ID   LPT_SERMA               Reviewed;          22 AA.
AC   Q04208;
DT   01-FEB-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1995, sequence version 1.
DT   25-MAY-2022, entry version 50.
DE   RecName: Full=thr operon leader peptide {ECO:0000255|HAMAP-Rule:MF_01907};
DE   AltName: Full=thr operon attenuator {ECO:0000255|HAMAP-Rule:MF_01907};
GN   Name=thrL {ECO:0000255|HAMAP-Rule:MF_01907};
OS   Serratia marcescens.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Serratia.
OX   NCBI_TaxID=615;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=Sr41;
RX   PubMed=8423151; DOI=10.1128/jb.175.3.785-794.1993;
RA   Omori K., Suzuki S., Komatsubara S.;
RT   "Nucleotide sequence of the Serratia marcescens threonine operon and
RT   analysis of the threonine operon mutations which alter feedback inhibition
RT   of both aspartokinase I and homoserine dehydrogenase I.";
RL   J. Bacteriol. 175:785-794(1993).
CC   -!- FUNCTION: This protein is involved in control of the biosynthesis of
CC       threonine.
CC   -!- SIMILARITY: Belongs to the thr operon leader peptide family.
CC       {ECO:0000255|HAMAP-Rule:MF_01907}.
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DR   EMBL; D10385; BAA38473.1; -; Genomic_DNA.
DR   EMBL; D10386; BAA38476.1; -; Genomic_DNA.
DR   EMBL; D10387; BAA38479.1; -; Genomic_DNA.
DR   EMBL; X60821; CAA43211.1; -; Genomic_DNA.
DR   PIR; A47057; A47057.
DR   AlphaFoldDB; Q04208; -.
DR   STRING; 273526.SMDB11_0001A; -.
DR   GO; GO:0009088; P:threonine biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0031556; P:transcriptional attenuation by ribosome; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01907; Leader_Thr; 1.
DR   InterPro; IPR011720; Thr_lead_pept.
DR   Pfam; PF08254; Leader_Thr; 1.
DR   TIGRFAMs; TIGR02077; thr_lead_pep; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Leader peptide; Threonine biosynthesis.
FT   PEPTIDE         1..22
FT                   /note="thr operon leader peptide"
FT                   /id="PRO_0000044009"
FT   REGION          1..22
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   22 AA;  2239 MW;  E5FAA31A7B0FA4DE CRC64;
     MRNISLTTTI ITTTDTTGNG AG