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Protein

Myosin-7

Gene

Myh7

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Myosins are actin-based motor molecules with ATPase activity essential for muscle contraction. Forms regular bipolar thick filaments that, together with actin thin filaments, constitute the fundamental contractile unit of skeletal and cardiac muscle.1 Publication

Miscellaneous

The cardiac alpha isoform is a 'fast' ATPase myosin, while the beta isoform is a 'slow' ATPase.

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi178 – 185ATP8

GO - Molecular functioni

  • actin-dependent ATPase activity Source: RGD
  • actin filament binding Source: InterPro
  • ATPase activity Source: RGD
  • ATP binding Source: RGD
  • calmodulin binding Source: UniProtKB-KW
  • microfilament motor activity Source: RGD
  • protein heterodimerization activity Source: RGD
  • protein homodimerization activity Source: RGD

GO - Biological processi

Keywordsi

Molecular functionActin-binding, Calmodulin-binding, Motor protein, Muscle protein, Myosin
LigandATP-binding, Nucleotide-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Myosin-7
Alternative name(s):
Myosin heavy chain 7
Myosin heavy chain slow isoform
Short name:
MyHC-slow
Myosin heavy chain, cardiac muscle beta isoform
Short name:
MyHC-beta
Gene namesi
Name:Myh7
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeRattus
Proteomesi
  • UP000002494 Componenti: Unplaced

Organism-specific databases

RGDi62030. Myh7.

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm, Thick filament

Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Mutagenesisi1188Missing : No effect on myosin incorporation into sarcomeres. 1 Publication1
Mutagenesisi1385Missing : No effect on myosin incorporation into sarcomeres. 1 Publication1
Mutagenesisi1582Missing : No effect on myosin incorporation into sarcomeres. Causes myosin cytoplasmic aggregates that show a sponge-like structure. 1 Publication1
Mutagenesisi1807Missing : No effect on myosin incorporation into sarcomeres. Disrupts location on the sarcomere bare zone. 1 Publication1

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001234111 – 1935Myosin-7Add BLAST1935

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei129N6,N6,N6-trimethyllysineSequence analysis1
Modified residuei378PhosphothreonineBy similarity1
Modified residuei1137PhosphoserineBy similarity1
Modified residuei1269PhosphoserineBy similarity1
Modified residuei1282PhosphothreonineBy similarity1
Modified residuei1308PhosphotyrosineBy similarity1
Modified residuei1309PhosphothreonineBy similarity1
Modified residuei1510PhosphoserineCombined sources1
Modified residuei1513PhosphothreonineBy similarity1

Keywords - PTMi

Methylation, Phosphoprotein

Proteomic databases

PaxDbiP02564.
PRIDEiP02564.

PTM databases

iPTMnetiP02564.
PhosphoSitePlusiP02564.

Interactioni

Subunit structurei

Muscle myosin is a hexameric protein that consists of 2 heavy chain subunits (MHC), 2 alkali light chain subunits (MLC) and 2 regulatory light chain subunits (MLC-2). Interacts with ECM29. Interacts (via C-terminus) with LRRC39.By similarity

GO - Molecular functioni

  • actin filament binding Source: InterPro
  • calmodulin binding Source: UniProtKB-KW
  • protein heterodimerization activity Source: RGD
  • protein homodimerization activity Source: RGD

Protein-protein interaction databases

IntActiP02564. 1 interactor.
MINTiMINT-4655412.
STRINGi10116.ENSRNOP00000024186.

Structurei

3D structure databases

ProteinModelPortaliP02564.
SMRiP02564.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini32 – 81Myosin N-terminal SH3-likePROSITE-ProRule annotationAdd BLAST50
Domaini85 – 778Myosin motorPROSITE-ProRule annotationAdd BLAST694
Domaini781 – 810IQPROSITE-ProRule annotationAdd BLAST30

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni655 – 677Actin-bindingAdd BLAST23
Regioni757 – 771Actin-bindingAdd BLAST15

Coiled coil

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Coiled coili840 – 1935Sequence analysisAdd BLAST1096

