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UniProtKB - Q8T9Z7 (PNPH_PLAFA)

Entry version 78 (07 Apr 2021)
Sequence version 1 (01 Jun 2002)
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Protein

Purine nucleoside phosphorylase

Gene

PNP

Organism
Plasmodium falciparum
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

As part of the purine salvage pathway, catalyzes the phosphorolytic breakdown of the N-glycosidic bond in the beta-(deoxy)ribonucleoside molecules, with the formation of the corresponding free purine bases and pentose-1-phosphate (PubMed:11707439, PubMed:30602534). Preferentially acts on inosine and guanosine, and to a lesser extent on 2'-deoxyinosine and 2'-deoxyguanosine (PubMed:11707439). Also catalyzes the phosphorylation of S-methyl-5'-thioinosine (MTI) to hypoxanthine; MTI is produced by adenosine deaminase (ADA)-mediated breakdown of S-methyl-5'-thioadenosine (MTA), a major by-product of polyamine biosynthesis (By similarity). Generates hypoxanthine from both the purine salvage pathway and from polyamine metabolism which is required for nucleic acids synthesis (By similarity). Has no activity towards adenosine (PubMed:11707439).By similarity2 Publications

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

Inhibited by Immucillin-H (PubMed:11707439, PubMed:30602534). Inhibited by antimalaria drugs quinine and mefloquine (PubMed:30602534).2 Publications

<p>This subsection of the 'Function' section describes biophysical and chemical properties, such as maximal absorption, kinetic parameters, pH dependence, redox potentials and temperature dependence.<p><a href='/help/biophysicochemical_properties' target='_top'>More...</a></p>Kineticsi

kcat is 0.34 sec(-1) with inosine as substrate (PubMed:11707439). kcat is 0.14 sec(-1) with guanosine as substrate (PubMed:11707439). kcat is 0.64 sec(-1) with 2'-deoxyinosine as substrate (PubMed:11707439). kcat is 0.2 sec(-1) with 2'-deoxyguanosine as substrate (PubMed:11707439). kcat is 0.026 sec(-1) with uridine as substrate (PubMed:11707439).1 Publication
  1. KM=5 µM for inosine1 Publication
  2. KM=104 µM for 2'-deoxyinosine1 Publication
  3. KM=9.7 µM for guanosine1 Publication
  4. KM=69 µM for 2'-deoxyguanosine1 Publication
  5. KM=85 µM for uridine1 Publication

    <p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: purine nucleoside salvage

    This protein is involved in the pathway purine nucleoside salvage, which is part of Purine metabolism.1 Publication
    View all proteins of this organism that are known to be involved in the pathway purine nucleoside salvage and in Purine metabolism.

    Sites

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei7Purine nucleoside; shared with dimeric partnerBy similarity1
    Binding sitei45Phosphate; shared with dimeric partnerBy similarity1
    <p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei206Proton donorBy similarity1

    <p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

    Complete GO annotation on QuickGO ...

    GO - Biological processi

    Complete GO annotation on QuickGO ...

    <p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

    Molecular functionGlycosyltransferase, Transferase
    Biological processPurine salvage

    Enzyme and pathway databases

    BioCyc Collection of Pathway/Genome Databases

    More...    BioCyci    		MetaCyc:MONOMER-16356

    BRENDA Comprehensive Enzyme Information System

    More...    BRENDAi    		2.4.2.1, 4889

    UniPathway: a resource for the exploration and annotation of metabolic pathways

    More...    UniPathwayi    		UPA00606

    <p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

    <p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
    Recommended name:
    Purine nucleoside phosphorylase1 Publication (EC:2.4.2.12 Publications)
    Alternative name(s):
    S-methyl-5'-thioinosine phosphorylaseBy similarity (EC:2.4.2.44By similarity)
    <p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
    Name:PNPImported
    <p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiPlasmodium falciparumImported
    <p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri5833 [NCBI]
    <p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryota › Sar › Alveolata › Apicomplexa › Aconoidasida › Haemosporida › Plasmodiidae › Plasmodium › Plasmodium (Laverania)

    <p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

    Chemistry databases

    ChEMBL database of bioactive drug-like small molecules

    More...    ChEMBLi    		CHEMBL5648

    DrugCentral

    More...    DrugCentrali    		Q8T9Z7

    <p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

    Molecule processing

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00004518261 – 245Purine nucleoside phosphorylaseAdd BLAST245

    <p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

    <p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

    Homohexamer; trimer of homodimers.

    By similarity

    Chemistry databases

    BindingDB database of measured binding affinities

    More...    BindingDBi    		Q8T9Z7

    <p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

    3D structure databases

    SWISS-MODEL Repository - a database of annotated 3D protein structure models

    More...    SMRi    		Q8T9Z7

    Database of comparative protein structure models

    More...    ModBasei    		Search...

