6IAN | pdb_00006ian

T. brucei IFT22/74/81 GTP-bound crystal structure

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)
E	Ras	e6ianE1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Ras	ECOD (1.6)
B [auth C]	EUF08071	e6ianC1	A: alpha bundles	X: CH domain-like	H: Calponin-homology domain-like (From Topology)	T: Calponin-homology domain-like	F: EUF08071	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth C]	1.10.418.70	Mainly Alpha	Orthogonal Bundle	Actin-binding Protein, T-fimbrin	domain 1	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E	PF08477	Ras of Complex, Roc, domain of DAPkinase (Roc)	Ras of Complex, Roc, domain of DAPkinase	Roc, or Ras of Complex, proteins are mitochondrial Rho proteins (Miro-1, Swiss:Q8IXI2, and Miro-2, Swiss:Q8IXI1) and atypical Rho GTPases. Full-length proteins have a unique domain organisation, with tandem GTP-binding domains and two EF hand domains ...	Roc, or Ras of Complex, proteins are mitochondrial Rho proteins (Miro-1, Swiss:Q8IXI2, and Miro-2, Swiss:Q8IXI1) and atypical Rho GTPases. Full-length proteins have a unique domain organisation, with tandem GTP-binding domains and two EF hand domains (Pfam:PF00036) that may bind calcium. They are also larger than classical small GTPases. It has been proposed that they are involved in mitochondrial homeostasis and apoptosis [1,2,3,4].	Domain
B [auth C], D	PF18383	Intraflagellar transport 81 calponin homology domain (IFT81_CH)	Intraflagellar transport 81 calponin homology domain	This is the N-terminal domain found in IFT81 proteins. Crystal structure analysis revealed that IFT81-N adopts the fold of a calponin homology (CH) domain with structural similarity to the kinetochore complex component NDC80 with microtubule (MT)-bin ...	This is the N-terminal domain found in IFT81 proteins. Crystal structure analysis revealed that IFT81-N adopts the fold of a calponin homology (CH) domain with structural similarity to the kinetochore complex component NDC80 with microtubule (MT)-binding properties. Functional analysis show that IFT74 and IFT81 form a tubulin-binding module required for ciliogenesis. It is suggested that IFT81-N binds the globular domain of tubulin to provide specificity, and IFT74-N recognizes the beta-tubulin tail to increase affinity [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E	Rab-like 5	binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity	cellular localization establishment of protein localization nitrogen compound transport transport intracellular transport establishment of localization localization protein transport establishment of localization in cell macromolecule localization cellular process intracellular protein localization intracellular protein transport organelle assembly cellular localization establishment of protein localization nitrogen compound transport transport intracellular transport establishment of localization localization protein transport establishment of localization in cell macromolecule localization cellular process intracellular protein localization intracellular protein transport organelle assembly plasma membrane bounded cell projection organization cell projection organization plasma membrane bounded cell projection assembly cellular component biogenesis cellular component organization organelle organization cellular component assembly cilium assembly cellular component organization or biogenesis cilium organization cell projection assembly	cellular anatomical structure endomembrane system membrane-bounded organelle cell projection organelle cilium plasma membrane bounded cell projection intracellular anatomical structure cytoplasm motile cilium intracellular membraneless organelle intracellular organelle ciliary basal body microtubule organizing center cellular anatomical structure endomembrane system membrane-bounded organelle cell projection organelle cilium plasma membrane bounded cell projection intracellular anatomical structure cytoplasm motile cilium intracellular membraneless organelle intracellular organelle ciliary basal body microtubule organizing center cytoskeleton membraneless organelle microtubule cytoskeleton intraciliary transport particle B protein-containing complex intraciliary transport particle
