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Entry version 109 (31 Jul 2019)
Sequence version 1 (01 Jan 1998)
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Protein

Smoothened homolog

Gene

SMO

Organism
Gallus gallus (Chicken)
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 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

G protein-coupled receptor that probably associates with the patched protein (PTCH) to transduce the hedgehog's proteins signal. Binding of sonic hedgehog (SHH) to its receptor patched is thought to prevent normal inhibition by patched of smoothened (SMO).

<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 functionDevelopmental protein, G-protein coupled receptor, Receptor, Transducer

<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:
Smoothened homolog
Short name:
SMO
<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:SMO
Synonyms:SMOH
<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>OrganismiGallus gallus (Chicken)
<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 identifieri9031 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiArchelosauriaArchosauriaDinosauriaSaurischiaTheropodaCoelurosauriaAvesNeognathaeGalloanseraeGalliformesPhasianidaePhasianinaeGallus
<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
  • UP000000539 <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 domaini16 – 201ExtracellularSequence analysisAdd BLAST186
<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>Transmembranei202 – 222Helical; Name=1Sequence analysisAdd BLAST21
Topological domaini223 – 231CytoplasmicSequence analysis9
Transmembranei232 – 252Helical; Name=2Sequence analysisAdd BLAST21
Topological domaini253 – 283ExtracellularSequence analysisAdd BLAST31
Transmembranei284 – 304Helical; Name=3Sequence analysisAdd BLAST21
Topological domaini305 – 327CytoplasmicSequence analysisAdd BLAST23
Transmembranei328 – 348Helical; Name=4Sequence analysisAdd BLAST21
Topological domaini349 – 371ExtracellularSequence analysisAdd BLAST23
Transmembranei372 – 392Helical; Name=5Sequence analysisAdd BLAST21
Topological domaini393 – 420CytoplasmicSequence analysisAdd BLAST28
Transmembranei421 – 440Helical; Name=6Sequence analysisAdd BLAST20
Topological domaini441 – 493ExtracellularSequence analysisAdd BLAST53
Transmembranei494 – 514Helical; Name=7Sequence analysisAdd BLAST21
Topological domaini515 – 794CytoplasmicSequence analysisAdd BLAST280

Keywords - Cellular componenti

Membrane

<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 denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei‹1 – 15Sequence analysisAdd BLAST›15
<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_000001301816 – 794Smoothened homologAdd BLAST779

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi25N-linked (GlcNAc...) asparagineSequence analysis1
<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 bondi40 ↔ 104PROSITE-ProRule annotation
Disulfide bondi48 ↔ 97PROSITE-ProRule annotation
Disulfide bondi88 ↔ 124PROSITE-ProRule annotation
Disulfide bondi117 ↔ 139PROSITE-ProRule annotation
Glycosylationi158N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi163 ↔ 183PROSITE-ProRule annotation
Disulfide bondi187 ↔ 264PROSITE-ProRule annotation
Glycosylationi278N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi283 ↔ 359PROSITE-ProRule annotation
Disulfide bondi459 ↔ 476PROSITE-ProRule annotation
Glycosylationi462N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
O42224

<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

Homodimer.

By similarity

GO - Molecular functioni

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
9031.ENSGALP00000039562

<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
O42224

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>Domaini35 – 151FZPROSITE-ProRule annotationAdd BLAST117

<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

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000252964

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
O42224

Database of Orthologous Groups

More...
OrthoDBi
509772at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
O42224

Family and domain databases

Conserved Domains Database

More...
CDDi
cd07451 CRD_SMO, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.2000.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR015526 Frizzled/SFRP
IPR000539 Frizzled/Smoothened_TM
IPR020067 Frizzled_dom
IPR036790 Frizzled_dom_sf
IPR017981 GPCR_2-like
IPR026544 SMO
IPR041771 SMO_CRD

The PANTHER Classification System

More...
PANTHERi
PTHR11309 PTHR11309, 1 hit
PTHR11309:SF35 PTHR11309:SF35, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01534 Frizzled, 1 hit
PF01392 Fz, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00489 FRIZZLED

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00063 FRI, 1 hit
SM01330 Frizzled, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF63501 SSF63501, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50038 FZ, 1 hit
PS50261 G_PROTEIN_RECEP_F2_4, 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: Fragment.

