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Entry version 138 (13 Nov 2019)
Sequence version 1 (01 Oct 1996)
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Protein

Aldo-keto reductase family 1 member C18

Gene

Akr1c18

Organism
Rattus norvegicus (Rat)
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

Catalyzes the conversion of progesterone into 20-alpha-dihydroprogesterone (20 alpha-OHP).

<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

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 sitei50NADPBy similarity1
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei54Important for substrate specificityBy similarity1
<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 sitei55Proton donorBy similarity1
Sitei84Lowers pKa of active site TyrBy similarity1
Binding sitei117SubstrateBy similarity1
Binding sitei190NADPBy similarity1

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 bindingi20 – 24NADPBy similarity5
Nucleotide bindingi166 – 167NADPBy similarity2
Nucleotide bindingi216 – 221NADPBy similarity6
Nucleotide bindingi270 – 280NADPBy similarityAdd BLAST11

<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
LigandNADP

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-RNO-193368 Synthesis of bile acids and bile salts via 7alpha-hydroxycholesterol
R-RNO-193775 Synthesis of bile acids and bile salts via 24-hydroxycholesterol
R-RNO-193807 Synthesis of bile acids and bile salts via 27-hydroxycholesterol
R-RNO-975634 Retinoid metabolism and transport

<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:
Aldo-keto reductase family 1 member C18 (EC:1.1.-.-)
Alternative name(s):
20-alpha-hydroxysteroid dehydrogenase (EC:1.1.1.149)
Short name:
20-alpha-HSD
HSD1
<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:Akr1c18
<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>OrganismiRattus norvegicus (Rat)
<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 identifieri10116 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeRattus
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000002494 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 17

Organism-specific databases

Rat genome database

More...
RGDi
708428 Akr1c18

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm

<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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001246501 – 323Aldo-keto reductase family 1 member C18Add BLAST323

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

The N-terminus is blocked.

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
P51652

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P51652

PRoteomics IDEntifications database

More...
PRIDEi
P51652

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified ‘at protein level’. <br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Corpus luteum (large luteal cells).

<p>This subsection of the ‘Expression’ section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified ‘at the protein level’.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

Remains repressed throughout pregnancy and becomes highly and rapidly expressed before parturition.

<p>This subsection of the ‘Expression’ section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Repressed by prolactin.

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSRNOG00000017531 Expressed in 6 organ(s), highest expression level in liver

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
P51652 RN

<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

Monomer.

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
10116.ENSRNOP00000023739

<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
P51652

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 aldo/keto reductase family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG1577 Eukaryota
COG0656 LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000153677

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P51652

KEGG Orthology (KO)

More...
KOi
K05295

Identification of Orthologs from Complete Genome Data

More...
OMAi
IEIHPYN

Database of Orthologous Groups

More...
OrthoDBi
1016440at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P51652

TreeFam database of animal gene trees

More...
TreeFami
TF106492

Family and domain databases

Conserved Domains Database

More...
CDDi
cd06660 Aldo_ket_red, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.20.20.100, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR018170 Aldo/ket_reductase_CS
IPR020471 Aldo/keto_reductase
IPR023210 NADP_OxRdtase_dom
IPR036812 NADP_OxRdtase_dom_sf

The PANTHER Classification System

More...
PANTHERi
PTHR11732 PTHR11732, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00248 Aldo_ket_red, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF000097 AKR, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00069 ALDKETRDTASE

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF51430 SSF51430, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00798 ALDOKETO_REDUCTASE_1, 1 hit
PS00062 ALDOKETO_REDUCTASE_2, 1 hit
PS00063 ALDOKETO_REDUCTASE_3, 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.

