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Overview

Uniprot IDA0A8L2QK78
Protein NameCalcium-transporting ATPase
Gene NameAtp2b1
OrganismRattus norvegicus

Kla Sites from experimental identification

Position Flanking peptide
1098 SLYEGLEKPESRSSI
193 SRIEQEQKFTVIRGG
251 TGESDHVKKSLDKDP
324 IENRNKAKAQDGAAM
359 ANLPKKEKSVLQGKL
365 EKSVLQGKLTKLAVQ
48 RSTDALRKIQESYGD
747 NRRIRNEKGEIEQER
757 IEQERIDKIWPKLRV
773 ARSSPTDKHTLVKGI
806 TNDGPALKKADVGFA
807 NDGPALKKADVGFAM
921 RKPYGRNKPLISRTM

Function

Catalyzes the hydrolysis of ATP coupled with the transport of calcium from the cytoplasm to the extracellular space thereby maintaining intracellular calcium homeostasis. Plays a role in blood pressure regulation through regulation of intracellular calcium concentration and nitric oxide production leading to regulation of vascular smooth muscle cells vasoconstriction. Positively regulates bone mineralization through absorption of calcium from the intestine. Plays dual roles in osteoclast differentiation and survival by regulating RANKL-induced calcium oscillations in preosteoclasts and mediating calcium extrusion in mature osteoclasts. Regulates insulin sensitivity through calcium/calmodulin signaling pathway by regulating AKT1 activation and NOS3 activation in endothelial cells. May play a role in synaptic transmission by modulating calcium and proton dynamics at the synaptic vesicles

Protein Sequence

10 MGDMANNSVA 20 YSGVKNSLKE 30 ANHDGDFGIT 40 LAELRALMEL 50 RSTDALRKIQ 60 ESYGDVYGIC 70 TKLKTSPNEG 80 LSGNPADLER 90 REAVFGKNFI 100 PPKKPKTFLQ 110 LVWEALQDVT 120 LIILEIAAIV 130 SLGLSFYQPP 140 EGDNALCGEV 150 SVGEEEGEGE 160 TGWIEGAAIL 170 LSVVCVVLVT 180 AFNDWSKEKQ 190 FRGLQSRIEQ 200 EQKFTVIRGG 210 QVIQIPVADI 220 TVGDIAQVKY 230 GDLLPADGIL 240 IQGNDLKIDE 250 SSLTGESDHV 260 KKSLDKDPLL 270 LSGTHVMEGS 280 GRMVVTAVGV 290 NSQTGIIFTL 300 LGAGGEEEEK 310 KDEKKKEKKN 320 KKQDGAIENR 330 NKAKAQDGAA 340 MEMQPLKSEE 350 GGDGDEKDKK 360 KANLPKKEKS 370 VLQGKLTKLA 380 VQIGKAGLLM 390 SAITVIILVL 400 YFVIDTFWVQ 410 KRPWLAECTP 420 IYIQYFVKFF 430 IIGVTVLVVA 440 VPEGLPLAVT 450 ISLAYSVKKM 460 MKDNNLVRHL 470 DACETMGNAT 480 AICSDKTGTL 490 TMNRMTVVQA 500 YINEKHYKKV 510 PEPEAIPPNI 520 LSYLVTGISV 530 NCAYTSKILP 540 PEKEGGLPRH 550 VGNKTECALL 560 GFLLDLKRDY 570 QDVRNEIPEE 580 ALYKVYTFNS 590 VRKSMSTVLK 600 NSDGSFRIFS 610 KGASEIILKK 620 CFKILSANGE 630 AKVFRPRDRD 640 DIVKTVIEPM 650 ASEGLRTICL 660 AFRDFPAGEP 670 EPEWDNENDV 680 VTGLTCIAVV 690 GIEDPVRPEV 700 PEAIKKCQRA 710 GITVRMVTGD 720 NINTARAIAT 730 KCGILHPGED 740 FLCLEGKDFN 750 RRIRNEKGEI 760 EQERIDKIWP 770 KLRVLARSSP 780 TDKHTLVKGI 790 IDSTVSEQRQ 800 VVAVTGDGTN 810 DGPALKKADV 820 GFAMGIAGTD 830 VAKEASDIIL 840 TDDNFTSIVK 850 AVMWGRNVYD 860 SISKFLQFQL 870 TVNVVAVIVA 880 FTGACITQDS 890 PLKAVQMLWV 900 NLIMDTLASL 910 ALATEPPTES 920 LLLRKPYGRN 930 KPLISRTMMK 940 NILGHAFYQL 950 VVVFTLLFAG 960 EKFFDIDSGR 970 NAPLHAPPSE 980 HYTIVFNTFV 990 LMQLFNEINA 1000 RKIHGERNVF 1010 EGIFNNAIFC 1020 TIVLGTFVVQ 1030 LISTIPTSRL 1040 KFLKEAGHGT 1050 QKEEIPEEEL 1060 AEDVEEIDHA 1070 ERELRRGQIL 1080 WFRGLNRIQT 1090 QIRVVNAFRS 1100 SLYEGLEKPE 1110 SRSSIHNFMT 1120 HPEFRIEDSE 1130 PHIPLIDDTD 1140 AEDDAPTKRN 1150 SSPPPSPNKN 1160 NNAVDSGIHL 1170 TIEMNKSATS 1180 SSPGSPLHSL ETSL

Gene Ontology

Classification GO ID Description
Cellular Component GO:0016323 basolateral plasma membrane
Cellular Component GO:0042734 presynaptic membrane
Cellular Component GO:0030672 synaptic vesicle membrane
Molecular Function GO:0005524 ATP binding
Molecular Function GO:0016887 ATP hydrolysis activity
Molecular Function GO:0005516 calmodulin binding
Molecular Function GO:0046872 metal ion binding
Molecular Function GO:0005388 P-type calcium transporter activity
Molecular Function GO:0030165 PDZ domain binding
Biological Process GO:0003407 neural retina development

Reference

[1] Chen Y, Sun W, Sun Z, Zhao H, Wu T et al.. Effect of electroacupuncture on hippocampal protein lactylation in a rat model of vascular dementia.. Front Neurol 16:1629474. 2025. PMID: 40963935.