P70206
Gene name |
Plxna1 (Kiaa4053) |
Protein name |
Plexin-A1 |
Names |
Plex 1, Plexin-1 |
Species |
Mus musculus (Mouse) |
KEGG Pathway |
mmu:18844 |
EC number |
|
Protein Class |
PLEXIN (PTHR22625) |

Descriptions
Plexins are a large family of cell surface receptors for the axon guidance molecules semaphorins. Semaphorin-plexin signaling is essential for the regulation of neuronal development and other processes. Dysfunction in plexin pathways has been implicated in various diseases including neurological disorders and cancer.
Plexins are transmembrane proteins with a multidomain extracellular region that contains an N-terminal Sema domain. Before semaphorin binding, Plexin is an inactive monomer or dimer in which the RapGAP activity is autoinhibited. Binding of semaphorin to the Sema domain of plexin leads to activation of its cytoplasmic region, which relays the signal to downstream pathways. Mouse Plexin-A3 (P70208) possesses a segment preceding C1 domain and RDB domain as autoinhibitory elements.
Autoinhibitory domains (AIDs)
Target domain |
1316-1864 (Plexin, cytoplasmic RasGAP domain) |
Relief mechanism |
Partner binding |
Assay |
Structural analysis, Mutagenesis experiment |
Target domain |
1316-1864 (Plexin, cytoplasmic RasGAP domain) |
Relief mechanism |
|
Assay |
|
Target domain |
1316-1864 (Plexin, cytoplasmic RasGAP domain) |
Relief mechanism |
Partner binding |
Assay |
|
Accessory elements
No accessory elements
References
- He H et al. (2009) "Crystal structure of the plexin A3 intracellular region reveals an autoinhibited conformation through active site sequestration", Proceedings of the National Academy of Sciences of the United States of America, 106, 15610-5
- Takahashi T et al. (2001) "Plexina1 autoinhibition by the plexin sema domain", Neuron, 29, 429-39
- Wang Y et al. (2012) "Plexins are GTPase-activating proteins for Rap and are activated by induced dimerization", Science signaling, 5, ra6
Autoinhibited structure

Activated structure
2 variants for P70206
Variant ID(s) | Position | Change | Description | Diseaes Association | Provenance |
---|---|---|---|---|---|
rs29880105 | 32 | G>V | No | Ensembl | |
rs258594658 | 38 | A>S | No | Ensembl |
No associated diseases with P70206
15 regional properties for P70206
Type | Name | Position | InterPro Accession |
---|---|---|---|
domain | Sema domain | 23 - 510 | IPR001627 |
repeat | Plexin repeat | 512 - 557 | IPR002165-1 |
repeat | Plexin repeat | 807 - 859 | IPR002165-2 |
domain | IPT domain | 861 - 957 | IPR002909-1 |
domain | IPT domain | 958 - 1043 | IPR002909-2 |
domain | IPT domain | 1045 - 1145 | IPR002909-3 |
domain | IPT domain | 1147 - 1242 | IPR002909-4 |
domain | Plexin, cytoplasmic RasGAP domain | 1316 - 1864 | IPR013548 |
domain | PSI domain | 512 - 562 | IPR016201-1 |
domain | PSI domain | 658 - 705 | IPR016201-2 |
