Descriptions

ACTN2 is a major F-actin cross-linking protein in both muscle and non-muscle cells and a major multivalent platform mediating interactions with many cytoskeletal or regulatory proteins. An interaction between the C-terminal region of ACTN2 and the Z-repeat motifs of Titin protein targets ACTN2 to the Z-disk. Full-length ACTN2 does not bind Z-repeats. ACTN2 has a region that acts as a pseudo-Z-repeat between the actin-binding domain (ABD) and the spectrin-like repeats (R1), and this region prevents ACTN2 from binding to the Z-repeat of Titin protein. This autoinhibition is relieved upon binding of the Z-disk lipid phosphatidylinositol-bisphosphate to the ABD of ACTN2.

Autoinhibitory domains (AIDs)

Target domain

754-901 (EF-hand domain)

Relief mechanism

Ligand binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for Q0III9

Entry ID Method Resolution Chain Position Source
AF-Q0III9-F1 Predicted AlphaFoldDB

409 variants for Q0III9

Variant ID(s) Position Change Description Diseaes Association Provenance
rs465662625 2 M>L No EVA
rs482578249 2 M>T No EVA
rs465662625 2 M>V No EVA
rs450894448 4 V>L No EVA
rs436467322 6 Q>E No EVA
rs436467322 6 Q>K No EVA
rs465976859 11 G>V No EVA
rs434619766 12 T>A No EVA
rs434619766 12 T>P No EVA
rs471627376 16 P>T No EVA
rs456738120 17 F>L No EVA
rs473637474 19 G>S No EVA
rs459422864 26 Y>* No EVA
rs480038702 29 Q>R No EVA
rs438942062 30 E>* No EVA
rs451253606 33 W>R No EVA
rs467751823 34 D>A No EVA
rs481463488 36 D>G No EVA
rs446931674 40 D>A No EVA
rs466990765 44 E>K No EVA
rs432463387 46 Q>R No EVA
rs465183744 49 K>T No EVA
rs480355848 85 V>G No EVA
rs436514115 124 I>L No EVA
rs448949835 125 G>C No EVA
rs440487085 128 E>G No EVA
rs460617103 129 I>N No EVA
rs460617103 129 I>T No EVA
rs477309400 130 V>D No EVA
rs477309400 130 V>G No EVA
rs444969107 131 D>E No EVA
rs465010885 132 G>A No EVA
rs450796759 134 L>V No EVA
rs467338268 135 K>N No EVA
rs466657532 159 S>P No EVA
rs476031150 172 T>P No EVA
rs444746040 173 A>E No EVA
rs455268752 180 V>L No EVA
rs475317879 185 T>P No EVA
rs440344912 186 S>I No EVA
rs439564957 188 K>E No EVA
rs133059573 197 I>T No EVA
rs134388388 198 H>P No EVA
rs134388388 198 H>R No EVA
rs800183570 211 R>C No EVA
rs465836722 241 I>N No EVA
rs479496098 263 F>L No EVA
rs1116869392 266 A>V No EVA
rs453997527 273 A>P No EVA
rs470870914 274 N>K No EVA
rs439696417 277 C>* No EVA
rs458725868 278 K>E No EVA
rs475654898 278 K>N No EVA
rs444312129 279 V>L No EVA
rs461157495 280 L>P No EVA
rs481336310 283 N>S No EVA
rs439997423 284 Q>H No EVA
rs460168897 285 E>D No EVA
rs477079492 289 L>V No EVA
rs445741963 292 E>V No EVA
rs469595054 293 Y>H No EVA
rs483237337 295 K>N No EVA
rs448666185 298 S>R No EVA
rs435107714 300 L>R No EVA
rs455194200 303 W>L No EVA
rs472087467 304 I>T No EVA
rs440894879 306 R>P No EVA
rs451804987 310 W>L No EVA
rs470762856 312 E>G No EVA
rs472063433 315 V>G No EVA
rs443802130 316 G>D No EVA
rs464014387 318 P>A No EVA
rs480934338 319 S>C No EVA
rs480934338 319 S>R No EVA
