Descriptions

The plasmid membrane Ca2+ pump (PMCA) extrudes Ca2+ from the cytosol to the extracellular space playing an important role in the maintenance of the resting level of intracellular Ca2+ and in the control of the Ca2+ transients. The PMCAs are of major physiological importance, with different isoforms being essential for presynaptic and postsynaptic Ca2+ regulation in neurons and for feedback signaling in the heart and sperm motility. The PMCAs belong to the subtype 2B of P-type ATPases. The C-terminal segment of the PMCA functions as an autoinhibitory domain by interacting with the catalytic core. Ca2+-calmodulin binds to the C-terminal segment and stops inhibition by switching the PMCA to an activated state of higher maximum activity and affinity for Ca2+. In the PMCA3, the G1107D replacement impairs the autoinhibition mechanism by introducing a negative charge perturbing the contacts between the calmodulin binding domain and the pump core.

Autoinhibitory domains (AIDs)

Target domain

346-1051 (P-type ATPase domain)

Relief mechanism

Partner binding, Ligand binding

Assay

Target domain

445-1046 (P-type ATPase domain)

Relief mechanism

Partner binding

Assay

Target domain

445-1046 (P-type ATPase domain)

Relief mechanism

Partner binding, Ligand binding

Assay

Accessory elements

No accessory elements

References

Autoinhibited structure

Activated structure

1 structures for D3K0R6

Entry ID Method Resolution Chain Position Source
AF-D3K0R6-F1 Predicted AlphaFoldDB

No variants for D3K0R6

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for D3K0R6

No associated diseases with D3K0R6

5 regional properties for D3K0R6

Type Name Position InterPro Accession
domain Cation-transporting P-type ATPase, N-terminal 45 - 121 IPR004014
domain Cation-transporting P-type ATPase, C-terminal 868 - 1046 IPR006068
ptm P-type ATPase, phosphorylation site 465 - 471 IPR018303
domain Plasma membrane calcium transporting P-type ATPase, C-terminal 1089 - 1135 IPR022141
domain P-type ATPase, haloacid dehalogenase domain 445 - 835 IPR044492

Functions

Description
EC Number 7.2.2.10 Linked to the hydrolysis of a nucleoside triphosphate
Subcellular Localization
  • Cell membrane ; Multi-pass membrane protein
  • Cell projection, cilium, flagellum membrane ; Multi-pass membrane protein
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

3 GO annotations of cellular component

Name Definition
intracellular membrane-bounded organelle Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
plasma membrane The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
sperm flagellum A microtubule-based flagellum (or cilium) that is part of a sperm, a mature male germ cell that develops from a spermatid.

6 GO annotations of molecular function

Name Definition
ATP binding Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
ATP hydrolysis activity Catalysis of the reaction
calmodulin binding Binding to calmodulin, a calcium-binding protein with many roles, both in the calcium-bound and calcium-free states.
metal ion binding Binding to a metal ion.
P-type calcium transporter activity Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction
PDZ domain binding Binding to a PDZ domain of a protein, a domain found in diverse signaling proteins.

5 GO annotations of biological process

Name Definition
cellular response to acetylcholine Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an acetylcholine stimulus.
flagellated sperm motility The directed, self-propelled movement of a cilium (aka flagellum) that contributes to the movement of a flagellated sperm.
intracellular calcium ion homeostasis A homeostatic process involved in the maintenance of a steady state level of calcium ions within a cell.
regulation of cytosolic calcium ion concentration Any process involved in the maintenance of an internal steady state of calcium ions within the cytosol of a cell or between the cytosol and its surroundings.
urinary bladder smooth muscle contraction A process in which force is generated within smooth muscle tissue, resulting in a change in muscle geometry. This process occurs in the urinary bladder. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. The urinary bladder is a musculomembranous sac along the urinary tract.

