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Entry version 110 (07 Oct 2020)
Sequence version 2 (01 Nov 1995)
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Protein

Myosin heavy chain IB

Gene

MIB

Organism
Acanthamoeba castellanii (Amoeba)
Status
Reviewed-Annotation score:

Annotation score:4 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Myosin is a protein that binds to F-actin and has ATPase activity that is activated by F-actin.

Miscellaneous

This organism expresses at least three isoforms of myosin I heavy-chain, encoded by genes MIA, MIB, and MIC.

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi103 – 110ATPSequence analysis8

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

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

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Myosin heavy chain IB
Alternative name(s):
Myosin heavy chain IL
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:MIB
Synonyms:MIL
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiAcanthamoeba castellanii (Amoeba)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri5755 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaAmoebozoaDiscoseaLongamoebiaCentramoebidaAcanthamoebidaeAcanthamoeba

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

GO - Cellular componenti

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001233611 – 1147Myosin heavy chain IBAdd BLAST1147

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei315Phosphoserine1 Publication1

Keywords - PTMi

Phosphoprotein

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P19706

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Myosin I heavy chain is single-headed. Dimer of a heavy and a light chain. Inability to self-assemble into filaments.

GO - Molecular functioni

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

11147
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P19706

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P19706

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini9 – 677Myosin motorPROSITE-ProRule annotationAdd BLAST669
Domaini715 – 900TH1PROSITE-ProRule annotationAdd BLAST186
Domaini1090 – 1147SH3PROSITE-ProRule annotationAdd BLAST58

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni551 – 573Actin-bindingPROSITE-ProRule annotationAdd BLAST23

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi908 – 1089Ala/Gly/Pro-rich (TH.2)Add BLAST182

<p>This subsection of the 'Family and domains' section provides general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

Myosin tail domain binds directly to anionic phospholipid membranes; myosins I could therefore move actin relative to membranes and vice versa. TH.2 and SH3 bind tightly to F-actin; this together with the nucleotide-sensitive site in the head, allows single molecules of myosin I to cross-link actin filaments.

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Keywords - Domaini

SH3 domain

Family and domain databases

Conserved Domains Database

More...
CDDi
cd01378, MYSc_Myo1, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.850.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR036961, Kinesin_motor_dom_sf
IPR001609, Myosin_head_motor_dom
IPR010926, Myosin_TH1
IPR036072, MYSc_Myo1
IPR027417, P-loop_NTPase
IPR036028, SH3-like_dom_sf
IPR001452, SH3_domain

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00063, Myosin_head, 1 hit
PF06017, Myosin_TH1, 1 hit
PF00018, SH3_1, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00193, MYOSINHEAVY
PR00452, SH3DOMAIN

