ID TIC21_ARATH Reviewed; 296 AA.
AC Q9SHU7;
DT 19-OCT-2011, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-2000, sequence version 1.
DT 24-JAN-2024, entry version 120.
DE RecName: Full=Protein TIC 21, chloroplastic;
DE AltName: Full=Protein CHLOROPLAST IMPORT APPARATUS 5;
DE Short=AtCIA5;
DE AltName: Full=Protein PERMEASE IN CHLOROPLASTS 1;
DE Short=AtPIC1;
DE AltName: Full=Translocon at the inner envelope membrane of chloroplasts 21;
DE Short=AtTIC21;
DE Flags: Precursor;
GN Name=TIC21; Synonyms=CIA5, PIC1; OrderedLocusNames=At2g15290;
GN ORFNames=F27O10.6;
OS Arabidopsis thaliana (Mouse-ear cress).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis.
OX NCBI_TaxID=3702;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA], MUTAGENESIS OF LYS-112 AND GLY-205,
RP PROTEIN SEQUENCE OF N-TERMINUS, SUBCELLULAR LOCATION, SUBUNIT, AND
RP DISRUPTION PHENOTYPE.
RX PubMed=16891400; DOI=10.1105/tpc.106.044305;
RA Teng Y.S., Su Y.S., Chen L.J., Lee Y.J., Hwang I., Li H.M.;
RT "Tic21 is an essential translocon component for protein translocation
RT across the chloroplast inner envelope membrane.";
RL Plant Cell 18:2247-2257(2006).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=cv. Columbia;
RX PubMed=10617197; DOI=10.1038/45471;
RA Lin X., Kaul S., Rounsley S.D., Shea T.P., Benito M.-I., Town C.D.,
RA Fujii C.Y., Mason T.M., Bowman C.L., Barnstead M.E., Feldblyum T.V.,
RA Buell C.R., Ketchum K.A., Lee J.J., Ronning C.M., Koo H.L., Moffat K.S.,
RA Cronin L.A., Shen M., Pai G., Van Aken S., Umayam L., Tallon L.J.,
RA Gill J.E., Adams M.D., Carrera A.J., Creasy T.H., Goodman H.M.,
RA Somerville C.R., Copenhaver G.P., Preuss D., Nierman W.C., White O.,
RA Eisen J.A., Salzberg S.L., Fraser C.M., Venter J.C.;
RT "Sequence and analysis of chromosome 2 of the plant Arabidopsis thaliana.";
RL Nature 402:761-768(1999).
RN [3]
RP GENOME REANNOTATION.
RC STRAIN=cv. Columbia;
RX PubMed=27862469; DOI=10.1111/tpj.13415;
RA Cheng C.Y., Krishnakumar V., Chan A.P., Thibaud-Nissen F., Schobel S.,
RA Town C.D.;
RT "Araport11: a complete reannotation of the Arabidopsis thaliana reference
RT genome.";
RL Plant J. 89:789-804(2017).
RN [4]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC STRAIN=cv. Columbia;
RX PubMed=14593172; DOI=10.1126/science.1088305;
RA Yamada K., Lim J., Dale J.M., Chen H., Shinn P., Palm C.J., Southwick A.M.,
RA Wu H.C., Kim C.J., Nguyen M., Pham P.K., Cheuk R.F., Karlin-Newmann G.,
RA Liu S.X., Lam B., Sakano H., Wu T., Yu G., Miranda M., Quach H.L.,
RA Tripp M., Chang C.H., Lee J.M., Toriumi M.J., Chan M.M., Tang C.C.,
RA Onodera C.S., Deng J.M., Akiyama K., Ansari Y., Arakawa T., Banh J.,
RA Banno F., Bowser L., Brooks S.Y., Carninci P., Chao Q., Choy N., Enju A.,
RA Goldsmith A.D., Gurjal M., Hansen N.F., Hayashizaki Y., Johnson-Hopson C.,
RA Hsuan V.W., Iida K., Karnes M., Khan S., Koesema E., Ishida J., Jiang P.X.,
RA Jones T., Kawai J., Kamiya A., Meyers C., Nakajima M., Narusaka M.,
RA Seki M., Sakurai T., Satou M., Tamse R., Vaysberg M., Wallender E.K.,
RA Wong C., Yamamura Y., Yuan S., Shinozaki K., Davis R.W., Theologis A.,
RA Ecker J.R.;
RT "Empirical analysis of transcriptional activity in the Arabidopsis
RT genome.";
RL Science 302:842-846(2003).
