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Protein

Tubulin alpha-3 chain

Gene

alphaTub84D

Organism
Drosophila melanogaster (Fruit fly)
Status
Reviewed-Annotation score: -Experimental evidence at transcript leveli

Functioni

Tubulin is the major constituent of microtubules. It binds two moles of GTP, one at an exchangeable site on the beta chain and one at a non-exchangeable site on the alpha chain.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sitei450Involved in polymerization1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi142 – 148GTPSequence analysis7

GO - Molecular functioni

  • GTPase activity Source: InterPro
  • GTP binding Source: UniProtKB-KW
  • myosin binding Source: FlyBase
  • structural constituent of cytoskeleton Source: FlyBase

GO - Biological processi

  • microtubule-based process Source: FlyBase
  • mitotic cytokinesis Source: FlyBase

Keywordsi

LigandGTP-binding, Nucleotide-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Tubulin alpha-3 chain
Gene namesi
Name:alphaTub84D
Synonyms:TubA84D
ORF Names:CG2512
OrganismiDrosophila melanogaster (Fruit fly)
Taxonomic identifieri7227 [NCBI]
Taxonomic lineageiEukaryotaMetazoaEcdysozoaArthropodaHexapodaInsectaPterygotaNeopteraHolometabolaDipteraBrachyceraMuscomorphaEphydroideaDrosophilidaeDrosophilaSophophora
Proteomesi
  • UP000000803 Componenti: Chromosome 3R

Organism-specific databases

FlyBaseiFBgn0003885 alphaTub84D

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, Cytoskeleton, Microtubule

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000481601 – 450Tubulin alpha-3 chainAdd BLAST450

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei40N6-acetyllysineBy similarity1

Post-translational modificationi

Undergoes a tyrosination/detyrosination cycle, the cyclic removal and re-addition of a C-terminal tyrosine residue by the enzymes tubulin tyrosine carboxypeptidase (TTCP) and tubulin tyrosine ligase (TTL), respectively.By similarity
Acetylation of alpha chains at Lys-40 stabilizes microtubules and affects affinity and processivity of microtubule motors. This modification has a role in multiple cellular functions, ranging from cell motility, cell cycle progression or cell differentiation to intracellular trafficking and signaling (By similarity).By similarity

Keywords - PTMi

Acetylation

Proteomic databases

PaxDbiP06605
PRIDEiP06605

Expressioni

Gene expression databases

BgeeiFBgn0003885

Interactioni

Subunit structurei

Dimer of alpha and beta chains. A typical microtubule is a hollow water-filled tube with an outer diameter of 25 nm and an inner diameter of 15 nM. Alpha-beta heterodimers associate head-to-tail to form protofilaments running lengthwise along the microtubule wall with the beta-tubulin subunit facing the microtubule plus end conferring a structural polarity. Microtubules usually have 13 protofilaments but different protofilament numbers can be found in some organisms and specialized cells.

GO - Molecular functioni

  • myosin binding Source: FlyBase

Protein-protein interaction databases

BioGridi66094, 16 interactors
DIPiDIP-23082N
IntActiP06605, 1 interactor
STRINGi7227.FBpp0081062

Structurei

3D structure databases

ProteinModelPortaliP06605
SMRiP06605
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the tubulin family.Curated

Phylogenomic databases

eggNOGiKOG1376 Eukaryota
COG5023 LUCA
GeneTreeiENSGT00760000119060
InParanoidiP06605
KOiK07374
OMAiGICYQAP
OrthoDBiEOG091G0736
PhylomeDBiP06605

Family and domain databases

Gene3Di1.10.287.600, 1 hit
3.30.1330.20, 1 hit
3.40.50.1440, 1 hit
InterProiView protein in InterPro
IPR002452 Alpha_tubulin
IPR008280 Tub_FtsZ_C
IPR000217 Tubulin
IPR018316 Tubulin/FtsZ_2-layer-sand-dom
IPR037103 Tubulin/FtsZ_C_sf
IPR036525 Tubulin/FtsZ_GTPase_sf
IPR023123 Tubulin_C
IPR017975 Tubulin_CS
IPR003008 Tubulin_FtsZ_GTPase
PANTHERiPTHR11588 PTHR11588, 1 hit
PfamiView protein in Pfam
PF00091 Tubulin, 1 hit
PF03953 Tubulin_C, 1 hit
PRINTSiPR01162 ALPHATUBULIN
PR01161 TUBULIN
SMARTiView protein in SMART
SM00864 Tubulin, 1 hit
SM00865 Tubulin_C, 1 hit
SUPFAMiSSF52490 SSF52490, 1 hit
SSF55307 SSF55307, 1 hit
PROSITEiView protein in PROSITE
PS00227 TUBULIN, 1 hit

Sequencei

Sequence statusi: Complete.

P06605-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MRECISIHVG QAGVQIGNAC WELYCLEHGI QPDGQMPSDK TVGGGDDSFN
60 70 80 90 100
TFFSETGAGK HVPRAVFVDL EPTVVDEVRT GTYRQLFHPE QLITGKEDAA
110 120 130 140 150
NNYARGHYTI GKEIVDLVLD RIRKLADQCT GLQGFLIFHS FGGGTGSGFT
160 170 180 190 200
SLLMERLSVD YGKKSKLEFA VYPAPQVSTA VVEPYNSILT THTTLEHSDC
210 220 230 240 250
AFMVDNEAIY DICRRNLDIE RPTYTNLNRL IGQIVSSITA SLRFDGALNV
260 270 280 290 300
DLTEFQTNLV PYPRIHFPLV TYAPVISAEK AYHEQLSVAE ITNACFEPAN
310 320 330 340 350
QMVKVDPRHG KYMACCMLYR GDVVPKDVNA AIATIKTKRT IQFVDWCPTG
360 370 380 390 400
FKVGINYQPP TVVPGGDLAK VQRAVCMLSN TTAIAEAWAR LDHKFDLMYA
410 420 430 440 450
KRAFVHWYVG EGMEEGEFSE AREDLAALEK DYEEVGMDSG DGEGEGAEEY
Length:450
Mass (Da):49,890
Last modified:January 1, 1988 - v1
Checksum:i4C55DCA1D734D5CC
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M14645 Genomic DNA Translation: AAA28987.1
AE014297 Genomic DNA Translation: AAF54007.1
AY084208 mRNA Translation: AAL89946.1
BT003630 mRNA Translation: AAO39634.1
BT016118 mRNA Translation: AAV37003.1
PIRiC26488
RefSeqiNP_524264.1, NM_079540.6
UniGeneiDm.21648

Genome annotation databases

EnsemblMetazoaiFBtr0081538; FBpp0081062; FBgn0003885
GeneIDi40904
KEGGidme:Dmel_CG2512

Similar proteinsi

Entry informationi

Entry nameiTBA3_DROME
AccessioniPrimary (citable) accession number: P06605
Secondary accession number(s): Q9VIB8
Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 1, 1988
Last sequence update: January 1, 1988
Last modified: May 23, 2018
This is version 171 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programDrosophila annotation project

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

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