2026-09-05_00000295|medium|9XPJ

Crystal structure of the pufferfish taste receptor Tas1r1-Tas1r3 ligand binding domains in complex with L-alanine; X-ray diffraction 3.10Å
Protein #1 513 residues (86% resolved)

MQLQMKMLVAVLSATPLMLQLVTGELDYSTHGQGMQLHGNFSIAGFFPLHYGEKLDGSLPALELCKDGEINKHGFHLLQAMKLAVDEINKDAGTQALLPGVVLGYQLYDTCTVSAGILASLDVLEYWSPSASGKVPNFDISQRPLAVIGPDSSSNSFTPATLLGAHLIPQISYEASNEMLSNKVLYPSFFRTIPSDKNQVAAMIQLLVRFNWTWIALLGSDNSYGLEGMQSLSQQAPEFNISIAYQGVIPGYTQDTVQVMRNIVDSILKTKVTTIVVFSSKSKLSKFMPFVIEQKVTGKVWIGTEDWSPSSLISGIPGIHTIGTVIGVAVKYTIIPGFEKRLVEASLHQSNDGNASNVTANLSNTCLQSRDLYSLAEMNFPLDNYDITSAINVYKAVYAVAHALHQVLDCDSGECQRKRVYPWELLSRLKQVRFLMANSSVYFDSNGDPPTGYDIICWVWHGTEWSVRRVGSFSPNPISLTIDADKIEWHISGDSRSVPQSGVAMPGAEDDVV

MQLQMKMLVAVLSATPLMLQLVTGELDYSTHGQGMQLHGNFSIAGFFPLHYGEKLDGSLPALELCKDGEINKHGFHLLQAMKLAVDEINKDAGTQALLPGVVLGYQLYDTCTVSAGILASLDVLEYWSPSASGKVPNFDISQRPLAVIGPDSSSNSFTPATLLGAHLIPQISYEASNEMLSNKVLYPSFFRTIPSDKNQVAAMIQLLVRFNWTWIALLGSDNSYGLEGMQSLSQQAPEFNISIAYQGVIPGYTQDTVQVMRNIVDSILKTKVTTIVVFSSKSKLSKFMPFVIEQKVTGKVWIGTEDWSPSSLISGIPGIHTIGTVIGVAVKYTIIPGFEKRLVEASLHQSNDGNASNVTANLSNTCLQSRDLYSLAEMNFPLDNYDITSAINVYKAVYAVAHALHQVLDCDSGECQRKRVYPWELLSRLKQVRFLMANSSVYFDSNGDPPTGYDIICWVWHGTEWSVRRVGSFSPNPISLTIDADKIEWHISGDSRSVPQSGVAMPGAEDDVV
Protein #2 504 residues (91% resolved)

MAVSPTLLVLFWVFKMTSATPAWFQNISTSLFNLPGDIKLGGLFPLNRLTSNLSQRTEPDQISCDRINTYGLGMAIAMKYTVDEINANQILLPGIQLGYEIYDTCLQSAIIVRPTLSLLSAKHDNTLSVQCNYTNYETSISAVIGPNNSEMVSVIGKLLGFFLMPQISYGATSEKFSDTALYPSFFRTVPSDKWQVEAMVLLLEEFNWNWVAVVGSDEEYGQRGVQDFSKLAANKSISVAYQGLIPVYTDPEPMVKTILSNINSTKARVVIVFSLSNQAEIFFKEVIRMKLKGVWIGSTSWTINDAVTSLPDIQTVGTILGFVEQTQSVDLLRAYTYALLNKLSEERAHTRSSAQNSNYPSNPCPQCWNLSPANISLVTDLVIQRKAFSVYAAIYSVAQALHNFLQCNSTACKNTSEVKIYPWKLLKTLRHTKVDINGTMLEFDSNGNPNVGYNLIELIWKNSTLEFVEVGSFNKILNINVSLFKWHTETSEVPQSDYKDDDDK

MAVSPTLLVLFWVFKMTSATPAWFQNISTSLFNLPGDIKLGGLFPLNRLTSNLSQRTEPDQISCDRINTYGLGMAIAMKYTVDEINANQILLPGIQLGYEIYDTCLQSAIIVRPTLSLLSAKHDNTLSVQCNYTNYETSISAVIGPNNSEMVSVIGKLLGFFLMPQISYGATSEKFSDTALYPSFFRTVPSDKWQVEAMVLLLEEFNWNWVAVVGSDEEYGQRGVQDFSKLAANKSISVAYQGLIPVYTDPEPMVKTILSNINSTKARVVIVFSLSNQAEIFFKEVIRMKLKGVWIGSTSWTINDAVTSLPDIQTVGTILGFVEQTQSVDLLRAYTYALLNKLSEERAHTRSSAQNSNYPSNPCPQCWNLSPANISLVTDLVIQRKAFSVYAAIYSVAQALHNFLQCNSTACKNTSEVKIYPWKLLKTLRHTKVDINGTMLEFDSNGNPNVGYNLIELIWKNSTLEFVEVGSFNKILNINVSLFKWHTETSEVPQSDYKDDDDK
Non polymer #3 ALA

InChI=1S/C3H7NO2/c1-2(4)3(5)6/h2H,4H2,1H3,(H,5,6)/t2-/m0/s1

C[C@@H](C(=O)O)N
Non polymer #4 CL

InChI=1S/ClH/h1H/p-1

[Cl-]
Non polymer #5 NA

InChI=1S/Na/q+1

[Na+]
Non polymer #6 NAG

InChI=1S/C8H15NO6/c1-3(11)9-5-7(13)6(12)4(2-10)15-8(5)14/h4-8,10,12-14H,2H2,1H3,(H,9,11)/t4-,5-,6-,7-,8-/m1/s1

CC(=O)N[C@@H]1[C@H]([C@@H]([C@H](O[C@H]1O)CO)O)O
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Reference