31 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
P38929 PMC1 Calcium-transporting ATPase 2 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) PR
Q16720 ATP2B3 Plasma membrane calcium-transporting ATPase 3 Homo sapiens (Human) EV
Q01814 ATP2B2 Plasma membrane calcium-transporting ATPase 2 Homo sapiens (Human) SS
P20020 ATP2B1 Plasma membrane calcium-transporting ATPase 1 Homo sapiens (Human) SS
P23634 ATP2B4 Plasma membrane calcium-transporting ATPase 4 Homo sapiens (Human) EV
G5E829 Atp2b1 Plasma membrane calcium-transporting ATPase 1 Mus musculus (Mouse) SS
Q9R0K7 Atp2b2 Plasma membrane calcium-transporting ATPase 2 Mus musculus (Mouse) SS
Q6Q477 Atp2b4 Plasma membrane calcium-transporting ATPase 4 Mus musculus (Mouse) SS
P23220 ATP2B1 Plasma membrane calcium-transporting ATPase 1 Sus scrofa (Pig) SS
P11505 Atp2b1 Plasma membrane calcium-transporting ATPase 1 Rattus norvegicus (Rat) SS
Q64568 Atp2b3 Plasma membrane calcium-transporting ATPase 3 Rattus norvegicus (Rat) SS
P11506 Atp2b2 Plasma membrane calcium-transporting ATPase 2 Rattus norvegicus (Rat) SS
Q64542 Atp2b4 Plasma membrane calcium-transporting ATPase 4 Rattus norvegicus (Rat) SS
Q2QMX9 ACA10 Calcium-transporting ATPase 10, plasma membrane-type Oryza sativa subsp japonica (Rice) SS
Q2QY12 ACA9 Probable calcium-transporting ATPase 9, plasma membrane-type Oryza sativa subsp japonica (Rice) SS
Q6ATV4 ACA3 Calcium-transporting ATPase 3, plasma membrane-type Oryza sativa subsp japonica (Rice) SS
Q7X8B5 ACA5 Calcium-transporting ATPase 5, plasma membrane-type Oryza sativa subsp japonica (Rice) SS
Q7XEK4 ACA7 Calcium-transporting ATPase 7, plasma membrane-type Oryza sativa subsp japonica (Rice) EV
Q8RUN1 ACA1 Calcium-transporting ATPase 1, plasma membrane-type Oryza sativa subsp japonica (Rice) SS
Q65X71 ACA6 Probable calcium-transporting ATPase 6, plasma membrane-type Oryza sativa subsp japonica (Rice) SS
Q2RAS0 ACA8 Probable calcium-transporting ATPase 8, plasma membrane-type Oryza sativa subsp japonica (Rice) SS
O22218 ACA4 Calcium-transporting ATPase 4, plasma membrane-type Arabidopsis thaliana (Mouse-ear cress) SS
O64806 ACA7 Putative calcium-transporting ATPase 7, plasma membrane-type Arabidopsis thaliana (Mouse-ear cress) SS
O81108 ACA2 Calcium-transporting ATPase 2, plasma membrane-type Arabidopsis thaliana (Mouse-ear cress) EV
Q9LF79 ACA8 Calcium-transporting ATPase 8, plasma membrane-type Arabidopsis thaliana (Mouse-ear cress) EV
