ID SAG1_YEAST Reviewed; 650 AA. AC P20840; D6VWH8; DT 01-FEB-1991, integrated into UniProtKB/Swiss-Prot. DT 01-NOV-1995, sequence version 2. DT 27-MAR-2024, entry version 182. DE RecName: Full=Alpha-agglutinin; DE AltName: Full=AG-alpha-1; DE Flags: Precursor; GN Name=SAG1; Synonyms=AGAL1; OrderedLocusNames=YJR004C; ORFNames=J1418; OS Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast). OC Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; OC Saccharomycetales; Saccharomycetaceae; Saccharomyces. OX NCBI_TaxID=559292; RN [1] RP NUCLEOTIDE SEQUENCE [GENOMIC DNA]. RC STRAIN=ATCC 204508 / S288c; RX PubMed=2676603; DOI=10.1016/0014-5793(89)81108-1; RA Hauser K., Tanner W.; RT "Purification of the inducible alpha-agglutinin of S. cerevisiae and RT molecular cloning of the gene."; RL FEBS Lett. 255:290-294(1989). RN [2] RP NUCLEOTIDE SEQUENCE [GENOMIC DNA]. RX PubMed=2677666; DOI=10.1128/mcb.9.8.3155-3165.1989; RA Lipke P.N., Wojciechowicz D., Kurjan J.; RT "AG alpha 1 is the structural gene for the Saccharomyces cerevisiae alpha- RT agglutinin, a cell surface glycoprotein involved in cell-cell interactions RT during mating."; RL Mol. Cell. Biol. 9:3155-3165(1989). RN [3] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=ATCC 204508 / S288c; RX PubMed=8641269; DOI=10.1002/j.1460-2075.1996.tb00557.x; RA Galibert F., Alexandraki D., Baur A., Boles E., Chalwatzis N., Chuat J.-C., RA Coster F., Cziepluch C., de Haan M., Domdey H., Durand P., Entian K.-D., RA Gatius M., Goffeau A., Grivell L.A., Hennemann A., Herbert C.J., RA Heumann K., Hilger F., Hollenberg C.P., Huang M.-E., Jacq C., RA Jauniaux J.-C., Katsoulou C., Kirchrath L., Kleine K., Kordes E., RA Koetter P., Liebl S., Louis E.J., Manus V., Mewes H.-W., Miosga T., RA Obermaier B., Perea J., Pohl T.M., Portetelle D., Pujol A., Purnelle B., RA Ramezani Rad M., Rasmussen S.W., Rose M., Rossau R., RA Schaaff-Gerstenschlaeger I., Smits P.H.M., Scarcez T., Soriano N., RA To Van D., Tzermia M., Van Broekhoven A., Vandenbol M., Wedler H., RA von Wettstein D., Wambutt R., Zagulski M., Zollner A., Karpfinger-Hartl L.; RT "Complete nucleotide sequence of Saccharomyces cerevisiae chromosome X."; RL EMBO J. 15:2031-2049(1996). RN [4] RP GENOME REANNOTATION. RC STRAIN=ATCC 204508 / S288c; RX PubMed=24374639; DOI=10.1534/g3.113.008995; RA Engel S.R., Dietrich F.S., Fisk D.G., Binkley G., Balakrishnan R., RA Costanzo M.C., Dwight S.S., Hitz B.C., Karra K., Nash R.S., Weng S., RA Wong E.D., Lloyd P., Skrzypek M.S., Miyasato S.R., Simison M., Cherry J.M.; RT "The reference genome sequence of Saccharomyces cerevisiae: Then and now."; RL G3 (Bethesda) 4:389-398(2014). RN [5] RP PARTIAL PROTEIN SEQUENCE, GLYCOSYLATION AT ASN-248; SER-282; THR-289; RP THR-299; THR-303; ASN-306; THR-307; THR-308; THR-311; SER-314; THR-315; RP THR-316; THR-329; SER-331; SER-334; SER-335; SER-338; THR-339; THR-340; RP THR-341; THR-342; THR-345; SER-346; THR-349 AND SER-350, LACK OF RP GLYCOSYLATION AT ASN-348, AND DISULFIDE BONDS. RX PubMed=7592821; DOI=10.1074/jbc.270.44.26168; RA Chen M.-H., Shen Z.-M., Bobin S., Kahn P.C., Lipke P.N.; RT "Structure of Saccharomyces cerevisiae alpha-agglutinin. Evidence for a RT yeast cell wall protein with multiple immunoglobulin-like domains with RT atypical disulfides."; RL J. Biol. Chem. 270:26168-26177(1995). RN [6] RP GLYCOSYLATION, AND GPI-ANCHOR. RX PubMed=8455628; DOI=10.1128/mcb.13.4.2554-2563.1993; RA Wojciechowicz D., Lu C.F., Kurjan J., Lipke P.N.; RT "Cell surface anchorage and ligand-binding domains of the Saccharomyces RT cerevisiae cell adhesion protein alpha-agglutinin, a member of the RT immunoglobulin superfamily."; RL Mol. Cell. Biol. 13:2554-2563(1993). RN [7] RP SUBCELLULAR LOCATION. RX PubMed=8007981; DOI=10.1128/mcb.14.7.4825-4833.1994; RA Lu C.-F., Kurjan J., Lipke P.N.; RT "A pathway for cell wall anchorage of Saccharomyces cerevisiae alpha- RT agglutinin."; RL Mol. Cell. Biol. 14:4825-4833(1994). RN [8] RP GPI-ANCHOR, AND CROSS-LINKING TO CELL WALL. RX PubMed=7844147; DOI=10.1083/jcb.128.3.333; RA Lu C.