domain | PSI domain | 806 - 860 | IPR016201-3 |
domain | Plexin, TIG domain 1 | 567 - 657 | IPR041019 |
domain | Plexin, TIG domain 2 | 712 - 805 | IPR041362 |
domain | Plexin-A1, Sema domain | 36 - 511 | IPR042744 |
domain | Plexin, cytoplasmic RhoGTPase-binding domain | 1486 - 1598 | IPR046800 |
Functions
Description | ||
---|---|---|
EC Number | ||
Subcellular Localization |
|
|
PANTHER Family | PTHR22625 | PLEXIN |
PANTHER Subfamily | PTHR22625:SF35 | PLEXIN-A1 |
PANTHER Protein Class | transmembrane signal receptor | |
PANTHER Pathway Category |
Axon guidance mediated by semaphorins PlexinA1 |
6 GO annotations of cellular component
Name | Definition |
---|---|
cytosol | The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. |
integral component of plasma membrane | The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane. |
membrane | A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it. |
nucleoplasm | That part of the nuclear content other than the chromosomes or the nucleolus. |
plasma membrane | The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. |
semaphorin receptor complex | A stable binary complex of a neurophilin and a plexin, together forming a functional semaphorin receptor. |
1 GO annotations of molecular function
Name | Definition |
---|---|
semaphorin receptor activity | Combining with a semaphorin, and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity. |
10 GO annotations of biological process
Name | Definition |
---|---|
dichotomous subdivision of terminal units involved in salivary gland branching | The process in which a salivary epithelial cord bifurcates at its end. |
negative regulation of cell adhesion | Any process that stops, prevents, or reduces the frequency, rate or extent of cell adhesion. |
neuron projection extension | Long distance growth of a single neuron projection involved in cellular development. A neuron projection is a prolongation or process extending from a nerve cell, e.g. an axon or dendrite. |
neuron projection guidance | The process in which the migration of a neuron projection is directed to a specific target site in response to a combination of attractive and repulsive cues. |
positive regulation of axonogenesis | Any process that activates or increases the frequency, rate or extent of axonogenesis. |
regulation of cell migration | Any process that modulates the frequency, rate or extent of cell migration. |
regulation of cell shape | Any process that modulates the surface configuration of a cell. |
regulation of GTPase activity | Any process that modulates the rate of GTP hydrolysis by a GTPase. |
regulation of smooth muscle cell migration | Any process that modulates the frequency, rate or extent of smooth muscle cell migration. |
semaphorin-plexin signaling pathway involved in axon guidance | Any semaphorin-plexin signaling pathway that is involved in axon guidance. |
