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Title :   CRYSTAL STRUCTURE OF HUMAN INOSINE TRIPHOSPHATE PYROPHOSPHATASE

Authors :   J. C. Porta, S. G. Kozmin, Y. I. Pavlov, G. E. O. Borgstahl

Date :   24 Aug 06 (Deposition) - 05 Sep 06 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.63

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

Keywords :   Monomeric Protein, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   J. Porta, C. Kolar, S. G. Kozmin, Y. I. Pavlov, G. E. O. Borgstahl
Structure Of The Orthorhombic Form Of Human Inosine Triphosphate Pyrophosphatase.
Acta Crystallogr. , Sect. F V. 62 1076 2006
PubMed-ID: 17077483 | Reference-DOI: 10.1107/S1744309106041790
(for further references see the PDB file header)

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (0, 0)

Sites (0, 0)

SS Bonds (0, 0)

Cis Peptide Bonds (1, 1)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (2, 2)

PROSITE Motifs (0, 0)

Exons (8, 8)

Asymmetric Unit (8, 8)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.2a	ENST00000380113	2a	ENSE00001483921	chr20:3190006-3190263	258	ITPA_HUMAN	1-22	22	1	A:1-22	22
1.3	ENST00000380113	3	ENSE00000858731	chr20:3193815-3193872	58	ITPA_HUMAN	23-42	20	1	A:23-42	20
1.4b	ENST00000380113	4b	ENSE00000858732	chr20:3193965-3194029	65	ITPA_HUMAN	42-63	22	1	A:42-63	22
1.5	ENST00000380113	5	ENSE00000858733	chr20:3194631-3194704	74	ITPA_HUMAN	64-88	25	1	A:64-88	25
1.6b	ENST00000380113	6b	ENSE00001269727	chr20:3195927-3195958	32	ITPA_HUMAN	88-99	12	1	A:88-99	12
1.7b	ENST00000380113	7b	ENSE00001269752	chr20:3199163-3199278	116	ITPA_HUMAN	99-137	39	1	A:99-137	39
1.8b	ENST00000380113	8b	ENSE00001269713	chr20:3202487-3202563	77	ITPA_HUMAN	138-163	26	1	A:138-163	26
1.9c	ENST00000380113	9c	ENSE00001852672	chr20:3204012-3204516	505	ITPA_HUMAN	163-194	32	1	A:163-194	32

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:195
 aligned with ITPA_HUMAN | Q9BY32 from UniProtKB/Swiss-Prot  Length:194

    Alignment length:195
                             1                                                                                                                                                                                                 
                             |       9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189     
           ITPA_HUMAN     - -MAASLVGKKIVFVTGNAKKLEEVVQILGDKFPCTLVAQKIDLPEYQGEPDEISIQKCQEAVRQVQGPVLVEDTCLCFNALGGLPGPYIKWFLEKLKPEGLHQLLAGFEDKSAYALCTFALSTGDPSQPVRLFRGRTSGRIVAPRGCQDFGWDPCFQPDGYEQTYAEMPKAEKNAVSHRFRALLELQEYFGSLAA 194
               SCOP domains d2i5da_ A: automated matches                                                                                                                                                                        SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhh..eeeee..hhhhhhhhhhhhh.....eeeee.........hhhhhhhhhhhhhhhhhh..eeeeeeeeee.hhh..ee.hhhhhhhhhhhhhhhhh.......eeeeeeeeeee........eeeeeeeeeee..........hhh.eee..........hhhhhhhhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------T-------------------------------------------------------------------------------------------------------------------------------------------------C---------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) -Exon 1.2a  PDB: A:1-22Exon 1.3            ---------------------Exon 1.5  PDB: A:64-88   ----------Exon 1.7b  PDB: A:99-137               Exon 1.8b  PDB: A:138-163 ------------------------------- Transcript 1 (1)
           Transcript 1 (2) ------------------------------------------Exon 1.4b  PDB: A:42-6------------------------Exon 1.6b   ---------------------------------------------------------------Exon 1.9c  PDB: A:163-194        Transcript 1 (2)
                 2i5d A   0 HMAASLVGKKIVFVTGNAKKLEEVVQILGDKFPCTLVAQKIDLPEYQGEPDEISIQKCQEAVRQVQGPVLVEDTCLCFNALGGLPGPYIKWFLEKLKPEGLHQLLAGFEDKSAYALCTFALSTGDPSQPVRLFRGRTSGRIVAPRGCQDFGWDPCFQPDGYEQTYAEMPKAEKNAVSHRFRALLELQEYFGSLAA 194
                                     9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189

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)

CATH Domains (0, 0)

Pfam Domains (0, 0)

Gene Ontology (15, 15)

Asymmetric Unit(hide GO term definitions)

Chain A (ITPA_HUMAN | Q9BY32)

molecular function
	GO:0036220	ITP diphosphatase activity	Catalysis of the reaction: ITP + H2O = IMP + diphosphate.
	GO:0036222	XTP diphosphatase activity	Catalysis of the reaction: XTP + H2O = xanthosine 5'-phosphate + diphosphate.
	GO:0035870	dITP diphosphatase activity	Catalysis of the reaction: dITP + H2O = dIMP + diphosphate.
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0047429	nucleoside-triphosphate diphosphatase activity	Catalysis of the reaction: H2O + a nucleoside triphosphate = diphosphate + a nucleotide.
	GO:0000166	nucleotide binding	Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
biological process
	GO:0006193	ITP catabolic process	The chemical reactions and pathways resulting in the breakdown of ITP, inosine (5'-)triphosphate.
	GO:0051276	chromosome organization	A process that is carried out at the cellular level that results in the assembly, arrangement of constituent parts, or disassembly of chromosomes, structures composed of a very long molecule of DNA and associated proteins that carries hereditary information. This term covers covalent modifications at the molecular level as well as spatial relationships among the major components of a chromosome.
	GO:0009204	deoxyribonucleoside triphosphate catabolic process	The chemical reactions and pathways resulting in the breakdown of a deoxyribonucleoside triphosphate, a compound consisting of a nucleobase linked to a deoxyribose sugar esterified with triphosphate on the sugar.
	GO:0055086	nucleobase-containing small molecule metabolic process	The cellular chemical reactions and pathways involving a nucleobase-containing small molecule: a nucleobase, a nucleoside, or a nucleotide.
	GO:0009143	nucleoside triphosphate catabolic process	The chemical reactions and pathways resulting in the breakdown of a nucleoside triphosphate, a compound consisting of a nucleobase linked to a deoxyribose or ribose sugar esterified with triphosphate on the sugar.
	GO:0009117	nucleotide metabolic process	The chemical reactions and pathways involving a nucleotide, a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the glycose moiety; may be mono-, di- or triphosphate; this definition includes cyclic nucleotides (nucleoside cyclic phosphates).
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
	GO:0005829	cytosol	The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

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	Cis Peptide Bonds
		Leu A:83 - Pro A:84	[ RasMol ]

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