General Information of Target

Target ID LDTP08310
Target Name Phosphatidylcholine:ceramide cholinephosphotransferase 1 (SGMS1)
Gene Name SGMS1
Gene ID 259230
Synonyms
MOB; SMS1; TMEM23; Phosphatidylcholine:ceramide cholinephosphotransferase 1; EC 2.7.8.27; Medulla oblongata-derived protein; Protein Mob; Sphingomyelin synthase 1; Transmembrane protein 23
3D Structure
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2D Sequence (FASTA)
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3D Structure (PDB)
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Sequence
MKEVVYWSPKKVADWLLENAMPEYCEPLEHFTGQDLINLTQEDFKKPPLCRVSSDNGQRL
LDMIETLKMEHHLEAHKNGHANGHLNIGVDIPTPDGSFSIKIKPNGMPNGYRKEMIKIPM
PELERSQYPMEWGKTFLAFLYALSCFVLTTVMISVVHERVPPKEVQPPLPDTFFDHFNRV
QWAFSICEINGMILVGLWLIQWLLLKYKSIISRRFFCIVGTLYLYRCITMYVTTLPVPGM
HFNCSPKLFGDWEAQLRRIMKLIAGGGLSITGSHNMCGDYLYSGHTVMLTLTYLFIKEYS
PRRLWWYHWICWLLSVVGIFCILLAHDHYTVDVVVAYYITTRLFWWYHTMANQQVLKEAS
QMNLLARVWWYRPFQYFEKNVQGIVPRSYHWPFPWPVVHLSRQVKYSRLVNDT
Target Bioclass
Enzyme
Family
Sphingomyelin synthase family
Subcellular location
Golgi apparatus membrane
Function
Major sphingomyelin synthase at the Golgi apparatus. Catalyzes the reversible transfer of phosphocholine moiety in sphingomyelin biosynthesis: in the forward reaction transfers phosphocholine head group of phosphatidylcholine (PC) on to ceramide (CER) to form ceramide phosphocholine (sphingomyelin, SM) and diacylglycerol (DAG) as by-product, and in the reverse reaction transfers phosphocholine from SM to DAG to form PC and CER. The direction of the reaction depends on the levels of CER and DAG in Golgi membranes. Does not use free phosphorylcholine or CDP-choline as donor. Regulates receptor-mediated signal transduction via mitogenic DAG and proapoptotic CER, as well as via SM, a structural component of membrane rafts that serve as platforms for signal transduction and protein sorting. Plays a role in secretory transport via regulation of DAG pool at the Golgi apparatus and its downstream effects on PRKD1.
Uniprot ID
Q86VZ5
Ensemble ID
ENST00000361781.7
HGNC ID
HGNC:29799
ChEMBL ID
CHEMBL3611965

Target Site Mutations in Different Cell Lines

Cell line Mutation details Probe for labeling this protein in this cell
DU145 SNV: p.A20V .
EFO27 SNV: p.T221M .
HEC1 SNV: p.F320L .
Ishikawa (Heraklio) 02 ER Deletion: p.L49CfsTer15 .
LN18 Insertion: p.W305delinsLHVFCLFLPLKKLNFNCTR; p.W306YfsTer12 .
MDAMB468 SNV: p.M260I .

Probe(s) Labeling This Target

ABPP Probe
Click To Hide/Show 2 Probe Related to This Target
Probe name Structure Binding Site(Ratio) Interaction ID Ref
BTD
 Probe Info 
C50(0.72)  LDD2092  [1]
TFBX
 Probe Info 
N.A.  LDD0148  [2]

Competitor(s) Related to This Target

Competitor ID Name Cell line Binding Site(Ratio) Interaction ID Ref
 LDCM0558  2-Cyano-N-phenylacetamide MDA-MB-231 C50(1.10)  LDD2152  [1]
 LDCM0499  Nucleophilic fragment 12b MDA-MB-231 C50(0.72)  LDD2092  [1]
 LDCM0500  Nucleophilic fragment 13a MDA-MB-231 C50(1.07)  LDD2093  [1]
 LDCM0501  Nucleophilic fragment 13b MDA-MB-231 C50(0.86)  LDD2094  [1]
 LDCM0505  Nucleophilic fragment 15b MDA-MB-231 C50(0.98)  LDD2098  [1]
 LDCM0506  Nucleophilic fragment 16a MDA-MB-231 C50(1.10)  LDD2099  [1]
 LDCM0511  Nucleophilic fragment 18b MDA-MB-231 C50(1.04)  LDD2104  [1]
 LDCM0514  Nucleophilic fragment 20a MDA-MB-231 C50(0.94)  LDD2107  [1]
 LDCM0518  Nucleophilic fragment 22a MDA-MB-231 C50(1.13)  LDD2111  [1]
 LDCM0526  Nucleophilic fragment 26a MDA-MB-231 C50(1.78)  LDD2119  [1]
 LDCM0530  Nucleophilic fragment 28a MDA-MB-231 C50(1.08)  LDD2123  [1]
 LDCM0534  Nucleophilic fragment 30a MDA-MB-231 C50(1.18)  LDD2127  [1]
 LDCM0536  Nucleophilic fragment 31 MDA-MB-231 C50(1.05)  LDD2129  [1]
 LDCM0542  Nucleophilic fragment 37 MDA-MB-231 C50(0.60)  LDD2135  [1]
 LDCM0543  Nucleophilic fragment 38 MDA-MB-231 C50(1.62)  LDD2136  [1]
 LDCM0544  Nucleophilic fragment 39 MDA-MB-231 C50(1.18)  LDD2137  [1]
 LDCM0550  Nucleophilic fragment 5a MDA-MB-231 C50(3.78)  LDD2144  [1]
 LDCM0559  Nucleophilic fragment 9b MDA-MB-231 C50(2.00)  LDD2153  [1]

References

1 Nucleophilic covalent ligand discovery for the cysteine redoxome. Nat Chem Biol. 2023 Nov;19(11):1309-1319. doi: 10.1038/s41589-023-01330-5. Epub 2023 May 29.
Mass spectrometry data entry: PXD039908 , PXD029761
2 Chemoproteomic Profiling by Cysteine Fluoroalkylation Reveals Myrocin G as an Inhibitor of the Nonhomologous End Joining DNA Repair Pathway. J Am Chem Soc. 2021 Dec 8;143(48):20332-20342. doi: 10.1021/jacs.1c09724. Epub 2021 Nov 24.
Mass spectrometry data entry: PXD029255