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Protein

Myosin-IIIa

Gene

MYO3A

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Probable actin-based motor with a protein kinase activity. Probably plays a role in vision and hearing (PubMed:12032315). Required for normal cochlear hair bundle development and hearing. Plays an important role in the early steps of cochlear hair bundle morphogenesis. Influences the number and lengths of stereocilia to be produced and limits the growth of microvilli within the forming auditory hair bundles thereby contributing to the architecture of the hair bundle, including its staircase pattern. Involved in the elongation of actin in stereocilia tips by transporting the actin regulatory factor ESPN to the plus ends of actin filaments (By similarity).By similarity1 Publication

Catalytic activityi

ATP + a protein = ADP + a phosphoprotein.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei50ATPPROSITE-ProRule annotation1
Active sitei150Proton acceptorPROSITE-ProRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi27 – 35ATPPROSITE-ProRule annotation9

GO - Molecular functioni

  • actin binding Source: UniProtKB-KW
  • actin-dependent ATPase activity Source: UniProtKB
  • ADP binding Source: UniProtKB
  • ATP binding Source: UniProtKB-KW
  • calmodulin binding Source: UniProtKB
  • microfilament motor activity Source: UniProtKB
  • plus-end directed microfilament motor activity Source: UniProtKB
  • protein kinase activity Source: UniProtKB
  • protein serine/threonine kinase activity Source: UniProtKB-KW

GO - Biological processi

  • cochlea morphogenesis Source: UniProtKB
  • protein autophosphorylation Source: UniProtKB
  • response to stimulus Source: UniProtKB-KW
  • sensory perception of sound Source: UniProtKB
  • visual perception Source: UniProtKB-KW

Keywordsi

Molecular functionActin-binding, Kinase, Motor protein, Myosin, Serine/threonine-protein kinase, Transferase
Biological processHearing, Sensory transduction, Vision
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

SignaLinkiQ8NEV4

Names & Taxonomyi

Protein namesi
Recommended name:
Myosin-IIIa (EC:2.7.11.1)
Gene namesi
Name:MYO3A
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 10

Organism-specific databases

EuPathDBiHostDB:ENSG00000095777.14
HGNCiHGNC:7601 MYO3A
MIMi606808 gene
neXtProtiNX_Q8NEV4

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

Cell projection, Cytoplasm, Cytoskeleton

Pathology & Biotechi

Involvement in diseasei

Deafness, autosomal recessive, 30 (DFNB30)1 Publication
The disease is caused by mutations affecting the gene represented in this entry.
Disease descriptionA form of non-syndromic deafness characterized by bilateral progressive hearing loss, which first affects the high frequencies. Hearing loss begins in the second decade, and by age 50 is severe in high and middle frequencies and moderate at low frequencies.
See also OMIM:607101

Keywords - Diseasei

Deafness, Non-syndromic deafness

Organism-specific databases

DisGeNETi53904
GeneReviewsiMYO3A
MalaCardsiMYO3A
MIMi607101 phenotype
OpenTargetsiENSG00000095777
Orphaneti90636 Autosomal recessive non-syndromic sensorineural deafness type DFNB
PharmGKBiPA31405

Chemistry databases

ChEMBLiCHEMBL5546
GuidetoPHARMACOLOGYi2112

Polymorphism and mutation databases

BioMutaiMYO3A
DMDMi160112826

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000864131 – 1616Myosin-IIIaAdd BLAST1616

Proteomic databases

EPDiQ8NEV4
PaxDbiQ8NEV4
PeptideAtlasiQ8NEV4
PRIDEiQ8NEV4
ProteomicsDBi73220

PTM databases

iPTMnetiQ8NEV4
PhosphoSitePlusiQ8NEV4

Expressioni

Tissue specificityi

Strongest expression in retina, retinal pigment epithelial cells, cochlea and pancreas.

Gene expression databases

BgeeiENSG00000095777
CleanExiHS_MYO3A
ExpressionAtlasiQ8NEV4 baseline and differential
GenevisibleiQ8NEV4 HS

Organism-specific databases

HPAiHPA048951
HPA051893

Interactioni

Subunit structurei

Interacts with MORN4 (PubMed:25822849). Interacts (via C-terminus) with ESPN and ESPNL (By similarity).By similarity1 Publication

GO - Molecular functioni

  • actin binding Source: UniProtKB-KW
  • calmodulin binding Source: UniProtKB

Protein-protein interaction databases

BioGridi119814, 6 interactors
IntActiQ8NEV4, 1 interactor
STRINGi9606.ENSP00000265944

