Detail Information of Post-Translational Modifications

General Information of Drug Transporter (DT)
DT ID	DTD0366 Transporter Info
Gene Name	SLC44A4
Transporter Name	Choline transporter-like protein 4
Gene ID	80736
UniProt ID	Q53GD3

Post-Translational Modification of This DT
Overview of SLC44A4 Modification Sites with Functional and Structural Information
Sequence	M G G K Q R D E D D E A Y G K P V K Y D P S F R G P I K N R S C T D V I C C V L F L L F I L G Y I V V G I V A W L Y G D P R Q V L Y P R N S T G A Y C G M G E N K D K P Y L L Y F N I F S C I L S S N I I S V A E N G L Q C P T P Q V C V S S C P E D P W T V G K N E F S Q T V G E V F Y T K N R N F C L P G V P W N M T V I T S L Q Q E L C P S F L L P S A P A L G R C F P W T N V T P P A L P G I T N D T T I Q Q G I S G L I D S L N A R D I S V K I F E D F A Q S W Y W I L V A L G V A L V L S L L F I L L L R L V A G P L V L V L I L G V L G V L A Y G I Y Y C W E E Y R V L R D K G A S I S Q L G F T T N L S A Y Q S V Q E T W L A A L I V L A V L E A I L L L M L I F L R Q R I R I A I A L L K E A S K A V G Q M M S T M F Y P L V T F V L L L I C I A Y W A M T A L Y L A T S G Q P Q Y V L W A S N I S S P G C E K V P I N T S C N P T A H L V N S S C P G L M C V F Q G Y S S K G L I Q R S V F N L Q I Y G V L G L F W T L N W V L A L G Q C V L A G A F A S F Y W A F H K P Q D I P T F P L I S A F I R T L R Y H T G S L A F G A L I L T L V Q I A R V I L E Y I D H K L R G V Q N P V A R C I M C C F K C C L W C L E K F I K F L N R N A Y I M I A I Y G K N F C V S A K N A F M L L M R N I V R V V V L D K V T D L L L F F G K L L V V G G V G V L S F F F F S G R I P G L G K D F K S P H L N Y Y W L P I M T S I L G A Y V I A S G F F S V F G M C V D T L F L C F L E D L E R N N G S L D R P Y Y M S K S L L K I L G K K N E A P P D N K K R K K
PTM type	X-Acetylation X-N-glycosylation X-Oxidation X-Phosphorylation X: Amino Acid

