7Y9U | pdb_00007y9u

Structure of the auxin exporter PIN1 in Arabidopsis thaliana in the NPA-bound state

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C [auth D]	Beta-prism_lec	e7y9uD1	A: a/b three-layered sandwiches	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Beta-prism_lec	ECOD (v294.1)
B [auth C]	Beta-prism_lec	e7y9uC1	A: a/b three-layered sandwiches	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Beta-prism_lec	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth D]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B [auth C]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth C], C [auth D]	Heavy Chain	IGHV1	-	auxin efflux carrier component 1	SAbDab (2026-03-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D [auth B]	PF03547	Membrane transport protein (Mem_trans)	Membrane transport protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth C], C [auth D]	nanobody	-	-	-
A, D [auth B]	Auxin efflux carrier component 1	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity auxin transmembrane transporter activity auxin efflux transmembrane transporter activity transporter activity transmembrane transporter activity	developmental process multicellular organism development multicellular organismal process anatomical structure development shoot system development system development xylem and phloem pattern formation pattern specification process regionalization response to light stimulus response to stimulus response to red or far red light photomorphogenesis response to radiation developmental process multicellular organism development multicellular organismal process anatomical structure development shoot system development system development xylem and phloem pattern formation pattern specification process regionalization response to light stimulus response to stimulus response to red or far red light photomorphogenesis response to radiation response to abiotic stimulus post-embryonic development cellular response to stimulus auxin-activated signaling pathway regulation of cellular process transport signaling regulation of signal transduction export across plasma membrane hormone-mediated signaling pathway cellular response to auxin stimulus cell communication response to auxin localization cellular response to endogenous stimulus response to hormone regulation of biological quality signal transduction auxin export across the plasma membrane cellular response to hormone stimulus regulation of biological process regulation of signaling regulation of auxin mediated signaling pathway regulation of hormone levels response to endogenous stimulus biological regulation export from cell establishment of localization transmembrane transport cellular response to chemical stimulus regulation of response to stimulus response to chemical auxin transport hormone transport regulation of cell communication cellular process plant organ development leaf morphogenesis shoot system morphogenesis plant organ morphogenesis anatomical structure morphogenesis leaf shaping leaf development anatomical structure arrangement phyllome development reproductive process embryo development developmental process involved in reproduction fruit development embryo development ending in seed dormancy seed development cotyledon development reproductive structure development cotyledon morphogenesis reproductive system development embryonic morphogenesis post-embryonic plant morphogenesis root development root system development tropism response to external stimulus gravitropism response to gravity leaf formation anatomical structure formation involved in morphogenesis plant organ formation regeneration somatic embryogenesis flower development reproductive shoot system development inflorescence development adventitious root development auxin polar transport	cellular anatomical structure apical part of cell cell periphery membrane plasma membrane plasma membrane region apical plasma membrane basal part of cell basal plasma membrane intracellular anatomical structure cytoplasm external encapsulating structure plant-type cell wall cell wall cellular anatomical structure apical part of cell cell periphery membrane plasma membrane plasma membrane region apical plasma membrane basal part of cell basal plasma membrane intracellular anatomical structure cytoplasm external encapsulating structure plant-type cell wall cell wall membrane-bounded organelle intracellular organelle organelle ER body intracellular membrane-bounded organelle cell-cell junction symplast anchoring junction cell junction plasmodesma endoplasmic reticulum endomembrane system

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D [auth B]	IPR051107	Auxin Efflux Carrier	Family
A, D [auth B]	IPR014024	Auxin efflux carrier, plant type	Family
A, D [auth B]	IPR004776	Membrane transport PIN-like	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, D [auth B]	OPM	Transmembrane	Alpha-helical polytopic	Monovalent cation-proton antiporter	Auxin efflux carrier

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, D [auth B]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, D [auth B]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	PIN-FORMED (PIN) Auxin Efflux Carriers and Related Proteins	PIN1 auxin exporter, apo state

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

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