ID TBB2_ELEIN Reviewed; 448 AA.
AC Q9ZPN9;
DT 01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-1999, sequence version 1.
DT 27-MAR-2024, entry version 98.
DE RecName: Full=Tubulin beta-2 chain;
DE AltName: Full=Beta-2-tubulin;
GN Name=TUBB2; Synonyms=TUB2;
OS Eleusine indica (Goosegrass) (Cynosurus indicus).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; PACMAD clade;
OC Chloridoideae; Cynodonteae; Eleusininae; Eleusine.
OX NCBI_TaxID=29674;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RX PubMed=10080708; DOI=10.1023/a:1006108412801;
RA Yamamoto E., Baird W.V.;
RT "Molecular characterization of four beta-tubulin genes from dinitroaniline
RT susceptible and resistant biotypes of Eleusine indica.";
RL Plant Mol. Biol. 39:45-61(1999).
CC -!- FUNCTION: Tubulin is the major constituent of microtubules, a cylinder
CC consisting of laterally associated linear protofilaments composed of
CC alpha- and beta-tubulin heterodimers. Microtubules grow by the addition
CC of GTP-tubulin dimers to the microtubule end, where a stabilizing cap
CC forms. Below the cap, tubulin dimers are in GDP-bound state, owing to
CC GTPase activity of alpha-tubulin.
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000250|UniProtKB:P68363};
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; AF059288; AAD20179.1; -; mRNA.
DR AlphaFoldDB; Q9ZPN9; -.
DR SMR; Q9ZPN9; -.
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:0003924; F:GTPase activity; IEA:InterPro.
DR GO; GO:0046872; F:metal ion 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 CDD; cd02187; beta_tubulin; 1.
DR Gene3D; 1.10.287.600; Helix hairpin bin; 1.
DR Gene3D; 3.30.1330.20; Tubulin/FtsZ, C-terminal domain; 1.
DR Gene3D; 3.40.50.1440; Tubulin/FtsZ, GTPase domain; 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; TUBULIN; 1.
DR PANTHER; PTHR11588:SF502; TUBULIN BETA-4 CHAIN; 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; SSF55307; Tubulin C-terminal domain-like; 1.
DR SUPFAM; SSF52490; Tubulin nucleotide-binding domain-like; 1.
DR PROSITE; PS00227; TUBULIN; 1.
DR PROSITE; PS00228; TUBULIN_B_AUTOREG; 1.
PE 2: Evidence at transcript level;
KW Cytoplasm; Cytoskeleton; GTP-binding; Magnesium; Metal-binding;
KW Microtubule; Nucleotide-binding.
FT CHAIN 1..448
FT /note="Tubulin beta-2 chain"
FT /id="PRO_0000048343"
FT REGION 421..448
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 428..448
FT /note="Acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 11
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250|UniProtKB:Q13509"
FT BINDING 69
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250|UniProtKB:P68363"
FT BINDING 69
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000250|UniProtKB:P68363"
FT BINDING 138
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250|UniProtKB:Q13509"
FT BINDING 142
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250|UniProtKB:Q13509"
FT BINDING 143
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250|UniProtKB:Q13509"
FT BINDING 144
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250|UniProtKB:Q13509"
FT BINDING 204
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250|UniProtKB:Q13509"
FT BINDING 226
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250|UniProtKB:Q13509"
SQ SEQUENCE 448 AA; 50363 MW; 4BD179EEB9219EFC CRC64;
MREILHIQGG QCGNQIGAKF WEVVCDEHGI DPTGRYTGTS DLQLERVNVY YNEASCGRFV
PRAVLMDLEP GTMDSVRTGP YGQIFRPDNF VFGQSGAGNN WAKGHYTEGA ELIDSVLDVV
RKEAENCDCL QGFQVCHSLG GGTGSGMGTL LISKIREEYP DRMMLTFSVF PSPKVSDTVV
EPYNATLSVH QLVENADECM VLDNEALYDI CFRTLKLTTP SFGDLNHLIS ATMSGVTCCL
RFPGQLNSDL RKLAVNLIPF PRLHFFMVGF APLTSRGSQQ YRALTVPELT QQMWDAKNMM
CAADPRHGRY LTASAMFRGK MSTKEVDEQM INVQNKNSSY FVEWIPNNVK SSVCDIPPRG
LSMASTFIGN STSIQEMFRR VSEQFTAMFR RKAFLHWYTG EGMDEMEFTE AESNMNDLVS
EYQQYQDATA DEDGEYEDEL DGQEEEDM
//