Domaini

The rodlike tail sequence is highly repetitive, showing cycles of a 28-residue repeat pattern composed of 4 heptapeptides, characteristic for alpha-helical coiled coils. Four skip residues (Skip1: Thr-1188, Skip2: Glu-1385, Skip3: Glu-1582 and Skip4: Gly-1807) introduce discontinuities in the coiled-coil heptad repeats. The first three skip residues are structurally comparable and induce a unique local relaxation of the coiled-coil superhelical pitch and the fourth skip residue lies within a highly flexible molecular hinge that is necessary for myosin incorporation in the bare zone of sarcomeres (PubMed:26150528).1 Publication
Limited proteolysis of myosin heavy chain produces 1 light meromyosin (LMM) and 1 heavy meromyosin (HMM). HMM can be further cleaved into 2 globular subfragments (S1) and 1 rod-shaped subfragment (S2).Curated

Sequence similaritiesi

Keywords - Domaini

Coiled coil

Phylogenomic databases

eggNOGiKOG0161. Eukaryota.
COG5022. LUCA.
HOGENOMiHOG000173959.
HOVERGENiHBG004704.
InParanoidiP02564.
KOiK17751.
PhylomeDBiP02564.

Family and domain databases

Gene3Di2.30.30.360. 1 hit.
InterProiView protein in InterPro
IPR000048. IQ_motif_EF-hand-BS.
IPR001609. Myosin_head_motor_dom.
IPR004009. Myosin_N.
IPR008989. Myosin_S1_N.
IPR002928. Myosin_tail.
IPR027417. P-loop_NTPase.
PfamiView protein in Pfam
PF00063. Myosin_head. 1 hit.
PF02736. Myosin_N. 1 hit.
PF01576. Myosin_tail_1. 1 hit.
PRINTSiPR00193. MYOSINHEAVY.
SMARTiView protein in SMART
SM00242. MYSc. 1 hit.
SUPFAMiSSF52540. SSF52540. 1 hit.
PROSITEiView protein in PROSITE
PS50096. IQ. 1 hit.
PS51456. MYOSIN_MOTOR. 1 hit.
PS51844. SH3_LIKE. 1 hit.

Sequencei

Sequence statusi: Complete.

