ID   SC61B_CHLRE             Reviewed;          89 AA.
AC   A8I6P9;
DT   20-DEC-2017, integrated into UniProtKB/Swiss-Prot.
DT   04-DEC-2007, sequence version 1.
DT   25-MAY-2022, entry version 51.
DE   RecName: Full=Protein transport protein Sec61 subunit beta {ECO:0000305};
GN   Name=SEC61B {ECO:0000305};
GN   ORFNames=CHLREDRAFT_1670 {ECO:0000312|EMBL:EDP07266.1};
OS   Chlamydomonas reinhardtii (Chlamydomonas smithii).
OC   Eukaryota; Viridiplantae; Chlorophyta; core chlorophytes; Chlorophyceae;
OC   CS clade; Chlamydomonadales; Chlamydomonadaceae; Chlamydomonas.
OX   NCBI_TaxID=3055;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CC-503;
RX   PubMed=17932292; DOI=10.1126/science.1143609;
RA   Merchant S.S., Prochnik S.E., Vallon O., Harris E.H., Karpowicz S.J.,
RA   Witman G.B., Terry A., Salamov A., Fritz-Laylin L.K., Marechal-Drouard L.,
RA   Marshall W.F., Qu L.H., Nelson D.R., Sanderfoot A.A., Spalding M.H.,
RA   Kapitonov V.V., Ren Q., Ferris P., Lindquist E., Shapiro H., Lucas S.M.,
RA   Grimwood J., Schmutz J., Cardol P., Cerutti H., Chanfreau G., Chen C.L.,
RA   Cognat V., Croft M.T., Dent R., Dutcher S., Fernandez E., Fukuzawa H.,
RA   Gonzalez-Ballester D., Gonzalez-Halphen D., Hallmann A., Hanikenne M.,
RA   Hippler M., Inwood W., Jabbari K., Kalanon M., Kuras R., Lefebvre P.A.,
RA   Lemaire S.D., Lobanov A.V., Lohr M., Manuell A., Meier I., Mets L.,
RA   Mittag M., Mittelmeier T., Moroney J.V., Moseley J., Napoli C.,
RA   Nedelcu A.M., Niyogi K., Novoselov S.V., Paulsen I.T., Pazour G.J.,
RA   Purton S., Ral J.P., Riano-Pachon D.M., Riekhof W., Rymarquis L.,
RA   Schroda M., Stern D., Umen J., Willows R., Wilson N., Zimmer S.L.,
RA   Allmer J., Balk J., Bisova K., Chen C.J., Elias M., Gendler K., Hauser C.,
RA   Lamb M.R., Ledford H., Long J.C., Minagawa J., Page M.D., Pan J.,
RA   Pootakham W., Roje S., Rose A., Stahlberg E., Terauchi A.M., Yang P.,
RA   Ball S., Bowler C., Dieckmann C.L., Gladyshev V.N., Green P., Jorgensen R.,
RA   Mayfield S., Mueller-Roeber B., Rajamani S., Sayre R.T., Brokstein P.,
RA   Dubchak I., Goodstein D., Hornick L., Huang Y.W., Jhaveri J., Luo Y.,
RA   Martinez D., Ngau W.C., Otillar B., Poliakov A., Porter A., Szajkowski L.,
RA   Werner G., Zhou K., Grigoriev I.V., Rokhsar D.S., Grossman A.R.;
RT   "The Chlamydomonas genome reveals the evolution of key animal and plant
RT   functions.";
RL   Science 318:245-250(2007).
RN   [2]
RP   FUNCTION, AND INTERACTION WITH ARSA2.
RX   PubMed=28382961; DOI=10.1038/srep46022;
RA   Maestre-Reyna M., Wu S.M., Chang Y.C., Chen C.C., Maestre-Reyna A.,
RA   Wang A.H., Chang H.Y.;
RT   "In search of tail-anchored protein machinery in plants: reevaluating the
RT   role of arsenite transporters.";
RL   Sci. Rep. 7:46022-46022(2017).
CC   -!- FUNCTION: Necessary for protein translocation in the endoplasmic
CC       reticulum. {ECO:0000305|PubMed:28382961}.
CC   -!- SUBUNIT: Heterotrimeric complex composed of SEC61-alpha, SEC61-beta and
CC       SEC61-gamma (Probable). Interacts with ARSA2 (PubMed:28382961).
CC       {ECO:0000269|PubMed:28382961, ECO:0000305}.
CC   -!- SUBCELLULAR LOCATION: Endoplasmic reticulum membrane {ECO:0000305};
CC       Single-pass membrane protein {ECO:0000255}.
CC   -!- SIMILARITY: Belongs to the SEC61-beta family. {ECO:0000305}.
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DR   EMBL; DS496113; EDP07266.1; -; Genomic_DNA.
DR   RefSeq; XP_001701012.1; XM_001700960.1.
DR   AlphaFoldDB; A8I6P9; -.
DR   STRING; 3055.EDP07266; -.
DR   PaxDb; A8I6P9; -.
DR   EnsemblPlants; PNW80461; PNW80461; CHLRE_07g318450v5.
DR   GeneID; 5726375; -.
DR   Gramene; PNW80461; PNW80461; CHLRE_07g318450v5.
DR   KEGG; cre:CHLRE_07g318450v5; -.
DR   eggNOG; KOG3457; Eukaryota.
DR   HOGENOM; CLU_133423_3_1_1; -.
DR   InParanoid; A8I6P9; -.
DR   OrthoDB; 1634609at2759; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005784; C:Sec61 translocon complex; IEA:InterPro.
DR   GO; GO:0006886; P:intracellular protein transport; IEA:InterPro.
DR   GO; GO:0071816; P:tail-anchored membrane protein insertion into ER membrane; IDA:UniProtKB.
DR   InterPro; IPR030671; Sec61-beta/Sbh.
DR   InterPro; IPR016482; SecG/Sec61-beta/Sbh.
DR   PANTHER; PTHR13509; PTHR13509; 1.
DR   Pfam; PF03911; Sec61_beta; 1.
PE   1: Evidence at protein level;
KW   Endoplasmic reticulum; Membrane; Protein transport; Translocation;
KW   Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..89
FT                   /note="Protein transport protein Sec61 subunit beta"
FT                   /id="PRO_0000442533"
FT   TOPO_DOM        1..65
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        66..86
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   REGION          1..46
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        1..25
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   89 AA;  9188 MW;  9F6018F6AB110CA5 CRC64;
     MAGSQSQAST LVARGGRSSS NAPTGAAGAL RRRPVRGSGG SGTTKAQQAA MNFYTDDTPG
     WKMSPVVVIT MSLSFIAFVT ILHVVGKFQ