ID   RNAS1_BUBBU             Reviewed;         124 AA.
AC   P00657;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   13-AUG-1987, sequence version 1.
DT   03-AUG-2022, entry version 100.
DE   RecName: Full=Ribonuclease pancreatic;
DE            EC=4.6.1.18;
DE   AltName: Full=RNase 1;
DE   AltName: Full=RNase A;
GN   Name=RNASE1; Synonyms=RNS1;
OS   Bubalus bubalis (Domestic water buffalo).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Laurasiatheria; Artiodactyla; Ruminantia; Pecora; Bovidae;
OC   Bovinae; Bubalus.
OX   NCBI_TaxID=89462;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   STRAIN=River breed, and Swamp breed;
RX   PubMed=540006; DOI=10.1007/bf00504352;
RA   Sidik A., Martena B., Beintema J.J.;
RT   "Amino acid sequence differences in pancreatic ribonucleases from water
RT   buffalo breeds from Indonesia and Italy.";
RL   Biochem. Genet. 17:1151-1158(1979).
RN   [2]
RP   PROTEIN SEQUENCE.
RC   STRAIN=River breed, and Swamp breed;
RX   PubMed=7353035; DOI=10.1016/0005-2795(80)90065-3;
RA   Beintema J.J.;
RT   "Primary structures of pancreatic ribonucleases from Bovidae. Impala,
RT   Thomson's gazelle, nilgai and water buffalo.";
RL   Biochim. Biophys. Acta 621:89-102(1980).
CC   -!- FUNCTION: Endonuclease that catalyzes the cleavage of RNA on the 3'
CC       side of pyrimidine nucleotides. Acts on single-stranded and double-
CC       stranded RNA (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=an [RNA] containing cytidine + H2O = an [RNA]-3'-cytidine-3'-
CC         phosphate + a 5'-hydroxy-ribonucleotide-3'-[RNA].; EC=4.6.1.18;
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=an [RNA] containing uridine + H2O = an [RNA]-3'-uridine-3'-
CC         phosphate + a 5'-hydroxy-ribonucleotide-3'-[RNA].; EC=4.6.1.18;
CC   -!- SUBUNIT: Monomer. Interacts with and forms tight 1:1 complexes with
CC       RNH1. Dimerization of two such complexes may occur. Interaction with
CC       RNH1 inhibits this protein (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Secreted.
CC   -!- TISSUE SPECIFICITY: Pancreas.
CC   -!- PTM: Swamp breed ribonuclease do not bind carbohydrate, but there is
CC       evidence of a polymorphic form that does.
CC   -!- MISCELLANEOUS: The sequence of the river breed (Italy) is shown, the
CC       other type is known as swamp-type (Indonesia).
CC   -!- SIMILARITY: Belongs to the pancreatic ribonuclease family.
CC       {ECO:0000305}.
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DR   PIR; A00805; NRWB.
DR   AlphaFoldDB; P00657; -.
DR   SMR; P00657; -.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0016829; F:lyase activity; IEA:UniProtKB-KW.
DR   GO; GO:0003676; F:nucleic acid binding; IEA:InterPro.
DR   GO; GO:0004522; F:ribonuclease A activity; IEA:UniProtKB-EC.
DR   Gene3D; 3.10.130.10; -; 1.
DR   InterPro; IPR001427; RNaseA.
DR   InterPro; IPR036816; RNaseA-like_dom_sf.
DR   InterPro; IPR023411; RNaseA_AS.
DR   InterPro; IPR023412; RNaseA_domain.
DR   PANTHER; PTHR11437; PTHR11437; 1.
DR   Pfam; PF00074; RnaseA; 1.
DR   PRINTS; PR00794; RIBONUCLEASE.
DR   SMART; SM00092; RNAse_Pc; 1.
DR   SUPFAM; SSF54076; SSF54076; 1.
DR   PROSITE; PS00127; RNASE_PANCREATIC; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Disulfide bond; Endonuclease; Glycoprotein;
KW   Hydrolase; Lyase; Nuclease; Secreted.
FT   CHAIN           1..124
FT                   /note="Ribonuclease pancreatic"
FT                   /id="PRO_0000057183"
FT   REGION          1..24
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        9..24
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   ACT_SITE        12
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        119
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250"
FT   BINDING         7
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         10
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         41..45
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         66
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         85
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   CARBOHYD        34
FT                   /note="N-linked (GlcNAc...) asparagine; in river-breed
FT                   only"
FT   DISULFID        26..84
FT                   /evidence="ECO:0000250"
FT   DISULFID        40..95
FT                   /evidence="ECO:0000250"
FT   DISULFID        58..110
FT                   /evidence="ECO:0000250"
FT   DISULFID        65..72
FT                   /evidence="ECO:0000250"
FT   VARIANT         34
FT                   /note="N -> S (in strain: swamp breed)"
FT   VARIANT         61
FT                   /note="E -> K (in strain: swamp breed)"
FT   VARIANT         120
FT                   /note="Y -> F (in strain: swamp breed)"
SQ   SEQUENCE   124 AA;  13699 MW;  9F44C5171F8CDC2A CRC64;
     KETAAAKFQR QHMDSSTSSA SSSNYCNQMM KSRNMTSDRC KPVNTFVHES LADVQAVCSQ
     ENVACKNGQT NCYQSYSTMS ITDCRETGSS KYPNCAYKTT QANKHIIVAC EGNPYVPVHY
     DASV