Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Entry version 67 (31 Jul 2019)
Sequence version 1 (21 Dec 2004)
Previous versions | rss
Other tutorials and videosHelp videoFeedback
Protein

Delta(14)-sterol reductase LBR

Gene

LBR

Organism
Pongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii)
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 transcript 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 reduction of the C14-unsaturated bond of lanosterol, as part of the metabolic pathway leading to cholesterol biosynthesis (By similarity). Plays a critical role in myeloid cell cholesterol biosynthesis which is essential to both myeloid cell growth and functional maturation (By similarity). Mediates the activation of NADPH oxidases, perhaps by maintaining critical levels of cholesterol required for membrane lipid raft formation during neutrophil differentiation (By similarity). Anchors the lamina and the heterochromatin to the inner nuclear membrane (By similarity).By similarity

<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 the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: cholesterol biosynthesis

This protein is involved in the pathway cholesterol biosynthesis, which is part of Steroid biosynthesis.
View all proteins of this organism that are known to be involved in the pathway cholesterol biosynthesis and in Steroid biosynthesis.

<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 functionDNA-binding, Oxidoreductase, Receptor
Biological processCholesterol biosynthesis, Cholesterol metabolism, Lipid biosynthesis, Lipid metabolism, Steroid biosynthesis, Steroid metabolism, Sterol biosynthesis, Sterol metabolism

Enzyme and pathway databases

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

More...
UniPathwayi
UPA00063

<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:
Delta(14)-sterol reductase LBR (EC:1.3.1.70By similarity)
Short name:
Delta-14-SR
Alternative name(s):
3-beta-hydroxysterol Delta (14)-reductaseBy similarity
C-14 sterol reductase
Short name:
C14SR
Integral nuclear envelope inner membrane proteinBy similarity
Lamin-B receptorBy similarity
Sterol C14-reductase
<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:LBR
<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>OrganismiPongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii)
<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 identifieri9601 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaePongo
<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
  • UP000001595 <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: Unplaced

<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

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the subcellular compartment where each non-membrane region of a membrane-spanning protein is found.<p><a href='/help/topo_dom' target='_top'>More...</a></p>Topological domaini1 – 211NuclearSequence analysisAdd BLAST211
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei212 – 232HelicalSequence analysisAdd BLAST21
Transmembranei258 – 278HelicalSequence analysisAdd BLAST21
Transmembranei299 – 319HelicalSequence analysisAdd BLAST21
Transmembranei326 – 346HelicalSequence analysisAdd BLAST21
Transmembranei415 – 435HelicalSequence analysisAdd BLAST21
Transmembranei447 – 467HelicalSequence analysisAdd BLAST21
Transmembranei481 – 501HelicalSequence analysisAdd BLAST21
Transmembranei561 – 581HelicalSequence analysisAdd BLAST21

Keywords - Cellular componenti

Cytoplasm, Endoplasmic reticulum, Membrane, Nucleus

<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_00002279101 – 615Delta(14)-sterol reductase LBRAdd BLAST615

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei55N6-acetyllysineBy similarity1
Modified residuei58PhosphothreonineBy similarity1
Modified residuei59PhosphoserineBy similarity1
Modified residuei67PhosphoserineBy similarity1
Modified residuei71Phosphoserine; by CDK1By similarity1
Modified residuei86Phosphoserine; by CDK1By similarity1
Modified residuei97PhosphoserineBy similarity1
Modified residuei99PhosphoserineBy similarity1
Modified residuei118PhosphothreonineBy similarity1
Modified residuei128PhosphoserineBy similarity1
Modified residuei200PhosphothreonineBy similarity1
Modified residuei594N6-acetyllysineBy similarity1
Modified residuei601N6-acetyllysineBy similarity1

<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

Phosphorylated by CDK1 in mitosis when the inner nuclear membrane breaks down into vesicles that dissociate from the lamina and the chromatin (By similarity). It is phosphorylated by different protein kinases in interphase when the membrane is associated with these structures (By similarity). Phosphorylation of LBR and HP1 proteins may be responsible for some of the alterations in chromatin organization and nuclear structure which occur at various times during the cell cycle (By similarity). Phosphorylated by SRPK1 (By similarity). In late anaphase LBR is dephosphorylated, probably by PP1 and/or PP2A, allowing reassociation with chromatin (By similarity).By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q5R7H4

<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

Interacts with CBX5 (By similarity).

Interacts with DNA (By similarity). Interaction with DNA is sequence independent with higher affinity for supercoiled and relaxed circular DNA than linear DNA (By similarity).