RN [5]
RP FUNCTION, SUBCELLULAR LOCATION, TISSUE SPECIFICITY, AND DISRUPTION
RP PHENOTYPE.
RX PubMed=17337631; DOI=10.1105/tpc.106.047407;
RA Duy D., Wanner G., Meda A.R., von Wiren N., Soll J., Philippar K.;
RT "PIC1, an ancient permease in Arabidopsis chloroplasts, mediates iron
RT transport.";
RL Plant Cell 19:986-1006(2007).
RN [6]
RP FUNCTION, AND DISRUPTION PHENOTYPE.
RX PubMed=19460081; DOI=10.1111/j.1420-9101.2009.01755.x;
RA Lv H.X., Guo G.Q., Yang Z.N.;
RT "Translocons on the inner and outer envelopes of chloroplasts share similar
RT evolutionary origin in Arabidopsis thaliana.";
RL J. Evol. Biol. 22:1418-1428(2009).
RN [7]
RP FUNCTION, IDENTIFICATION IN TRANSLOCON COMPLEX, AND DISRUPTION PHENOTYPE.
RX PubMed=19531596; DOI=10.1105/tpc.108.063552;
RA Kikuchi S., Oishi M., Hirabayashi Y., Lee D.W., Hwang I., Nakai M.;
RT "A 1-megadalton translocation complex containing Tic20 and Tic21 mediates
RT chloroplast protein import at the inner envelope membrane.";
RL Plant Cell 21:1781-1797(2009).
RN [8]
RP FUNCTION.
RX PubMed=21343424; DOI=10.1104/pp.110.170233;
RA Duy D., Stuebe R., Wanner G., Philippar K.;
RT "The chloroplast permease PIC1 regulates plant growth and development by
RT directing homeostasis and transport of iron.";
RL Plant Physiol. 155:1709-1722(2011).
CC -!- FUNCTION: Involved in chloroplast protein import across the inner
CC envelope membrane. Acts also as a chloroplast permease regulating the
CC iron transport and homeostasis. Involved in the uptake and
CC sequestration of iron in plastids. {ECO:0000269|PubMed:17337631,
CC ECO:0000269|PubMed:19460081, ECO:0000269|PubMed:19531596,
CC ECO:0000269|PubMed:21343424}.
CC -!- SUBUNIT: Homomultimer. Part of the translocon complex.
CC {ECO:0000269|PubMed:16891400, ECO:0000269|PubMed:19531596}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast inner membrane
CC {ECO:0000305}; Multi-pass membrane protein {ECO:0000305}.
CC -!- TISSUE SPECIFICITY: Ubiquitous. Highest expression in green tissues and
CC very low levels in mature pollen. {ECO:0000269|PubMed:17337631}.
CC -!- DISRUPTION PHENOTYPE: Seedling lethal when grown on soil. Albino or
CC chlorotic dwarfed plants that accumulate unprocessed precursor proteins
CC and chloroplast ferritin clusters when grown in vitro.
CC {ECO:0000269|PubMed:16891400, ECO:0000269|PubMed:17337631,
CC ECO:0000269|PubMed:19460081, ECO:0000269|PubMed:19531596}.
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DR EMBL; AC007267; AAD26904.1; -; Genomic_DNA.
DR EMBL; CP002685; AEC06383.1; -; Genomic_DNA.
DR EMBL; AY057510; AAL09751.1; -; mRNA.
DR EMBL; AY065215; AAL38691.1; -; mRNA.
DR EMBL; AY122931; AAM67464.1; -; mRNA.
DR PIR; B84527; B84527.
DR RefSeq; NP_565372.1; NM_127089.4.
