ID   SMPX_RAT                Reviewed;          85 AA.
AC   Q925F0;
DT   10-MAY-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2001, sequence version 1.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=Small muscular protein;
DE   AltName: Full=Stretch-responsive skeletal muscle protein;
GN   Name=Smpx; Synonyms=Srmx;
OS   Rattus norvegicus (Rat).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae;
OC   Murinae; Rattus.
OX   NCBI_TaxID=10116;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RX   PubMed=10598820; DOI=10.1007/s004390051138;
RA   Patzak D., Zhuchenko O., Lee C.-C., Wehnert M.;
RT   "Identification, mapping, and genomic structure of a novel X-chromosomal
RT   human gene (SMPX) encoding a small muscular protein.";
RL   Hum. Genet. 105:506-512(1999).
RN   [2]
RP   PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-36 AND THR-47, AND
RP   IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
RX   PubMed=22673903; DOI=10.1038/ncomms1871;
RA   Lundby A., Secher A., Lage K., Nordsborg N.B., Dmytriyev A., Lundby C.,
RA   Olsen J.V.;
RT   "Quantitative maps of protein phosphorylation sites across 14 different rat
RT   organs and tissues.";
RL   Nat. Commun. 3:876-876(2012).
CC   -!- FUNCTION: Plays a role in the regulatory network through which muscle
CC       cells coordinate their structural and functional states during growth,
CC       adaptation, and repair. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the SMPX family. {ECO:0000305}.
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DR   EMBL; AF364071; AAK50399.1; -; mRNA.
DR   RefSeq; NP_445847.1; NM_053395.1.
DR   RefSeq; XP_006257007.1; XM_006256945.3.
DR   AlphaFoldDB; Q925F0; -.
DR   STRING; 10116.ENSRNOP00000010027; -.
DR   iPTMnet; Q925F0; -.
DR   PhosphoSitePlus; Q925F0; -.
DR   PaxDb; Q925F0; -.
DR   PRIDE; Q925F0; -.
DR   GeneID; 84416; -.
DR   KEGG; rno:84416; -.
DR   CTD; 23676; -.
DR   RGD; 69233; Smpx.
DR   VEuPathDB; HostDB:ENSRNOG00000007495; -.
DR   eggNOG; ENOG502S62J; Eukaryota.
DR   HOGENOM; CLU_2512070_0_0_1; -.
DR   InParanoid; Q925F0; -.
DR   OMA; PPRKKEC; -.
DR   OrthoDB; 1588044at2759; -.
DR   PhylomeDB; Q925F0; -.
DR   TreeFam; TF338181; -.
DR   PRO; PR:Q925F0; -.
DR   Proteomes; UP000002494; Chromosome X.
DR   Bgee; ENSRNOG00000007495; Expressed in heart and 17 other tissues.
DR   Genevisible; Q925F0; RN.
DR   GO; GO:0043292; C:contractile fiber; ISO:RGD.
DR   GO; GO:0043034; C:costamere; ISO:RGD.
DR   GO; GO:0005737; C:cytoplasm; ISO:RGD.
DR   GO; GO:0031430; C:M band; ISO:RGD.
DR   GO; GO:0005927; C:muscle tendon junction; ISO:RGD.
DR   GO; GO:0005634; C:nucleus; ISO:RGD.
DR   InterPro; IPR029268; Chisel.
DR   PANTHER; PTHR17416; PTHR17416; 1.
DR   Pfam; PF15355; Chisel; 1.
PE   1: Evidence at protein level;
KW   Phosphoprotein; Reference proteome.
FT   CHAIN           1..85
FT                   /note="Small muscular protein"
FT                   /id="PRO_0000071981"
FT   REGION          19..63
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   MOD_RES         36
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0007744|PubMed:22673903"
FT   MOD_RES         47
FT                   /note="Phosphothreonine"
FT                   /evidence="ECO:0007744|PubMed:22673903"
SQ   SEQUENCE   85 AA;  9121 MW;  52654F8C790C932C CRC64;
     MSKQPISNVR SIQANINIPM GAFRPGAGQP PRRKESTPGT AEGAPATPEE KKPVPGMKKF
     PGPVVNLSEI QNVKSELKYV PKGEQ