4LSX

Plant steroid receptor ectodomain bound to brassinolide and SERK1 co-receptor ectodomain

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	LRR_8_2	e4lsxA1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_2	ECOD (1.6)
B	LRR_8_2	e4lsxB1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_2	ECOD (1.6)
C	LRR_8_2	e4lsxC1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_2	ECOD (1.6)
D	LRR_8_2	e4lsxD1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)
A	3.30.1490.310	Alpha Beta	2-Layer Sandwich	Dna Ligase	domain 1	CATH (4.3.0)
B	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)
B	3.30.1490.310	Alpha Beta	2-Layer Sandwich	Dna Ligase	domain 1	CATH (4.3.0)
C	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)
D	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF13855	Leucine rich repeat (LRR_8)	Leucine rich repeat	-	Repeat
A, B	PF08263	Leucine rich repeat N-terminal domain (LRRNT_2)	Leucine rich repeat N-terminal domain	-	Family
A, B	PF20141	Brassinosteroid receptor island domain (Island)	Brassinosteroid receptor island domain	The island domain in BRI1 corresponds to a large insertion in the regular repeat-structure between LRRs 21 and 22. The resulting 70-residue segment forms a small domain that folds back into the interior of the LRR superhelix, where it makes extensive ...	The island domain in BRI1 corresponds to a large insertion in the regular repeat-structure between LRRs 21 and 22. The resulting 70-residue segment forms a small domain that folds back into the interior of the LRR superhelix, where it makes extensive polar and hydrophobic interactions with LRRs 13-25. The domain fold is characterized by an anti-parallel beta-sheet, which is sandwiched between the LRR core and a 3-10 helix and stabilized by a disulphide bridge. The insertion of a folded domain into the LRR repeat has not been observed in other LRR receptor structures, and is probably an adaptation to the challenge of sensing a small steroid ligand (rather than larger ligands, such as proteins, nucleic acids, or lipids.	Domain
A, B	PF00560	Leucine Rich Repeat (LRR_1)	Leucine Rich Repeat	-	Repeat
C, D	PF00560	Leucine Rich Repeat (LRR_1)	Leucine Rich Repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Protein BRASSINOSTEROID INSENSITIVE 1	protein heterodimerization activity protein binding binding protein dimerization activity molecular transducer activity catalytic activity, acting on a protein kinase activity protein kinase activity signaling receptor activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein tyrosine kinase activity transmembrane receptor protein tyrosine kinase activity protein heterodimerization activity protein binding binding protein dimerization activity molecular transducer activity catalytic activity, acting on a protein kinase activity protein kinase activity signaling receptor activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein tyrosine kinase activity transmembrane receptor protein tyrosine kinase activity transmembrane receptor protein kinase activity transmembrane signaling receptor activity catalytic activity protein serine kinase activity adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding identical protein binding protein homodimerization activity protein serine/threonine kinase activity steroid binding lipid binding	chemical homeostasis homeostatic process brassinosteroid homeostasis lipid homeostasis cellular component organization microtubule bundle formation organelle organization microtubule cytoskeleton organization cellular process microtubule-based process cellular component organization or biogenesis cytoskeleton organization cellular response to stimulus regulation of cellular process chemical homeostasis homeostatic process brassinosteroid homeostasis lipid homeostasis cellular component organization microtubule bundle formation organelle organization microtubule cytoskeleton organization cellular process microtubule-based process cellular component organization or biogenesis cytoskeleton organization cellular response to stimulus regulation of cellular process response to lipid response to stimulus signaling hormone-mediated signaling pathway cell communication brassinosteroid mediated signaling pathway cellular response to endogenous stimulus response to hormone response to steroid hormone signal transduction response to organic cyclic compound cellular response to steroid hormone stimulus cellular response to hormone stimulus steroid hormone receptor signaling pathway regulation of biological process response to endogenous stimulus cellular response to brassinosteroid stimulus cellular response to organic cyclic compound biological regulation response to oxygen-containing compound cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical response to brassinosteroid cellular response to lipid response to light stimulus response to radiation response to abiotic stimulus response to UV response to UV-B developmental process multicellular organismal process cellular component assembly involved in morphogenesis cellular component biogenesis anatomical structure morphogenesis multicellular organism development cellular anatomical entity morphogenesis cellular component assembly gametophyte development pollen wall assembly pollen exine formation anatomical structure formation involved in morphogenesis anatomical structure development pollen development external encapsulating structure organization cellular developmental process anther morphogenesis reproductive process stamen morphogenesis anther wall tapetum cell differentiation developmental process involved in reproduction floral organ formation reproductive shoot system development cell differentiation anther development reproductive structure development post-embryonic development phyllome development system development androecium development plant organ development anther wall tapetum morphogenesis reproductive system development floral whorl development stamen development flower development post-embryonic plant organ morphogenesis post-embryonic plant morphogenesis plant organ morphogenesis anther wall tapetum development anther wall tapetum formation stamen formation post-embryonic plant organ development shoot system development plant organ formation floral organ morphogenesis floral organ development regulation of developmental process regulation of reproductive process positive regulation