-F., Montijn R.C., Brown J.L., Klis F., Kurjan J., Bussey H., RA Lipke P.N.; RT "Glycosyl phosphatidylinositol-dependent cross-linking of alpha-agglutinin RT and beta 1,6-glucan in the Saccharomyces cerevisiae cell wall."; RL J. Cell Biol. 128:333-340(1995). RN [9] RP FUNCTION, AND MUTAGENESIS OF ILE-214; ASP-215; TYR-216; ASP-217; THR-289; RP ILE-290; ASP-291; HIS-292; LEU-294; GLU-295; PHE-296; TYR-298; TYR-322; RP GLN-323; GLY-324 AND ARG-325. RX PubMed=8741846; DOI=10.1091/mbc.7.1.143; RA de Nobel H., Lipke P.N., Kurjan J.; RT "Identification of a ligand-binding site in an immunoglobulin fold domain RT of the Saccharomyces cerevisiae adhesion protein alpha-agglutinin."; RL Mol. Biol. Cell 7:143-153(1996). RN [10] RP SUBCELLULAR LOCATION. RX PubMed=9613572; DOI=10.1007/s004380050706; RA Hamada K., Fukuchi S., Arisawa M., Baba M., Kitada K.; RT "Screening for glycosylphosphatidylinositol (GPI)-dependent cell wall RT proteins in Saccharomyces cerevisiae."; RL Mol. Gen. Genet. 258:53-59(1998). RN [11] RP INTERACTION WITH AGA2. RX PubMed=11292808; DOI=10.1128/jb.183.9.2874-2880.2001; RA Zhao H., Shen Z.M., Kahn P.C., Lipke P.N.; RT "Interaction of alpha-agglutinin and a-agglutinin, Saccharomyces cerevisiae RT sexual cell adhesion molecules."; RL J. Bacteriol. 183:2874-2880(2001). CC -!- FUNCTION: Cell surface glycoprotein promoting cell-cell contact to CC facilitate mating. S.cerevisiae A and alpha cells express the CC complementary cell surface glycoproteins A-agglutinin and alpha-, CC respectively, which interact with one another to promote cellular CC aggregation during mating. {ECO:0000269|PubMed:8741846}. CC -!- SUBUNIT: Interacts with AGA2. {ECO:0000269|PubMed:11292808}. CC -!- SUBCELLULAR LOCATION: Secreted, cell wall. Membrane; Lipid-anchor, GPI- CC anchor. Note=Covalently-linked GPI-modified cell wall protein (GPI- CC CWP). CC -!- INDUCTION: By exposition to pheromone (A-factor) secreted by the CC opposite mating type cells (type A). CC -!- PTM: N-glycosylated, and O-glycosylated by both PMT1 and PMT2. CC {ECO:0000269|PubMed:7592821, ECO:0000269|PubMed:8455628}. CC -!- PTM: The GPI-anchor is attached to the protein in the endoplasmic CC reticulum and serves to target the protein to the cell surface. There, CC the glucosamine-inositol phospholipid moiety is cleaved off and the CC GPI-modified mannoprotein is covalently attached via its lipidless GPI CC glycan remnant to the 1,6-beta-glucan of the outer cell wall layer. CC -!- SIMILARITY: To C.albicans ALS1. {ECO:0000305}. CC -!- WEB RESOURCE: Name=Functional Glycomics Gateway - Glycan Binding; CC Note=Alpha-agglutinin; CC URL="http://www.functionalglycomics.org/glycomics/GBPServlet?&operationType=view&cbpId=cbp_oth_other_801"; CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; X16861; CAA34752.1; -; Genomic_DNA. DR EMBL; M28164; AAA34417.1; -; Genomic_DNA. DR EMBL; X87611; CAA60926.1; -; Genomic_DNA. DR EMBL; Z49504; CAA89526.1; -; Genomic_DNA. DR EMBL; BK006943; DAA08794.1; -; Genomic_DNA. DR PIR; S22835; S22835. DR RefSeq; NP_012537.1; NM_001181661.1. DR AlphaFoldDB; P20840; -. DR SMR; P20840; -. DR BioGRID; 33760; 38. DR DIP; DIP-5692N; -. DR MINT; P20840; -. DR STRING; 4932.YJR004C; -. DR GlyCosmos; P20840; 33 sites, No reported glycans. DR GlyGen; P20840; 33 sites. DR iPTMnet; P20840; -. DR PaxDb; 4932-YJR004C; -. DR PeptideAtlas; P20840; -. DR EnsemblFungi; YJR004C_mRNA; YJR004C; YJR004C. DR GeneID; 853460; -. DR KEGG; sce:YJR004C; -. DR AGR; SGD:S000003764; -. DR SGD; S000003764; SAG1. DR VEuPathDB; FungiDB:YJR004C; -. DR eggNOG; ENOG502RGCG; Eukaryota. DR HOGENOM; CLU_019475_0_0_1; -. DR InParanoid; P20840; -. DR OMA; IIIHVET; -. DR OrthoDB; 2032179at2759; -. DR BioCyc; YEAST:G3O-31650-MONOMER; -. DR BioGRID-ORCS; 853460; 0 hits in 10 CRISPR screens. DR PRO; PR:P20840; -. DR Proteomes; UP000002311; Chromosome X. DR RNAct; P20840; Protein. DR GO; GO:0071944; C:cell periphery; HDA:SGD. DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-KW. DR GO; GO:0009277; C:fungal-type cell