Q9LIK7 ACA13 Putative calcium-transporting ATPase 13, plasma membrane-type Arabidopsis thaliana (Mouse-ear cress) SS
Q9LU41 ACA9 Calcium-transporting ATPase 9, plasma membrane-type Arabidopsis thaliana (Mouse-ear cress) SS
Q9LY77 ACA12 Calcium-transporting ATPase 12, plasma membrane-type Arabidopsis thaliana (Mouse-ear cress) SS
Q9M2L4 ACA11 Putative calcium-transporting ATPase 11, plasma membrane-type Arabidopsis thaliana (Mouse-ear cress) SS
Q9SZR1 ACA10 Calcium-transporting ATPase 10, plasma membrane-type Arabidopsis thaliana (Mouse-ear cress) SS
Q37145 ACA1 Calcium-transporting ATPase 1 Arabidopsis thaliana (Mouse-ear cress) SS
10 20 30 40 50 60
MTNPTEHTLP SNSILESREG EFGCTVMDLR KLMELRSSDA IDQINVHYGG VMNLCSRLKT
70 80 90 100 110 120
NPVEGLSGNP ADLEKRKQVF GQNLIPPKKP KTFLELVWEA LQDVTLIILE IAAIISLVLS
130 140 150 160 170 180
FYRPPGGENE QCGLAVTSPE DEGEAEAGWI EGAAILFSVI IVVLVTAFND WSKEKQFRGL
190 200 210 220 230 240
QNRIEKEQKF SVIRNGHIIQ LPVAEIVVGD IAQIKYGDLL PADGILIQGN DLKIDESSLT
250 260 270 280 290 300
GESDHVKKSL ERDPMLLSGT HVMEGSGRMV VTAVGINSQT GIIFTLLGAS EGEEEEKKKK
310 320 330 340 350 360
GKKQGVPENR NKAKTQDGVA LEIQPLNSQE GIDSEEKEKK AAKLPKKEKS VLQGKLTRLA
370 380 390 400 410 420
VQIGKAGLIM SAITVLILIL YFVIDNFVIQ RRPWLAECTP IYVQYFVKFF IIGVTVLVVA
430 440 450 460 470 480
VPEGLPLAVT ISLAYSVKKM MKDNNLVRHL DACETMGNAT AICSDKTGTL TMNRMSVVQA
490 500 510 520 530 540
YIGDTRYHQI PSPDDLVPKV LDLIVNGISI NSAYTSKILP PEKEGGLPRQ VGNKTECALL
550 560 570 580 590 600
GFVSDLKQDY HAVRSEVPEE KLYKVYTFNS VRKSMSTVIE KPGGGYRMYS KGASEIILRK
610 620 630 640 650 660
CNRILDKKGE AVPFKNKDRD EMVRTVIEPM ACEGLRTLCI AYRDFNDGEP PWDNESEILT
670 680 690 700 710 720
ELTCIAVVGI EDPVRPEVPE AIAKCKRAGI TVRMVTGDNI NTARAIATKC GIVTPGDDFL
730 740 750 760 770 780
CLEGKEFNRL IRNEKGEVEQ EKLDKIWPKL RVLARSSPTD KHTLVKGIID STVGDQRQVV
790 800 810 820 830 840
AVTGDGTNDG PALKKADVGF AMGIAGTDVA KEASDIILTD DNFTSIVKAV MWGRNVYDSI
850 860 870 880 890 900
SKFLQFQLTV NVVAVIVAFT GACITQDSPL KAVQMLWVNL IMDTFASLAL ATEPPTDSLL
910 920 930 940 950 960
KRRPYGRNKP LISRTMMKNI LGHAVYQLTV IFFLVFAGEK FFDIDSGRRA PLHSPPSQHY
970 980 990 1000 1010 1020
TIIFNTFVLM QLFNEINSRK IHGERNVFSG IFRNLIFCSV VLGTFISQII IVEFGGKPFS
1030 1040 1050 1060 1070 1080
CTKLTLSQWF WCLFIGIGEL LWGQVISTIP TQSLKFLKEA GHGTTKEEIT KDAEGLDEID
1090 1100 1110 1120 1130 1140
HAEMELRRGQ ILWFRGLNRI QTQIKVVKAF HSSLHESIQK PKNQNSIHNF MTHPEFTIDE
1150 1160 1170 1180 1190 1200
EGPRTPLLDE QEEEIFEKVS KPGTKTSSLD GEVTPQTNKN NNTVDCCQVQ IVASHSDSPL
HSLETSV