rs442807629 321 S>R No EVA
rs459776776 322 A>D No EVA
rs445407795 323 M>K No EVA
rs479890306 323 M>L No EVA
rs464315539 324 Q>K No EVA
rs449805800 328 E>G No EVA
rs384110411 329 D>E No EVA
rs470069510 329 D>G No EVA
rs435489593 331 R>P No EVA
rs465644530 332 D>A No EVA
rs465644530 332 D>G No EVA
rs455149821 332 D>N No EVA
rs455149821 332 D>Y No EVA
rs434438093 333 Y>C No EVA
rs434438093 333 Y>F No EVA
rs434438093 333 Y>S No EVA
rs451339730 334 R>G No EVA
rs433282488 334 R>L No EVA
rs433282488 334 R>Q No EVA
rs443787416 335 R>G No EVA
rs457479343 335 R>H No EVA
rs474483958 336 L>M No EVA
rs443173580 336 L>Q No EVA
rs474483958 336 L>V No EVA
rs459738076 337 H>P No EVA
rs479851409 337 H>Q No EVA
rs438793258 338 K>R No EVA
rs459003349 339 P>A No EVA
rs459003349 339 P>T No EVA
rs482402599 343 Q>P No EVA
rs449831886 347 Q>E No EVA
rs469837625 352 F>Y No EVA
rs480318273 353 N>T No EVA
rs465910086 354 T>I No EVA
rs449136820 354 T>P No EVA
rs451214479 357 T>P No EVA
rs465030435 358 K>T No EVA
rs436910717 359 L>Q No EVA
rs457518792 362 S>I No EVA
rs474445149 363 H>P No EVA
rs436680723 363 H>Q No EVA
rs474445149 363 H>R No EVA
rs453589768 364 R>G No EVA
rs473695965 364 R>Q No EVA
rs876491709 366 A>G No EVA
rs458897776 367 F>L No EVA
rs475929243 370 S>C No EVA
rs444538193 371 E>* No EVA
rs448997704 374 L>M No EVA
rs459452987 374 L>R No EVA
rs479773244 375 V>G No EVA
rs444810929 376 S>A No EVA
rs444810929 376 S>P No EVA
rs464955290 376 S>W No EVA
rs482193091 378 I>M No EVA
rs458736229 378 I>S No EVA
rs444012185 379 A>T No EVA
rs481090237 386 E>G No EVA
rs446598990 389 E>G No EVA
rs453306884 392 Y>D No EVA
rs446245603 393 E>* No EVA
rs876175694 393 E>G No EVA
rs438292655 394 D>E No EVA
rs469621954 394 D>G No EVA
rs876277630 395 W>L No EVA
rs454752377 397 L>V No EVA
rs454104787 399 E>G No EVA
rs434043881 399 E>Q No EVA
rs471110718 400 I>V No EVA
rs438559666 402 R>G No EVA
rs42198707 403 L>I No EVA
rs452297246 403 L>P No EVA
rs475692955 405 R>G No EVA
rs444374313 406 L>R No EVA
rs460933983 408 H>D No EVA
rs480974924 408 H>P No EVA
rs440032326 408 H>Q No EVA
rs460174164 409 L>P No EVA
rs477152389 410 A>G No EVA
rs469627681 411 E>G No EVA
rs483122676 412 K>E No EVA
rs448740512 413 F>V No EVA
rs433908304 414 Q>H No EVA
rs468718524 414 Q>P No EVA
rs447674792 416 K>Q No EVA
rs464591292 416 K>R No EVA
rs452192292 418 S>A No EVA
rs437806399 419 L>P No EVA
rs474921645 422 A>T No EVA
rs439995471 424 T>A No EVA
rs439995471 424 T>P No EVA
rs463740067 428 E>A No EVA
rs480571399 431 L>Q No EVA
rs459821706 433 Q>H No EVA
rs457896404 436 Y>S No EVA
rs478144805 438 T>A No EVA
rs449933526 440 S>* No EVA
rs469919796 444 V>E No EVA
rs469919796 444 V>G No EVA
rs435107853 446 A>V No EVA
rs465864094 448 L>Q No EVA
rs451874995 454 F>S No EVA
rs472012628 458 L>V No EVA
rs437400617 461 H>L No EVA
rs457580922 462 Q>E No EVA
rs442813348 463 D>G No EVA
rs474522433 463 D>H No EVA
rs459726092 464 R>C No EVA
rs438931828 465 V>E No EVA
rs438931828 465 V>G No EVA
rs457933536 467 H>L No EVA
rs449796392 469 A>G No EVA
