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RPSD_MYCTO
ID   RPSD_MYCTO              Reviewed;         212 AA.
AC   P9WGG8; L0TFB3; P66811; Q50712;
DT   16-APR-2014, integrated into UniProtKB/Swiss-Prot.
DT   16-APR-2014, sequence version 1.
DT   03-AUG-2022, entry version 43.
DE   RecName: Full=ECF RNA polymerase sigma factor SigD;
DE            Short=ECF sigma factor SigD;
DE   AltName: Full=Alternative RNA polymerase sigma factor SigD;
DE   AltName: Full=RNA polymerase sigma-D factor;
DE   AltName: Full=Sigma-D factor;
GN   Name=sigD; OrderedLocusNames=MT3523;
OS   Mycobacterium tuberculosis (strain CDC 1551 / Oshkosh).
OC   Bacteria; Actinobacteria; Corynebacteriales; Mycobacteriaceae;
OC   Mycobacterium; Mycobacterium tuberculosis complex.
OX   NCBI_TaxID=83331;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CDC 1551 / Oshkosh;
RX   PubMed=12218036; DOI=10.1128/jb.184.19.5479-5490.2002;
RA   Fleischmann R.D., Alland D., Eisen J.A., Carpenter L., White O.,
RA   Peterson J.D., DeBoy R.T., Dodson R.J., Gwinn M.L., Haft D.H., Hickey E.K.,
RA   Kolonay J.F., Nelson W.C., Umayam L.A., Ermolaeva M.D., Salzberg S.L.,
RA   Delcher A., Utterback T.R., Weidman J.F., Khouri H.M., Gill J., Mikula A.,
RA   Bishai W., Jacobs W.R. Jr., Venter J.C., Fraser C.M.;
RT   "Whole-genome comparison of Mycobacterium tuberculosis clinical and
RT   laboratory strains.";
RL   J. Bacteriol. 184:5479-5490(2002).
CC   -!- FUNCTION: Sigma factors are initiation factors that promote the
CC       attachment of RNA polymerase to specific initiation sites and are then
CC       released. Extracytoplasmic function (ECF) sigma factors are held in an
CC       inactive form by an anti-sigma factor until released by regulated
CC       intramembrane proteolysis (By similarity). {ECO:0000250}.
CC   -!- SUBUNIT: Interacts transiently with the RNA polymerase catalytic core
CC       formed by RpoA, RpoB, RpoC and RpoZ (2 alpha, 1 beta, 1 beta' and 1
CC       omega subunit) to form the RNA polymerase holoenzyme that can initiate
CC       transcription. {ECO:0000250}.
CC   -!- DOMAIN: The sigma-70 factor domain-2 mediates sequence-specific
CC       interaction with the -10 element in promoter DNA, and plays an
CC       important role in melting the double-stranded DNA and the formation of
CC       the transcription bubble. The sigma-70 factor domain-2 mediates
CC       interaction with the RNA polymerase subunits RpoB and RpoC (By
CC       similarity). {ECO:0000250}.
CC   -!- DOMAIN: The sigma-70 factor domain-4 contains a helix-turn-helix (H-T-
CC       H) motif that mediates interaction with the -35 element in promoter
CC       DNA. The domain also mediates interaction with the RNA polymerase
CC       subunit RpoA. Interactions between sigma-70 factor domain-4 and anti-
CC       sigma factors prevents interaction of sigma factors with the RNA
CC       polymerase catalytic core (By similarity). {ECO:0000250}.
CC   -!- MISCELLANEOUS: Extracytoplasmic function sigma factors (ECF) are held
CC       in an inactive form by an anti-sigma factor until released by regulated
CC       intramembrane proteolysis (RIP). RIP occurs when an extracytoplasmic
CC       signal triggers a concerted proteolytic cascade to transmit information
CC       and elicit cellular responses. The membrane-spanning anti-sigma factor
CC       is first cut extracytoplasmically (site-1 protease, S1P), then within
CC       the membrane itself (site-2 protease, S2P), while cytoplasmic proteases
CC       finish degrading the regulatory protein, liberating SigD (By
CC       similarity). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the sigma-70 factor family. ECF subfamily.
CC       {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAK47861.1; Type=Erroneous initiation; Note=Extended N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; AE000516; AAK47861.1; ALT_INIT; Genomic_DNA.
DR   PIR; C70737; C70737.
DR   RefSeq; WP_003418013.1; NZ_KK341227.1.
DR   AlphaFoldDB; P9WGG8; -.
DR   SMR; P9WGG8; -.
DR   EnsemblBacteria; AAK47861; AAK47861; MT3523.
DR   GeneID; 45427410; -.
DR   KEGG; mtc:MT3523; -.
DR   PATRIC; fig|83331.31.peg.3780; -.
DR   HOGENOM; CLU_047691_10_1_11; -.
DR   Proteomes; UP000001020; Chromosome.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0016987; F:sigma factor activity; IEA:UniProtKB-KW.
DR   GO; GO:0006352; P:DNA-templated transcription, initiation; IEA:InterPro.
DR   GO; GO:0009628; P:response to abiotic stimulus; IEA:UniProt.
DR   GO; GO:0006950; P:response to stress; IEA:UniProt.
DR   Gene3D; 1.10.10.10; -; 1.
DR   InterPro; IPR039425; RNA_pol_sigma-70-like.
DR   InterPro; IPR014284; RNA_pol_sigma-70_dom.
DR   InterPro; IPR000838; RNA_pol_sigma70_ECF_CS.
DR   InterPro; IPR007627; RNA_pol_sigma70_r2.
DR   InterPro; IPR013249; RNA_pol_sigma70_r4_t2.
DR   InterPro; IPR013325; RNA_pol_sigma_r2.
DR   InterPro; IPR013324; RNA_pol_sigma_r3/r4-like.
DR   InterPro; IPR036388; WH-like_DNA-bd_sf.
DR   PANTHER; PTHR43133; PTHR43133; 1.
DR   Pfam; PF04542; Sigma70_r2; 1.
DR   Pfam; PF08281; Sigma70_r4_2; 1.
DR   SUPFAM; SSF88659; SSF88659; 1.
DR   SUPFAM; SSF88946; SSF88946; 1.
DR   TIGRFAMs; TIGR02937; sigma70-ECF; 1.
DR   PROSITE; PS01063; SIGMA70_ECF; 1.
PE   3: Inferred from homology;
KW   DNA-binding; Sigma factor; Transcription; Transcription regulation;
KW   Virulence.
FT   CHAIN           1..212
FT                   /note="ECF RNA polymerase sigma factor SigD"
FT                   /id="PRO_0000428364"
FT   DNA_BIND        176..195
FT                   /note="H-T-H motif"
FT                   /evidence="ECO:0000250"
FT   REGION          49..119
FT                   /note="Sigma-70 factor domain-2"
FT   REGION          152..201
FT                   /note="Sigma-70 factor domain-4"
FT   MOTIF           75..78
FT                   /note="Polymerase core binding"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   212 AA;  22919 MW;  12A157F6F66BB0C3 CRC64;
     MVDPGVSPGC VRFVTLEISP SMTMQGERLD AVVAEAVAGD RNALREVLET IRPIVVRYCR
     ARVGTVERSG LSADDVAQEV CLATITALPR YRDRGRPFLA FLYGIAAHKV ADAHRAAGRD
     RAYPAETLPE RWSADAGPEQ MAIEADSVTR MNELLEILPA KQREILILRV VVGLSAEETA
     AAVGSTTGAV RVAQHRALQR LKDEIVAAGD YA
 
 
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