<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 in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

O42224-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
GPCWLWALAL GLALGPRRCP AAPLNASAAP PERCRRPAAC ERLRFGSCLG
60 70 80 90 100
SALPYAHTST LLAADSGSQE EAHGKLLLWS GLRNAPRCWD VIQPLLCAVY
110 120 130 140 150
MPKCEDGQVE LPSQTLCQAT RAPCTIVERE RGWPDFLKCT PDRFPEGCPN
160 170 180 190 200
EVQNIKFNSS GQCEAPLVRT YNPKSWYEDV EGCGIQCQNP LFTETEHREM
210 220 230 240 250
HVYIAFSSVT ISCTFFTLAT FVADWRNSNR YPAVILFYVN ACFFVGSIGC
260 270 280 290 300
VAQFMDGARD EIVCRADGTM RLGEPTSNET LSCVIIFVIV YYSLMSGVIW
310 320 330 340 350
FVMLTYAWHT SFKALGTTYQ PLLGKTSYFH LITWSIPFVL TVAILAVAQV
360 370 380 390 400
DGDSVSGICF VGYKNYRYRA GFVLAPIGLV LIVGGYFLIR GVMTLFSIKS
410 420 430 440 450
NHPGLLSEKA ASKINETMLR LGIFGFLAFG FVFITFGCHF YDFFNQAEWE
460 470 480 490 500
RSFREYVLCE ANVTIATQTN KPIPECEIKN RPSLLVEKIN LFAMFGTGIS
510 520 530 540 550
MSTWVWTKAT LLIWKRTWCR LTGQSDDQPK RIKKSKMIAK AFSKRKELLR
560 570 580 590 600
DPGRELSFSM HTVSHDGPVA GLAFDINEPS ADVSSAWAQH VTKMVARRGA
610 620 630 640 650
ILPQDVSVTP VATPVPPEER SNLWVVEADV SPELQKRSRK KKRRKKKKEE
660 670 680 690 700
VCPERRAGLS VAPLTPSSVP RLPRLPQQPC LVAIPRHRGD TFIPTVLPGL
710 720 730 740 750
SNGAGGLWDG RRRAHVPHFI TNPFCPESGS PEDEENPGPS VGHRQHNGGR
760 770 780 790
RWPPEPLPGG SGVTRTRGRR AGLAPIHSRT NLVNAELLDA DLDF
Length:794
Mass (Da):88,255
Last modified:January 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:iCE71AE9864A6C0CB
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section is used for sequence fragments to indicate that the residue at the extremity of the sequence is not the actual terminal residue in the complete protein sequence.<p><a href='/help/non_ter' target='_top'>More...</a></p>Non-terminal residuei11

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
AF019977 mRNA Translation: AAB84389.1

<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
AF019977 mRNA Translation: AAB84389.1

3D structure databases

SMRiO42224
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9031.ENSGALP00000039562

Protein family/group databases

Information system for G protein-coupled receptors (GPCRs)

More...
GPCRDBi
Search...

Proteomic databases

PRIDEiO42224

Phylogenomic databases

HOGENOMiHOG000252964
InParanoidiO42224
OrthoDBi509772at2759
PhylomeDBiO42224

Family and domain databases

CDDicd07451 CRD_SMO, 1 hit
Gene3Di1.10.2000.10, 1 hit
InterProiView protein in InterPro
IPR015526 Frizzled/SFRP
IPR000539 Frizzled/Smoothened_TM
IPR020067 Frizzled_dom
IPR036790 Frizzled_dom_sf
IPR017981 GPCR_2-like
IPR026544 SMO
IPR041771 SMO_CRD
PANTHERiPTHR11309 PTHR11309, 1 hit
PTHR11309:SF35 PTHR11309:SF35, 1 hit
PfamiView protein in Pfam
PF01534 Frizzled, 1 hit
PF01392 Fz, 1 hit
PRINTSiPR00489 FRIZZLED
SMARTiView protein in SMART
SM00063 FRI, 1 hit
SM01330 Frizzled, 1 hit
SUPFAMiSSF63501 SSF63501, 1 hit
PROSITEiView protein in PROSITE
PS50038 FZ, 1 hit
PS50261 G_PROTEIN_RECEP_F2_4, 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 nameiSMO_CHICK
<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: O42224
<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: May 30, 2000
Last sequence update: January 1, 1998
Last modified: July 31, 2019
This is version 109 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. SIMILARITY comments
    Index of protein domains and families
  2. 7-transmembrane G-linked receptors
    List of 7-transmembrane G-linked receptor entries
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