ID   RU1C2_SORBI             Reviewed;         228 AA.
AC   C5XYW4;
DT   14-DEC-2011, integrated into UniProtKB/Swiss-Prot.
DT   01-SEP-2009, sequence version 1.
DT   25-MAY-2022, entry version 59.
DE   RecName: Full=U1 small nuclear ribonucleoprotein C-2 {ECO:0000255|HAMAP-Rule:MF_03153};
DE            Short=U1 snRNP C-2 {ECO:0000255|HAMAP-Rule:MF_03153};
DE            Short=U1-C-2 {ECO:0000255|HAMAP-Rule:MF_03153};
DE            Short=U1C-2 {ECO:0000255|HAMAP-Rule:MF_03153};
GN   OrderedLocusNames=Sb04g028260;
OS   Sorghum bicolor (Sorghum) (Sorghum vulgare).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; PACMAD clade;
OC   Panicoideae; Andropogonodae; Andropogoneae; Sorghinae; Sorghum.
OX   NCBI_TaxID=4558;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. BTx623;
RX   PubMed=19189423; DOI=10.1038/nature07723;
RA   Paterson A.H., Bowers J.E., Bruggmann R., Dubchak I., Grimwood J.,
RA   Gundlach H., Haberer G., Hellsten U., Mitros T., Poliakov A., Schmutz J.,
RA   Spannagl M., Tang H., Wang X., Wicker T., Bharti A.K., Chapman J.,
RA   Feltus F.A., Gowik U., Grigoriev I.V., Lyons E., Maher C.A., Martis M.,
RA   Narechania A., Otillar R.P., Penning B.W., Salamov A.A., Wang Y., Zhang L.,
RA   Carpita N.C., Freeling M., Gingle A.R., Hash C.T., Keller B., Klein P.,
RA   Kresovich S., McCann M.C., Ming R., Peterson D.G., Mehboob-ur-Rahman M.,
RA   Ware D., Westhoff P., Mayer K.F.X., Messing J., Rokhsar D.S.;
RT   "The Sorghum bicolor genome and the diversification of grasses.";
RL   Nature 457:551-556(2009).
CC   -!- FUNCTION: Component of the spliceosomal U1 snRNP, which is essential
CC       for recognition of the pre-mRNA 5' splice-site and the subsequent
CC       assembly of the spliceosome. U1-C is directly involved in initial 5'
CC       splice-site recognition for both constitutive and regulated alternative
CC       splicing. The interaction with the 5' splice-site seems to precede
CC       base-pairing between the pre-mRNA and the U1 snRNA. Stimulates
CC       commitment or early (E) complex formation by stabilizing the base
CC       pairing of the 5' end of the U1 snRNA and the 5' splice-site region.
CC       {ECO:0000255|HAMAP-Rule:MF_03153}.
CC   -!- SUBUNIT: U1 snRNP is composed of the 7 core Sm proteins B/B', D1, D2,
CC       D3, E, F and G that assemble in a heptameric protein ring on the Sm
CC       site of the small nuclear RNA to form the core snRNP, and at least 3 U1
CC       snRNP-specific proteins U1-70K, U1-A and U1-C. U1-C interacts with U1
CC       snRNA and the 5' splice-site region of the pre-mRNA.
CC       {ECO:0000255|HAMAP-Rule:MF_03153}.
CC   -!- SUBCELLULAR LOCATION: Nucleus {ECO:0000255|HAMAP-Rule:MF_03153}.
CC   -!- SIMILARITY: Belongs to the U1 small nuclear ribonucleoprotein C family.
CC       {ECO:0000255|HAMAP-Rule:MF_03153}.
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DR   EMBL; CM000763; EES05542.1; -; Genomic_DNA.
DR   RefSeq; XP_002452566.1; XM_002452521.1.
DR   AlphaFoldDB; C5XYW4; -.
DR   SMR; C5XYW4; -.
DR   STRING; 4558.Sb04g028260.1; -.
DR   EnsemblPlants; EES05542; EES05542; SORBI_3004G241800.
DR   GeneID; 8068597; -.
DR   Gramene; EES05542; EES05542; SORBI_3004G241800.
DR   KEGG; sbi:8068597; -.
DR   eggNOG; KOG3454; Eukaryota.
DR   HOGENOM; CLU_079697_1_0_1; -.
DR   InParanoid; C5XYW4; -.
DR   OMA; ILPRPMM; -.
DR   OrthoDB; 1594407at2759; -.
DR   Proteomes; UP000000768; Chromosome 4.
DR   ExpressionAtlas; C5XYW4; baseline.
DR   GO; GO:0000243; C:commitment complex; IEA:UniProtKB-UniRule.
DR   GO; GO:0005685; C:U1 snRNP; IBA:GO_Central.
DR   GO; GO:0071004; C:U2-type prespliceosome; IEA:UniProtKB-UniRule.
DR   GO; GO:0003729; F:mRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0030627; F:pre-mRNA 5'-splice site binding; IBA:GO_Central.
DR   GO; GO:0030619; F:U1 snRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0000395; P:mRNA 5'-splice site recognition; IBA:GO_Central.
DR   GO; GO:0000387; P:spliceosomal snRNP assembly; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_03153; U1_C; 1.
DR   InterPro; IPR000690; Matrin/U1-C_Znf_C2H2.
DR   InterPro; IPR003604; Matrin/U1-like-C_Znf_C2H2.
DR   InterPro; IPR013085; U1-CZ_Znf_C2H2.
DR   InterPro; IPR017340; U1_snRNP-C.
DR   InterPro; IPR036236; Znf_C2H2_sf.
DR   PANTHER; PTHR31148; PTHR31148; 1.
DR   Pfam; PF06220; zf-U1; 1.
DR   PIRSF; PIRSF037969; U1_snRNP-C; 1.
DR   SMART; SM00451; ZnF_U1; 1.
DR   SUPFAM; SSF57667; SSF57667; 1.
DR   PROSITE; PS50171; ZF_MATRIN; 1.
PE   3: Inferred from homology;
KW   Metal-binding; Nucleus; Reference proteome; Ribonucleoprotein; RNA-binding;
KW   Zinc; Zinc-finger.
FT   CHAIN           1..228
FT                   /note="U1 small nuclear ribonucleoprotein C-2"
FT                   /id="PRO_0000414271"
FT   ZN_FING         4..36
FT                   /note="Matrin-type"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03153"
FT   REGION          105..228
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        105..217
FT                   /note="Pro residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   228 AA;  23798 MW;  36C09484D78C7687 CRC64;
     MPRYYCDYCD TYLTHDSPSV RKQHNAGYKH KANVRTYYQQ FEEQQTQSLI DQRIKEHLGQ
     AAAFQAGAPF NQHMLAFPGA VARPRLPILP TPGMPHGFPQ APLMPGVRPP ILPAPGVPGY
     PGAPPTMPQP GAPPGSMPQP GAPPGSMPQP GAPPGSMPMQ MAPLPRPPTL PPPTSGVPGA
     PIPNSAAPPA IYQANPPAPA GPTSGAPPAP PTAPQPAFSY ALPSEGNH