Gene Gene information from NCBI Gene database.
Entrez ID 4047
Gene name Lanosterol synthase
Gene symbol LSS
Synonyms (NCBI Gene)
APMR4CTRCT44HYPT14OSC
Chromosome 21
Chromosome location 21q22.3
Summary The protein encoded by this gene catalyzes the conversion of (S)-2,3 oxidosqualene to lanosterol. The encoded protein is a member of the terpene cyclase/mutase family and catalyzes the first step in the biosynthesis of cholesterol, steroid hormones, and v
SNPs SNP information provided by dbSNP.
5
SNP ID Visualize variation Clinical significance Consequence
rs749141857 A>C,G Pathogenic Missense variant, coding sequence variant
rs754230211 T>A,C Pathogenic Missense variant, coding sequence variant
rs1249530918 A>G Pathogenic Coding sequence variant, missense variant
rs1260995701 A>G Pathogenic Coding sequence variant, missense variant
rs1569036540 C>T Pathogenic Intron variant, stop gained, coding sequence variant
miRNA miRNA information provided by mirtarbase database.
178
miRTarBase ID miRNA Experiments Reference
MIRT018611 hsa-miR-335-5p Microarray 18185580
MIRT028552 hsa-miR-30a-5p Proteomics 18668040
MIRT047714 hsa-miR-10a-5p CLASH 23622248
MIRT047498 hsa-miR-10b-5p CLASH 23622248
MIRT045991 hsa-miR-125b-5p CLASH 23622248
Transcription factors Transcription factors information provided by TRRUST V2 database.
2
Transcription factor Regulation Reference
HDAC3 Unknown 17925399
YY1 Unknown 17925399
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
26
GO ID Ontology Definition Evidence Reference
GO:0000250 Function Lanosterol synthase activity IBA
GO:0000250 Function Lanosterol synthase activity IEA
GO:0000250 Function Lanosterol synthase activity IGI 7639730
GO:0000250 Function Lanosterol synthase activity IMP 26200341
GO:0000250 Function Lanosterol synthase activity TAS
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
600909 6708 ENSG00000160285
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P48449
Protein name Lanosterol synthase (EC 5.4.99.7) (2,3-epoxysqualene--lanosterol cyclase) (Oxidosqualene--lanosterol cyclase) (OSC) (hOSC)
Protein function Key enzyme in the cholesterol biosynthesis pathway. Catalyzes the cyclization of (S)-2,3 oxidosqualene to lanosterol, a reaction that forms the sterol nucleus (PubMed:14766201, PubMed:26200341, PubMed:7639730). Through the production of lanoster
PDB 1W6J , 1W6K
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF00432 Prenyltrans 122 165 Prenyltransferase and squalene oxidase repeat Repeat
PF00432 Prenyltrans 557 600 Prenyltransferase and squalene oxidase repeat Repeat
PF00432 Prenyltrans 610 658 Prenyltransferase and squalene oxidase repeat Repeat
Tissue specificity TISSUE SPECIFICITY: Widely expressed. Expressed in the hair bulb, the outer root sheath and hair matrix of the hair follicle epithelium. Also detected in dermal papilla, epidermis, sweat glands, sebaceous glands, and blood vessels. {ECO:0000269|PubMed:304
Sequence
MTEGTCLRRRGGPYKTEPATDLGRWRLNCERGRQTWTYLQDERAGREQTGLEAYALGLDT
KNYFKDLPKAHTAFEGALNGMTFYVGLQAEDGHWTGDYGGPLFLLPGLLITCHVARIPLP
AGYREEIVRYLRSVQLPDGGWGLHIEDKSTVFGTALNYVSLRILGVGPDDPDLVRARNIL
HKKGGAVAIPSWGKFWLAVLNVYSWEGLNTLFPEMWLFPDWAPAHPSTLWCHCRQVYLPM
SYCYAVRLSAAEDPLVQSLRQELYVEDFASIDWLAQRNNVAPDELYTPHSWLLRVVYALL
NLYEHHHSAHLRQRAVQKLYEHIVADDRFTKSISIGPISKTINMLVRWYVDGPASTAFQE
HVSRIPDYLWMGLDGMKMQGTNGSQIWDTAFAIQALLEAGGHHRPEFSSCLQKAHEFLRL
SQVPDNPPDYQKYYRQMRKGGFSFSTLDCGWIVSDCTAEALKAVLLLQEKCPHVTEHIPR
ERLCDAVAVLLNMRNPDGGFATYETKRGGHLLELLNPSEVFGDIMIDYTYVECTSAVMQA
LKYFHKRFPEHRAAEIRETLTQGLEFCRRQQRADGSWEGSWGVCFTYGTWFGLEAFACMG
QTYRDGTACAEVSRACDFLLSRQMADGGWGEDFESCEERRYLQSAQSQIHNTCWAMMGLM
AVRHPDIEAQERGVRCLLEKQLPNGDWPQENIAGVFNKSCAISYTSYRNIFPIWALGRFS
QLYPERALAGHP
Sequence length 732
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Steroid biosynthesis
Metabolic pathways
  Cholesterol biosynthesis
Activation of gene expression by SREBF (SREBP)
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
31
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Alopecia-intellectual disability syndrome 4 Likely pathogenic; Pathogenic rs2123758710, rs987857709, rs745734847, rs142081800, rs765496350, rs2517263486, rs377016169, rs1347205213, rs1569039353, rs1569036540, rs754230211, rs148141905, rs746562872, rs570157673, rs763705074
View all (1 more)
RCV001421019
RCV002272485
RCV002272486
RCV005397295
RCV002286513
View all (11 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Cataract 44 Likely pathogenic; Pathogenic rs142081800, rs864622780, rs1435018884, rs749141857, rs764098604, rs1249530918 RCV005397295
RCV000207005
RCV003990806
RCV000735947
RCV000735948
View all (1 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Hypotrichosis 14 Likely pathogenic; Pathogenic rs987857709, rs745734847, rs142081800, rs1249530918, rs1260995701, rs1569039353 RCV001663398
RCV001663399
RCV005397295
RCV000735949
RCV000735950
View all (1 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Acute myeloid leukemia Benign; Uncertain significance ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
AUTOSOMAL RECESSIVE PALMOPLANTAR KERATODERMA AND CONGENITAL ALOPECIA GenCC, Orphanet
GenCC, Orphanet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
CATARACT-ALOPECIA-SCLERODACTYLY SYNDROME Disgenet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Cervical cancer Benign; Conflicting classifications of pathogenicity ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations