Detail Information of Post-Translational Modifications

General Information of Drug Transporter (DT)
DT ID	DTD0019 Transporter Info
Gene Name	SLC10A1
Transporter Name	Sodium/taurocholate cotransporting polypeptide
Gene ID	6554
UniProt ID	Q14973

Post-Translational Modification of This DT
Overview of SLC10A1 Modification Sites with Functional and Structural Information
Sequence	M E A H N A S A P F N F T L P P N F G K R P T D L A L S V I L V F M L F F I M L S L G C T M E F S K I K A H L W K P K G L A I A L V A Q Y G I M P L T A F V L G K V F R L K N I E A L A I L V C G C S P G G N L S N V F S L A M K G D M N L S I V M T T C S T F C A L G M M P L L L Y I Y S R G I Y D G D L K D K V P Y K G I V I S L V L V L I P C T I G I V L K S K R P Q Y M R Y V I K G G M I I I L L C S V A V T V L S A I N V G K S I M F A M T P L L I A T S S L M P F I G F L L G Y V L S A L F C L N G R C R R T V S M E T G C Q N V Q L C S T I L N V A F P P E V I G P L F F F P L L Y M I F Q L G E G L L L I A I F W C Y E K F K T P K D K T K M I Y T A A T T E E T I P G A L G N G T Y K G E D C S P C T A
PTM type	X-Dephosphorylation X-N-glycosylation X-Phosphorylation X-S-nitrosylation X: Amino Acid

Dephosphorylation
Serine	1 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	Increasing in taurocholate uptake and SLC10A1 retention in the plasma membrane			[1]
Role of PTM	Protein Activity Modulation
Affected Drug/Substrate	Taurocholate	Results for Drug	Incerasing uptake of taurocholate
Modified Residue	Serine	Modified Location	226
Related Enzyme	Protein phosphatase 3 catalytic subunit alpha (PPP3CA)
Studied Phenotype	Liver cancer [ICD11: 2C12]
Experimental Material(s)	Human hepatoma (HuH-7) cells
Experimental Method	Co-Immunoprecipitation
Detailed Description	Dephosphorylation at SLC10A1 Serine 226 have been reported to increase in taurocholate uptake and NTCP retention in the plasma membrane.
N-glycosylation
Asparagine	4 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	Affecting the function of the physiological bile acid SLC10A1			[2]
Role of PTM	Protein Activity Modulation
Affected Drug/Substrate	Bile acids	Results for Drug	Affecting the transport of bile acids
Modified Residue	Asparagine	Modified Location	5
Modified State	Asparagine to Glutamine mutation
Studied Phenotype	Liver cancer [ICD11: 2C12]
Experimental Material(s)	Human liver carcinoma (HepG11) cells
Experimental Method	Co-Immunoprecipitation
Detailed Description	Removal of the N-glycosylation at SLC10A1 Asparagine5 (i.e. Asparagine to Glutamine mutation) have been reported to affect its function of the physiological bile acid transporter.
PTM Phenomenon 2	Affecting the function of the physiological bile acid SLC10A1			[2]
Role of PTM	Protein Activity Modulation
Affected Drug/Substrate	Bile acids	Results for Drug	Affecting the transport of bile acids
Modified Residue	Asparagine	Modified Location	11
Modified State	Asparagine to Glutamine mutation
Studied Phenotype	Liver cancer [ICD11: 2C12]
Experimental Material(s)	Human liver carcinoma (HepG11) cells
Experimental Method	Co-Immunoprecipitation
Detailed Description	Removal of the N-glycosylation at SLC10A1 Asparagine11 (i.e. Asparagine to Glutamine mutation) have been reported to affect its function of the physiological bile acid transporter.
PTM Phenomenon 3	Have the potential to influence SLC10A1			[3]
Role of PTM	Potential impacts
Modified Residue	Asparagine	Modified Location	117
Experimental Method	Co-Immunoprecipitation
Detailed Description	N-linked Glycosylation at SLC10A1 Asparagine 117 has the potential to affect its expression or activity.
PTM Phenomenon 4	Have the potential to influence SLC10A1			[3]
Role of PTM	Potential impacts
Modified Residue	Asparagine	Modified Location	336
Experimental Method	Co-Immunoprecipitation
Detailed Description	N-linked Glycosylation at SLC10A1 Asparagine 336 has the potential to affect its expression or activity.
Phosphorylation
Serine	1 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	Have the potential to influence SLC10A1			[4]
Role of PTM	Potential impacts
Modified Residue	Serine	Modified Location	142
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC10A1 Serine 142 has the potential to affect its expression or activity.
S-nitrosylation
Cysteine	1 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	May contribute to the development of cholestasis by inhibiting SLC10A1 function			[5]
Role of PTM	Protein Activity Modulation
Affected Drug/Substrate	Na(+) taurocholate (TC)	Results for Drug	Decreasing uptake of Na(+) taurocholate (TC)
Modified Residue	Cysteine	Modified Location	96
Studied Phenotype	Liver cancer [ICD11: 2C12]
Experimental Material(s)	Human hepatoma (HuH-7) cells
Experimental Method	Co-Immunoprecipitation
Detailed Description	S-nitrosylation at SLC10A1 Cysteine 96 have been reported to potentially inhibit its function and thus contribute to the development of cholestasis.

References
1	Dephosphorylation of Ser-226 facilitates plasma membrane retention of Ntcp. J Biol Chem. 2005 Sep 30;280(39):33687-92.
2	N-Glycosylation of the Na+-Taurocholate Cotransporting Polypeptide (NTCP) Determines Its Trafficking and Stability and Is Required for Hepatitis B Virus Infection. PLoS One. 2017 Jan 26;12(1):e0170419.
3	dbPTM in 2022: an updated database for exploring regulatory networks and functional associations of protein post-translational modifications. Nucleic Acids Res. 2022 Jan 7;50(D1):D471-D479. (ID: NTCP_HUMAN)
4	Ischemia in tumors induces early and sustained phosphorylation changes in stress kinase pathways but does not affect global protein levels. Mol Cell Proteomics. 2014 Jul;13(7):1690-704.
5	Cysteine 96 of Ntcp is responsible for NO-mediated inhibition of taurocholate uptake. Am J Physiol Gastrointest Liver Physiol. 2013 Oct 1;305(7):G513-9.

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Detail Information of Post-Translational Modifications

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