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CHPF_STRCO
ID   CHPF_STRCO              Reviewed;          88 AA.
AC   Q9KYG7;
DT   10-OCT-2018, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   25-MAY-2022, entry version 70.
DE   RecName: Full=Chaplin-F {ECO:0000303|PubMed:12832396};
DE   AltName: Full=Chaplin-G {ECO:0000303|PubMed:12832397};
DE   Flags: Precursor;
GN   Name=chpF {ECO:0000303|PubMed:12832396};
GN   Synonyms=chpG {ECO:0000303|PubMed:12832397}; OrderedLocusNames=SCO2705;
OS   Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145).
OC   Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae;
OC   Streptomyces; Streptomyces albidoflavus group.
OX   NCBI_TaxID=100226;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-471 / A3(2) / M145;
RX   PubMed=12000953; DOI=10.1038/417141a;
RA   Bentley S.D., Chater K.F., Cerdeno-Tarraga A.-M., Challis G.L.,
RA   Thomson N.R., James K.D., Harris D.E., Quail M.A., Kieser H., Harper D.,
RA   Bateman A., Brown S., Chandra G., Chen C.W., Collins M., Cronin A.,
RA   Fraser A., Goble A., Hidalgo J., Hornsby T., Howarth S., Huang C.-H.,
RA   Kieser T., Larke L., Murphy L.D., Oliver K., O'Neil S., Rabbinowitsch E.,
RA   Rajandream M.A., Rutherford K.M., Rutter S., Seeger K., Saunders D.,
RA   Sharp S., Squares R., Squares S., Taylor K., Warren T., Wietzorrek A.,
RA   Woodward J.R., Barrell B.G., Parkhill J., Hopwood D.A.;
RT   "Complete genome sequence of the model actinomycete Streptomyces coelicolor
RT   A3(2).";
RL   Nature 417:141-147(2002).
RN   [2]
RP   FUNCTION, AMYLOID FORMATION, SUBCELLULAR LOCATION, DEVELOPMENTAL STAGE,
RP   INDUCTION, AND MASS SPECTROMETRY.
RC   STRAIN=ATCC BAA-471 / A3(2) / M145;
RX   PubMed=12832396; DOI=10.1101/gad.264303;
RA   Claessen D., Rink R., de Jong W., Siebring J., de Vreugd P., Boersma F.G.,
RA   Dijkhuizen L., Wosten H.A.;
RT   "A novel class of secreted hydrophobic proteins is involved in aerial
RT   hyphae formation in Streptomyces coelicolor by forming amyloid-like
RT   fibrils.";
RL   Genes Dev. 17:1714-1726(2003).
RN   [3]
RP   FUNCTION, SUBCELLULAR LOCATION, INDUCTION, AND MASS SPECTROMETRY.
RC   STRAIN=A3(2) / M600;
RX   PubMed=12832397; DOI=10.1101/gad.264403;
RA   Elliot M.A., Karoonuthaisiri N., Huang J., Bibb M.J., Cohen S.N., Kao C.M.,
RA   Buttner M.J.;
RT   "The chaplins: a family of hydrophobic cell-surface proteins involved in
RT   aerial mycelium formation in Streptomyces coelicolor.";
RL   Genes Dev. 17:1727-1740(2003).
RN   [4]
RP   FUNCTION, AND DISRUPTION PHENOTYPE.
RC   STRAIN=ATCC BAA-471 / A3(2) / M145;
RX   PubMed=15228525; DOI=10.1111/j.1365-2958.2004.04143.x;
RA   Claessen D., Stokroos I., Deelstra H.J., Penninga N.A., Bormann C.,
RA   Salas J.A., Dijkhuizen L., Woesten H.A.;
RT   "The formation of the rodlet layer of streptomycetes is the result of the
RT   interplay between rodlins and chaplins.";
RL   Mol. Microbiol. 53:433-443(2004).
RN   [5]
RP   FUNCTION, SUBCELLULAR LOCATION, DEVELOPMENTAL STAGE, INDUCTION, AND
RP   DISRUPTION PHENOTYPE.