    Protein Data Bank in Europe - Knowledge Base

    More...    PDBe-KBi    		Search...

    <p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

    Region

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni23 – 27Phosphate bindingCombined sources1 Publication5
    Regioni88 – 91Phosphate bindingCombined sources1 Publication4
    Regioni183 – 184Purine nucleoside bindingBy similarity2

    <p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

    Belongs to the PNP/MTAP phosphorylase family.Curated

    Family and domain databases

    Gene3D Structural and Functional Annotation of Protein Families

    More...    Gene3Di    		3.40.50.1580, 1 hit

    Integrated resource of protein families, domains and functional sites

    More...    InterProi    		View protein in InterPro
    IPR000845, Nucleoside_phosphorylase_d
    IPR035994, Nucleoside_phosphorylase_sf

    Pfam protein domain database

    More...    Pfami    		View protein in Pfam
    PF01048, PNP_UDP_1, 1 hit

    Superfamily database of structural and functional annotation

    More...    SUPFAMi    		SSF53167, SSF53167, 1 hit

    <p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

    <p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

    Q8T9Z7-1 [UniParc]FASTAAdd to basket
    « Hide
            10         20         30         40         50
    MDNLLRHLKI SKEQITPVVL VVGDPGRVDK IKVVCDSYVD LAYNREYKSV 
            60         70         80         90        100
    ECHYKGQKFL CVSHGVGSAG CAVCFEELCQ NGAKVIIRAG SCGSLQPDLI 
           110        120        130        140        150
    KRGDICICNA AVREDRVSHL LIHGDFPAVG DFDVYDTLNK CAQELNVPVF 
           160        170        180        190        200
    NGISVSSDMY YPNKIIPSRL EDYSKANAAV VEMELATLMV IGTLRKVKTG 
           210        220        230        240 
    GILIVDGCPF KWDEGDFDNN LVPHQLENMI KIALGACAKL ATKYA
    Length:245
    Mass (Da):26,858
    Last modified:June 1, 2002 - v1
    <p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i2159E9731C410A23
    GO

    Sequence databases

    Select the link destinations:

    EMBL nucleotide sequence database

    More...    EMBLi

    GenBank nucleotide sequence database

    More...    GenBanki

    DNA Data Bank of Japan; a nucleotide sequence database

    More...    DDBJi
    Links Updated
    		AF426159 Genomic DNA Translation: AAL74412.1

    <p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

    <p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBLi
    GenBanki
    DDBJi
    Links Updated
    		AF426159 Genomic DNA Translation: AAL74412.1

    3D structure databases

    Select the link destinations:

    Protein Data Bank Europe

    More...    PDBei

    Protein Data Bank RCSB

    More...    RCSB PDBi

    Protein Data Bank Japan

    More...    PDBji
    Links Updated
    		PDB entryMethodResolution (Å)ChainPositionsPDBsum
    5ZNCX-ray1.66A1-245[»]
    5ZNIX-ray2.30A1-245[»]
    SMRiQ8T9Z7
    ModBaseiSearch...
    PDBe-KBiSearch...

    Chemistry databases

    BindingDBiQ8T9Z7
    ChEMBLiCHEMBL5648
    DrugCentraliQ8T9Z7

    Enzyme and pathway databases

    UniPathwayiUPA00606
    BioCyciMetaCyc:MONOMER-16356
    BRENDAi2.4.2.1, 4889

    Family and domain databases

    Gene3Di3.40.50.1580, 1 hit
    InterProiView protein in InterPro
    IPR000845, Nucleoside_phosphorylase_d
    IPR035994, Nucleoside_phosphorylase_sf
    PfamiView protein in Pfam
    PF01048, PNP_UDP_1, 1 hit
    SUPFAMiSSF53167, SSF53167, 1 hit

    ProtoNet; Automatic hierarchical classification of proteins

    More...    ProtoNeti    		Search...

    MobiDB: a database of protein disorder and mobility annotations

    More...    MobiDBi    		Search...

    <p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

    <p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiPNPH_PLAFA
    <p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: Q8T9Z7
    <p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 10, 2021
    Last sequence update: June 1, 2002
    Last modified: April 7, 2021
    This is version 78 of the entry and version 1 of the sequence. See complete history.
    <p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)

    <p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

    Keywords - Technical termi

    3D-structure

    Documents

    1. PATHWAY comments
      Index of metabolic and biosynthesis pathways
    2. PDB cross-references
      Index of Protein Data Bank (PDB) cross-references
    3. SIMILARITY comments
      Index of protein domains and families
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