Protein: Sphingoid long-chain bases kinase 1 (AtLCBK1) (LCB kinase 1) (EC 2.7.-.-) (Sphingosine kinase 1) (Q9LRB0)
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Involved in the production of sphingolipid metabolites. Active on sphingosine, phytosphingosine (PHS, 4-hydroxysphinganine), D-erythro-dihydrosphingosine, D-erythro-sphingosine and trans-4, trans-8-sphingadienine, an LCB found exclusively in plants, but not on N-acetyl-dihydrosphingosine (C2-dihydroceramide) and D-threo-dihydrosphingosine.
Sequence: MQKSGVNRNPSLKVAIPQAQQSLRRLGFCSQIATGGSQQSSPIVFPEKRNKKVKASSRRGEVTNDPQVKPKPDEHRIDIGGGDEKSDLLGSLVYAGKLVLDKRKSASGKDATEIQQPAATDISIKKAVDAKLTSSALVWGSDMLQLNDVVSVTYNVGLRHFTVHAYPIGKGSCGLSCFTKPKRSRKDFRFVAPTVEEAVQWVASFGDQQCFINCLPHPLVAKKQASSELFSVPIDTPPELVFRCKSAPKMLVILNPRSGHGRSIKVFHNVVEPIFKLAGIKMEVVKTTKAGHARELASTVDINLCSDGIICVGGDGIINEVLNGLLTRSNPKEGVSIPIGIVPAGSDNSLVWTVLGVRDPISAALSIVKGGLTATDVFAVEWIHTGIIHFGMTVSYYGFVSDVLELSEKYQKRFGPLRYFVAGFLKFMCLPKYSYEVEYLPAQKEDAEGKIRLEKEAVDMQDLYTDVMRRSSREGFPRASSLSSIDSIMTPSVGELDTCSSTHASTEPSEYVRGIDPKMKRLSSGRRDVTAEPEVIHPQAQSTTPNWPRTRSKSRMDKGWMGLTSVQDPPTRCSWGNTGGQDREDISSTVSDPGPIWDAGPKWDTEPSAWDVENSIELPGPPEDIETGLRKQSITPIFEDKWVSRKGHFLGIMVCNHACRTVQSSQVVAPNSEHDDGTMDMLLVHGCGRLRLLRFFILLQTGRHLSLPYVECVKVKSVKIKAGKNTHDSCGIDGELFALHGEVISTMLPEQCRLIGNAPGRHS
InterPro domains: - IPR050187: Lipid Phosphate Formation and Regulation (family) [144-739]
- IPR001206: Diacylglycerol kinase, catalytic domain (domain) [245-384]
- IPR017438: Inorganic polyphosphate/ATP-NAD kinase, N-terminal (homologous_superfamily) [243-374]
- IPR045540: YegS/DAGK, C-terminal domain (domain) [661-753]
- IPR016064: NAD kinase/diacylglycerol kinase-like domain superfamily (homologous_superfamily) [249-756]
Interaction partners: - Enhanced disease resistance-like protein
- At5g19590
- Uncharacterized protein
- Sphingosine-1-phosphate lyase
- Alkaline ceramidase
- Long chain base biosynthesis protein 1
- Long chain base biosynthesis protein 2a
- Neutral ceramidase 1
- Long chain base biosynthesis protein 2b
- serine C-palmitoyltransferase
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0003824 (catalytic activity), GO:0016740 (transferase activity), GO:0016772 (transferase activity, transferring phosphorus-containing groups), GO:0016301 (kinase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0009058 (biosynthetic process), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0044238 (primary metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0044255 (cellular lipid metabolic process), GO:0044249 (cellular biosynthetic process), GO:1901576 (organic substance biosynthetic process), GO:1901564 (organonitrogen compound metabolic process), GO:0006629 (lipid metabolic process), GO:1901566 (organonitrogen compound biosynthetic process), GO:0006665 (sphingolipid metabolic process), GO:0046467 (membrane lipid biosynthetic process), GO:0008610 (lipid biosynthetic process), GO:0006643 (membrane lipid metabolic process), GO:0030148 (sphingolipid biosynthetic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0016020 (membrane), GO:0005737 (cytoplasm), GO:0005773 (vacuole), GO:0031090 (organelle membrane), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0000325 (plant-type vacuole), GO:0043231 (intracellular membrane-bounded organelle), GO:0005774 (vacuolar membrane), GO:0098588 (bounding membrane of organelle), GO:0009705 (plant-type vacuole membrane)