rs477767118 469 A>S No EVA
rs463450129 470 A>S No EVA
rs448845103 472 A>D No EVA
rs480355004 472 A>S No EVA
rs465770912 474 E>Q No EVA
rs434463530 475 L>P No EVA
rs458521828 476 N>K No EVA
rs475357296 477 E>D No EVA
rs444047368 478 L>P No EVA
rs481177090 479 D>Y No EVA
rs446978827 480 Y>S No EVA
rs460800086 481 H>R No EVA
rs477747348 485 S>T No EVA
rs437926607 493 I>M No EVA
rs469508852 493 I>V No EVA
rs448405184 496 Q>L No EVA
rs468633307 498 D>E No EVA
rs434101536 499 N>T No EVA
rs453031495 503 L>Q No EVA
rs473273460 504 T>S No EVA
rs432185025 506 K>N No EVA
rs452378457 509 D>A No EVA
rs475720424 510 A>E No EVA
rs460979125 512 E>V No EVA
rs453760591 517 L>R No EVA
rs439745025 520 T>P No EVA
rs483126850 528 F>C No EVA
rs462435818 533 A>G No EVA
rs479012081 538 W>L No EVA
rs447611824 539 L>R No EVA
rs464631788 543 V>L No EVA
rs478336886 544 E>G No EVA
rs445843173 545 D>A No EVA
rs469210545 546 L>Q No EVA
rs469210545 546 L>R No EVA
rs454770174 547 Q>P No EVA
rs468466807 548 D>G No EVA
rs433533303 549 V>A No EVA
rs433533303 549 V>G No EVA
rs453677939 550 W>G No EVA
rs470485774 550 W>S No EVA
rs474946412 552 V>A No EVA
rs474946412 552 V>E No EVA
rs474946412 552 V>G No EVA
rs476570663 553 H>D No EVA
rs442194930 553 H>P No EVA
rs442194930 553 H>R No EVA
rs462424981 554 S>A No EVA
rs462424981 554 S>P No EVA
rs479370768 555 V>G No EVA
rs458096751 556 E>D No EVA
rs441183841 556 E>G No EVA
rs470278973 557 E>D No EVA
rs450168969 557 E>G No EVA
rs478289893 557 E>K No EVA
rs482784061 558 T>A No EVA
rs448200193 558 T>N No EVA
rs482784061 558 T>S No EVA
rs447232675 559 Q>H No EVA
rs433899586 559 Q>P No EVA
rs465642930 565 H>R No EVA
rs723349530 574 E>K No EVA
rs457317296 585 I>V No EVA
rs442816510 595 T>K No EVA
rs453310844 603 T>P No EVA
rs208304190 608 T>A No EVA
rs208304190 608 T>P No EVA
rs440955947 610 T>P No EVA
rs457809528 616 T>P No EVA
rs461014490 622 R>Q No EVA
rs481622258 623 K>E No EVA
rs440605772 623 K>M No EVA
rs460663567 623 K>N No EVA
rs445999724 627 S>I No EVA
rs469248380 628 R>S No EVA
rs468670385 631 M>L No EVA
rs436158119 633 Q>H No EVA
rs453163809 634 E>V No EVA
rs466846132 635 E>A No EVA
rs432294662 637 T>K No EVA
rs452120347 639 Q>* No EVA
rs475361050 641 V>G No EVA
rs443998502 642 N>H No EVA
rs454585696 642 N>S No EVA
rs440564311 656 I>N No EVA
rs460624577 657 G>A No EVA
rs439822454 660 I>T No EVA
rs468683554 664 V>G No EVA
rs448400153 664 V>L No EVA
rs442333623 667 V>G No EVA
rs462461627 668 G>V No EVA
rs472540999 669 R>G No EVA
rs441267176 669 R>P No EVA
rs458200218 670 L>R No EVA
rs478326753 671 A>D No EVA
rs482876440 672 A>G No EVA
rs462763168 672 A>P No EVA
rs468517629 674 M>I No EVA
rs448236914 674 M>V No EVA
rs447237773 678 L>P No EVA
rs447237773 678 L>R No EVA
rs464070980 679 E>* No EVA
rs432893638 679 E>G No EVA
rs456711219 680 E>A No EVA
rs456711219 680 E>G No EVA
rs476794612 681 Q>R No EVA
rs435790435 682 M>K No EVA
rs455937804 683 A>E No EVA
rs472909334 684 G>S No EVA
rs441228695 684 G>V No EVA
rs471879575 685 L>R No EVA
