Structure of T4 Bacteriophage Clamp Loader Bound To Closed Clamp, DNA and ATP Analog and ADP
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| E [auth A] | SCOP2B Superfamily | Post-AAA+ oligomerization domain-like | 8092970 | 3000691 | SCOP2B (2022-06-29) |
| F [auth G] | SCOP2B Superfamily | DNA clamp | 8036422 | 3000780 | SCOP2B (2022-06-29) |
| F [auth G] | SCOP2B Superfamily | DNA clamp | 8036423 | 3000780 | SCOP2B (2022-06-29) |
| G [auth H] | SCOP2B Superfamily | DNA clamp | 8036422 | 3000780 | SCOP2B (2022-06-29) |
| G [auth H] | SCOP2B Superfamily | DNA clamp | 8036423 | 3000780 | SCOP2B (2022-06-29) |
| H [auth F] | SCOP2B Superfamily | DNA clamp | 8036423 | 3000780 | SCOP2B (2022-06-29) |
| H [auth F] | SCOP2B Superfamily | DNA clamp | 8036422 | 3000780 | SCOP2B (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A [auth B] | SBP_bac_1 | e3u61B1 | A: a/b three-layered sandwiches | X: amino-terminal domain of OmpATb | H: amino-terminal domain of OmpATb | T: amino-terminal domain of OmpATb | F: SBP_bac_1 | ECOD (v294.1) |
| A [auth B] | tRNA-synt_1_2 | e3u61B4 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: RIFT-related | T: acid protease | F: tRNA-synt_1_2 | ECOD (v294.1) |
| A [auth B] | Nup54_57_C | e3u61B2 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: SAM/DNA-glycosylase | T: SAM domain-like | F: Nup54_57_C | ECOD (v294.1) |
| B [auth C] | SBP_bac_1 | e3u61C2 | A: a/b three-layered sandwiches | X: amino-terminal domain of OmpATb | H: amino-terminal domain of OmpATb | T: amino-terminal domain of OmpATb | F: SBP_bac_1 | ECOD (v294.1) |
| B [auth C] | tRNA-synt_1_2 | e3u61C3 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: RIFT-related | T: acid protease | F: tRNA-synt_1_2 | ECOD (v294.1) |
| B [auth C] | Nup54_57_C | e3u61C4 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: SAM/DNA-glycosylase | T: SAM domain-like | F: Nup54_57_C | ECOD (v294.1) |
| C [auth D] | e3u61D2 | A: a/b three-layered sandwiches | X: Thioredoxin-like | H: Thioredoxin-like | T: Thioredoxin-like | F: | ECOD (v294.1) | |
| C [auth D] | tRNA-synt_1_2 | e3u61D4 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: RIFT-related | T: acid protease | F: tRNA-synt_1_2 | ECOD (v294.1) |
| C [auth D] | Nup54_57_C | e3u61D3 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: SAM/DNA-glycosylase | T: SAM domain-like | F: Nup54_57_C | ECOD (v294.1) |
| D [auth E] | NAGLU_N | e3u61E1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: SAM/DNA-glycosylase | T: SAM domain-like | F: NAGLU_N | ECOD (v294.1) |
| E [auth A] | Tae4 | e3u61A1 | A: a/b three-layered sandwiches | X: Family A G protein-coupled receptor-like | H: Family A G protein-coupled receptor-like | T: Family A G protein-coupled receptor-like | F: Tae4 | ECOD (v294.1) |
| F [auth G] | PUF | e3u61G1 | A: a/b three-layered sandwiches | X: Insertion subdomain in DsbA-like | H: Insertion subdomain in DsbA-like | T: Insertion subdomain in DsbA-like | F: PUF | ECOD (v294.1) |
| G [auth H] | PUF | e3u61H1 | A: a/b three-layered sandwiches | X: Insertion subdomain in DsbA-like | H: Insertion subdomain in DsbA-like | T: Insertion subdomain in DsbA-like | F: PUF | ECOD (v294.1) |
| H [auth F] | PUF | e3u61F1 | A: a/b three-layered sandwiches | X: Insertion subdomain in DsbA-like | H: Insertion subdomain in DsbA-like | T: Insertion subdomain in DsbA-like | F: PUF | ECOD (v294.1) |
Domain Annotation: CATH CATH Database Homepage
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| A [auth B], B [auth C], C [auth D], D [auth E] | PF21328 | Sliding-clamp-loader large subunit, AAA+ ATPase lid domain (Gp44_lid) | Sliding-clamp-loader large subunit, AAA+ ATPase lid domain | Sliding-clamp-loader large subunit (also known as Gp44) from Bacteriophage T4 forms the sliding-clamp-loader together with the small subunit. These are members of the AAA+ superfamily of ATPases which form pentameric complexes that load sliding DNA c ... | Domain |
| A [auth B], B [auth C], C [auth D], D [auth E] | PF21429 | Sliding-clamp-loader large subunit, C-terminal domain (Gp44_C) | Sliding-clamp-loader large subunit, C-terminal domain | This domain is found at the C-terminal end of Sliding-clamp-loader large subunit from Bacteriophage T4 (Gp44) and similar proteins predominantly found in tailed bacteriophages. Gp44 functions as an ATPase enzyme. It also contains an AAA module (Pfam: ... | Domain |
| A [auth B], B [auth C], C [auth D], D [auth E] | PF00004 | ATPase family associated with various cellular activities (AAA) (AAA) | ATPase family associated with various cellular activities (AAA) | AAA family proteins often perform chaperone-like functions that assist in the assembly, operation, or disassembly of protein complexes [2]. | Domain |
| E [auth A] | PF16790 | Bacteriophage clamp loader A subunit (Phage_clamp_A) | Bacteriophage clamp loader A subunit | This is the A subunit of bacteriophage DNA clamp loader required for loading of sliding clamps onto chromosomal DNA. These clamps are involved in processivity of DNA replication [1]. | Domain |
| F [auth G], G [auth H], H [auth F] | PF09116 | gp45 sliding clamp, C terminal (gp45-slide_C) | gp45 sliding clamp, C terminal | Members of this family are essential for the interaction of the gp45 sliding clamp with the corresponding polymerase. They adopt a DNA clamp fold, consisting of two alpha helices and two beta sheets - the fold is duplicated and has internal pseudo tw ... | Domain |
| F [auth G], G [auth H], H [auth F] | PF02916 | DNA polymerase processivity factor (DNA_PPF) | DNA polymerase processivity factor | Domain | |