RC   STRAIN=A3(2) / M600;
RX   PubMed=17462011; DOI=10.1111/j.1365-2958.2007.05674.x;
RA   Capstick D.S., Willey J.M., Buttner M.J., Elliot M.A.;
RT   "SapB and the chaplins: connections between morphogenetic proteins in
RT   Streptomyces coelicolor.";
RL   Mol. Microbiol. 64:602-613(2007).
RN   [6]
RP   FUNCTION IN GROWTH SUBSTRATE ATTACHMENT, SUBCELLULAR LOCATION, AND
RP   DISRUPTION PHENOTYPE.
RC   STRAIN=ATCC BAA-471 / A3(2) / M145;
RX   PubMed=19682261; DOI=10.1111/j.1365-2958.2009.06838.x;
RA   de Jong W., Woesten H.A., Dijkhuizen L., Claessen D.;
RT   "Attachment of Streptomyces coelicolor is mediated by amyloidal fimbriae
RT   that are anchored to the cell surface via cellulose.";
RL   Mol. Microbiol. 73:1128-1140(2009).
RN   [7]
RP   FUNCTION, AMYLOID FORMATION, SUBUNIT, SUBCELLULAR LOCATION, AND DISULFIDE
RP   BOND.
RX   PubMed=21526199; DOI=10.1371/journal.pone.0018839;
RA   Sawyer E.B., Claessen D., Haas M., Hurgobin B., Gras S.L.;
RT   "The assembly of individual chaplin peptides from Streptomyces coelicolor
RT   into functional amyloid fibrils.";
RL   PLoS ONE 6:E18839-E18839(2011).
RN   [8]
RP   FUNCTION, AND AMYLOID FORMATION.
RX   PubMed=24012833; DOI=10.1016/j.jsb.2013.08.013;
RA   Bokhove M., Claessen D., de Jong W., Dijkhuizen L., Boekema E.J.,
RA   Oostergetel G.T.;
RT   "Chaplins of Streptomyces coelicolor self-assemble into two distinct
RT   functional amyloids.";
RL   J. Struct. Biol. 184:301-309(2013).
RN   [9]
RP   BIOTECHNOLOGY.
RC   STRAIN=ATCC BAA-471 / A3(2) / M145;
RX   PubMed=24413917; DOI=10.1007/s00253-013-5463-z;
RA   Ekkers D.M., Claessen D., Galli F., Stamhuis E.;
RT   "Surface modification using interfacial assembly of the Streptomyces
RT   chaplin proteins.";
RL   Appl. Microbiol. Biotechnol. 98:4491-4501(2014).
RN   [10]
RP   FUNCTION, AMYLOID FORMATION, AND DOMAIN.
RX   PubMed=28925983; DOI=10.3390/biom7030068;
RA   Dokouhaki M., Prime E.L., Hung A., Qiao G.G., Day L., Gras S.L.;
RT   "Structure-dependent interfacial properties of chaplin F from Streptomyces
RT   coelicolor.";
RL   Biomolecules 7:0-0(2017).