rs443654271 687 Q>R No EVA
rs463868210 688 Q>E No EVA
rs463868210 688 Q>K No EVA
rs482858858 688 Q>P No EVA
rs482858858 688 Q>R No EVA
rs441820339 689 E>A No EVA
rs441820339 689 E>G No EVA
rs462003672 690 Q>K No EVA
rs478741856 692 I>F No EVA
rs449656305 695 Y>* No EVA
rs477617544 695 Y>H No EVA
rs469922363 697 S>G No EVA
rs435750547 697 S>R No EVA
rs455953259 698 N>T No EVA
rs466461817 700 D>N No EVA
rs452031943 703 E>G No EVA
rs457334193 705 D>A No EVA
rs457334193 705 D>G No EVA
rs443634313 705 D>Y No EVA
rs474358260 707 Q>P No EVA
rs461824834 708 L>P No EVA
rs441769840 708 L>V No EVA
rs478703384 710 Q>P No EVA
rs457884766 711 E>D No EVA
rs441027860 711 E>G No EVA
rs477831293 712 S>G No EVA
rs449682145 712 S>R No EVA
rs469853651 714 V>G No EVA
rs480380106 715 F>V No EVA
rs449384123 717 N>K No EVA
rs466322858 718 K>R No EVA
rs434976418 719 H>P No EVA
rs451062112 720 T>M No EVA
rs465679761 721 V>G No EVA
rs451992889 721 V>L No EVA
rs457363360 722 Y>C No EVA
rs474305386 725 E>A No EVA
rs436532717 725 E>D No EVA
rs439578876 726 H>D No EVA
rs462950120 727 I>S No EVA
rs483076156 729 V>E No EVA
rs483076156 729 V>G No EVA
rs448437262 730 G>S No EVA
rs481179964 731 W>C No EVA
rs462263802 731 W>L No EVA
rs462263802 731 W>S No EVA
rs446699637 732 E>* No EVA
rs466847945 733 Q>K No EVA
rs432321829 734 L>M No EVA
rs445617917 734 L>R No EVA
rs468913347 735 L>V No EVA
rs437599894 739 A>T No EVA
rs210333254 741 T>I No EVA
rs454441209 743 N>H No EVA
rs474540277 745 V>G No EVA
rs434125771 756 G>C No EVA
rs471294567 765 F>C No EVA
rs454221507 765 F>V No EVA
rs439850274 770 N>K No EVA
rs463266478 771 H>N No EVA
rs476966202 777 N>H No EVA
rs442024242 780 M>I No EVA
rs455768830 782 P>S No EVA
rs472682090 784 D>A No EVA
rs441292055 787 A>P No EVA
rs458250914 788 C>* No EVA
rs443042664 799 V>G No EVA
rs480080508 808 V>E No EVA
rs465646225 809 D>E No EVA
rs436500728 816 V>G No EVA
rs453286138 817 T>S No EVA
rs451550292 822 I>L No EVA
rs443205661 824 F>L No EVA
rs473797825 825 M>I No EVA
rs456977937 825 M>L No EVA
rs133614511 826 T>A No EVA
rs133614511 826 T>P No EVA
rs459457934 826 T>S No EVA
rs439011811 841 S>A No EVA
rs453004792 850 N>S No EVA
rs453004792 850 N>T No EVA
rs473114230 855 E>K No EVA
rs438977920 857 L>P No EVA
rs459127778 858 R>L No EVA
rs476052041 860 E>D No EVA
rs461491805 864 E>A No EVA
rs481189866 865 Q>E No EVA
rs446826779 866 A>G No EVA
rs460637545 868 Y>D No EVA
rs460637545 868 Y>N No EVA
rs477604410 868 Y>S No EVA
rs465085885 871 R>P No EVA
rs450792383 873 M>L No EVA
rs467698859 873 M>T No EVA
rs452871230 876 Y>F No EVA
rs432016177 881 A>D No EVA
rs432016177 881 A>G No EVA
rs452186971 882 P>S No EVA
rs461455000 883 A>D No EVA
rs444618574 883 A>T No EVA
rs460458365 885 A>D No EVA
rs460458365 885 A>G No EVA
rs440352474 885 A>P No EVA
rs477451831 887 D>G No EVA
rs463084562 888 Y>S No EVA
rs481994699 890 A>G No EVA
rs481994699 890 A>V No EVA
rs467660146 892 S>F No EVA
rs446737495 896 Y>* No EVA
rs466482742 898 E>G No EVA
rs431973430 899 S>G No EVA
rs452080294 899 S>R No EVA