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00242, MYSc, 1 hit
SM00326, SH3, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF50044, SSF50044, 1 hit
SSF52540, SSF52540, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51456, MYOSIN_MOTOR, 1 hit
PS50002, SH3, 1 hit
PS51757, TH1, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P19706-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGKAAVEQRG VDDLVLMPKI TEQDICANLE KRYFNDLIYT NIGPVLISVN
60 70 80 90 100
PFRRIDALLT DECLHCYRGR YQHEQPPHVY ALAEAAYRGV KSENINQCVI
110 120 130 140 150
ISGESGAGKT EASKLVMQYV AAVSGNSGGV DFVKHSNPLL EAFGNAKTLR
160 170 180 190 200
NNNSSRFGKY FEIHFNRLGE PCGGRITNYL LEKSRVTFQT RGERSFHIFY
210 220 230 240 250
QLLAGASDAE AQEMQLYAPE NFNYLNQSAC YTVDGIDDIK EFADTRNAIN
260 270 280 290 300
VMGMTAEEQR QVFHLVAGIL HLGNVAFHDG GKGTAAVHDR TPFALKNALL
310 320 330 340 350
FRVLNTGGAG AKKMSTYNVP QNVEQAASAR DALAKTIYSR MFDWIVSKVN
360 370 380 390 400
EALQKQGGSG DHNNNMIGVL DIFGFEIFEQ NGFEQFCINY VNEKLQQYFI
410 420 430 440 450
ELTLKAEQEE YVNEGIQWTP IKYFNNKVVC ELIEGKRPPG IFSLLDDICF
460 470 480 490 500
TMHAQSDGMD GKFLQKCQGG FPSHLHFRGM NNAFSIKHYA GEVTYEAEGF
510 520 530 540 550
CEKNKDTLFD DLIAVIQESE NRLLVSWFPE DTKQLQKKRP TTAGFKLKTS
560 570 580 590 600
CDALMEALSR CSPHYIRCIK PNDNKAYHDW DATRTKHQVQ YLGLLENVRV
610 620 630 640 650
RRAGFAYRAE FDRFLRRYKK LSPKTWGIWG EWSGAPKDGC QTLLNDLGLD
660 670 680 690 700
TSQWQLGKSK VFIRYPETLF HLEECLDRKD YDCTLRIQKA WRHWKSRKHQ
710 720 730 740 750
LEQRKMAADL LKGKKERQRH SVNRKYEFDY INYDANYPLQ DCVRSSGRDK
760 770 780 790 800
EATAFTDQVL VLNRRGKPER RDLIVTNEAV YFAMRKKKSG QVVYNLKRRI
810 820 830 840 850
PLGEIASLSL STLQDNYVVI HHNQYDMVFE NDKKTEIVTI LMENYKMSGG
860 870 880 890 900
RDLPVNFNDN ITYKASNGAQ RRLTFSKNES ASAQPSIKKS RANIQIGIAT
910 920 930 940 950
GLPKETDSSP PNWTPSGGGG GYGGGRGGGG GGRGAAGGGR GGFGGGGGGG
960 970 980 990 1000
YSQPVAQAQP VAQVPQPVAA VPSAGRGGPG MGGPGAGRGG PGMGRGGPGM
1010 1020 1030 1040 1050
GGPGAGRGGP GMGGPGGPGR GGPGGPGAGR GGPGGPGAGR GGPGMGGPGG
1060 1070 1080 1090 1100
AGRGGPGAGR GGPGMGGPGA GRGGPGAGRG AAPAPAPAAP AKPQVKALYD
1110 1120 1130 1140
YDAQTGDELT FKEGDTIIVH QKDPAGWWEG ELNGKRGWVP ANYVQDI
Length:1,147
Mass (Da):124,959
Last modified:November 1, 1995 - v2
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iB76DE9C076381054
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
M30780 Genomic DNA Translation: AAA27708.1

Protein sequence database of the Protein Information Resource

More...
PIRi
JQ0095, MWAXIB

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M30780 Genomic DNA Translation: AAA27708.1
PIRiJQ0095, MWAXIB

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2DRKX-ray1.42A1094-1147[»]
2DRMX-ray1.35A/B/C/D1094-1147[»]
SMRiP19706
ModBaseiSearch...
PDBe-KBiSearch...

PTM databases

iPTMnetiP19706

Miscellaneous databases

EvolutionaryTraceiP19706

Family and domain databases

CDDicd01378, MYSc_Myo1, 1 hit
Gene3Di3.40.850.10, 1 hit
InterProiView protein in InterPro
IPR036961, Kinesin_motor_dom_sf
IPR001609, Myosin_head_motor_dom
IPR010926, Myosin_TH1
IPR036072, MYSc_Myo1
IPR027417, P-loop_NTPase
IPR036028, SH3-like_dom_sf
IPR001452, SH3_domain
PfamiView protein in Pfam
PF00063, Myosin_head, 1 hit
PF06017, Myosin_TH1, 1 hit
PF00018, SH3_1, 1 hit
PRINTSiPR00193, MYOSINHEAVY
PR00452, SH3DOMAIN
SMARTiView protein in SMART
SM00242, MYSc, 1 hit
SM00326, SH3, 1 hit
SUPFAMiSSF50044, SSF50044, 1 hit
SSF52540, SSF52540, 1 hit
PROSITEiView protein in PROSITE
PS51456, MYOSIN_MOTOR, 1 hit
PS50002, SH3, 1 hit
PS51757, TH1, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiMYSB_ACACA
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P19706
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 1, 1991
Last sequence update: November 1, 1995
Last modified: October 7, 2020
This is version 110 of the entry and version 2 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

3D-structure, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
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