27 homologous proteins in AiPD
UniProt AC | Gene Name | Protein Name | Species | Evidence Code |
---|---|---|---|---|
Q769I5 | MET | Hepatocyte growth factor receptor | Bos taurus (Bovine) | PR |
A0M8S8 | MET | Hepatocyte growth factor receptor | Felis catus (Cat) (Felis silvestris catus) | PR |
Q04912 | MST1R | Macrophage-stimulating protein receptor | Homo sapiens (Human) | EV |
P08581 | MET | Hepatocyte growth factor receptor | Homo sapiens (Human) | EV |
O43157 | PLXNB1 | Plexin-B1 | Homo sapiens (Human) | EV SS |
Q9HCM2 | PLXNA4 | Plexin-A4 | Homo sapiens (Human) | SS |
O75051 | PLXNA2 | Plexin-A2 | Homo sapiens (Human) | SS |
P51805 | PLXNA3 | Plexin-A3 | Homo sapiens (Human) | SS |
O15031 | PLXNB2 | Plexin-B2 | Homo sapiens (Human) | SS |
Q9ULL4 | PLXNB3 | Plexin-B3 | Homo sapiens (Human) | SS |
Q9UIW2 | PLXNA1 | Plexin-A1 | Homo sapiens (Human) | EV SS |
Q62190 | Mst1r | Macrophage-stimulating protein receptor | Mus musculus (Mouse) | SS |
P16056 | Met | Hepatocyte growth factor receptor | Mus musculus (Mouse) | PR |
B2RXS4 | Plxnb2 | Plexin-B2 | Mus musculus (Mouse) | SS |
P70207 | Plxna2 | Plexin-A2 | Mus musculus (Mouse) | SS |
Q3UH93 | Plxnd1 | Plexin-D1 | Mus musculus (Mouse) | SS |
Q80UG2 | Plxna4 | Plexin-A4 | Mus musculus (Mouse) | SS |
Q8CJH3 | Plxnb1 | Plexin-B1 | Mus musculus (Mouse) | SS |
Q9QY40 | Plxnb3 | Plexin-B3 | Mus musculus (Mouse) | SS |
Q9QZC2 | Plxnc1 | Plexin-C1 | Mus musculus (Mouse) | SS |
P70208 | Plxna3 | Plexin-A3 | Mus musculus (Mouse) | EV SS |
Q2QLE0 | MET | Hepatocyte growth factor receptor | Sus scrofa (Pig) | PR |
P97523 | Met | Hepatocyte growth factor receptor | Rattus norvegicus (Rat) | PR |
D3ZPX4 | Plxna3 | Plexin-A3 | Rattus norvegicus (Rat) | SS |
D3ZLH5 | Plxnb3 | Plexin-B3 | Rattus norvegicus (Rat) | SS |
Q6BEA0 | plxna4 | Plexin-A4 | Danio rerio (Zebrafish) (Brachydanio rerio) | SS |
B0S5N4 | plxna3 | Plexin A3 | Danio rerio (Zebrafish) (Brachydanio rerio) | SS |
10 | 20 | 30 | 40 | 50 | 60 |
MPLPPLSSRT | LLLLLLLLLR | GVWIAISSPP | AGLGPQPAFR | TFVASDWGLT | HLVVHEQTGE |
70 | 80 | 90 | 100 | 110 | 120 |
VYVGAVNRIY | KLSGNLTLLR | AHVTGPVEDN | EKCYPPPSVQ | SCPHGLGSTD | NVNKLLLLDY |
130 | 140 | 150 | 160 | 170 | 180 |
AANRLLACGS | ASQGICQFLR | LDDLFKLGEP | HHRKEHYLSS | VREAGSMAGV | LIAGPPGQGQ |
190 | 200 | 210 | 220 | 230 | 240 |
AKLFVGTPID | GKSEYFPTLS | SRRLMANEED | ADMFGFVYQD | EFVSSQLKIP | SDTLSKFPAF |
250 | 260 | 270 | 280 | 290 | 300 |
DIYYVYSFRS | EQFVYYLTLQ | LDTQLTSPDA | AGEHFFTSKI | VRLCVNDPKF | YSYVEFPIGC |
310 | 320 | 330 | 340 | 350 | 360 |
EQAGVEYRLV | QDAYLSRPGQ | ALAKQLGLAE | DEEVLFTVFA | QGQKNRVKPP | KESALCLFTL |
370 | 380 | 390 | 400 | 410 | 420 |
RAIKEKIKER | IQSCYRGEGK | LSLPWLLNKE | LGCINSPLQI | DDDFCGQDFN | QPLGGTVTIE |
430 | 440 | 450 | 460 | 470 | 480 |