Chemistry databases

BindingDBiQ8NEV4

Structurei

3D structure databases

ProteinModelPortaliQ8NEV4
SMRiQ8NEV4
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini21 – 287Protein kinasePROSITE-ProRule annotationAdd BLAST267
Domaini338 – 1053Myosin motorPROSITE-ProRule annotationAdd BLAST716
Domaini1055 – 1084IQ 1PROSITE-ProRule annotationAdd BLAST30
Domaini1082 – 1111IQ 2PROSITE-ProRule annotationAdd BLAST30
Domaini1346 – 1375IQ 3PROSITE-ProRule annotationAdd BLAST30

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni934 – 956Actin-bindingPROSITE-ProRule annotationAdd BLAST23
Regioni1401 – 1479Interaction with MORN41 PublicationAdd BLAST79

Sequence similaritiesi

In the C-terminal section; belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Myosin family.Curated
In the N-terminal section; belongs to the protein kinase superfamily. STE Ser/Thr protein kinase family.Curated

Keywords - Domaini

Repeat

Phylogenomic databases

eggNOGiKOG0587 Eukaryota
KOG4229 Eukaryota
COG5022 LUCA
GeneTreeiENSGT00920000149012
HOGENOMiHOG000234203
HOVERGENiHBG052555
InParanoidiQ8NEV4
KOiK08834
OMAiFWRPKRM
OrthoDBiEOG091G00C2
PhylomeDBiQ8NEV4
TreeFamiTF326512

Family and domain databases

CDDicd01379 MYSc_Myo3, 1 hit
InterProiView protein in InterPro
IPR000048 IQ_motif_EF-hand-BS
IPR011009 Kinase-like_dom_sf
IPR001609 Myosin_head_motor_dom
IPR036083 MYSc_Myo3
IPR027417 P-loop_NTPase
IPR000719 Prot_kinase_dom
IPR017441 Protein_kinase_ATP_BS
PfamiView protein in Pfam
PF00612 IQ, 2 hits
PF00063 Myosin_head, 1 hit
PF00069 Pkinase, 1 hit
PRINTSiPR00193 MYOSINHEAVY
SMARTiView protein in SMART
SM00015 IQ, 3 hits
SM00242 MYSc, 1 hit
SM00220 S_TKc, 1 hit
SUPFAMiSSF52540 SSF52540, 2 hits
SSF56112 SSF56112, 1 hit
PROSITEiView protein in PROSITE
PS50096 IQ, 3 hits
PS51456 MYOSIN_MOTOR, 1 hit
PS00107 PROTEIN_KINASE_ATP, 1 hit
PS50011 PROTEIN_KINASE_DOM, 1 hit

Sequences (2)i

Sequence statusi: Complete.

This entry describes 2 isoformsi produced by alternative splicing. AlignAdd to basket