Interacts with lamin B (By similarity).

By similarity

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
9601.ENSPPYP00000000176

<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
Q5R7H4

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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">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>Domaini1 – 62TudorAdd BLAST62

<p>This subsection of the ‘Family and domains’ section provides general information on the biological role of a domain. The term ‘domain’ is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The Tudor domain may not recognize methylation marks, but rather bind unassembled free histone H3.By similarity

<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 ERG4/ERG24 family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG1435 Eukaryota
ENOG410XP67 LUCA

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q5R7H4

KEGG Orthology (KO)

More...
KOi
K19532

Database of Orthologous Groups

More...
OrthoDBi
532774at2759

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR001171 Ergosterol_biosynth_ERG4_ERG24
IPR019023 Lamin-B_rcpt_of_tudor
IPR018083 Sterol_reductase_CS
IPR002999 Tudor

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01222 ERG4_ERG24, 1 hit
PF09465 LBR_tudor, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00333 TUDOR, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS01017 STEROL_REDUCT_1, 1 hit
PS01018 STEROL_REDUCT_2, 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.

Q5R7H4-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MPSRKFADGE VVRGRWPGSS LYYEVEILSH DSASQLYTVK YKDGTELELK
60 70 80 90 100
ENDIKPLTSF RQRKGGSTSS SPSRRRGSRS RSRSRSPGRP PKSARRSASA
110 120 130 140 150
SHQADIKEAR REVEVKLTPL ILKPFGNSIS RYNGEPEHIE RNDVPHKNTQ
160 170 180 190 200
EKFNLSQESS YIATQCSLRP KREEVKLKEI DSKEEKFVAK ELAVRTFEVT
210 220 230 240 250
PIRAKDLEFG GVPGVFLIMF GLPVFLFLLL LMCKQKDPSL LNFPPPLPAL
260 270 280 290 300
YELWETRVFG VYLLWFLIQV VFYLLPIGKV VEGTPLIDGR RLKYRLNGFY
310 320 330 340 350
AFILTSAVIG TSLFQGVEFH YVYSHFLQFA LAATVFCVVL SVYLYMRSLK
360 370 380 390 400
APRNDLSPAS SGNAVYDFFI GRELNPRIGT FDLKYFCELR PGLIGWVVIN
410 420 430 440 450
LVMLLAEMKI QDRAVPSLAM ILVNSFQLLY VVDALWNEEA LLTTMDIIHD
460 470 480 490 500
GFGFMLAFGD LVWVPFIYSF QAFYLVSHPN EVSWPMASLI IVLKFCGYVI
510 520 530 540 550
FRGANSQKNA FRKNPSDPKL AHLKTIHTST GKNLLVSGWW GFARHPNYLG
560 570 580 590 600
DLIMALAWSL ACGFNHILPY FYIIYFTMLL VHREARDEYH CKKKYGVAWE
610
KYCQRVPYRI FPYIY
Length:615
Mass (Da):70,590
Last modified:December 21, 2004 - 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:i7840729DA0AF1D09
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
CR860142 mRNA Translation: CAH92286.1

NCBI Reference Sequences

More...
RefSeqi
NP_001127533.1, NM_001134061.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
100174610

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
pon:100174610

<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
CR860142 mRNA Translation: CAH92286.1
RefSeqiNP_001127533.1, NM_001134061.1

3D structure databases

SMRiQ5R7H4
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9601.ENSPPYP00000000176

Proteomic databases

PRIDEiQ5R7H4

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi100174610
KEGGipon:100174610

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
3930

Phylogenomic databases

eggNOGiKOG1435 Eukaryota
ENOG410XP67 LUCA
InParanoidiQ5R7H4
KOiK19532
OrthoDBi532774at2759

Enzyme and pathway databases

UniPathwayiUPA00063

Family and domain databases

InterProiView protein in InterPro
IPR001171 Ergosterol_biosynth_ERG4_ERG24
IPR019023 Lamin-B_rcpt_of_tudor
IPR018083 Sterol_reductase_CS
IPR002999 Tudor
PfamiView protein in Pfam
PF01222 ERG4_ERG24, 1 hit
PF09465 LBR_tudor, 1 hit
SMARTiView protein in SMART
SM00333 TUDOR, 1 hit
PROSITEiView protein in PROSITE
PS01017 STEROL_REDUCT_1, 1 hit
PS01018 STEROL_REDUCT_2, 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 nameiLBR_PONAB
<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: Q5R7H4
<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: March 21, 2006
Last sequence update: December 21, 2004
Last modified: July 31, 2019
This is version 67 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, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again