ID   TBB2_DROER              Reviewed;         446 AA.
AC   P83130;
DT   02-NOV-2001, integrated into UniProtKB/Swiss-Prot.
DT   02-NOV-2001, sequence version 1.
DT   03-AUG-2022, entry version 106.
DE   RecName: Full=Tubulin beta-2 chain;
DE   AltName: Full=Beta-2-tubulin;
GN   Name=betaTub85D;
OS   Drosophila erecta (Fruit fly).
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC   Neoptera; Endopterygota; Diptera; Brachycera; Muscomorpha; Ephydroidea;
OC   Drosophilidae; Drosophila; Sophophora.
OX   NCBI_TaxID=7220;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=3037352; DOI=10.1128/mcb.7.6.2231-2242.1987;
RA   Rudolph J.E., Kimble M., Hoyle H.D., Subler M.A., Raff E.C.;
RT   "Three Drosophila beta-tubulin sequences: a developmentally regulated
RT   isoform (beta 3), the testis-specific isoform (beta 2), and an assembly-
RT   defective mutation of the testis-specific isoform (B2t8) reveal both an
RT   ancient divergence in metazoan isotypes and structural constraints for
RT   beta-tubulin function.";
RL   Mol. Cell. Biol. 7:2231-2242(1987).
CC   -!- FUNCTION: Tubulin is the major constituent of microtubules. It binds
CC       two moles of GTP, one at an exchangeable site on the beta chain and one
CC       at a non-exchangeable site on the alpha chain.
CC   -!- SUBUNIT: Dimer of alpha and beta chains. A typical microtubule is a
CC       hollow water-filled tube with an outer diameter of 25 nm and an inner
CC       diameter of 15 nM. Alpha-beta heterodimers associate head-to-tail to
CC       form protofilaments running lengthwise along the microtubule wall with
CC       the beta-tubulin subunit facing the microtubule plus end conferring a
CC       structural polarity. Microtubules usually have 13 protofilaments but
CC       different protofilament numbers can be found in some organisms and
CC       specialized cells.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm, cytoskeleton.
CC   -!- SIMILARITY: Belongs to the tubulin family. {ECO:0000305}.
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DR   EMBL; M16922; AAA28990.1; -; Genomic_DNA.
DR   AlphaFoldDB; P83130; -.
DR   SMR; P83130; -.
DR   STRING; 7220.FBpp0135920; -.
DR   PRIDE; P83130; -.
DR   eggNOG; KOG1375; Eukaryota.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-KW.
DR   GO; GO:0005874; C:microtubule; IEA:UniProtKB-KW.
DR   GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR   GO; GO:0005200; F:structural constituent of cytoskeleton; IEA:InterPro.
DR   GO; GO:0007017; P:microtubule-based process; IEA:InterPro.
DR   GO; GO:0007435; P:salivary gland morphogenesis; IEA:EnsemblMetazoa.
DR   Gene3D; 1.10.287.600; -; 1.
DR   Gene3D; 3.30.1330.20; -; 1.
DR   Gene3D; 3.40.50.1440; -; 1.
DR   InterPro; IPR013838; Beta-tubulin_BS.
DR   InterPro; IPR002453; Beta_tubulin.
DR   InterPro; IPR008280; Tub_FtsZ_C.
DR   InterPro; IPR000217; Tubulin.
DR   InterPro; IPR037103; Tubulin/FtsZ-like_C.
DR   InterPro; IPR018316; Tubulin/FtsZ_2-layer-sand-dom.
DR   InterPro; IPR036525; Tubulin/FtsZ_GTPase_sf.
DR   InterPro; IPR023123; Tubulin_C.
DR   InterPro; IPR017975; Tubulin_CS.
DR   InterPro; IPR003008; Tubulin_FtsZ_GTPase.
DR   PANTHER; PTHR11588; PTHR11588; 1.
DR   Pfam; PF00091; Tubulin; 1.
DR   Pfam; PF03953; Tubulin_C; 1.
DR   PRINTS; PR01163; BETATUBULIN.
DR   PRINTS; PR01161; TUBULIN.
DR   SMART; SM00864; Tubulin; 1.
DR   SMART; SM00865; Tubulin_C; 1.
DR   SUPFAM; SSF52490; SSF52490; 1.
DR   SUPFAM; SSF55307; SSF55307; 1.
DR   PROSITE; PS00227; TUBULIN; 1.
DR   PROSITE; PS00228; TUBULIN_B_AUTOREG; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Cytoskeleton; GTP-binding; Microtubule; Nucleotide-binding.
FT   CHAIN           1..446
FT                   /note="Tubulin beta-2 chain"
FT                   /id="PRO_0000048277"
FT   REGION          424..446
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        428..446
FT                   /note="Acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         140..146
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   446 AA;  49955 MW;  4FA249632EDDB414 CRC64;
     MREIVHIQAG QCGNQIGGKF WEVISDEHCI DATGTYYGDS DLQLERINVY YNEATGAKYV
     PRAILVDLEP GTMDSVRSGR FGQIFRPDNF VFGQSGAGNN WAKGHYTEGA ELVDSVLDVV
     RKESEGCDCL QGFQLTHSLG GGTGSGMGTL LISKIREEYP DRIMNTFSVV PSPKVSDTVV
     EPYNATLSVH QLVENTDETY CIDNEALYDI CFRTLKLTTP TYGDLNHLVS ATMSGVTTCL
     RFPGQLNADL RKLAVNMVPF PRLHFFMPGF APLTSRGSQQ YRALTVPELT QQMFDAKNMM
     AACDPRHGRY LTVAAIFRGR MSMKEVDEQM LNIQNKNSSF FVEWIPNNCK TAVCDIPPRG
     LKMSATFIGN STAIQELFKR VSEQFTAMFR RKAFLHWYTG EGMDEMEFTE AESNMNDLVS
     EYQQYQEATA DEEGEFDEDE EGGGDE