P02564-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MADREMAAFG AGAPFLRKSE KERLEAQTRP FDLKKDVFVP DDKEEFVKAK
60 70 80 90 100
IVSREGGKVT AETENGKTVT VKEDQVMQQN PPKFDKIEDM AMLTFLHEPA
110 120 130 140 150
VLYNLKERYA SWMIYTYSGL FCVTVNPYKW LPVYNAQVVA AYRGKKRSEA
160 170 180 190 200
PPHIFSISDN AYQYMLTDRE NQSILITGES GAGKTVNTKR VIQYFAVIAA
210 220 230 240 250
IGDRSKKDQT PGKGTLEDQI IQANPALEAF GNAKTVRNDN SSRFGKFIRI
260 270 280 290 300
HFGATGKLAS ADIETYLLEK SRVIFQLKAE RDYHIFYQIL SNKKPELLDM
310 320 330 340 350
LLITNNPYDY AFFSQGETTV ASIDDSEEHM ATDSAFDVLG FTPEEKNSIY
360 370 380 390 400
KLTGAIMHFG NMKFKQKQRE EQAEPDGTEE ADKSAYLMGL NSADLLKGLC
410 420 430 440 450
HPRVKVGNEY VTKGQNVQQV AYAIGALAKS VYEKMFNWMV TRINATLETK
460 470 480 490 500
QPRQYFIGVL DIAGFEIFDF NSFEQLCINF TNEKLQQFFN HHMFVLEQEE
510 520 530 540 550
YKKEGIEWTF IDFGMDLQAC IDLIEKPMGI MSILEEECMF PKATDMTFKA
560 570 580 590 600
KLYDNHLGKS NNFQKPRNIK GKQEAHFSLI HYAGTVDYNI LGWLQKNKDP
610 620 630 640 650
LNETVVGLYQ KSSLKLLSNL FANYAGADAP VDKGKGKAKK GSSFQTVSAL
660 670 680 690 700
HRENLNKLMT NLRSTHPHFV RCIIPNETKS PGVMDNPLVM HQLRCNGVLE
710 720 730 740 750
GIRICRKGFP NRILYGDFRQ RYRILNPAAI PEGQFIDSRK GAEKLLGSLD
760 770 780 790 800
IDHNQYKFGH TKVFFKAGLL GLLEEMRDER LSRIITRIQA QSRGVLSRME
810 820 830 840 850
FKKLLERRDS LLIIQWNIRA FMGVKNWPWM KLYFKIKPLL KSAETEKEMA
860 870 880 890 900
NMKEEFGRVK DALEKSEARR KELEEKMVSL LQEKNDLQLQ VQAEQDNLAD
910 920 930 940 950
AEERCDQLIK NKIQLEAKVK EMTERLEDEE EMNAELTAKK RKLEDECSEL
960 970 980 990 1000
KRDIDDLELT LAKVEKEKHA TENKVKNLTE EMAGLDEIIV KLTKEKKALQ
1010 1020 1030 1040 1050
EAHQQALDDL QAEEDKVNTL TKAKVKLEQQ VDDLEGSLDQ DKKVRMDLER
1060 1070 1080 1090 1100
AKRKLEGDLK LTQESIMDLE NDKQQLDERL KKKDFELNAL NARIEDEQAL
1110 1120 1130 1140 1150
GSQLQKKLKE LQARIEELEE ELEAERTARA KVEKLRSDLS RELEEISERL
1160 1170 1180 1190 1200
EEAGGATSVQ IEMNKKREAE FQKMRRDLEE ATLQHEATAA ALRKKHADSV
1210 1220 1230 1240 1250
AELGEQIDNL QRVKQKLEKE KSEFKLELDD VTSNMEQIIK AKANLEKMCR
1260 1270 1280 1290 1300
TLEDQMNEHR SKAEETQRSV NDLTRQRAKL QTENGELSRQ LDEKEALISQ
1310 1320 1330 1340 1350
LTRGKLTYTQ QLEDLKRQLE EEVKAKNALA HALQSARHDC DLLREQYEEE
1360 1370 1380 1390 1400
TEAKAELQRV LSKANSEVAQ WRTKYETDAI QRTEELEEAK KKLAQRLQDA
1410 1420 1430 1440 1450
EEAVEAVNAK CSSLEKTKHR LQNEIEDLMV DVERSNAAAA ALDKKQRNFD
1460 1470 1480 1490 1500
KILVEWKQKY EESQSELESS QKEARSLSTE LFKLKNAYEE SLEHLETFKR
1510 1520 1530 1540 1550
ENKNLQEEIS DLTEQLGSTG KSIHELEKIR KQLEAEKLEL QSALEEAEAS
1560 1570 1580 1590 1600
LEHEEGKILR AQLEFNQIKA EIERKLAEKD EEMEQAKRNH LRVVDSLQTS
1610 1620 1630 1640 1650
LDAETRSRNE ALRVKKKMEG DLNEMEIQLS HANRMAAEAQ KQVKSLQSLL
1660 1670 1680 1690 1700
KDTQIQLDDA VRANDDLKEN IAIVERRNNL LQAELEELRA VVEQTERSRK
1710 1720 1730 1740 1750
LAEQELIETS ERVQLLHSQN TSLINQKKKM DADLSQLQTE VEEAVQECRN
1760 1770 1780 1790 1800
AEEKAKKAIT DAAMMAEELK KEQDTSAHLE RMKNNMEQTI KDLQHRLDEA
1810 1820 1830 1840 1850
EQIALKGGKK QLQKLEARVR ELENELEAEQ KRNAESVKGM RKSERRIKEL
1860 1870 1880 1890 1900
TYQTEEDRKN LLRLQDLVDK LQLKVKAYKR QAEEAEEQAN TNLSKFRKVQ
1910 1920 1930
HELDEAEERA DIAESQVNKL RAKSRDIGAK GLNEE
Length:1,935
Mass (Da):223,083
Last modified:October 1, 1989 - v2
Checksum:iC8376C324A7BD82B
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti1529 – 1531IRK → VRR in AAA41654 (PubMed:7045682).Curated3
Sequence conflicti1731D → H in AAA41654 (PubMed:7045682).Curated1
Sequence conflicti1784N → K in AAA41654 (PubMed:7045682).Curated1
Sequence conflicti1851T → N in AAA41654 (PubMed:7045682).Curated1
Sequence conflicti1858R → K in AAA41654 (PubMed:7045682).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X15939 mRNA. Translation: CAA34065.1.
J00752 mRNA. Translation: AAA41654.1.
M32698 mRNA. Translation: AAA41659.1.
PIRiS06006.
RefSeqiNP_058936.1. NM_017240.2.
UniGeneiRn.225886.
Rn.54399.

Genome annotation databases

GeneIDi29557.
KEGGirno:29557.
UCSCiRGD:62030. rat.

Similar proteinsi

Entry informationi

Entry nameiMYH7_RAT
AccessioniPrimary (citable) accession number: P02564
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: October 1, 1989
Last modified: November 22, 2017
This is version 156 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Caution

Represents a conventional myosin. This protein should not be confused with the unconventional myosin-7 (MYO7).Curated

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families