ID   MLTF_HAEIE              Reviewed;         482 AA.
AC   A5UAQ3;
DT   25-NOV-2008, integrated into UniProtKB/Swiss-Prot.
DT   10-JUL-2007, sequence version 1.
DT   25-MAY-2022, entry version 79.
DE   RecName: Full=Membrane-bound lytic murein transglycosylase F {ECO:0000255|HAMAP-Rule:MF_02016};
DE            EC=4.2.2.n1 {ECO:0000255|HAMAP-Rule:MF_02016};
DE   AltName: Full=Murein lyase F {ECO:0000255|HAMAP-Rule:MF_02016};
DE   Flags: Precursor;
GN   Name=mltF {ECO:0000255|HAMAP-Rule:MF_02016};
GN   OrderedLocusNames=CGSHiEE_01915;
OS   Haemophilus influenzae (strain PittEE).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Haemophilus.
OX   NCBI_TaxID=374930;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PittEE;
RX   PubMed=17550610; DOI=10.1186/gb-2007-8-6-r103;
RA   Hogg J.S., Hu F.Z., Janto B., Boissy R., Hayes J., Keefe R., Post J.C.,
RA   Ehrlich G.D.;
RT   "Characterization and modeling of the Haemophilus influenzae core and
RT   supragenomes based on the complete genomic sequences of Rd and 12 clinical
RT   nontypeable strains.";
RL   Genome Biol. 8:R103.1-R103.18(2007).
CC   -!- FUNCTION: Murein-degrading enzyme that degrades murein glycan strands
CC       and insoluble, high-molecular weight murein sacculi, with the
CC       concomitant formation of a 1,6-anhydromuramoyl product. Lytic
CC       transglycosylases (LTs) play an integral role in the metabolism of the
CC       peptidoglycan (PG) sacculus. Their lytic action creates space within
CC       the PG sacculus to allow for its expansion as well as for the insertion
CC       of various structures such as secretion systems and flagella.
CC       {ECO:0000255|HAMAP-Rule:MF_02016}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Exolytic cleavage of the (1->4)-beta-glycosidic linkage
CC         between N-acetylmuramic acid (MurNAc) and N-acetylglucosamine
CC         (GlcNAc) residues in peptidoglycan, from either the reducing or the
CC         non-reducing ends of the peptidoglycan chains, with concomitant
CC         formation of a 1,6-anhydrobond in the MurNAc residue.; EC=4.2.2.n1;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_02016};
CC   -!- SUBCELLULAR LOCATION: Cell outer membrane; Peripheral membrane protein.
CC       Note=Attached to the inner leaflet of the outer membrane.
CC       {ECO:0000255|HAMAP-Rule:MF_02016}.
CC   -!- DOMAIN: The N-terminal domain does not have lytic activity and probably
CC       modulates enzymatic activity. The C-terminal domain is the catalytic
CC       active domain. {ECO:0000255|HAMAP-Rule:MF_02016}.
CC   -!- SIMILARITY: In the N-terminal section; belongs to the bacterial solute-
CC       binding protein 3 family. {ECO:0000255|HAMAP-Rule:MF_02016}.
CC   -!- SIMILARITY: In the C-terminal section; belongs to the transglycosylase
CC       Slt family. {ECO:0000255|HAMAP-Rule:MF_02016}.
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DR   EMBL; CP000671; ABQ97854.1; -; Genomic_DNA.
DR   RefSeq; WP_005686656.1; NC_009566.1.
DR   AlphaFoldDB; A5UAQ3; -.
DR   SMR; A5UAQ3; -.
DR   CAZy; GH23; Glycoside Hydrolase Family 23.
DR   KEGG; hip:CGSHiEE_01915; -.
DR   HOGENOM; CLU_027494_0_1_6; -.
DR   OMA; YYDILTW; -.
DR   GO; GO:0009279; C:cell outer membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016837; F:carbon-oxygen lyase activity, acting on polysaccharides; IEA:InterPro.
DR   GO; GO:0008933; F:lytic transglycosylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0016998; P:cell wall macromolecule catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0071555; P:cell wall organization; IEA:UniProtKB-KW.
DR   GO; GO:0000270; P:peptidoglycan metabolic process; IEA:InterPro.
DR   HAMAP; MF_02016; MltF; 1.
DR   InterPro; IPR023346; Lysozyme-like_dom_sf.
DR   InterPro; IPR023703; MltF.
DR   InterPro; IPR001638; Solute-binding_3/MltF_N.
DR   InterPro; IPR000189; Transglyc_AS.
DR   InterPro; IPR008258; Transglycosylase_SLT_dom_1.
DR   Pfam; PF00497; SBP_bac_3; 1.
DR   Pfam; PF01464; SLT; 1.
DR   SMART; SM00062; PBPb; 1.
DR   SUPFAM; SSF53955; SSF53955; 1.
DR   PROSITE; PS00922; TRANSGLYCOSYLASE; 1.
PE   3: Inferred from homology;
KW   Cell outer membrane; Cell wall biogenesis/degradation; Lyase; Membrane;
KW   Signal.
FT   SIGNAL          1..13
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02016"
FT   CHAIN           14..482
FT                   /note="Membrane-bound lytic murein transglycosylase F"
FT                   /id="PRO_0000353941"
FT   REGION          14..267
FT                   /note="Non-LT domain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02016"
FT   REGION          268..482
FT                   /note="LT domain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02016"
FT   ACT_SITE        312
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02016"
SQ   SEQUENCE   482 AA;  56014 MW;  AAFE79DA4FA66F42 CRC64;
     MKGLFLRIIT ALALLFWAID MVFPWQFLRH TEENHYAAIQ SRGALYVGTI NNQISYFTNN
     DGERGFEYEL AKAFADSLGV ELEMKTFDNQ EQLFDELDKH NIDLAAAHIL YHPKNAERFQ
     IGPAYHSASW QLAYRKNENR PKNLGNVKKD IYISNNLALE ETLKELQKQY PQLTWKRNQT
     LTQEELLLQL AEGKIPYVIA NSIDIAAMQQ IKPELAIAFD ITDEANVHWY LPNKSYHDLQ
     TALLNFMNNA EETGLLDNLK EKYLGHISQF DYVDTRSYMN AIENTLPQYS PLFEKYQGEL
     DWRLLAAVAY QESHWDPHAT SPTGVRGIMM LTKNTAQHMK ISDRTNPEQS IKAGSEYLHW
     LISQLPESIE KEEKIWFALV AYNIGLGHLI DARRLTQNLG GNPDNWLDVK KNLPLLAEKR
     YYSQLKYGYA RGYEAYQYVE NIRRYMNSIV NYHRVQENQI INDNASNESA VKNLEEIKEN
     KD