Isoform 1 (identifier: Q8NEV4-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MFPLIGKTII FDNFPDPSDT WEITETIGKG TYGKVFKVLN KKNGQKAAVK
60 70 80 90 100
ILDPIHDIDE EIEAEYNILK ALSDHPNVVR FYGIYFKKDK VNGDKLWLVL
110 120 130 140 150
ELCSGGSVTD LVKGFLKRGE RMSEPLIAYI LHEALMGLQH LHNNKTIHRD
160 170 180 190 200
VKGNNILLTT EGGVKLVDFG VSAQLTSTRH RRNTSVGTPF WMAPEVIACE
210 220 230 240 250
QQLDTTYDAR CDTWSLGITA IELGDGDPPL ADLHPMRALF KIPRNPPPKL
260 270 280 290 300
RQPELWSAEF NDFISKCLTK DYEKRPTVSE LLQHKFITQI EGKDVMLQKQ
310 320 330 340 350
LTEFIGIHQC MGGTEKARRE RIHTKKGNFN RPLISNLKDV DDLATLEILD
360 370 380 390 400
ENTVSEQLEK CYSRDQIYVY VGDILIALNP FQSLGLYSTK HSKLYIGSKR
410 420 430 440 450
TASPPHIFAM ADLGYQSMIT YNSDQCIVIS GESGAGKTEN AHLLVQQLTV
460 470 480 490 500
LGKANNRTLQ EKILQVNNLV EAFGNACTII NDNSSRFGKY LEMKFTSSGA
510 520 530 540 550
VVGAQISEYL LEKSRVIHQA IGEKNFHIFY YIYAGLAEKK KLAHYKLPEN
560 570 580 590 600
KPPRYLQNDH LRTVQDIMNN SFYKSQYELI EQCFKVIGFT MEQLGSIYSI
610 620 630 640 650
LAAILNVGNI EFSSVATEHQ IDKSHISNHT ALENCASLLC IRADELQEAL
660 670 680 690 700
TSHCVVTRGE TIIRPNTVEK ATDVRDAMAK TLYGRLFSWI VNCINSLLKH
710 720 730 740 750
DSSPSGNGDE LSIGILDIFG FENFKKNSFE QLCINIANEQ IQYYYNQHVF
760 770 780 790 800
AWEQNEYLNE DVDARVIEYE DNWPLLDMFL QKPMGLLSLL DEESRFPKAT
810 820 830 840 850
DQTLVEKFEG NLKSQYFWRP KRMELSFGIH HYAGKVLYNA SGFLAKNRDT
860 870 880 890 900
LPTDIVLLLR SSDNSVIRQL VNHPLTKTGN LPHSKTKNVI NYQMRTSEKL
910 920 930 940 950
INLAKGDTGE ATRHARETTN MKTQTVASYF RYSLMDLLSK MVVGQPHFVR
960 970 980 990 1000
CIKPNSERQA RKYDKEKVLL QLRYTGILET ARIRRLGFSH RILFANFIKR
1010 1020 1030 1040 1050
YYLLCYKSSE EPRMSPDTCA TILEKAGLDN WALGKTKVFL KYYHVEQLNL
1060 1070 1080 1090 1100
MRKEAIDKLI LIQACVRAFL CSRRYQKIQE KRKESAIIIQ SAARGHLVRK
1110 1120 1130 1140 1150
QRKEIVDMKN TAVTTIQTSD QEFDYKKNFE NTRESFVKKQ AENAISANER
1160 1170 1180 1190 1200
FISAPNNKGS VSVVKTSTFK PEEETTNAVE SNNRVYQTPK KMNNVYEEEV
1210 1220 1230 1240 1250
KQEFYLVGPE VSPKQKSVKD LEENSNLRKV EKEEAMIQSY YQRYTEERNC
1260 1270 1280 1290 1300
EESKAAYLER KAISERPSYP VPWLAENETS FKKTLEPTLS QRSIYQNANS
1310 1320 1330 1340 1350
MEKEKKTSVV TQRAPICSQE EGRGRLRHET VKERQVEPVT QAQEEEDKAA
1360 1370 1380 1390 1400
VFIQSKYRGY KRRQQLRKDK MSSFKHQRIV TTPTEVARNT HNLYSYPTKH
1410 1420 1430 1440 1450
EEINNIKKKD NKDSKATSER EACGLAIFSK QISKLSEEYF ILQKKLNEMI
1460 1470 1480 1490 1500
LSQQLKSLYL GVSHHKPINR RVSSQQCLSG VCKGEEPKIL RPPRRPRKPK
1510 1520 1530 1540 1550
TLNNPEDSTY YYLLHKSIQE EKRRPRKDSQ GKLLDLEDFY YKEFLPSRSG
1560 1570 1580 1590 1600
PKEHSPSLRE RRPQQELQNQ CIKANERCWA AESPEKEEER EPAANPYDFR
1610
RLLRKTSQRR RLVQQS
Length:1,616
Mass (Da):186,208
Last modified:November 13, 2007 - v2
Checksum:i7D126A7E22520574
GO
Isoform 2 (identifier: Q8NEV4-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     245-247: NPP → SDD
     248-1616: Missing.

Note: No experimental confirmation available.
Show »
Length:247
Mass (Da):27,678
Checksum:iBAB051B0CFF58532
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti418M → I in AAF70861 (PubMed:10936054).Curated1
Sequence conflicti418M → I in AAM34500 (PubMed:12032315).Curated1
Sequence conflicti636A → V in AAF70861 (PubMed:10936054).Curated1
Sequence conflicti636A → V in AAM34500 (PubMed:12032315).Curated1
Sequence conflicti848 – 851RDTL → KTLV in AAM34500 (PubMed:12032315).Curated4
Sequence conflicti886 – 890TKNVI → LKML in AAM34500 (PubMed:12032315).Curated5
Sequence conflicti1099R → G in AAF70861 (PubMed:10936054).Curated1
Sequence conflicti1099R → G in AAM34500 (PubMed:12032315).Curated1
Sequence conflicti1217S → F in AAF70861 (PubMed:10936054).Curated1
Sequence conflicti1217S → F in AAM34500 (PubMed:12032315).Curated1
Sequence conflicti1378R → K in AAF70861 (PubMed:10936054).Curated1
Sequence conflicti1378R → K in AAM34500 (PubMed:12032315).Curated1