B [auth C], D	Intraflagellar transport protein 81	cytoskeletal protein binding protein binding binding tubulin binding	cellular localization plasma membrane bounded cell projection organization cell projection organization transport intracellular transport establishment of localization cellular component organization localization organelle organization establishment of localization in cell microtubule-based transport cellular process transport along microtubule cytoskeleton-dependent intracellular transport cellular localization plasma membrane bounded cell projection organization cell projection organization transport intracellular transport establishment of localization cellular component organization localization organelle organization establishment of localization in cell microtubule-based transport cellular process transport along microtubule cytoskeleton-dependent intracellular transport microtubule-based movement microtubule-based process cellular component organization or biogenesis cilium organization intraciliary transport intraciliary retrograde transport organelle assembly plasma membrane bounded cell projection assembly cellular component biogenesis cellular component assembly cilium assembly cell projection assembly	membrane-bounded organelle cell projection cellular anatomical structure organelle cilium plasma membrane bounded cell projection protein-containing complex intraciliary transport particle intracellular anatomical structure intracellular membraneless organelle intracellular organelle ciliary basal body microtubule organizing center cytoskeleton membrane-bounded organelle cell projection cellular anatomical structure organelle cilium plasma membrane bounded cell projection protein-containing complex intraciliary transport particle intracellular anatomical structure intracellular membraneless organelle intracellular organelle ciliary basal body microtubule organizing center cytoskeleton membraneless organelle microtubule cytoskeleton intraciliary transport particle B
A, C [auth B]	Intraflagellar transport protein 74	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity cytoskeletal protein binding beta-tubulin binding protein binding binding tubulin binding	ribose phosphate metabolic process ATP metabolic process ATP biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process proton motive force-driven ATP synthesis nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribonucleotide metabolic process purine nucleoside triphosphate biosynthetic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process ribose phosphate metabolic process ATP metabolic process ATP biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process proton motive force-driven ATP synthesis nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribonucleotide metabolic process purine nucleoside triphosphate biosynthetic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process purine ribonucleoside triphosphate metabolic process phosphate-containing compound metabolic process small molecule metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process purine nucleoside triphosphate metabolic process nucleoside triphosphate biosynthetic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process ribonucleoside triphosphate biosynthetic process purine-containing compound metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process metabolic process cellular process nucleoside triphosphate metabolic process purine ribonucleotide metabolic process purine nucleotide biosynthetic process cellular localization cell projection organization transport plasma membrane bounded cell projection assembly cellular component organization cellular component biogenesis localization cellular component assembly establishment of localization in cell cilium assembly transport along microtubule cellular component organization or biogenesis cilium organization intraciliary transport plasma membrane bounded cell projection organization organelle assembly intraciliary transport involved in cilium assembly intracellular transport establishment of localization organelle organization microtubule-based transport cytoskeleton-dependent intracellular transport microtubule-based movement microtubule-based process cell projection assembly	membrane-bounded organelle cell projection cellular anatomical structure organelle cilium plasma membrane bounded cell projection protein-containing complex intraciliary transport particle intracellular anatomical structure cytoplasm respiratory chain complex catalytic complex proton-transporting ATP synthase complex membrane membrane-bounded organelle cell projection cellular anatomical structure organelle cilium plasma membrane bounded cell projection protein-containing complex intraciliary transport particle intracellular anatomical structure cytoplasm respiratory chain complex catalytic complex proton-transporting ATP synthase complex membrane membrane protein complex cation channel complex transporter complex proton-transporting two-sector ATPase complex transmembrane transporter complex monoatomic ion channel complex intraciliary transport particle B

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B [auth C], D	IPR043016	IFT81, N-terminal domain superfamily	Homologous Superfamily
B [auth C], D	IPR041146	IFT81, calponin homology domain	Domain
B [auth C], D	IPR013087	Zinc finger C2H2-type	Domain
B [auth C], D	IPR029600	Intraflagellar transport protein 81	Family
A, C [auth B]	IPR036228	ATP synthase, F0 complex, subunit D superfamily, mitochondrial	Homologous Superfamily
A, C [auth B]	IPR029602	Intraflagellar transport protein 74	Family

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.