No associated diseases with Q0III9

11 regional properties for Q0III9

Type Name Position InterPro Accession
conserved_site Actinin-type actin-binding domain, conserved site 47 - 56 IPR001589-1
conserved_site Actinin-type actin-binding domain, conserved site 121 - 145 IPR001589-2
domain Calponin homology domain 45 - 149 IPR001715-1
domain Calponin homology domain 158 - 264 IPR001715-2
repeat Spectrin repeat 289 - 397 IPR002017-1
repeat Spectrin repeat 408 - 512 IPR002017-2
repeat Spectrin repeat 524 - 634 IPR002017-3
repeat Spectrin repeat 645 - 746 IPR002017-4
domain EF-hand domain 760 - 828 IPR002048
domain EF-hand, Ca insensitive 831 - 897 IPR014837
repeat Spectrin/alpha-actinin 409 - 747 IPR018159

Functions

Description
EC Number
Subcellular Localization
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

5 GO annotations of cellular component

Name Definition
cell junction A cellular component that forms a specialized region of connection between two or more cells, or between a cell and the extracellular matrix, or between two membrane-bound components of a cell, such as flagella.
cell projection A prolongation or process extending from a cell, e.g. a flagellum or axon.
cortical actin cytoskeleton The portion of the actin cytoskeleton, comprising filamentous actin and associated proteins, that lies just beneath 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.
Z disc Platelike region of a muscle sarcomere to which the plus ends of actin filaments are attached.

2 GO annotations of molecular function

Name Definition
actin filament binding Binding to an actin filament, also known as F-actin, a helical filamentous polymer of globular G-actin subunits.
calcium ion binding Binding to a calcium ion (Ca2+).

2 GO annotations of biological process

Name Definition
actin cytoskeleton organization A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising actin filaments and their associated proteins.
muscle cell development The process whose specific outcome is the progression of a muscle cell over time, from its formation to the mature structure. Muscle cell development does not include the steps involved in committing an unspecified cell to the muscle cell fate.

