ID   TBB_BOTFU               Reviewed;         447 AA.
AC   P53373;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   03-AUG-2022, entry version 102.
DE   RecName: Full=Tubulin beta chain;
DE   AltName: Full=Beta-tubulin;
GN   Name=tubA; Synonyms=benA, btuB;
OS   Botryotinia fuckeliana (Noble rot fungus) (Botrytis cinerea).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Leotiomycetes;
OC   Helotiales; Sclerotiniaceae; Botrytis.
OX   NCBI_TaxID=40559;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=SAS56;
RA   van der Vlugt-Bergmans C.J.B., Jansen E.M., van't Klooster J.W.,
RA   van Kan J.A.L.;
RL   Submitted (FEB-1996) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=91T-1;
RA   Lee C.W., Park S.Y., Jung O.J.;
RL   Submitted (OCT-1995) to the EMBL/GenBank/DDBJ databases.
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 165-291.
RC   STRAIN=ICMP 8583;
RA   Luck J.E., Gillings M.R.;
RL   Submitted (AUG-1995) to the EMBL/GenBank/DDBJ databases.
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; Z69263; CAA93254.1; -; Genomic_DNA.
DR   EMBL; U27198; AAB60307.1; -; Genomic_DNA.
DR   EMBL; U28267; AAB60296.1; -; Genomic_DNA.
DR   AlphaFoldDB; P53373; -.
DR   SMR; P53373; -.
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:0046677; P:response to antibiotic; IEA:UniProtKB-KW.
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   Antibiotic resistance; Cytoplasm; Cytoskeleton; GTP-binding; Microtubule;
KW   Nucleotide-binding.
FT   CHAIN           1..447
FT                   /note="Tubulin beta chain"
FT                   /id="PRO_0000048396"
FT   REGION          425..447
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        431..447
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:0000250"
FT   VARIANT         198
FT                   /note="E -> A (in resistance to benomyl and benzimidazole)"
FT   CONFLICT        235
FT                   /note="G -> R (in Ref. 3; AAB60296)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   447 AA;  49798 MW;  5506EFCCC7E783F3 CRC64;
     MREIVHLQTG QCGNQIGAAF WQTISGEHGL DGSGVYNGTS DLQLERMNVY FNEASGNKYV
     PRAVLVDLEP GTMDAVRAGP FGQLFRPDNF VFGQSGAGNN WAKGHYTEGA ELVDQVLDVV
     RREAEGCDCL QGFQITHSLG GGTGAGMGTL LISKIREEFP DRMMATFSVV PSPKVSDTVV
     EPYNATLSVH QLVENSDETF CIDNEALYDI CMRTLKLSNP SYGDLNHLVS AVMSGVTTCL
     RFPGQLNSDL RKLAVNMVPF PRLHFFMVGF APLTSRGAHS FRAVTVPELT QQMYDPKNMM
     AASDFRNGRY LTCSAIFRGK VSMKEVEDQM RNVQNKNSSY FVEWIPNNVQ TALCSIPPRG
     LKMSSTFVGN STSIQELFKR VGDQFTAMFR RKAFLHWYTG EGMDEMEFTE AESNMNDLVS
     EYQQYQDASI SEGEEEYEEE VPIEGEE