CC   -!- FUNCTION: One of 8 partially redundant surface-active proteins required
CC       for efficient formation of aerial mycelium; the short chaplins assemble
CC       into a hydrophobic, amyloidal fibrillar surface layer that envelopes
CC       and protects aerial hyphae and spores, presumably anchored to the long
CC       chaplins (PubMed:12832396, PubMed:12832397, PubMed:15228525,
CC       PubMed:17462011). Chaplins have an overlapping function with the
CC       surface-active SapB peptide; chaplins are essential on minimal medium
CC       while on rich medium both chaplins and SapB are required for efficient
CC       aerial hyphae formation (PubMed:17462011). Chaplins are also involved
CC       in cell attachment to a hydrophobic surface (PubMed:19682261). Forms
CC       amyloid fibrils in vitro probably composed of stacked beta-sheets, at
CC       low extracellular concentrations individually restores the ability to
CC       form aerial hyphae to a chaplin-deficient strain (PubMed:21526199). A
CC       small chaplin extract (ChpD, ChpE, ChpF, ChpG and ChpH) self-assembles
CC       into 2 different amyloids; small fibrils at the air-water interface
CC       form an amphipathic membrane that resembles spore-surface structures
CC       involved in aerial hyphae formation, and hydrophilic fibrils in
CC       solution that resemble the fibers that attach cells to a hydrophobic
CC       surface. At the air-water interface the hydrophilic surface is in
CC       contact with water (probably equivalent to the peptidoglycan layer),
CC       while the hydrophobic face is exposed to the air, making the surface of
CC       the aerial hyphae hydrophobic (PubMed:24012833). A small chaplin
CC       extract applied to a chaplin-deficient strain restores aerial hyphae
CC       formation (PubMed:12832396, PubMed:12832397). The small chaplin extract
CC       forms an amyloid-like structure similar to that seen on the surface of
CC       cells without rodlets (rdlA-rdlB deletions), and is highly surface
CC       active, reducing surface tension from 72 to 26 mJ/m(2), which probably
CC       allows escape of hyphae from an aqueous environment into air
CC       (PubMed:12832396). ChpF alone is less surface active at pH 3.0 than at
CC       pH 10.0, it reduces the surface tension of water from 72.8 mN/m to 50
CC       mN/m at pH 3.0 or to 37 mN/m at pH 10.0 (PubMed:28925983). ChpF and
CC       ChpG are sufficient to restore the rodlet layer and hydrophobicity to a
CC       strain deleted for the other 6 chaplin genes (PubMed:15228525).
CC       {ECO:0000269|PubMed:12832396, ECO:0000269|PubMed:12832397,
CC       ECO:0000269|PubMed:15228525, ECO:0000269|PubMed:17462011,
CC       ECO:0000269|PubMed:19682261, ECO:0000269|PubMed:21526199,
CC       ECO:0000269|PubMed:24012833, ECO:0000269|PubMed:28925983}.
CC   -!- SUBUNIT: Homodimer; disulfide linked. About 20% of ChpF isolated from
CC       cell wall forms disulfide-bonded homodimers.
CC       {ECO:0000269|PubMed:21526199}.
CC   -!- SUBCELLULAR LOCATION: Cell surface {ECO:0000269|PubMed:12832396,
CC       ECO:0000269|PubMed:12832397, ECO:0000305|PubMed:17462011}. Secreted,
CC       cell wall {ECO:0000269|PubMed:12832396, ECO:0000269|PubMed:12832397,
CC       ECO:0000269|PubMed:21526199}. Fimbrium {ECO:0000269|PubMed:19682261}.
CC       Note=Considerably more ChpF is seen in fimbrae than in aerial hyphae.
CC       {ECO:0000269|PubMed:19682261}.
CC   -!- DEVELOPMENTAL STAGE: Present in aerial hyphae of sporulating cultures
CC       (at protein level). {ECO:0000269|PubMed:12832396,
CC       ECO:0000305|PubMed:17462011}.
CC   -!- INDUCTION: Not expressed while still submerged, accumulates during
CC       aerial hyphae formation on minimal medium, no transcript detected
CC       during sporulation (PubMed:12832396). During aerial hyphae formation
CC       and early sporulation on rich medium, under control of ECF sigma factor
CC       BldN (PubMed:12832397). Expression depends on bldB but not bldA, bldD
CC       or bldH (at protein level) (PubMed:17462011).
CC       {ECO:0000269|PubMed:12832396, ECO:0000269|PubMed:12832397,
CC       ECO:0000269|PubMed:17462011}.
CC   -!- DOMAIN: The mature protein rapidly forms a predominantly amyloid fibril
CC       beta-sheet structure at pH 3.0 and 4.2, with less beta-sheet and more
CC       random coil at pH 10 (Probable) (PubMed:28925983). Reduced and non-
CC       reduced peptide have the same secondary structures at all pH tested,
CC       suggesting the disulfide bond is not required for fibril formation
CC       (PubMed:28925983). {ECO:0000269|PubMed:28925983,
CC       ECO:0000305|PubMed:21526199}.
