ID   HCT2_CHLPN              Reviewed;         172 AA.
AC   Q9Z8F9; Q9JQ36;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   03-AUG-2022, entry version 103.
DE   RecName: Full=Histone H1-like protein HC2;
DE   AltName: Full=HC2 nucleoprotein;
GN   Name=hctB; OrderedLocusNames=CPn_0384, CP_0371, CpB0396;
OS   Chlamydia pneumoniae (Chlamydophila pneumoniae).
OC   Bacteria; Chlamydiae; Chlamydiales; Chlamydiaceae;
OC   Chlamydia/Chlamydophila group; Chlamydia.
OX   NCBI_TaxID=83558;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CWL029;
RX   PubMed=10192388; DOI=10.1038/7716;
RA   Kalman S., Mitchell W.P., Marathe R., Lammel C.J., Fan J., Hyman R.W.,
RA   Olinger L., Grimwood J., Davis R.W., Stephens R.S.;
RT   "Comparative genomes of Chlamydia pneumoniae and C. trachomatis.";
RL   Nat. Genet. 21:385-389(1999).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AR39;
RX   PubMed=10684935; DOI=10.1093/nar/28.6.1397;
RA   Read T.D., Brunham R.C., Shen C., Gill S.R., Heidelberg J.F., White O.,
RA   Hickey E.K., Peterson J.D., Utterback T.R., Berry K.J., Bass S.,
RA   Linher K.D., Weidman J.F., Khouri H.M., Craven B., Bowman C., Dodson R.J.,
RA   Gwinn M.L., Nelson W.C., DeBoy R.T., Kolonay J.F., McClarty G.,
RA   Salzberg S.L., Eisen J.A., Fraser C.M.;
RT   "Genome sequences of Chlamydia trachomatis MoPn and Chlamydia pneumoniae
RT   AR39.";
RL   Nucleic Acids Res. 28:1397-1406(2000).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=J138;
RX   PubMed=10871362; DOI=10.1093/nar/28.12.2311;
RA   Shirai M., Hirakawa H., Kimoto M., Tabuchi M., Kishi F., Ouchi K.,
RA   Shiba T., Ishii K., Hattori M., Kuhara S., Nakazawa T.;
RT   "Comparison of whole genome sequences of Chlamydia pneumoniae J138 from
RT   Japan and CWL029 from USA.";
RL   Nucleic Acids Res. 28:2311-2314(2000).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TW-183;
RA   Geng M.M., Schuhmacher A., Muehldorfer I., Bensch K.W., Schaefer K.P.,
RA   Schneider S., Pohl T., Essig A., Marre R., Melchers K.;
RT   "The genome sequence of Chlamydia pneumoniae TW183 and comparison with
RT   other Chlamydia strains based on whole genome sequence analysis.";
RL   Submitted (MAY-2002) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Might have a role in establishing the nucleoid structure of
CC       elementary bodies.
CC   -!- DEVELOPMENTAL STAGE: Specific to the EB (elementary body) form in the
CC       life cycle of chlamydiae.
CC   -!- SIMILARITY: Belongs to the histone H1/H5 family. HCT subfamily.
CC       {ECO:0000305}.
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DR   EMBL; AE001363; AAD18528.1; -; Genomic_DNA.
DR   EMBL; AE002161; AAF38220.1; -; Genomic_DNA.
DR   EMBL; BA000008; BAA98592.1; -; Genomic_DNA.
DR   EMBL; AE009440; AAP98327.1; -; Genomic_DNA.
DR   PIR; F72083; F72083.
DR   PIR; F86538; F86538.
DR   RefSeq; NP_224584.1; NC_000922.1.
DR   RefSeq; WP_010883027.1; NZ_LN847257.1.
DR   AlphaFoldDB; Q9Z8F9; -.
DR   STRING; 115711.CP_0371; -.
DR   EnsemblBacteria; AAD18528; AAD18528; CPn_0384.
DR   EnsemblBacteria; AAF38220; AAF38220; CP_0371.
DR   GeneID; 45050431; -.
DR   KEGG; cpa:CP_0371; -.
DR   KEGG; cpj:hctB; -.
DR   KEGG; cpn:CPn_0384; -.
DR   KEGG; cpt:CpB0396; -.
DR   PATRIC; fig|115713.3.peg.426; -.
DR   eggNOG; ENOG502ZCZQ; Bacteria.
DR   HOGENOM; CLU_101293_0_0_0; -.
DR   OrthoDB; 2064190at2; -.
DR   Proteomes; UP000000583; Chromosome.
DR   Proteomes; UP000000801; Chromosome.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0030527; F:structural constituent of chromatin; IEA:InterPro.
DR   GO; GO:0030261; P:chromosome condensation; IEA:InterPro.
DR   InterPro; IPR009970; HC2.
DR   Pfam; PF07382; HC2; 1.
PE   2: Evidence at transcript level;
KW   DNA-binding; Repeat.
FT   CHAIN           1..172
FT                   /note="Histone H1-like protein HC2"
FT                   /id="PRO_0000196021"
FT   REGION          1..77
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        12..77
FT                   /note="Basic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   172 AA;  18730 MW;  C420B8EC5340F943 CRC64;
     MIGAQKKQSG KKTASRAVRK PAKKVAAKRT VKKATVRKTA VKKPAVRKTA AKKTVAKKTT
     AKRTVRKTVA KKPAVKKVAA KRVVKKTVAK KTTAKRAVRK TVAKKPVARK TTVAKGSPKK
     AAACALACHK NHKHTSSCKR VCSSTATRKH GSKSRVRTAH GWRHQLIKMM SR