登録情報 データベース : PDB / ID : 8ida 構造の表示 ダウンロードとリンクタイトル Overall structure of the LAT1-4F2hc bound with tyrosine 要素4F2 cell-surface antigen heavy chain Large neutral amino acids transporter small subunit 1 詳細キーワード MEMBRANE PROTEIN / complex / amino acid機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
L-tryptophan transmembrane transport / positive regulation of L-leucine import across plasma membrane / L-tryptophan transmembrane transporter activity / cellular response to L-arginine / apical pole of neuron / tyrosine transport / L-histidine transport / amino acid transport complex / L-leucine import across plasma membrane / L-alanine transmembrane transporter activity ... L-tryptophan transmembrane transport / positive regulation of L-leucine import across plasma membrane / L-tryptophan transmembrane transporter activity / cellular response to L-arginine / apical pole of neuron / tyrosine transport / L-histidine transport / amino acid transport complex / L-leucine import across plasma membrane / L-alanine transmembrane transporter activity / L-alanine import across plasma membrane / Defective SLC7A7 causes lysinuric protein intolerance (LPI) / aromatic amino acid transmembrane transporter activity / phenylalanine transport / methionine transport / L-leucine transmembrane transporter activity / thyroid hormone transmembrane transporter activity / isoleucine transport / valine transport / amino acid transmembrane transport / proline transport / alanine transport / L-amino acid transmembrane transporter activity / L-leucine transport / thyroid hormone transport / negative regulation of vascular associated smooth muscle cell apoptotic process / neutral amino acid transport / positive regulation of cytokine production involved in immune response / amino acid import across plasma membrane / external side of apical plasma membrane / neutral L-amino acid transmembrane transporter activity / Tryptophan catabolism / exogenous protein binding / Amino acid transport across the plasma membrane / amino acid transmembrane transporter activity / anchoring junction / antiporter activity / Basigin interactions / response to muscle activity / microvillus membrane / positive regulation of interleukin-4 production / response to exogenous dsRNA / positive regulation of interleukin-17 production / amino acid transport / tryptophan transport / positive regulation of glial cell proliferation / response to hyperoxia / xenobiotic transport / transport across blood-brain barrier / cellular response to glucose starvation / liver regeneration / negative regulation of autophagy / basal plasma membrane / peptide antigen binding / positive regulation of type II interferon production / calcium ion transport / melanosome / double-stranded RNA binding / virus receptor activity / cellular response to lipopolysaccharide / basolateral plasma membrane / carbohydrate metabolic process / apical plasma membrane / cadherin binding / protein heterodimerization activity / intracellular membrane-bounded organelle / negative regulation of gene expression / lysosomal membrane / synapse / symbiont entry into host cell / cell surface / protein homodimerization activity / RNA binding / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol 類似検索 - 分子機能 L-type amino acid transporter / Solute carrier family 3 member 2, N-terminal domain / 4F2 cell-surface antigen heavy chain / Solute carrier family 3 member 2 N-terminus / : / Amino acid/polyamine transporter I / Amino acid permease / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain ... L-type amino acid transporter / Solute carrier family 3 member 2, N-terminal domain / 4F2 cell-surface antigen heavy chain / Solute carrier family 3 member 2 N-terminus / : / Amino acid/polyamine transporter I / Amino acid permease / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / Glycosyl hydrolase, all-beta / Glycoside hydrolase superfamily 類似検索 - ドメイン・相同性 TYROSINE / Amino acid transporter heavy chain SLC3A2 / Large neutral amino acids transporter small subunit 1 類似検索 - 構成要素生物種 Homo sapiens (ヒト)手法 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.2 Å 詳細データ登録者 Yan, R.H. / Li, Y.N. / Shi, T.H. 資金援助 中国, 1件 詳細 詳細を隠す組織 認可番号 国 National Natural Science Foundation of China (NSFC) 中国
引用ジャーナル : J Biol Chem / 年 : 2025タイトル : Structural insights into the substrate transport mechanism of the amino acid transporter complex.著者 : Haonan Yang / Tianhao Shi / Jing Dong / Ting Zhang / Yaning Li / Yingying Guo / Yafei Yuan / Liuqing Yang / Jin-Tang Dong / Renhong Yan / 要旨 : The -type amino acid transporter 1 (LAT1), in complex with its ancillary protein 4F2hc, mediates the sodium-independent antiport of large neutral amino acids across the plasma membrane. LAT1 ... The -type amino acid transporter 1 (LAT1), in complex with its ancillary protein 4F2hc, mediates the sodium-independent antiport of large neutral amino acids across the plasma membrane. LAT1 preferentially transports substrates, such as -leucine, -tyrosine, and -tryptophan, thyroid hormones, and drugs like 3,4-dihydroxyphenylalanine. Its pivotal role in cancer development and progression has established LAT1 as a promising therapeutic target. While prior studies have resolved the LAT1-4F2hc architecture and inhibitor interactions, the molecular basis of LAT1 substrate selectivity remains elusive. Here, we present the cryo-EM structures of LAT1-4F2hc bound to -tyrosine, -tryptophan, -leucine, and 3,4-dihydroxyphenylalanine, revealing distinct substrate binding modes. Comparative structural analysis highlights differences between LAT1 and LAT2 in substrate coordination, driven by key residues near the binding pocket that influence transport efficiency. These findings advance our mechanistic understanding of the LAT1-4F2hc complex and provide valuable insights for structure-based drug design targeting LAT1. 履歴 登録 2023年2月12日 登録サイト : PDBJ / 処理サイト : PDBJ改定 1.0 2024年7月10日 Provider : repository / タイプ : Initial release改定 2.0 2024年7月17日 Group : Atomic model / Author supporting evidence ... Atomic model / Author supporting evidence / Data collection / Derived calculations / Non-polymer description / Structure summary カテゴリ : atom_site / chem_comp ... atom_site / chem_comp / chem_comp_atom / chem_comp_bond / em_admin / entity / pdbx_branch_scheme / pdbx_entity_instance_feature / pdbx_entity_nonpoly / pdbx_entry_details / pdbx_nonpoly_scheme / pdbx_struct_assembly / pdbx_struct_assembly_gen / pdbx_struct_oper_list / struct_asym / struct_conn Item : _chem_comp.formula / _chem_comp.formula_weight ... _chem_comp.formula / _chem_comp.formula_weight / _chem_comp.id / _chem_comp.mon_nstd_flag / _chem_comp.name / _chem_comp.pdbx_synonyms / _chem_comp.type / _em_admin.last_update / _pdbx_branch_scheme.auth_asym_id / _pdbx_branch_scheme.pdb_asym_id / _pdbx_entry_details.has_ligand_of_interest / _pdbx_struct_assembly.details / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_struct_oper_list.symmetry_operation / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_label_asym_id 解説 : Atoms with unrealistic or zero occupancies / Provider : author / タイプ : Coordinate replacement改定 2.1 2024年10月30日 Group : Data collection / Structure summaryカテゴリ : em_admin / pdbx_entry_details / pdbx_modification_featureItem : _em_admin.last_update / _pdbx_entry_details.has_protein_modification改定 2.2 2025年11月26日 Group : Data collection / Database references / カテゴリ : citation / citation_author / em_adminItem : _citation.country / _citation.journal_abbrev ... _citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update
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