CC   -!- MASS SPECTROMETRY: Mass=5182; Method=MALDI;
CC       Evidence={ECO:0000269|PubMed:12832396};
CC   -!- MASS SPECTROMETRY: Mass=5177.48; Method=MALDI;
CC       Evidence={ECO:0000269|PubMed:12832397};
CC   -!- DISRUPTION PHENOTYPE: A strain deleted of chpF and chpG makes rodlets
CC       (PubMed:15228525). Deletion of all 8 chaplin genes on minimal medium
CC       leads to severely disrupted aerial hyphae that collapse on the colony
CC       surface and are not hydrophobic. A few spore chains can still be made,
CC       but they have neither rodlets or amyloid-like fibers. rdlA and rdlB
CC       mRNA are down-regulated (PubMed:15228525, PubMed:17462011). Deletion of
CC       all 8 chaplin genes on rich medium leads to a reduced abundance of
CC       aerial hyphae without rodlets and occasional spore chains on surface
CC       hyphae. A complete chaplin-negative plus ram-negative strain (deletion
CC       of ramR or the ramC-ramS-ramA-ramB operon) leads to the complete loss
CC       of robust aerial hyphae (PubMed:17462011). Deletion of all 8 chaplin
CC       genes significantly reduces cellular attachment to a hydrophobic
CC       substrate; thin fibrils instead of fimbrae are detected. The long
CC       chaplins (ChpA, ChpB and ChpC, as seen by near wild-type attachment of
CC       the hextuple chpA-chpB-chpC-chpD-chpE-chpH knockout) are not essential
CC       but may contribute to attachment (PubMed:19682261).
CC       {ECO:0000269|PubMed:15228525, ECO:0000269|PubMed:17462011,
CC       ECO:0000269|PubMed:19682261}.
CC   -!- BIOTECHNOLOGY: The small chaplin mixture (a cell wall extract of an
CC       rdlA-rdlB knockout) forms a stable coat on a number of surfaces
CC       (including Teflon and cotton) and emulsifies oil-water mixtures, which
CC       could be useful in medical and technical applications.
CC       {ECO:0000269|PubMed:24413917}.
CC   -!- SIMILARITY: Belongs to the chaplin family. Short chaplin subfamily.
CC       {ECO:0000305|PubMed:12832397}.
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DR   EMBL; AL939113; CAB92271.1; -; Genomic_DNA.
DR   RefSeq; NP_626939.1; NC_003888.3.
DR   RefSeq; WP_003976095.1; NC_003888.3.
DR   AlphaFoldDB; Q9KYG7; -.
DR   STRING; 100226.SCO2705; -.
DR   DNASU; 1098139; -.
DR   GeneID; 1098139; -.
DR   KEGG; sco:SCO2705; -.
DR   PATRIC; fig|100226.15.peg.2760; -.
DR   eggNOG; ENOG50348JU; Bacteria.
DR   HOGENOM; CLU_145456_3_1_11; -.
DR   OMA; NTCINAD; -.
DR   Proteomes; UP000001973; Chromosome.
DR   GO; GO:0009986; C:cell surface; IEA:UniProtKB-SubCell.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-KW.
DR   GO; GO:0009289; C:pilus; IEA:UniProtKB-SubCell.
DR   GO; GO:0007155; P:cell adhesion; IEA:UniProtKB-KW.
DR   InterPro; IPR005528; ChpA-H.
DR   Pfam; PF03777; ChpA-C; 1.
DR   PROSITE; PS51884; CHAPLIN; 1.
PE   1: Evidence at protein level;
KW   Amyloid; Cell adhesion; Cell wall; Disulfide bond; Fimbrium;
KW   Reference proteome; Secreted; Signal.
FT   SIGNAL          1..36
FT                   /evidence="ECO:0000269|PubMed:12832396,
FT                   ECO:0000269|PubMed:12832397"
FT   CHAIN           37..88
FT                   /note="Chaplin-F"
FT                   /id="PRO_5004329169"
FT   DOMAIN          47..87
FT                   /note="Chaplin"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01232"
FT   DISULFID        67..85
FT                   /evidence="ECO:0000305|PubMed:12832397"
SQ   SEQUENCE   88 AA;  8698 MW;  D0AEB6579BD330D9 CRC64;
     MYNPKEHFSM SRIAKGLALT SVAAAAVAGT AGVAAADSGA QAAAAHSPGV LSGNVVQVPV
     HIPVNVCGNT IDVIGLLNPA FGNECEND
 
 
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