wall; IDA:SGD. DR GO; GO:0000324; C:fungal-type vacuole; HDA:SGD. DR GO; GO:0098552; C:side of membrane; IEA:UniProtKB-KW. DR GO; GO:0050839; F:cell adhesion molecule binding; IMP:SGD. DR GO; GO:0000752; P:agglutination involved in conjugation with cellular fusion; IMP:SGD. DR Gene3D; 2.60.40.1280; -; 1. DR Gene3D; 2.60.40.2430; Agglutinin-like protein, N-terminal domain, N2 subdomain; 1. DR InterPro; IPR008966; Adhesion_dom_sf. DR InterPro; IPR024672; Agglutinin-like_N. DR InterPro; IPR043063; Agglutinin-like_N_N2. DR InterPro; IPR033504; ALS. DR InterPro; IPR011252; Fibrogen-bd_dom1. DR PANTHER; PTHR33793:SF2; AGGLUTININ-LIKE PROTEIN 6; 1. DR PANTHER; PTHR33793; ALPHA-AGGLUTININ; 1. DR Pfam; PF11766; Candida_ALS_N; 1. DR SMART; SM01056; Candida_ALS_N; 1. DR SUPFAM; SSF49401; Bacterial adhesins; 1. PE 1: Evidence at protein level; KW Cell adhesion; Cell wall; Direct protein sequencing; Disulfide bond; KW Glycoprotein; GPI-anchor; Lipoprotein; Membrane; Reference proteome; KW Repeat; Secreted; Signal. FT SIGNAL 1..19 FT CHAIN 20..627 FT /note="Alpha-agglutinin" FT /id="PRO_0000022265" FT PROPEP 628..650 FT /note="Removed in mature form" FT /evidence="ECO:0000255" FT /id="PRO_0000022266" FT REPEAT 339..378 FT /note="1" FT REPEAT 384..423 FT /note="2" FT REGION 216..322 FT /note="Ig-like fold domain important for alpha-agglutinin FT activity, contributing to a functional binding site for a- FT agglutinin" FT REGION 339..423 FT /note="2 X 40 AA tandem repeats" FT SITE 348 FT /note="Not glycosylated" FT /evidence="ECO:0000269|PubMed:7592821" FT LIPID 627 FT /note="GPI-anchor amidated glycine" FT /evidence="ECO:0000255" FT CARBOHYD 79 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT CARBOHYD 109 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT CARBOHYD 135 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT CARBOHYD 248 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 282 FT /note="O-linked (Man...) serine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 289 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 299 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 303 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 306 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 307 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 308 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 311 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 314 FT /note="O-linked (Man...) serine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 315 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 316 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 329 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 331 FT /note="O-linked (Man...) serine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 334 FT /note="O-linked (Man...) serine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 335 FT /note="O-linked (Man...) serine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 338 FT /note="O-linked (Man...) serine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 339 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 340 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 341 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 342 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 345 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 346 FT /note="O-linked (Man...) serine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 349 FT /note="O-linked (Man...) threonine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 350 FT /note="O-linked (Man...) serine" FT /evidence="ECO:0000269|PubMed:7592821" FT CARBOHYD 364 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT CARBOHYD 402 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT CARBOHYD 485 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT CARBOHYD 501 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT CARBOHYD 614 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT DISULFID 97..114 FT /evidence="ECO:0000269|PubMed:7592821" FT DISULFID 202..300 FT /evidence="ECO:0000269|PubMed:7592821" FT MUTAGEN 211 FT /note="T->I: Little effect on secreted alpha-agglutinin FT activity." FT MUTAGEN 214 FT /note="I->M: No effect on secreted alpha-agglutinin FT activity." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 215 FT /note="D->A,N: Little or no effect on secreted FT alpha-agglutinin activity." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 216 FT /note="Y->D: Complete loss of alpha-agglutinin activity." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 216 FT /note="Y->F: No effect on secreted alpha-agglutinin FT activity." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 216 FT /note="Y->S: Decreases secreted alpha-agglutinin activity FT by 100-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 216 FT /note="Y->V: Decreases secreted alpha-agglutinin activity FT by 10-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 217 FT /note="D->A: Little effect on secreted alpha-agglutinin FT activity." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 217 FT /note="D->N: Decreases secreted alpha-agglutinin activity FT by 10-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 289 FT /note="T->A: Decreases secreted alpha-agglutinin activity FT by less than 2-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 290 FT /note="I->M: Decreases secreted alpha-agglutinin activity FT by less than 2-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 291 FT /note="D->A,N: Decreases secreted alpha-agglutinin activity FT by 4-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 292 FT /note="H->L,R: Almost complete loss of secreted FT alpha-agglutinin activity." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 294 FT /note="L->S: Decreases secreted alpha-agglutinin activity FT by more than 20-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 295 FT /note="E->A,Q: Decreases secreted alpha-agglutinin activity FT by 2-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 296 FT /note="F->Y: Decreases secreted alpha-agglutinin activity FT by more than 20-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 298 FT /note="Y->H: Decreases secreted alpha-agglutinin activity FT by less than 2-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 322 FT /note="Y->A: Decreases secreted alpha-agglutinin activity FT by 60-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 322 FT /note="Y->C: Almost complete loss of secreted FT alpha-agglutinin activity by 10-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 322 FT /note="Y->F: Decreases secreted alpha-agglutinin activity FT by 15-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 323 FT /note="Q->L: Decreases secreted alpha-agglutinin activity FT by 2-fold." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 324 FT /note="G->A: Little effect on secreted alpha-agglutinin FT activity." FT /evidence="ECO:0000269|PubMed:8741846" FT MUTAGEN 325 FT /note="R->G: Little effect on secreted alpha-agglutinin FT activity." FT /evidence="ECO:0000269|PubMed:8741846" FT CONFLICT 449 FT /note="S -> P (in Ref. 1; AAA34417)" FT /evidence="ECO:0000305" FT CONFLICT 556 FT /note="K -> E (in Ref. 1; AAA34417)" FT /evidence="ECO:0000305" FT CONFLICT 581 FT /note="V -> L (in Ref. 1; AAA34417)" FT /evidence="ECO:0000305" SQ SEQUENCE 650 AA; 70340 MW; 8BBF7A1C44C93C2B CRC64; MFTFLKIILW LFSLALASAI NINDITFSNL EITPLTANKQ PDQGWTATFD FSIADASSIR EGDEFTLSMP HVYRIKLLNS SQTATISLAD GTEAFKCYVS QQAAYLYENT TFTCTAQNDL SSYNTIDGSI TFSLNFSDGG SSYEYELENA KFFKSGPMLV KLGNQMSDVV NFDPAAFTEN VFHSGRSTGY GSFESYHLGM YCPNGYFLGG TEKIDYDSSN NNVDLDCSSV QVYSSNDFND WWFPQSYNDT NADVTCFGSN LWITLDEKLY DGEMLWVNAL QSLPANVNTI DHALEFQYTC LDTIANTTYA TQFSTTREFI VYQGRNLGTA SAKSSFISTT TTDLTSINTS AYSTGSISTV ETGNRTTSEV ISHVVTTSTK LSPTATTSLT IAQTSIYSTD SNITVGTDIH TTSEVISDVE TISRETASTV VAAPTSTTGW TGAMNTYISQ FTSSSFATIN STPIISSSAV FETSDASIVN VHTENITNTA AVPSEEPTFV NATRNSLNSF CSSKQPSSPS SYTSSPLVSS LSVSKTLLST SFTPSVPTSN TYIKTKNTGY FEHTALTTSS VGLNSFSETA VSSQGTKIDT FLVSSLIAYP SSASGSQLSG IQQNFTSTSL MISTYEGKAS IFFSAELGSI IFLLLSYLLF //