GTPLFVDKED | GLTAVAAYDY | QGRTVVFAGT | RSGRIRKILV | DLANPSGRPA | LAYESVVAQE |
490 | 500 | 510 | 520 | 530 | 540 |
GNPILRDLVL | SPNRQYLYAM | TEKQVTQVPV | ESCVQYTSCE | LCLGSRDPHC | GWCVLHSICS |
550 | 560 | 570 | 580 | 590 | 600 |
RQDACERAEE | PQRFASDLLQ | CVQLTVQPRN | VSVTMSQVPL | VLQAWNVPDL | SAGVNCSFED |
610 | 620 | 630 | 640 | 650 | 660 |
FTETESILED | GRIHCHSPSA | REVAPITQGQ | GDQRVVKLYL | KSKETGKKFA | SVDFVFYNCS |
670 | 680 | 690 | 700 | 710 | 720 |
VHQSCLACVN | GSFPCHWCKY | RHVCTNNAAD | CAFLEGRVNM | SEDCPQILPS | THIYVPVGVV |
730 | 740 | 750 | 760 | 770 | 780 |
KPITLAARNL | PQPQSGQRGY | ECLFHIPGSP | ARVTALRFNS | SSLQCQNSSY | SYEGNDVSDL |
790 | 800 | 810 | 820 | 830 | 840 |
PVNLSVVWNG | NFVIDNPQNI | QAHLYKCPAL | RQSCGLCLKA | DPRFECGWCV | AERRCSLRHH |
850 | 860 | 870 | 880 | 890 | 900 |
CPADSPASWM | HAHHGSSRCT | DPKILKLSPE | TGPRQGGTRL | TITGENLGLR | FEDVRLGVHV |
910 | 920 | 930 | 940 | 950 | 960 |
GKVLCSPVES | EYISAEQIVC | EIGDASTLRA | HDALVEVCVR | DCSLHYRALS | PKRFTFVTPT |
970 | 980 | 990 | 1000 | 1010 | 1020 |
FYRVSPSRGP | LSGGTWIGIE | GSHLNAGSDV | AVSIGGRPCS | FSWRNSREIR | CLTPPGHTPG |
1030 | 1040 | 1050 | 1060 | 1070 | 1080 |
SAPIVININR | AQLSNPEVKY | NYTEDPTILR | IDPEWSINSG | GTLLTVTGTN | LATVREPRIR |
1090 | 1100 | 1110 | 1120 | 1130 | 1140 |
AKYGGIEREN | SCMVYNDTTM | VCRAPSIDNP | KRSPPELGER | PDEIGFIMDN | VRTLLVLNSS |
1150 | 1160 | 1170 | 1180 | 1190 | 1200 |
SFLYYPDPVL | EPLSPTGLLE | LKPSSPLILK | GRNLLPPAPG | NSRLNYTVLI | GSTPCILTVS |
1210 | 1220 | 1230 | 1240 | 1250 | 1260 |
ETQLLCEAPN | LTGQHKVTVR | AGGFEFSPGM | LQVYSDSLLT | LPAIVGIGGG | GGLLLLVIVA |
1270 | 1280 | 1290 | 1300 | 1310 | 1320 |
VLIAYKRKSR | DADRTLKRLQ | LQMDNLESRV | ALECKEAFAE | LQTDIHELTS | DLDGAGIPFL |
1330 | 1340 | 1350 | 1360 | 1370 | 1380 |
DYRTYAMRVL | FPGIEDHPVL | KEMEVQANVE | KSLTLFGQLL | TKKHFLLTFI | RTLEAQRSFS |
1390 | 1400 | 1410 | 1420 | 1430 | 1440 |
MRDRGNVASL | IMTALQGEME | YATGVLKQLL | SDLIEKNLES | KNHPKLLLRR | TESVAEKMLT |
1450 | 1460 | 1470 | 1480 | 1490 | 1500 |
NWFTFLLYKF | LKECAGEPLF | MLYCAIKQQM | EKGPIDAITG | EARYSLSEDK | LIRQQIDYKT |
1510 | 1520 | 1530 | 1540 | 1550 | 1560 |
LTLNCVNPEH | ENAPEVPVKG | LNCDTVTQVK | EKLLDAVYKG | VPYSQRPKAG | DMDLEWRQGR |
1570 | 1580 | 1590 | 1600 | 1610 | 1620 |
MARIILQDED | VTTKIDNDWK | RLNTLAHYQV | TDGSSVALVP | KQTSAYNISN | SSTFTKSLSR |
1630 | 1640 | 1650 | 1660 | 1670 | 1680 |
YESMLRTASS | PDSLRSRTPM | ITPDLESGTK | LWHLVKNHDH | LDQREGDRGS | KMVSEIYLTR |
1690 | 1700 | 1710 | 1720 | 1730 | 1740 |
LLATKGTLQK | FVDDLFETIF | STAHRGSALP | LAIKYMFDFL | DEQADKHQIH | DSDVRHTWKS |
1750 | 1760 | 1770 | 1780 | 1790 | 1800 |
NCLPLRFWVN | VIKNPQFVFD | IHKNSITDAC | LSVVAQTFMD | SCSTSEHKLG | KDSPSNKLLY |
1810 | 1820 | 1830 | 1840 | 1850 | 1860 |
AKDIPNYKSW | VERYYADIAK | MPAISDQDMS | AYLAEQSRLH | LSQFNSMSAL | HEIYSYIAKY |
1870 | 1880 | 1890 | |||
KDEILVALEK | DEQARRQRLR | SKLEQVVDTM | ALSS |