of biological process positive regulation of developmental process regulation of multicellular organismal process regulation of flower development positive regulation of reproductive process positive regulation of flower development regulation of multicellular organismal development regulation of shoot system development regulation of post-embryonic development positive regulation of multicellular organismal process positive regulation of post-embryonic development response to light intensity response to absence of light skotomorphogenesis leaf development detection of hormone stimulus detection of brassinosteroid stimulus detection of stimulus detection of chemical stimulus seedling development	cell periphery plasma membrane membrane cellular anatomical entity protein-containing complex membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cell periphery plasma membrane membrane cellular anatomical entity protein-containing complex membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle endosome membrane cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane organelle membrane
C, D	Somatic embryogenesis receptor kinase 1	protein binding binding signaling receptor binding molecular transducer activity catalytic activity, acting on a protein kinase activity protein kinase activity signaling receptor activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein tyrosine kinase activity transmembrane receptor protein tyrosine kinase activity transmembrane receptor protein kinase activity protein binding binding signaling receptor binding molecular transducer activity catalytic activity, acting on a protein kinase activity protein kinase activity signaling receptor activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein tyrosine kinase activity transmembrane receptor protein tyrosine kinase activity transmembrane receptor protein kinase activity transmembrane signaling receptor activity catalytic activity protein serine kinase activity adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding receptor serine/threonine kinase binding protein serine/threonine kinase activity transmembrane receptor protein serine/threonine kinase activity identical protein binding	cellular response to stimulus regulation of cellular process response to lipid response to stimulus signaling hormone-mediated signaling pathway cell communication brassinosteroid mediated signaling pathway cellular response to endogenous stimulus response to hormone response to steroid hormone signal transduction response to organic cyclic compound cellular response to steroid hormone stimulus cellular response to stimulus regulation of cellular process response to lipid response to stimulus signaling hormone-mediated signaling pathway cell communication brassinosteroid mediated signaling pathway cellular response to endogenous stimulus response to hormone response to steroid hormone signal transduction response to organic cyclic compound cellular response to steroid hormone stimulus cellular response to hormone stimulus steroid hormone receptor signaling pathway regulation of biological process response to endogenous stimulus cellular response to brassinosteroid stimulus cellular response to organic cyclic compound biological regulation response to oxygen-containing compound cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical response to brassinosteroid cellular response to lipid cellular process protein phosphorylation protein autophosphorylation phosphorylation cellular metabolic process primary metabolic process macromolecule modification phosphate-containing compound metabolic process metabolic process protein metabolic process macromolecule metabolic process protein modification process phosphorus metabolic process developmental process multicellular organismal process reproductive system development reproductive process embryo development developmental process involved in reproduction multicellular organism development fruit development embryo development ending in seed dormancy seed development anatomical structure development reproductive structure development post-embryonic development system development gametophyte development pollen maturation developmental maturation pollen development plant organ development abscission flower development reproductive shoot system development shoot system development floral organ abscission floral organ development cellular component organization organelle organization cellular component organization or biogenesis Golgi organization endomembrane system organization sexual reproduction cellular developmental process meiotic cell cycle meiotic cell cycle process microsporogenesis sexual sporulation cell cycle sporulation plant-type sporogenesis cell cycle process	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle cell periphery plasma membrane membrane protein-containing complex organelle subcompartment endomembrane system membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle cell periphery plasma membrane membrane protein-containing complex organelle subcompartment endomembrane system endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum organelle membrane endoplasmic reticulum membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR017441	Protein kinase, ATP binding site	Binding Site
A, B	IPR051809	Plant receptor-like serine/threonine-protein kinase	Family
A, B	IPR013210	Leucine-rich repeat-containing N-terminal, plant-type	Domain
A, B	IPR003591	Leucine-rich repeat, typical subtype	Repeat
A, B	IPR000719	Protein kinase domain	Domain
A, B	IPR045381	Brassinosteroid receptor BRI1, island domain	Domain
A, B	IPR001611	Leucine-rich repeat	Repeat
A, B	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
A, B	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily
A, B	IPR008271	Serine/threonine-protein kinase, active site	Active Site
C, D	IPR017441	Protein kinase, ATP binding site	Binding Site
C, D	IPR013210	Leucine-rich repeat-containing N-terminal, plant-type	Domain
C, D	IPR000719	Protein kinase domain	Domain
C, D	IPR001245	Serine-threonine/tyrosine-protein kinase, catalytic domain	Domain
C, D	IPR001611	Leucine-rich repeat	Repeat
C, D	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
C, D	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily
C, D	IPR008271	Serine/threonine-protein kinase, active site	Active Site

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.