Descriptions

Calcium-dependent, calmodulin-stimulated protein phosphatase calcineurin (CN) plays a role in the transduction of intracellular Ca2+-dependent signals. CN is a heterodimer composed of a catalytic subunit A (CNA) and an essential regulatory subunit B (CNB). <br>CNA contains two autoinhibitory regions, which interfere with the function of the catalytic domain: autoinhibitory segment (AIS) and autoinhibitory domain (AID). The AIS interacts with a hydrophobic intersubunit groove formed at the junction of CNA and CNB, and disruption of the AIS interaction results in partial stimulation of CN activity. In addition, the binding partner calmodulin regulates the orientation of AID with respect to the catalytic core, resulting in incomplete activation of CN.

Autoinhibitory domains (AIDs)

Target domain

93-293 (Calcineurin-like phosphoesterase domain)

Relief mechanism

Partner binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

4 structures for P48452

Entry ID Method Resolution Chain Position Source
1TCO X-ray 250 A A 18-392 PDB
2F2O X-ray 217 A A/B 389-413 PDB
2F2P X-ray 260 A A/B 389-413 PDB
AF-P48452-F1 Predicted AlphaFoldDB

52 variants for P48452

Variant ID(s) Position Change Description Diseaes Association Provenance
rs436106481 2 S>C No EVA
rs465810065 2 S>T No EVA
rs469876777 17 V>E No EVA
rs437064967 19 K>T No EVA
rs436703339 37 N>H No EVA
rs467882213 45 I>L No EVA
rs439099605 82 D>H No EVA
rs447846985 96 F>L No EVA
rs450931577 169 K>E No EVA
rs719083141 173 R>H No EVA
rs469445249 182 F>V No EVA
rs799400436 183 D>A No EVA
rs433412812 189 A>V No EVA
rs472310983 200 G>S No EVA
rs451760323 202 L>* No EVA
rs434241015 204 P>A No EVA
rs452949529 204 P>Q No EVA
rs379918899 208 T>S No EVA
rs441632256 212 I>S No EVA
rs448491927 319 A>D No EVA
rs470200492 320 A>P No EVA
rs482254840 320 A>V No EVA
rs453347690 332 R>S No EVA
rs434960586 332 R>T No EVA
rs464446639 332 R>W No EVA
rs480074592 374 D>A No EVA
rs464632979 388 T>A No EVA
rs434971501 388 T>K No EVA
rs447101418 390 A>P No EVA
rs468859496 391 A>P No EVA
rs454492123 392 R>G No EVA
rs476180358 395 V>A No EVA
rs476180358 395 V>E No EVA
rs452219971 397 R>K No EVA
rs470821530 398 N>K No EVA
rs440946510 400 I>T No EVA
rs474892142 404 G>R No EVA
rs441990444 409 V>G No EVA
rs433988707 443 T>I No EVA
rs481715632 455 D>V No EVA
rs467017405 505 S>P No EVA
rs433917389 510 T>P No EVA
rs438211361 516 N>K No EVA
rs456708605 517 S>R No EVA
rs472010091 518 S>G No EVA
rs439128325 518 S>R No EVA
rs472010091 518 S>R No EVA
rs454360602 519 N>K No EVA
rs472815842 521 Q>L No EVA
rs461700120 522 Q>C No EVA
rs439925381 522 Q>G No EVA
rs461700120 522 Q>W No EVA

No associated diseases with P48452

13 regional properties for P48452

Type Name Position InterPro Accession
conserved_site Actinin-type actin-binding domain, conserved site 34 - 43 IPR001589-1
conserved_site Actinin-type actin-binding domain, conserved site 108 - 132 IPR001589-2
domain Calponin homology domain 32 - 136 IPR001715-1
domain Calponin homology domain 145 - 251 IPR001715-2
repeat Spectrin repeat 276 - 384 IPR002017-1
repeat Spectrin repeat 395 - 499 IPR002017-2
repeat Spectrin repeat 511 - 620 IPR002017-3
repeat Spectrin repeat 633 - 733 IPR002017-4
domain EF-hand domain 747 - 823 IPR002048
domain EF-hand, Ca insensitive 823 - 889 IPR014837
repeat Spectrin/alpha-actinin 278 - 623 IPR018159-1
repeat Spectrin/alpha-actinin 634 - 733 IPR018159-2
binding_site EF-Hand 1, calcium-binding site 760 - 772 IPR018247

Functions

Description
EC Number 3.1.3.16 Phosphoric monoester hydrolases
Subcellular Localization
  • Cytoplasm
  • Cell membrane ; Peripheral membrane protein
  • Cell membrane, sarcolemma
  • Cytoplasm, myofibril, sarcomere, Z line
  • Cell projection, dendritic spine
  • Colocalizes with ACTN1 and MYOZ2 at the Z line in heart and skeletal muscle (By similarity)
  • Recruited to the cell membrane by scaffold protein AKAP5 following L-type Ca(2+)-channel activation (By similarity)
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

6 GO annotations of cellular component

Name Definition
calcineurin complex A heterodimeric calcium ion and calmodulin dependent protein phosphatase composed of catalytic and regulatory subunits; the regulatory subunit is very similar in sequence to calmodulin.
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
cytosol The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
dendritic spine A small, membranous protrusion from a dendrite that forms a postsynaptic compartment, typically receiving input from a single presynapse. They function as partially isolated biochemical and an electrical compartments. Spine morphology is variable:they can be thin, stubby, mushroom, or branched, with a continuum of intermediate morphologies. They typically terminate in a bulb shape, linked to the dendritic shaft by a restriction. Spine remodeling is though to be involved in synaptic plasticity.
sarcolemma The outer membrane of a muscle cell, consisting of the plasma membrane, a covering basement membrane (about 100 nm thick and sometimes common to more than one fiber), and the associated loose network of collagen fibers.
Z disc Platelike region of a muscle sarcomere to which the plus ends of actin filaments are attached.

4 GO annotations of molecular function

Name Definition
calmodulin binding Binding to calmodulin, a calcium-binding protein with many roles, both in the calcium-bound and calcium-free states.
calmodulin-dependent protein phosphatase activity Catalysis of the reaction
metal ion binding Binding to a metal ion.
myosin phosphatase activity Catalysis of the reaction

16 GO annotations of biological process

Name Definition
calcineurin-NFAT signaling cascade Any intracellular signal transduction in which the signal is passed on within the cell by activation of a member of the NFAT protein family as a consequence of NFAT dephosphorylation by Ca(2+)-activated calcineurin. The cascade begins with calcium-dependent activation of the phosphatase calcineurin. Calcineurin dephosphorylates multiple phosphoserine residues on NFAT, resulting in the translocation of NFAT to the nucleus. The cascade ends with regulation of transcription by NFAT. The calcineurin-NFAT cascade lies downstream of many cell surface receptors, including G protein-coupled receptors (GPCRs) and receptor tyrosine kinases (RTKs) that signal to mobilize calcium ions (Ca2+).
dephosphorylation The process of removing one or more phosphoric (ester or anhydride) residues from a molecule.
epidermis development The process whose specific outcome is the progression of the epidermis over time, from its formation to the mature structure. The epidermis is the outer epithelial layer of an animal, it may be a single layer that produces an extracellular material (e.g. the cuticle of arthropods) or a complex stratified squamous epithelium, as in the case of many vertebrate species.
keratinocyte differentiation The process in which a relatively unspecialized cell acquires specialized features of a keratinocyte.
modulation of chemical synaptic transmission Any process that modulates the frequency or amplitude of synaptic transmission, the process of communication from a neuron to a target (neuron, muscle, or secretory cell) across a synapse. Amplitude, in this case, refers to the change in postsynaptic membrane potential due to a single instance of synaptic transmission.
negative regulation of signaling Any process that stops, prevents, or reduces the frequency, rate or extent of a signaling process.
positive regulation of activated T cell proliferation Any process that activates or increases the rate or extent of activated T cell proliferation.
positive regulation of glomerulus development Any process that increases the rate, frequency or extent of glomerulus development, the progression of the glomerulus over time from its initial formation until its mature state. The glomerulus is a capillary tuft surrounded by Bowman's capsule in nephrons of the vertebrate kidney.
positive regulation of osteoblast differentiation Any process that activates or increases the frequency, rate or extent of osteoblast differentiation.
positive regulation of osteoclast differentiation Any process that activates or increases the frequency, rate or extent of osteoclast differentiation.
positive regulation of saliva secretion Any process that activates or increases the frequency, rate or extent of the regulated release of saliva.
protein dephosphorylation The process of removing one or more phosphoric residues from a protein.
regulation of cell proliferation involved in kidney morphogenesis Any process that modulates the frequency, rate or extent of cell proliferation that contributes to the shaping of the kidney.
renal filtration A renal system process in which fluid circulating through the body is filtered through a barrier system.
response to calcium ion Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a calcium ion stimulus.
skeletal muscle fiber development The process whose specific outcome is the progression of the skeletal muscle fiber over time, from its formation to the mature structure. Muscle fibers are formed by the maturation of myotubes. They can be classed as slow, intermediate/fast or fast.

13 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
P23287 CNA1 Serine/threonine-protein phosphatase 2B catalytic subunit A1 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) PR
Q27889 Pp2B-14D Serine/threonine-protein phosphatase 2B catalytic subunit 2 Drosophila melanogaster (Fruit fly) SS
P48456 CanA1 Serine/threonine-protein phosphatase 2B catalytic subunit 1 Drosophila melanogaster (Fruit fly) SS
Q9VXF1 CanA-14F Serine/threonine-protein phosphatase 2B catalytic subunit 3 Drosophila melanogaster (Fruit fly) SS
P16298 PPP3CB Serine/threonine-protein phosphatase 2B catalytic subunit beta isoform Homo sapiens (Human) EV
P48454 PPP3CC Serine/threonine-protein phosphatase 2B catalytic subunit gamma isoform Homo sapiens (Human) SS
Q08209 PPP3CA Serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform Homo sapiens (Human) EV
P48453 Ppp3cb Serine/threonine-protein phosphatase 2B catalytic subunit beta isoform Mus musculus (Mouse) SS
P48455 Ppp3cc Serine/threonine-protein phosphatase 2B catalytic subunit gamma isoform Mus musculus (Mouse) PR
P63328 Ppp3ca Serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform Mus musculus (Mouse) EV
P20651 Ppp3cb Serine/threonine-protein phosphatase 2B catalytic subunit beta isoform Rattus norvegicus (Rat) SS
P63329 Ppp3ca Serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform Rattus norvegicus (Rat) SS
Q0G819 tax-6 Serine/threonine-protein phosphatase 2B catalytic subunit Caenorhabditis elegans SS
10 20 30 40 50 60
MSEPKAIDPK LSTTDRVVKA VPFPPSHRLT AKEVFDNDGK PRVDILKAHL MKEGRLEETV
70 80 90 100 110 120
ALRIITEGAS ILRQEKNLLD IDAPVTVCGD IHGQFFDLMK LFEVGGSPAN TRYLFLGDYV
130 140 150 160 170 180
DRGYFSIECV LYLWALKILY PKTLFLLRGN HECRHLTEYF TFKQECKIKY SERVYDACMD
190 200 210 220 230 240
AFDCLPLAAL MNQQFLCVHG GLSPEINTLD DIRKLDRFKE PPAYGPMCDI LWSDPLEDFG
250 260 270 280 290 300
NEKTQEHFTH NTVRGCSYFY SYPAVCEFLQ HNNLLSILRA HEAQDAGYRM YRKSQTTGFP
310 320 330 340 350 360
SLITIFSAPN YLDVYNNKAA VLKYENNVMN IRQFNCSPHP YWLPNFMDVF TWSLPFVGEK
370 380 390 400 410 420
VTEMLVNVLN ICSDDELGSE EDGFDGATAA ARKEVIRNKI RAIGKMARVF SVLREESESV
430 440 450 460 470 480
LTLKGLTPTG MLPSGVLSGG KQTLQSATVE AIEADEAIKG FSPQHKITSF EEAKGLDRIN
490 500 510 520
ERMPPRRDAM PSDANLNSIN KALASETNGT DSNGSNSSNI Q