Acetylation
Lysine	1 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	Have the potential to influence SLC44A4			[1]
Role of PTM	Potential impacts
Modified Residue	Lysine	Modified Location	575
Experimental Method	Co-Immunoprecipitation
Detailed Description	Acetylation at SLC44A4 Lysine 575 has the potential to affect its expression or activity.
N-glycosylation
Asparagine	7 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	Affecting the conformation of the SLC44A4 and/or its interaction with its ligand			[2]
Role of PTM	Conformational Change
Affected Drug/Substrate	Thiamine pyrophosphate	Results for Drug	Affecting uptake of thiamine pyrophosphate
Modified Residue	Asparagine	Modified Location	69
Experimental Material(s)	Retinal pigment epithelia (ARPE19) cells
Experimental Method	Co-Immunoprecipitation
Detailed Description	Glycosylation at SLC44A4 Asparagine 69 have been reported to affect its conformation and/or interaction with its ligand.
PTM Phenomenon 2	Affecting the conformation of the SLC44A4 and/or its interaction with its ligand			[2]
Role of PTM	Conformational Change
Affected Drug/Substrate	Thiamine pyrophosphate	Results for Drug	Affecting uptake of thiamine pyrophosphate
Modified Residue	Asparagine	Modified Location	155
Experimental Material(s)	Retinal pigment epithelia (ARPE19) cells
Experimental Method	Co-Immunoprecipitation
Detailed Description	Glycosylation at SLC44A4 Asparagine 155 have been reported to affect its conformation and/or interaction with its ligand.
PTM Phenomenon 3	Affecting the conformation of the SLC44A4 and/or its interaction with its ligand			[2]
Role of PTM	Conformational Change
Affected Drug/Substrate	Thiamine pyrophosphate	Results for Drug	Affecting uptake of thiamine pyrophosphate
Modified Residue	Asparagine	Modified Location	393
Experimental Material(s)	Retinal pigment epithelia (ARPE19) cells
Experimental Method	Co-Immunoprecipitation
Detailed Description	Glycosylation at SLC44A4 Asparagine 393 have been reported to affect its conformation and/or interaction with its ligand.
PTM Phenomenon 4	Have the potential to influence SLC44A4			[2]
Role of PTM	Potential impacts
Modified Residue	Asparagine	Modified Location	197
Experimental Method	Co-Immunoprecipitation
Detailed Description	N-linked Glycosylation at SLC44A4 Asparagine 197 has the potential to affect its expression or activity.
PTM Phenomenon 5	Have the potential to influence SLC44A4			[3]
Role of PTM	Potential impacts
Modified Residue	Asparagine	Modified Location	298
Experimental Method	Co-Immunoprecipitation
Detailed Description	N-linked Glycosylation at SLC44A4 Asparagine 298 has the potential to affect its expression or activity.
PTM Phenomenon 6	Have the potential to influence SLC44A4			[3]
Role of PTM	Potential impacts
Modified Residue	Asparagine	Modified Location	405
Experimental Method	Co-Immunoprecipitation
Detailed Description	N-linked Glycosylation at SLC44A4 Asparagine 405 has the potential to affect its expression or activity.
PTM Phenomenon 7	Have the potential to influence SLC44A4			[2]
Role of PTM	Potential impacts
Modified Residue	Asparagine	Modified Location	416
Experimental Method	Co-Immunoprecipitation
Detailed Description	N-linked Glycosylation at SLC44A4 Asparagine 416 has the potential to affect its expression or activity.
Oxidation
Cystine	1 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	Have the potential to influence SLC44A4			[4]
Role of PTM	Potential impacts
Modified Residue	Cystine	Modified Location	547
Experimental Method	Co-Immunoprecipitation
Detailed Description	Oxidation at SLC44A4 Cystine 547 has the potential to affect its expression or activity.
Phosphorylation
Serine	2 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	Have the potential to influence SLC44A4			[5]
Role of PTM	Potential impacts
Modified Residue	Serine	Modified Location	688
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC44A4 Serine 688 has the potential to affect its expression or activity.
PTM Phenomenon 2	Have the potential to influence SLC44A4			[5] , [6]
Role of PTM	Potential impacts
Modified Residue	Serine	Modified Location	690
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC44A4 Serine 690 has the potential to affect its expression or activity.
Threonine	2 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	Have the potential to influence SLC44A4			[7]
Role of PTM	Potential impacts
Modified Residue	Threonine	Modified Location	126
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC44A4 Threonine 126 has the potential to affect its expression or activity.
PTM Phenomenon 2	Have the potential to influence SLC44A4			[7]
Role of PTM	Potential impacts
Modified Residue	Threonine	Modified Location	142
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC44A4 Threonine 142 has the potential to affect its expression or activity.
Tyrosine	5 PTM Phenomena Related to This Residue		Click to Show/Hide the Full List
PTM Phenomenon 1	Have the potential to influence SLC44A4			[8] , [9]
Role of PTM	Potential impacts
Modified Residue	Tyrosine	Modified Location	13
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC44A4 Tyrosine 13 has the potential to affect its expression or activity.
PTM Phenomenon 2	Have the potential to influence SLC44A4			[7]
Role of PTM	Potential impacts
Modified Residue	Tyrosine	Modified Location	141
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC44A4 Tyrosine 141 has the potential to affect its expression or activity.
PTM Phenomenon 3	Have the potential to influence SLC44A4			[10]
Role of PTM	Potential impacts
Modified Residue	Tyrosine	Modified Location	560
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC44A4 Tyrosine 560 has the potential to affect its expression or activity.
PTM Phenomenon 4	Have the potential to influence SLC44A4			[5] , [8]
Role of PTM	Potential impacts
Modified Residue	Tyrosine	Modified Location	685
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC44A4 Tyrosine 685 has the potential to affect its expression or activity.
PTM Phenomenon 5	Have the potential to influence SLC44A4			[5] , [8]
Role of PTM	Potential impacts
Modified Residue	Tyrosine	Modified Location	686
Experimental Method	Co-Immunoprecipitation
Detailed Description	Phosphorylation at SLC44A4 Tyrosine 686 has the potential to affect its expression or activity.

References
1	Propofol pharmacokinetics. Pediatr Crit Care Med. 2003 Jan;4(1):124-5.
2	The human colonic thiamine pyrophosphate transporter (hTPPT) is a glycoprotein and N-linked glycosylation is important for its function. Biochim Biophys Acta. 2016 Apr;1858(4):866-71.
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: CTL4_HUMAN)
4	Identifying Functional Cysteine Residues in the Mitochondria. ACS Chem Biol. 2017 Apr 21;12(4):947-957.
5	Defeating Major Contaminants in Fe3+- Immobilized Metal Ion Affinity Chromatography (IMAC) Phosphopeptide Enrichment. Mol Cell Proteomics. 2018 May;17(5):1028-1034.
6	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.
7	Phosphoproteomics study on the activated PKC-induced cell death. J Proteome Res. 2013 Oct 4;12(10):4280-301.
8	A fast sample processing strategy for large-scale profiling of human urine phosphoproteome by mass spectrometry. Talanta. 2018 Aug 1;185:166-173.
9	Survey of tyrosine kinase signaling reveals ROS kinase fusions in human cholangiocarcinoma. PLoS One. 2011 Jan 6;6(1):e15640.
10	CDC25B mediates rapamycin-induced oncogenic responses in cancer cells. Cancer Res. 2009 Mar 15;69(6):2663-8.

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Detail Information of Post-Translational Modifications

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