ID   CSS4B_HYDCU             Reviewed;          84 AA.
AC   Q31HD4;
DT   10-FEB-2021, integrated into UniProtKB/Swiss-Prot.
DT   06-DEC-2005, sequence version 1.
DT   25-MAY-2022, entry version 77.
DE   RecName: Full=Carboxysome shell vertex protein CsoS4B {ECO:0000303|PubMed:28115547};
GN   Name=csoS4B {ECO:0000303|PubMed:28115547}; OrderedLocusNames=Tcr_0843;
OS   Hydrogenovibrio crunogenus (strain DSM 25203 / XCL-2) (Thiomicrospira
OS   crunogena).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Thiotrichales;
OC   Piscirickettsiaceae; Hydrogenovibrio.
OX   NCBI_TaxID=317025;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 25203 / XCL-2;
RX   PubMed=17105352; DOI=10.1371/journal.pbio.0040383;
RA   Scott K.M., Sievert S.M., Abril F.N., Ball L.A., Barrett C.J., Blake R.A.,
RA   Boller A.J., Chain P.S.G., Clark J.A., Davis C.R., Detter C., Do K.F.,
RA   Dobrinski K.P., Faza B.I., Fitzpatrick K.A., Freyermuth S.K., Harmer T.L.,
RA   Hauser L.J., Huegler M., Kerfeld C.A., Klotz M.G., Kong W.W., Land M.,
RA   Lapidus A., Larimer F.W., Longo D.L., Lucas S., Malfatti S.A., Massey S.E.,
RA   Martin D.D., McCuddin Z., Meyer F., Moore J.L., Ocampo L.H. Jr., Paul J.H.,
RA   Paulsen I.T., Reep D.K., Ren Q., Ross R.L., Sato P.Y., Thomas P.,
RA   Tinkham L.E., Zeruth G.T.;
RT   "The genome of deep-sea vent chemolithoautotroph Thiomicrospira crunogena
RT   XCL-2.";
RL   PLoS Biol. 4:1-17(2006).
RN   [2]
RP   SUBCELLULAR LOCATION.
RC   STRAIN=DSM 25203 / XCL-2;
RX   PubMed=28115547; DOI=10.1128/jb.00871-16;
RG   USF MCB4404L;
RA   Mangiapia M., Brown T.W., Chaput D., Haller E., Harmer T.L., Hashemy Z.,
RA   Keeley R., Leonard J., Mancera P., Nicholson D., Stevens S., Wanjugi P.,
RA   Zabinski T., Pan C., Scott K.M.;
RT   "Proteomic and Mutant Analysis of the CO2 Concentrating Mechanism of
RT   Hydrothermal Vent Chemolithoautotroph Thiomicrospira crunogena.";
RL   J. Bacteriol. 199:0-0(2017).
CC   -!- FUNCTION: Probably forms vertices in the carboxysome, a polyhedral
CC       inclusion where RuBisCO (ribulose bisphosphate carboxylase, cbbL-cbbS)
CC       is sequestered. Has been modeled to induce curvature upon insertion
CC       into an otherwise flat hexagonal layer of major carboxysome subunits.
CC       {ECO:0000250|UniProtKB:O85043}.
CC   -!- SUBUNIT: Homopentamer. {ECO:0000250|UniProtKB:O85043}.
CC   -!- SUBCELLULAR LOCATION: Carboxysome {ECO:0000305|PubMed:28115547}.
CC       Note=This bacterium makes alpha-type carboxysomes. {ECO:0000305}.
CC   -!- DOMAIN: The tight homopentamer forms a pore with an opening of about
CC       3.5 Angstroms in diameter which is positively charged.
CC       {ECO:0000250|UniProtKB:O85043}.
CC   -!- SIMILARITY: Belongs to the CcmL/EutN family. CsoS4 subfamily.
CC       {ECO:0000305}.
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DR   EMBL; CP000109; ABB41439.1; -; Genomic_DNA.
DR   RefSeq; WP_011370266.1; NC_007520.2.
DR   AlphaFoldDB; Q31HD4; -.
DR   SMR; Q31HD4; -.
DR   STRING; 317025.Tcr_0843; -.
DR   EnsemblBacteria; ABB41439; ABB41439; Tcr_0843.
DR   KEGG; tcx:Tcr_0843; -.
DR   eggNOG; COG4576; Bacteria.
DR   HOGENOM; CLU_148498_1_0_6; -.
DR   OMA; RHACPDN; -.
DR   OrthoDB; 1832681at2; -.
DR   GO; GO:0031470; C:carboxysome; IEA:UniProtKB-SubCell.
DR   GO; GO:0015977; P:carbon fixation; IEA:UniProtKB-KW.
DR   Gene3D; 2.40.50.220; -; 1.
DR   InterPro; IPR014077; CsoS4B.
DR   InterPro; IPR004992; EutN_CcmL.
DR   InterPro; IPR036677; EutN_CcmL_sf.
DR   Pfam; PF03319; EutN_CcmL; 1.
DR   SUPFAM; SSF159133; SSF159133; 1.
DR   TIGRFAMs; TIGR02704; carboxysome_B; 1.
DR   PROSITE; PS51932; BMV; 1.
PE   3: Inferred from homology;
KW   Bacterial microcompartment; Carbon dioxide fixation; Carboxysome.
FT   CHAIN           1..84
FT                   /note="Carboxysome shell vertex protein CsoS4B"
FT                   /id="PRO_0000452083"
FT   DOMAIN          1..77
FT                   /note="BMV"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01280"
SQ   SEQUENCE   84 AA;  9176 MW;  1052F2D63807E7B6 CRC64;
     MQILQVKKQL VLTSRLKDLG HLPLKALSSE TGEIFVAMDP VGTKDGDWVF TIANSAARDA
     AGDKRLLTDL TVGGIIDDWQ PKQK