER A:62 , PHE A:63 , GLU A:64 , GLU A:65	NULL

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (3, 3)

Exons (2, 2)

Asymmetric/Biological Unit (2, 2)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1	ENSBTAT00000022630	1	ENSBTAE00000325724	Un.004.79:167452-167497	46	S100G_BOVIN	-	0	0	-	-
1.2	ENSBTAT00000022630	2	ENSBTAE00000184836	Un.004.79:168025-168168	144	S100G_BOVIN	1-45	45	1	A:1-41	41
1.3	ENSBTAT00000022630	3	ENSBTAE00000184843	Un.004.79:171280-171540	261	S100G_BOVIN	46-79	34	1	A:42-75	34

Sequences/Alignments

Asymmetric/Biological Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
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	UniProt sequence: complete aligned part

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Chain A from PDB  Type:PROTEIN  Length:75
 aligned with S100G_BOVIN | P02633 from UniProtKB/Swiss-Prot  Length:79

    Alignment length:75
                                    14        24        34        44        54        64        74     
           S100G_BOVIN    5 KSPEELKGIFEKYAAKEGDPNQLSKEELKLLLQTEFPSLLKGPSTLDELFEELDKNGDGEVSFEEFQVLVKKISQ 79
               SCOP domains d3icba_ A: Calbindin D9K                                                    SCOP domains
               CATH domains 3icbA00 A:1-75 EF-hand                                                      CATH domains
               Pfam domains --------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhh.......hhhhhhhhhhhhhhhhhh...hhhhhhhhhh.......hhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ----------------------------------------EF_HAND_2  PDB: A:41-75             PROSITE (1)
                PROSITE (2) ------------------------------------------------S100_CABP  PDB: A:49-7----- PROSITE (2)
                PROSITE (3) -----------------------------------------------------EF_HAND_1    --------- PROSITE (3)
               Transcript 1 Exon 1.2  PDB: A:1-41 UniProt: 1-45      Exon 1.3  PDB: A:42-75             Transcript 1
                  3icb A  1 KSPEELKGIFEKYAAKEGDPNQLSKEELKLLLQTEFPSLLKGPSTLDELFEELDKNGDGEVSFEEFQVLVKKISQ 75
                                    10        20        30        40        50        60        70

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	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)

CATH Domains (1, 1)

Pfam Domains (0, 0)

Gene Ontology (5, 5)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (S100G_BOVIN | P02633)

molecular function
	GO:0005509	calcium ion binding	Interacting selectively and non-covalently with calcium ions (Ca2+).
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0005499	vitamin D binding	Interacting selectively and non-covalently with vitamin D, any of a group of related, fat-soluble compounds that are derived from delta-5,7 steroids and play a central role in calcium metabolism. Specific forms of vitamin D include calciferol (ergocalciferol; vitamin D2) and cholecalciferol (calciol; vitamin D3).
cellular component
	GO:0016324	apical plasma membrane	The region of the plasma membrane located at the apical end of the cell.
	GO:0016323	basolateral plasma membrane	The region of the plasma membrane that includes the basal end and sides of the cell. Often used in reference to animal polarized epithelial membranes, where the basal membrane is the part attached to the extracellular matrix, or in plant cells, where the basal membrane is defined with respect to the zygotic axis.

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