ID   SAS3_PRIMG              Reviewed;          65 AA.
AC   P10572;
DT   01-JUL-1989, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-1989, sequence version 1.
DT   25-MAY-2022, entry version 75.
DE   RecName: Full=Small, acid-soluble spore protein C3;
DE            Short=SASP;
GN   Name=SASP-C3;
OS   Priestia megaterium (Bacillus megaterium).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Priestia.
OX   NCBI_TaxID=1404;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=6439604; DOI=10.1016/0378-1119(84)90117-3;
RA   Fliss E.R., Setlow P.;
RT   "Bacillus megaterium spore protein C-3: nucleotide sequence of its gene and
RT   the amino acid sequence at its spore protease cleavage site.";
RL   Gene 30:167-172(1984).
CC   -!- FUNCTION: SASP are bound to spore DNA. They are double-stranded DNA-
CC       binding proteins that cause DNA to change to an a-like conformation.
CC       They protect the DNA backbone from chemical and enzymatic cleavage and
CC       are thus involved in dormant spore's high resistance to UV light.
CC   -!- MISCELLANEOUS: SASP are degraded in the first minutes of spore
CC       germination and provide amino acids for both new protein synthesis and
CC       metabolism.
CC   -!- SIMILARITY: Belongs to the alpha/beta-type SASP family. {ECO:0000305}.
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DR   EMBL; M12336; AAA22782.1; -; Genomic_DNA.
DR   PIR; A22810; A22810.
DR   RefSeq; WP_013055933.1; NZ_WIPB01000018.1.
DR   AlphaFoldDB; P10572; -.
DR   SMR; P10572; -.
DR   GeneID; 48011853; -.
DR   GeneID; 64144798; -.
DR   OMA; WTVANEM; -.
DR   GO; GO:0003690; F:double-stranded DNA binding; IEA:InterPro.
DR   GO; GO:0006265; P:DNA topological change; IEA:InterPro.
DR   GO; GO:0030435; P:sporulation resulting in formation of a cellular spore; IEA:UniProtKB-KW.
DR   Gene3D; 6.10.10.80; -; 1.
DR   InterPro; IPR001448; SASP_alpha/beta-type.
DR   InterPro; IPR018126; SASP_alpha/beta-type_CS.
DR   InterPro; IPR038300; SASP_sf_alpha/beta.
DR   Pfam; PF00269; SASP; 1.
DR   PROSITE; PS00304; SASP_1; 1.
DR   PROSITE; PS00684; SASP_2; 1.
PE   3: Inferred from homology;
KW   DNA-binding; Sporulation.
FT   CHAIN           1..65
FT                   /note="Small, acid-soluble spore protein C3"
FT                   /id="PRO_0000196296"
FT   SITE            22..23
FT                   /note="Cleavage; by spore protease"
SQ   SEQUENCE   65 AA;  7027 MW;  98387ED2C3C12894 CRC64;
     MARTNKLLTP GVEQFLDQYK YEIAQEFGVT LGSDTAARSN GSVGGEITKR LVQQAQAHLS
     GSTQK