ID   CHI1_RHINI              Reviewed;         493 AA.
AC   P29025;
DT   01-DEC-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-1992, sequence version 1.
DT   25-MAY-2022, entry version 91.
DE   RecName: Full=Chitinase 1;
DE            EC=3.2.1.14;
DE   Flags: Precursor;
GN   Name=CHI1;
OS   Rhizopus niveus.
OC   Eukaryota; Fungi; Fungi incertae sedis; Mucoromycota; Mucoromycotina;
OC   Mucoromycetes; Mucorales; Mucorineae; Rhizopodaceae; Rhizopus.
OX   NCBI_TaxID=4844;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=NBRC 4810 / AS 3.4817;
RA   Yanai K.;
RL   Submitted (JUN-1992) to the EMBL/GenBank/DDBJ databases.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Random endo-hydrolysis of N-acetyl-beta-D-glucosaminide
CC         (1->4)-beta-linkages in chitin and chitodextrins.; EC=3.2.1.14;
CC   -!- SIMILARITY: Belongs to the glycosyl hydrolase 18 family. Chitinase
CC       class III subfamily. {ECO:0000305}.
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DR   EMBL; D10154; BAA01018.1; -; Genomic_DNA.
DR   PIR; S36931; S36931.
DR   AlphaFoldDB; P29025; -.
DR   SMR; P29025; -.
DR   CAZy; CBM19; Carbohydrate-Binding Module Family 19.
DR   CAZy; GH18; Glycoside Hydrolase Family 18.
DR   GO; GO:0008061; F:chitin binding; IEA:InterPro.
DR   GO; GO:0004568; F:chitinase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006032; P:chitin catabolic process; IEA:UniProtKB-KW.
DR   GO; GO:0000272; P:polysaccharide catabolic process; IEA:UniProtKB-KW.
DR   CDD; cd02877; GH18_hevamine_XipI_class_III; 1.
DR   InterPro; IPR005089; CBM_fam19.
DR   InterPro; IPR045321; Cts1-like.
DR   InterPro; IPR001223; Glyco_hydro18_cat.
DR   InterPro; IPR001579; Glyco_hydro_18_chit_AS.
DR   InterPro; IPR017853; Glycoside_hydrolase_SF.
DR   Pfam; PF03427; CBM_19; 1.
DR   Pfam; PF00704; Glyco_hydro_18; 1.
DR   SUPFAM; SSF51445; SSF51445; 1.
DR   PROSITE; PS01095; GH18_1; 1.
DR   PROSITE; PS51910; GH18_2; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Chitin degradation; Glycosidase; Hydrolase;
KW   Polysaccharide degradation; Signal.
FT   SIGNAL          1..20
FT   CHAIN           21..493
FT                   /note="Chitinase 1"
FT                   /id="PRO_0000011929"
FT   DOMAIN          27..318
FT                   /note="GH18"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01258"
FT   ACT_SITE        164
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01258"
SQ   SEQUENCE   493 AA;  51917 MW;  94F1B6774D60D760 CRC64;
     MISCNILGIT IAAFITSTLA AYSSNGVNVM YYWGQNSAGG SNTQGSLVSY CQSGQVDVII
     LSFLNKFNMG GLPEINLASA CEQTFFPNTN LLHCPTVGSD IKTCQSNGVK VLLSLGGAAG
     SYGFSSDSEG QTFAETIWNL FGGGTSDTRP FDDAVIDGID LDIEGGSSTG YAAFVTALRS
     KGHFLIGAAP QCPFPDAILG SVIDAVGLDF VNVQFYNNVC SVASGSSFNF DVWNDWAKNK
     SPNKNIKVML TVPGSSTAAG SGYASIAELG PIVSSVISQY SSFGGVSVWD ASQAWNNNGF
     HSELYSIVHG SSAALGQAAR KTPFPNTSSI TTTSLATASS ALFPLLYAGR SCSSQSKVSC
     TSTGSYTICN YGKWVTAPCP PGVICLSSAQ SNNTDLTVSA QFFITSFAGG SFKAIINARR
     TTLTPFEKMK TIEFTVPDHV RLSQCNLGKI EQVGRSVRIR LKDHPNMAFV LNLSGNVSSD
     AFVAPDPSSW RFS