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Entry version 70 (11 Dec 2019)
Sequence version 2 (29 May 2007)
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Protein

Malate dehydrogenase

Gene

mdh

Organism
Flavobacterium frigidimaris
Status
Reviewed-Annotation score:

Annotation score:4 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

Catalyzes the reversible oxidation of malate to oxaloacetate. Can use both NAD and NADP for malate oxidation, but NADPH cannot be used for oxaloacetate reduction.

1 Publication

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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_section">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

Strongly inhibited by iodoacetic acid and CuCl2. Completely inhibited by N-ethylmaleimide and HgCl2.1 Publication

<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 138 sec(-1).1 Publication
  1. KM=0.740 mM for L-malate (at 40 degrees Celsius)1 Publication
  2. KM=0.0382 mM for NAD+ (at 40 degrees Celsius)1 Publication
  1. Vmax=456 µmol/min/mg enzyme (at 40 degrees Celsius)1 Publication

pH dependencei

Optimum pH is 10.5 for malate oxidation and 8.0 for oxaloacetate reduction.1 Publication

Temperature dependencei

Optimum temperature is 40 degrees Celsius.1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 sitei32NADUniRule annotation1
Binding sitei82SubstrateUniRule annotation1
Binding sitei88SubstrateUniRule annotation1
Binding sitei95NADUniRule annotation1
Binding sitei120SubstrateUniRule annotation1
Binding sitei151SubstrateUniRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 sitei175Proton acceptorUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi7 – 12NADUniRule annotation6
Nucleotide bindingi118 – 120NADUniRule annotation3

<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

GO - Biological processi

<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 functionOxidoreductase
Biological processTricarboxylic acid cycle
LigandNAD

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
1.1.1.37, 8533

<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_and_taxonomy_section">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:
Malate dehydrogenase1 PublicationUniRule annotation (EC:1.1.1.37UniRule annotation1 Publication)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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:mdh1 PublicationUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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>OrganismiFlavobacterium frigidimaris
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 identifieri262320 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 lineageiBacteriaBacteroidetesFlavobacteriiaFlavobacterialesFlavobacteriaceaeFlavobacterium

<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_00004360251 – 311Malate dehydrogenaseAdd BLAST311

<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_section">'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_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homotetramer.

2 Publications

<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
Q25QU7

Database of comparative protein structure models

More...
ModBasei
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

<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 LDH/MDH superfamily. MDH type 3 family.UniRule annotationCurated

Family and domain databases

Conserved Domains Database

More...
CDDi
cd01339, LDH-like_MDH, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

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Gene3Di
3.90.110.10, 1 hit

HAMAP database of protein families

More...
HAMAPi
MF_00487, Malate_dehydrog_3, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR001557, L-lactate/malate_DH
IPR022383, Lactate/malate_DH_C
IPR001236, Lactate/malate_DH_N
IPR015955, Lactate_DH/Glyco_Ohase_4_C
IPR011275, Malate_DH_type3
IPR036291, NAD(P)-bd_dom_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF02866, Ldh_1_C, 1 hit
PF00056, Ldh_1_N, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF000102, Lac_mal_DH, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00086, LLDHDRGNASE

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF51735, SSF51735, 1 hit
SSF56327, SSF56327, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR01763, MalateDH_bact, 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_length">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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.

Q25QU7-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKVTIVGAGN VGATCADVIS YRGIASEVVL LDIKEGFAEG KALDIMQCAT
60 70 80 90 100
NTGFNTKVSG VTNDYSKTAG SDVVVITSGI PRKPGMTREE LIGINAGIVK
110 120 130 140 150
TVAENVLKHS PNTIIVVVSN PMDTMTYLAL KATGVPKNRI IGMGGALDSS
160 170 180 190 200
RFRTYLSLAL DKPANDISAM VIGGHGDTTM IPLTRLASYN GIPVTEFLSE
210 220 230 240 250
EVLQKVAADT MVGGATLTGL LGTSAWYAPG ASVAYLVDSI LNDQKKMIAC
260 270 280 290 300
SVFVEGEYGQ NDICIGVPCI IGKNGVEEIL DIKLNDQEKA LFAKSADAVR
310
GMNDALKSIL V
Length:311
Mass (Da):32,610
Last modified:May 29, 2007 - v2
<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:i7693C700FE143722
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti15C → T AA sequence (PubMed:16306697).Curated1
Sequence conflicti17D → F AA sequence (PubMed:16306697).Curated1
Sequence conflicti61Missing AA sequence (PubMed:16306697).Curated1
Sequence conflicti64D → N AA sequence (PubMed:16306697).Curated1
Sequence conflicti143M → V AA sequence (PubMed:16306697).Curated1

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
AB161423 Genomic DNA Translation: BAE91927.2

<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
AB161423 Genomic DNA Translation: BAE91927.2

3D structure databases

SMRiQ25QU7
ModBaseiSearch...

Enzyme and pathway databases

BRENDAi1.1.1.37, 8533

Family and domain databases

CDDicd01339, LDH-like_MDH, 1 hit
Gene3Di3.90.110.10, 1 hit
HAMAPiMF_00487, Malate_dehydrog_3, 1 hit
InterProiView protein in InterPro
IPR001557, L-lactate/malate_DH
IPR022383, Lactate/malate_DH_C
IPR001236, Lactate/malate_DH_N
IPR015955, Lactate_DH/Glyco_Ohase_4_C
IPR011275, Malate_DH_type3
IPR036291, NAD(P)-bd_dom_sf
PfamiView protein in Pfam
PF02866, Ldh_1_C, 1 hit
PF00056, Ldh_1_N, 1 hit
PIRSFiPIRSF000102, Lac_mal_DH, 1 hit
PRINTSiPR00086, LLDHDRGNASE
SUPFAMiSSF51735, SSF51735, 1 hit
SSF56327, SSF56327, 1 hit
TIGRFAMsiTIGR01763, MalateDH_bact, 1 hit

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 nameiMDH_FLAFR
<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: Q25QU7
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 13, 2016
Last sequence update: May 29, 2007
Last modified: December 11, 2019
This is version 70 of the entry and version 2 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)
Annotation programProkaryotic Protein Annotation Program

<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

Direct protein sequencing

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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