GO_REF:0000002

Gene Ontology annotation through association of InterPro records with GO terms

InterPro2GO mapping methodology. Source of IEA annotations for CCT3 derived from its InterPro chaperonin (Cpn60/TCP-1) family/domain signatures and consistent with the AAA+/group II chaperonin architecture.

GO_REF:0000033

Annotation inferences using phylogenetic trees

PAINT/IBA methodology propagating experimental annotations through the PANTHER phylogenetic tree. Source of CCT3 IBA annotations to protein folding, unfolded protein binding, and chaperonin-containing T-complex membership, all consistent with conserved TRiC/CCT subunit function.

GO_REF:0000043

Gene Ontology annotation based on UniProtKB/Swiss-Prot keyword mapping

UniProt keyword-to-GO mapping methodology. Source of IEA ATP-binding/ chaperone keyword-derived annotations on CCT3, consistent with the Swiss-Prot annotation of CCT3 as an ATP-binding T-complex protein.

GO_REF:0000044

Gene Ontology annotation based on UniProtKB/Swiss-Prot Subcellular Location vocabulary mapping, accompanied by conservative changes to GO terms applied by UniProt

UniProt subcellular-location-to-GO mapping methodology. Source of the IEA cytoplasm/cytosol localization for CCT3, consistent with the experimentally established cytosolic localization of TRiC/CCT.

GO_REF:0000117

Electronic Gene Ontology annotations created by ARBA machine learning models

ARBA machine-learning rule mining methodology. Source of additional IEA molecular-function and biological-process annotations on CCT3 derived from UniProtKB feature evidence in the chaperonin family.

GO_REF:0000120

Combined Automated Annotation using Multiple IEA Methods

Combined automated annotation pipeline that aggregates multiple electronic GO assignment methods. Source of redundant IEA annotations on CCT3 that largely recapitulate the experimentally established chaperonin functions.

PMID:15704212

Physiological effects of unassembled chaperonin Cct subunits in the yeast Saccharomyces cerevisiae.

Yeast CCT is a double-ring complex with a stoichiometric set of eight distinct Cct subunits.

"Eukaryotic chaperonins, the Cct complexes, are assembled into two rings, each of which is composed of a stoichiometric array of eight different subunits"

PMID:16762366

Quantitative actin folding reactions using yeast CCT purified via an internal tag in the CCT3/gamma subunit.

Purified yeast CCT, tagged through CCT3, catalyzes ATP-dependent actin folding; this supports protein-folding and chaperonin activity annotations for CCT3 as a TRiC/CCT subunit.

"The eukaryotic cytosolic chaperonin CCT is an essential ATP-dependent protein folding machine whose action is required for folding the cytoskeletal proteins actin and tubulin"

PMID:19536198

An atlas of chaperone-protein interactions in Saccharomyces cerevisiae: implications to protein folding pathways in the cell.

The chaperone interactome study is useful context for CCT contacts but reports indirect TAP-tag interactions rather than a specific molecular activity.

"It should be emphasized that the interactions presented are indirect TAP-tag based interactions and not direct binary interactions."

PMID:37968396

The social and structural architecture of the yeast protein interactome.

Quantitative AP-MS interactome of yeast: the CCT chaperonin was recovered as the full 8-subunit ring by profile-correlation analysis (CCT is non-taggable), together with a discrete set of ~21 interactors including tubulin/actin-related folding substrates (Tub1, Tub3, Arp1) and two catalytic subunits of PP2A, supporting a restricted rather than broad CCT substrate spectrum.

"For some proteins—for example, the members of the chaperonin containing t-complex (CCT)—tagging is not possible because it interferes with protein stability or function [...] CCT was nevertheless fully recovered (Fig. 2d). Besides the 8 conserved, ring-forming members, we also detected a distinct set of 21 interacting proteins, about half of which were previously unreported. Two of these were catalytic subunits of protein phosphatase 2A, suggesting regulatory functions, and others, such as tubulin and actin-related proteins (Tub1, Tub3 and Arp1) were major known folding substrates."

file:yeast/CCT3/CCT3-deep-research-falcon.md

Falcon deep research report for CCT3

The Falcon report was reviewed and synthesized into the CCT3 curation, including core-function framing, family/PANTHER context, and evidence limitations.