Annotations: 7X3K

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Ssz1_peptide-bd	e7x3kB2	A: beta sandwiches	X: Heat shock protein 70kD (HSP70), peptide-binding domain (From Topology)	H: Heat shock protein 70kD (HSP70), peptide-binding domain (From Topology)	T: Heat shock protein 70kD (HSP70), peptide-binding domain	F: Ssz1_peptide-bd	ECOD (1.6)
B	HSP70_1st	e7x3kB1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: HSP70_1st	ECOD (1.6)
B	MreB_Mbl_C	e7x3kB3	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: MreB_Mbl_C	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF00012	Hsp70 protein (HSP70)	Hsp70 protein	-	Family
A	PF00226	DnaJ domain (DnaJ)	DnaJ domain	DnaJ domains (J-domains) are associated with hsp70 heat-shock system and it is thought that this domain mediates the interaction. DnaJ-domain is therefore part of a chaperone (protein folding) system. The T-antigens, although not in Prosite are conf ...	DnaJ domains (J-domains) are associated with hsp70 heat-shock system and it is thought that this domain mediates the interaction. DnaJ-domain is therefore part of a chaperone (protein folding) system. The T-antigens, although not in Prosite are confirmed as DnaJ containing domains from literature [2].	Domain
A	PF21884	Zuotin-like, zuotin homology domain (ZUO1-like_ZHD)	Zuotin-like, zuotin homology domain	This domain is found in Zuotin from Saccharomyces cerevisiae (ZUO1) and in similar eukaryotic sequences. ZUO1 is a component of the ribosome-associated complex (RAC), a heterodimeric chaperone complex involved in regulation of accurate translation te ...	This domain is found in Zuotin from Saccharomyces cerevisiae (ZUO1) and in similar eukaryotic sequences. ZUO1 is a component of the ribosome-associated complex (RAC), a heterodimeric chaperone complex involved in regulation of accurate translation termination and in folding or maintaining nascent polypeptides in a folding-competent state. This entry represents its zuotin homology domain (ZHD), which is functionally important for association with ribosomes. It folds into four helices, including a three helix bundle [1]. It is normally found C-terminal to Pfam:PF00226.	Domain
A	PF26185	Zuotin N-terminal domain (Zuotin_N)	Zuotin N-terminal domain	This entry represents the N-terminal domain in Zuotin, found in fungi. Zuotin is a component of the ribosome-associated complex (RAC), which is a heterodimer of the Hsp70/DnaK-type chaperone SSZ1 and the Hsp40/DnaJ-type chaperone ZUO1. The RAC chaper ...	This entry represents the N-terminal domain in Zuotin, found in fungi. Zuotin is a component of the ribosome-associated complex (RAC), which is a heterodimer of the Hsp70/DnaK-type chaperone SSZ1 and the Hsp40/DnaJ-type chaperone ZUO1. The RAC chaperone complex plays a role in regulating accurate translation termination and in folding or maintaining nascent polypeptides in a folding-competent state. The ATPase activity of the ribosome-associated pool of Hsp70-type chaperones SSB1/SSB2, which bind to the nascent polypeptide chain, is stimulated by the RAC chaperone complex. Zuotin acts as a J-protein for SSB1/SSB2 only when it is associated with SSZ1. This domain is responsible for Zuotin's interaction with SSZ1. It contains a conserved LP-motif that binds to the SSZ1 C-terminal SBD beta-lid domain in the same way as canonical Hsp70s bind to their substrates [1-2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Ribosome-associated complex subunit SSZ1	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding unfolded protein binding protein binding pyrophosphatase activity ATP hydrolysis 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 ATP-dependent activity heat shock protein binding protein folding chaperone ATP-dependent protein folding chaperone	primary metabolic process gene expression macromolecule biosynthetic process protein maturation protein folding biosynthetic process 'de novo' cotranslational protein folding metabolic process cellular process protein metabolic process macromolecule metabolic process 'de novo' protein folding protein refolding biological regulation primary metabolic process gene expression macromolecule biosynthetic process protein maturation protein folding biosynthetic process 'de novo' cotranslational protein folding metabolic process cellular process protein metabolic process macromolecule metabolic process 'de novo' protein folding protein refolding biological regulation regulation of biological quality regulation of translational fidelity translation protein biosynthetic process cytoplasmic translation translational elongation translational frameshifting ribonucleoprotein complex biogenesis RNA metabolic process rRNA processing nucleobase-containing compound biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process cellular component biogenesis RNA biosynthetic process ribosome biogenesis nucleic acid biosynthetic process cellular component organization or biogenesis RNA processing rRNA metabolic process	protein-containing complex protein folding chaperone complex intracellular protein-containing complex cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane membrane-bounded organelle intracellular organelle organelle nucleus protein-containing complex protein folding chaperone complex intracellular protein-containing complex cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle
A	Zuotin	transcription coactivator activity transcription regulator activity transcription coregulator activity protein-macromolecule adaptor activity molecular adaptor activity protein binding binding Hsp70 protein binding protein-folding chaperone binding heat shock protein binding DNA binding nucleic acid binding ribonucleoprotein complex binding protein-containing complex binding transcription coactivator activity transcription regulator activity transcription coregulator activity protein-macromolecule adaptor activity molecular adaptor activity protein binding binding Hsp70 protein binding protein-folding chaperone binding heat shock protein binding DNA binding nucleic acid binding ribonucleoprotein complex binding protein-containing complex binding ribosome binding	primary metabolic process gene expression macromolecule biosynthetic process protein maturation protein folding biosynthetic process 'de novo' cotranslational protein folding metabolic process cellular process protein metabolic process macromolecule metabolic process 'de novo' protein folding biological regulation regulation of biological quality primary metabolic process gene expression macromolecule biosynthetic process protein maturation protein folding biosynthetic process 'de novo' cotranslational protein folding metabolic process cellular process protein metabolic process macromolecule metabolic process 'de novo' protein folding biological regulation regulation of biological quality regulation of translational fidelity establishment of organelle localization cellular localization ribonucleoprotein complex biogenesis nucleocytoplasmic transport transport nuclear transport ribosomal subunit export from nucleus intracellular transport establishment of localization cellular component biogenesis localization ribosome biogenesis organelle localization establishment of localization in cell cellular component organization or biogenesis nuclear export ribosome localization RNA metabolic process rRNA processing nucleobase-containing compound biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process RNA processing rRNA metabolic process translation protein biosynthetic process translational elongation translational frameshifting cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling signal transduction intracellular signal transduction cell communication	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membraneless organelle nucleolus intracellular organelle lumen organelle lumen membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membraneless organelle nucleolus intracellular organelle lumen organelle lumen membraneless organelle nuclear lumen cytosol ribosome protein-containing complex protein folding chaperone complex intracellular protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR029047	Heat shock protein 70kD, peptide-binding domain superfamily	Homologous Superfamily
B	IPR043129	ATPase, nucleotide binding domain	Homologous Superfamily
B	IPR013126	Heat shock protein 70 family	Family
A	IPR054076	Zuotin-like, zuotin homology domain	Domain
A	IPR001623	DnaJ domain	Domain
A	IPR058871	Zuotin, N-terminal domain	Domain
A	IPR018253	DnaJ domain, conserved site	Conserved Site
A	IPR032003	Ribosome-associated complex head domain	Domain
A	IPR036869	Chaperone J-domain superfamily	Homologous Superfamily
A	IPR044634	J-protein Zuotin/DnaJC2	Family
A	IPR042569	Ribosome-associated complex head domain superfamily	Homologous Superfamily

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.