ID   ACT4_ARTSX              Reviewed;         376 AA.
AC   P18603;
DT   01-NOV-1990, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1990, sequence version 1.
DT   25-MAY-2022, entry version 81.
DE   RecName: Full=Actin, clone 403;
DE   Flags: Precursor;
OS   Artemia sp. (Brine shrimp).
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Crustacea; Branchiopoda;
OC   Anostraca; Artemiidae; Artemia; unclassified Artemia.
OX   NCBI_TaxID=6662;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RX   PubMed=2402445; DOI=10.1093/nar/18.17.5219;
RA   Macias M.-T., Sastre L.;
RT   "Molecular cloning and expression of four actin isoforms during Artemia
RT   development.";
RL   Nucleic Acids Res. 18:5219-5225(1990).
CC   -!- FUNCTION: Actins are highly conserved proteins that are involved in
CC       various types of cell motility and are ubiquitously expressed in all
CC       eukaryotic cells.
CC   -!- FUNCTION: Multiple isoforms are involved in various cellular functions
CC       such as cytoskeleton structure, cell mobility, chromosome movement and
CC       muscle contraction.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm, cytoskeleton.
CC   -!- PTM: Oxidation of Met-45 to form methionine sulfoxide promotes actin
CC       filament depolymerization. Methionine sulfoxide is produced
CC       stereospecifically, but it is not known whether the (S)-S-oxide or the
CC       (R)-S-oxide is produced (By similarity). {ECO:0000250}.
CC   -!- MISCELLANEOUS: There are at least 4 actin isoforms expressed during
CC       artemia development.
CC   -!- SIMILARITY: Belongs to the actin family. {ECO:0000305}.
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DR   EMBL; X52605; CAA36838.1; -; mRNA.
DR   PIR; S11453; S11453.
DR   AlphaFoldDB; P18603; -.
DR   SMR; P18603; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-KW.
DR   GO; GO:0005856; C:cytoskeleton; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   InterPro; IPR004000; Actin.
DR   InterPro; IPR020902; Actin/actin-like_CS.
DR   InterPro; IPR004001; Actin_CS.
DR   InterPro; IPR043129; ATPase_NBD.
DR   PANTHER; PTHR11937; PTHR11937; 1.
DR   Pfam; PF00022; Actin; 1.
DR   PRINTS; PR00190; ACTIN.
DR   SMART; SM00268; ACTIN; 1.
DR   SUPFAM; SSF53067; SSF53067; 2.
DR   PROSITE; PS00406; ACTINS_1; 1.
DR   PROSITE; PS00432; ACTINS_2; 1.
DR   PROSITE; PS01132; ACTINS_ACT_LIKE; 1.
PE   2: Evidence at transcript level;
KW   Acetylation; ATP-binding; Cytoplasm; Cytoskeleton; Nucleotide-binding;
KW   Oxidation.
FT   PROPEP          1..2
FT                   /note="Removed in mature form"
FT                   /evidence="ECO:0000250"
FT                   /id="PRO_0000000614"
FT   CHAIN           3..376
FT                   /note="Actin, clone 403"
FT                   /id="PRO_0000000615"
FT   MOD_RES         3
FT                   /note="N-acetylaspartate"
FT                   /evidence="ECO:0000250"
FT   MOD_RES         45
FT                   /note="Methionine sulfoxide"
FT                   /evidence="ECO:0000250"
FT   MOD_RES         48
FT                   /note="Methionine sulfoxide"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   376 AA;  41838 MW;  AA1B7E874AB77D26 CRC64;
     MCDDEVAALV VDNGSGMCKA GFAGDDAPRA VFPSIVGRPR HQGVMVGMGQ KDSYVGDEAQ
     SKRGILTLKY PIEHGIVTNW DDMEKIWHHT FYNELRVAPE EHPVLLTEAP LNPKANREKM
     TQIMFETFNT PAMYVAIQAV LSLYASGRTT GIVLDSGDGV SHTVPIYEGY ALPHAILRLD
     LAGRDLTDYL MKILTERGYS FTTTAEREIV RDIKEKLCYV ALDFEQEMAT AASSTSLEKS
     YELPDGQVIT IGNERFRCPE ALFQPSFLGM ESCGIHETTY NSIMKCDVDI RKDLYANTVL
     SGGTTMYPGI ADRMQKEITA LAPSTMKIKI IAPPERKYSV WIGGSILASL STFQQMWISK
     QEYDESGPSI VHRKCF