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Entry version 114 (07 Oct 2020)
Sequence version 1 (01 Aug 1998)
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Protein

Mercuric reductase

Gene

merA

Organism
Bacillus megaterium
Status
Unreviewed-Annotation score:

Annotation score:3 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>
-Protein inferred from homologyi <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

Resistance to Hg2+ in bacteria appears to be governed by a specialized system which includes mercuric reductase. MerA protein is responsible for volatilizing mercury as Hg0.UniRule annotation

<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 'Function' section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

FADUniRule annotationNote: Binds 1 FAD per subunit.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi13PROSITE-ProRule annotation1
Metal bindingi16PROSITE-ProRule annotation1
Metal bindingi92PROSITE-ProRule annotation1
Metal bindingi95PROSITE-ProRule annotation1
<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 sitei216FADUniRule annotation1
Binding sitei431NAD; via amide nitrogenUniRule annotation1
Binding sitei472FADUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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 bindingi341 – 348NADUniRule annotation8

<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 functionOxidoreductaseUniRule annotationARBA annotation
Biological processMercuric resistanceUniRule annotationARBA annotation
LigandFADUniRule annotationARBA annotation, Flavoprotein, MercuryUniRule annotationARBA annotation, Metal-bindingUniRule annotationARBA annotation, NADUniRule annotation, NADPUniRule annotationARBA annotation, Nucleotide-bindingUniRule annotation

<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:
Mercuric reductaseUniRule annotation (EC:1.16.1.1UniRule annotation)
Alternative name(s):
Hg(II) reductaseUniRule annotation
<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:merAUniRule annotationImported
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates if the gene coding for the protein originates from the hydrogenosome, the mitochondrion, the nucleomorph, different plastids or a plasmid. The absence of this section means that the gene is located in one of the main chromosomal element(s).<p><a href='/help/encoded_on' target='_top'>More...</a></p>Encoded oniPlasmid pKHL304Imported
<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>OrganismiBacillus megateriumImported
<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 identifieri1404 [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 lineageiBacteriaFirmicutesBacilliBacillalesBacillaceaeBacillus

<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

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi207 ↔ 212Redox-activeUniRule annotation

Keywords - PTMi

Disulfide bondARBA annotation

<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

Homodimer.

UniRule annotationARBA annotation

<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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini3 – 67HMAInterPro annotationAdd BLAST65
Domaini82 – 146HMAInterPro annotationAdd BLAST65

<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 class-I pyridine nucleotide-disulfide oxidoreductase family.UniRule annotationARBA annotation

Keywords - Domaini

Redox-active centerARBA annotation

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00371, HMA, 2 hits

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.390.30, 1 hit
3.50.50.60, 2 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR036188, FAD/NAD-bd_sf
IPR023753, FAD/NAD-binding_dom
IPR016156, FAD/NAD-linked_Rdtase_dimer_sf
IPR017969, Heavy-metal-associated_CS
IPR006121, HMA_dom
IPR036163, HMA_dom_sf
IPR021179, Mercury_reductase_MerA
IPR001100, Pyr_nuc-diS_OxRdtase
IPR004099, Pyr_nucl-diS_OxRdtase_dimer
IPR012999, Pyr_OxRdtase_I_AS

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00403, HMA, 1 hit
PF07992, Pyr_redox_2, 1 hit
PF02852, Pyr_redox_dim, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF000350, Mercury_reductase_MerA, 2 hits

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF51905, SSF51905, 1 hit
SSF55008, SSF55008, 2 hits
SSF55424, SSF55424, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR02053, MerA, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS01047, HMA_1, 2 hits
PS50846, HMA_2, 2 hits
PS00076, PYRIDINE_REDOX_1, 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.

O69256-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKKYRVNVQG MTCSGCEQHV AVALENMGAK EIEVDFRRGE AVFELPDDVE
60 70 80 90 100
VEVAKNAIAD ANYHPGEAEE FQSEQKTNLL KKYRLNVEGM TCTGCEEHVA
110 120 130 140 150
VALENAGAKG IEVNFRRGEA VFELPDDVDI DIAKIAITDA KYQPGEAEEI
160 170 180 190 200
EVQSDKRTDV SLNDEGNYDY DYIIIGSGGA AFSSAIEAVA LNAKVAMIER
210 220 230 240 250
GTVGGTCVNV GCVPSKTLLR AGEINHLAKN NPFVGLHTSA SNVDLAPLIK
260 270 280 290 300
QKNDLVTEMR NEKYVNLIDD YGFELIKGEA KFVNENTVEV NGNQITAKRF
310 320 330 340 350
LIATGASSTA PNIPGLDEVD YLTSTSLLEL KKVPNRLTVI GSGYIGMELG
360 370 380 390 400
QLFHNLGSEV TLIQRSERLL KEYDPEISEA ITKALTEQGI NLVTGATYER
410 420 430 440 450
VEQDGDIKKV HIEINGKKRI IEAEQLLIAT GRKPNTESLN LHAADVEVGS
460 470 480 490 500
RGEIIIDDYL KTTNSRIYAA GDVTLGPQFV YVAAYEGRLV ARNAIGGLNQ
510 520 530 540 550
KVNLEVVPGV TFTSPSIATV GLTEQQAKEK GYEVKTSVLP LDAVPRALVN
560 570 580 590 600
RETTGVFKLV ADAKTLKVLG AHIVTENAGD VIYAATLAVK FGLTVEDLRG
610 620 630
TMAPYLTMAE GLKLAALTFD KDVSKLSCCA G
Length:631
Mass (Da):68,266
Last modified:August 1, 1998 - 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:i52C787F8CE0BFCC9
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
Y09907 Genomic DNA Translation: CAA71040.1

<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
Y09907 Genomic DNA Translation: CAA71040.1

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Family and domain databases

CDDicd00371, HMA, 2 hits
Gene3Di3.30.390.30, 1 hit
3.50.50.60, 2 hits
InterProiView protein in InterPro
IPR036188, FAD/NAD-bd_sf
IPR023753, FAD/NAD-binding_dom
IPR016156, FAD/NAD-linked_Rdtase_dimer_sf
IPR017969, Heavy-metal-associated_CS
IPR006121, HMA_dom
IPR036163, HMA_dom_sf
IPR021179, Mercury_reductase_MerA
IPR001100, Pyr_nuc-diS_OxRdtase
IPR004099, Pyr_nucl-diS_OxRdtase_dimer
IPR012999, Pyr_OxRdtase_I_AS
PfamiView protein in Pfam
PF00403, HMA, 1 hit
PF07992, Pyr_redox_2, 1 hit
PF02852, Pyr_redox_dim, 1 hit
PIRSFiPIRSF000350, Mercury_reductase_MerA, 2 hits
SUPFAMiSSF51905, SSF51905, 1 hit
SSF55008, SSF55008, 2 hits
SSF55424, SSF55424, 1 hit
TIGRFAMsiTIGR02053, MerA, 1 hit
PROSITEiView protein in PROSITE
PS01047, HMA_1, 2 hits
PS50846, HMA_2, 2 hits
PS00076, PYRIDINE_REDOX_1, 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 nameiO69256_BACME
<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: O69256
<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/TrEMBL: August 1, 1998
Last sequence update: August 1, 1998
Last modified: October 7, 2020
This is version 114 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 statusiUnreviewed (UniProtKB/TrEMBL)

<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

PlasmidImported
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