P51652-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MNSKIQKMEL NDGHSIPVLG FGTYATEENL RKKSMESTKI AIDVGFRHID
60 70 80 90 100
CSHLYQNEEE IGQAIVSKIE DGTVKREDIF YTSKLWSTSH RPELVRPSLE
110 120 130 140 150
NSLRKLNLDY VDLYLIHFPV SLKPGDELLP QDEHGNLILD TVDLCDTWEA
160 170 180 190 200
MEKCKDAGLA KSIGVSNFNR RQLEKILNKP GLKHRPVCNQ VECHLYLNQS
210 220 230 240 250
KLLAYCKMND IVLVAYGALG TQRYKYCINE DTPVLLDDPI LCTMAKKYKR
260 270 280 290 300
TPALIALRYQ LERGIVTLVK SFNEERIREN LQVFDFQLAS DDMEILDNLD
310 320
RNLRYFPANM FKAHPNFPFS DEY
Length:323
Mass (Da):37,300
Last modified:October 1, 1996 - 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:iD14270961515195E
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 conflicti242C → L AA sequence (PubMed:8194472).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
L32601 mRNA Translation: AAA40601.1
D14424 mRNA Translation: BAA03317.1
BC100248 mRNA Translation: AAI00249.1

Protein sequence database of the Protein Information Resource

More...
PIRi
JC2330

NCBI Reference Sequences

More...
RefSeqi
NP_612519.1, NM_138510.1

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSRNOT00000023739; ENSRNOP00000023739; ENSRNOG00000017531

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
171516

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
rno:171516

UCSC genome browser

More...
UCSCi
RGD:708428 rat

<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
L32601 mRNA Translation: AAA40601.1
D14424 mRNA Translation: BAA03317.1
BC100248 mRNA Translation: AAI00249.1
PIRiJC2330
RefSeqiNP_612519.1, NM_138510.1

3D structure databases

SMRiP51652
ModBaseiSearch...

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000023739

Proteomic databases

jPOSTiP51652
PaxDbiP51652
PRIDEiP51652

Genome annotation databases

EnsembliENSRNOT00000023739; ENSRNOP00000023739; ENSRNOG00000017531
GeneIDi171516
KEGGirno:171516
UCSCiRGD:708428 rat

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
8644
RGDi708428 Akr1c18

Phylogenomic databases

eggNOGiKOG1577 Eukaryota
COG0656 LUCA
GeneTreeiENSGT00940000153677
InParanoidiP51652
KOiK05295
OMAiIEIHPYN
OrthoDBi1016440at2759
PhylomeDBiP51652
TreeFamiTF106492

Enzyme and pathway databases

ReactomeiR-RNO-193368 Synthesis of bile acids and bile salts via 7alpha-hydroxycholesterol
R-RNO-193775 Synthesis of bile acids and bile salts via 24-hydroxycholesterol
R-RNO-193807 Synthesis of bile acids and bile salts via 27-hydroxycholesterol
R-RNO-975634 Retinoid metabolism and transport

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P51652

Gene expression databases

BgeeiENSRNOG00000017531 Expressed in 6 organ(s), highest expression level in liver
GenevisibleiP51652 RN

Family and domain databases

CDDicd06660 Aldo_ket_red, 1 hit
Gene3Di3.20.20.100, 1 hit
InterProiView protein in InterPro
IPR018170 Aldo/ket_reductase_CS
IPR020471 Aldo/keto_reductase
IPR023210 NADP_OxRdtase_dom
IPR036812 NADP_OxRdtase_dom_sf
PANTHERiPTHR11732 PTHR11732, 1 hit
PfamiView protein in Pfam
PF00248 Aldo_ket_red, 1 hit
PIRSFiPIRSF000097 AKR, 1 hit
PRINTSiPR00069 ALDKETRDTASE
SUPFAMiSSF51430 SSF51430, 1 hit
PROSITEiView protein in PROSITE
PS00798 ALDOKETO_REDUCTASE_1, 1 hit
PS00062 ALDOKETO_REDUCTASE_2, 1 hit
PS00063 ALDOKETO_REDUCTASE_3, 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 nameiAKC1H_RAT
<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: P51652
Secondary accession number(s): Q498E4
<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: October 1, 1996
Last sequence update: October 1, 1996
Last modified: November 13, 2019
This is version 138 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)
Annotation programChordata 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

Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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