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Natural variantiVAR_040871178T → I1 PublicationCorresponds to variant dbSNP:rs33968748EnsemblClinVar.1
Natural variantiVAR_021866204D → N. Corresponds to variant dbSNP:rs3737274EnsemblClinVar.1
Natural variantiVAR_040872319R → H1 PublicationCorresponds to variant dbSNP:rs3824700EnsemblClinVar.1
Natural variantiVAR_040873348I → V1 PublicationCorresponds to variant dbSNP:rs3824699EnsemblClinVar.1
Natural variantiVAR_040874369V → I1 PublicationCorresponds to variant dbSNP:rs3817420EnsemblClinVar.1
Natural variantiVAR_040875525N → K in an ovarian mucinous carcinoma sample; somatic mutation. 1 Publication1
Natural variantiVAR_040876833A → S1 PublicationCorresponds to variant dbSNP:rs33947968EnsemblClinVar.1
Natural variantiVAR_021867956S → N1 PublicationCorresponds to variant dbSNP:rs3758449EnsemblClinVar.1
Natural variantiVAR_040877956S → R in an ovarian serous carcinoma sample; somatic mutation. 1 Publication1
Natural variantiVAR_0408781032A → T1 PublicationCorresponds to variant dbSNP:rs34918608EnsemblClinVar.1
Natural variantiVAR_0408791045V → M1 PublicationCorresponds to variant dbSNP:rs35447806EnsemblClinVar.1
Natural variantiVAR_0408801137V → M1 PublicationCorresponds to variant dbSNP:rs35449183Ensembl.1
Natural variantiVAR_0408811195V → A1 PublicationCorresponds to variant dbSNP:rs35675577EnsemblClinVar.1
Natural variantiVAR_0339051284T → S1 PublicationCorresponds to variant dbSNP:rs3740231EnsemblClinVar.1
Natural variantiVAR_0408821287P → T1 PublicationCorresponds to variant dbSNP:rs35575696EnsemblClinVar.1
Natural variantiVAR_0227791313R → S3 PublicationsCorresponds to variant dbSNP:rs1999240EnsemblClinVar.1
Natural variantiVAR_0408831347D → H in a renal clear cell carcinoma sample; somatic mutation. 1 Publication1
Natural variantiVAR_0408841417T → I1 PublicationCorresponds to variant dbSNP:rs34151474EnsemblClinVar.1
Natural variantiVAR_0408851488K → E1 PublicationCorresponds to variant dbSNP:rs34204285EnsemblClinVar.1

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Alternative sequenceiVSP_056231245 – 247NPP → SDD in isoform 2. 1 Publication3
Alternative sequenceiVSP_056232248 – 1616Missing in isoform 2. 1 PublicationAdd BLAST1369

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF229172 mRNA Translation: AAF70861.1
AY101367 mRNA Translation: AAM34500.1
AL162503 Genomic DNA No translation available.
AL358612 Genomic DNA No translation available.
AL360217 Genomic DNA No translation available.
AL391812 Genomic DNA No translation available.
BC036079 mRNA Translation: AAH36079.1
CCDSiCCDS7148.1 [Q8NEV4-1]
RefSeqiNP_059129.3, NM_017433.4 [Q8NEV4-1]
XP_011517800.1, XM_011519498.2 [Q8NEV4-1]
XP_011517801.1, XM_011519499.1 [Q8NEV4-1]
XP_011517802.1, XM_011519500.2 [Q8NEV4-1]
UniGeneiHs.662630

Genome annotation databases

EnsembliENST00000265944; ENSP00000265944; ENSG00000095777 [Q8NEV4-1]
ENST00000376302; ENSP00000365479; ENSG00000095777 [Q8NEV4-2]
ENST00000642920; ENSP00000495965; ENSG00000095777 [Q8NEV4-1]
GeneIDi53904
KEGGihsa:53904
UCSCiuc001ism.3 human [Q8NEV4-1]

Keywords - Coding sequence diversityi

Alternative splicing, Polymorphism

Similar proteinsi

Entry informationi

Entry nameiMYO3A_HUMAN
AccessioniPrimary (citable) accession number: Q8NEV4
Secondary accession number(s): Q4G0X2
, Q5VZ28, Q8WX17, Q9NYS8
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 26, 2004
Last sequence update: November 13, 2007
Last modified: June 20, 2018
This is version 153 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

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