DR AlphaFoldDB; Q9SHU7; -.
DR STRING; 3702.Q9SHU7; -.
DR TCDB; 3.A.9.1.2; the chloroplast envelope protein translocase (cept or tic-toc) family.
DR PaxDb; 3702-AT2G15290-1; -.
DR ProteomicsDB; 246465; -.
DR EnsemblPlants; AT2G15290.1; AT2G15290.1; AT2G15290.
DR GeneID; 816018; -.
DR Gramene; AT2G15290.1; AT2G15290.1; AT2G15290.
DR KEGG; ath:AT2G15290; -.
DR Araport; AT2G15290; -.
DR TAIR; AT2G15290; TIC21.
DR eggNOG; ENOG502QTAI; Eukaryota.
DR HOGENOM; CLU_083138_0_0_1; -.
DR InParanoid; Q9SHU7; -.
DR OMA; GIFWAVC; -.
DR OrthoDB; 295524at2759; -.
DR PhylomeDB; Q9SHU7; -.
DR PRO; PR:Q9SHU7; -.
DR Proteomes; UP000006548; Chromosome 2.
DR ExpressionAtlas; Q9SHU7; baseline and differential.
DR Genevisible; Q9SHU7; AT.
DR GO; GO:0009507; C:chloroplast; HDA:TAIR.
DR GO; GO:0009941; C:chloroplast envelope; IDA:TAIR.
DR GO; GO:0009706; C:chloroplast inner membrane; IDA:TAIR.
DR GO; GO:0005739; C:mitochondrion; HDA:TAIR.
DR GO; GO:0005375; F:copper ion transmembrane transporter activity; IGI:TAIR.
DR GO; GO:0005381; F:iron ion transmembrane transporter activity; IGI:TAIR.
DR GO; GO:0042803; F:protein homodimerization activity; IPI:TAIR.
DR GO; GO:0045037; P:protein import into chloroplast stroma; IMP:TAIR.
DR InterPro; IPR022051; DUF3611.
DR PANTHER; PTHR34548; PROTEIN TIC 21, CHLOROPLASTIC; 1.
DR PANTHER; PTHR34548:SF2; PROTEIN TIC 21, CHLOROPLASTIC; 1.
DR Pfam; PF12263; DUF3611; 1.
PE 1: Evidence at protein level;
KW Chloroplast; Direct protein sequencing; Membrane; Plastid;
KW Plastid inner membrane; Protein transport; Reference proteome;
KW Transit peptide; Transmembrane; Transmembrane helix; Transport.
FT TRANSIT 1..90
FT /note="Chloroplast"
FT /evidence="ECO:0000269|PubMed:16891400"
FT CHAIN 91..296
FT /note="Protein TIC 21, chloroplastic"
FT /id="PRO_0000413207"
FT TRANSMEM 125..145
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 156..176
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 208..228
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 250..270
FT /note="Helical"
FT /evidence="ECO:0000255"
FT MUTAGEN 112
FT /note="K->C: Strongly reduced protein translocation across
FT the inner envelope membrane."
FT /evidence="ECO:0000269|PubMed:16891400"
FT MUTAGEN 205
FT /note="G->E: In cia5-1; albino plants."
FT /evidence="ECO:0000269|PubMed:16891400"
SQ SEQUENCE 296 AA; 31276 MW; 7178861D5061E024 CRC64;
MQSLLLPPAS SSGVSAVALR PGFQHSFNHQ SLSTRSLPLF NPLLLAPKKK TTISSYQSPP
SLSVYGFQIG GSKPSFTPST VAFSYPTSPS SVPGDNEVDK AKLAQVAKRL EKTSRYFKRL
GSIGFWGQLV STVVAAVILS FSIVVTGKPT SPATFYATAS GIAAAFVSVF WSFGYIRLSE
RLRRTSIDPA KAPPRADVVK GLRSGIMVNI LGMGSALLGM QATVGFLVAK ALTTSANPFY
QGVSQGYSPV LALDVFLVQA SANTLLSHFL GLVCSLELLR SVTVPNSESV VVPKVA
//