17 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
A5D7D1 ACTN4 Alpha-actinin-4 Bos taurus (Bovine) SS
Q3B7N2 ACTN1 Alpha-actinin-1 Bos taurus (Bovine) SS
Q3ZC55 ACTN2 Alpha-actinin-2 Bos taurus (Bovine) SS
Q90734 ACTN4 Alpha-actinin-4 Gallus gallus (Chicken) SS
P05094 ACTN1 Alpha-actinin-1 Gallus gallus (Chicken) SS
P20111 ACTN2 Alpha-actinin-2 Gallus gallus (Chicken) SS
P18091 Actn Alpha-actinin, sarcomeric Drosophila melanogaster (Fruit fly) SS
O43707 ACTN4 Alpha-actinin-4 Homo sapiens (Human) SS
P12814 ACTN1 Alpha-actinin-1 Homo sapiens (Human) SS
P35609 ACTN2 Alpha-actinin-2 Homo sapiens (Human) EV
Q08043 ACTN3 Alpha-actinin-3 Homo sapiens (Human) SS
Q9JI91 Actn2 Alpha-actinin-2 Mus musculus (Mouse) SS
O88990 Actn3 Alpha-actinin-3 Mus musculus (Mouse) SS
P57780 Actn4 Alpha-actinin-4 Mus musculus (Mouse) SS
Q7TPR4 Actn1 Alpha-actinin-1 Mus musculus (Mouse) SS
Q9Z1P2 Actn1 Alpha-actinin-1 Rattus norvegicus (Rat) SS
Q9QXQ0 Actn4 Alpha-actinin-4 Rattus norvegicus (Rat) SS
10 20 30 40 50 60
MMMVLQPEGL GTGEGPFAGG RGGGEYMEQE EDWDRDLLLD PAWEKQQRKT FTAWCNSHLR
70 80 90 100 110 120
KAGTQIENIE EDFRNGLKLM LLLEVISGER LPRPDKGKMR FHKIANVNKA LDFIASKGVK
130 140 150 160 170 180
LVSIGAEEIV DGNLKMTLGM IWTIILRFAI QDISVEETSA KEGLLLWCQR KTAPYRNVNV
190 200 210 220 230 240
QNFHTSWKDG LALCALIHRH RPDLIDYAKL RKDDPIGNLN TAFEVAEKYL DIPKMLDAED
250 260 270 280 290 300
IVNTPKPDEK AIMTYVSCFY HAFAGAEQAE TAANRICKVL AVNQENEKLM EEYEKLASEL
310 320 330 340 350 360
LEWIRRTVPW LENRVGEPSM SAMQRKLEDF RDYRRLHKPP RVQEKCQLEI NFNTLQTKLR
370 380 390 400 410 420
LSHRPAFMPS EGKLVSDIAN AWRGLEQAEK GYEDWLLSEI RRLQRLQHLA EKFQQKASLH
430 440 450 460 470 480
EAWTRGKEDM LSQRDYETAS LQEVRALLRR HEAFESDLAA HQDRVEHIAA LAQELNELDY
490 500 510 520 530 540
HEAASVNSRC QAICDQWDNL GTLTQKRRDA LERMEKLLET IDQLQLEFAR RAAPFNNWLD
550 560 570 580 590 600
GAVEDLQDVW LVHSVEETQS LVTAHDQFKA TLPEADRERG AILGIQGEIQ KICQTYGLRP
610 620 630 640 650 660
SSTNPYITLT PQDINTKWDT VRKLVPSRDQ MLQEELTRQQ VNERLRRQFA AQANAIGPWI
670 680 690 700 710 720
QGKVEEVGRL AAGMAGSLEE QMAGLRQQEQ NIINYKSNID RLEGDHQLLQ ESLVFDNKHT
730 740 750 760 770 780
VYSMEHIRVG WEQLLTSIAR TINEVENQVL TRDAKGLSQE QLNEFRASFN HFDRKRNGMM
790 800 810 820 830 840
EPDDFRACLI SMGYDLGEVE FARIMTMVDP NAAGVVTFQA FIDFMTRETA ETDTAEQVVA
850 860 870 880 890 900
SFKILAGDKN YITAEELRRE LPAEQAEYCI RRMAPYKGAG APAGALDYVA FSSALYGESD
L