Annotations: 5HX2

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	Baseplate structural protein gp8	8033088	3002009	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Baseplate structural protein gp8	8033088	3002009	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)
I	T4_gp9_10_N	e5hx2I1	A: beta sandwiches	X: gp9 N-terminal domain-like	H: gp9 N-terminal domain-related (From Topology)	T: gp9 N-terminal domain-related	F: T4_gp9_10_N	ECOD (1.6)
I	10_2nd	e5hx2I2	A: a+b duplicates or obligate multimers	X: gp11/gp12 receptor-binding domain (From Topology)	H: gp11/gp12 receptor-binding domain (From Topology)	T: gp11/gp12 receptor-binding domain	F: 10_2nd	ECOD (1.6)
H	T4_gp9_10_N	e5hx2H2	A: beta sandwiches	X: gp9 N-terminal domain-like	H: gp9 N-terminal domain-related (From Topology)	T: gp9 N-terminal domain-related	F: T4_gp9_10_N	ECOD (1.6)
H	10_2nd	e5hx2H1	A: a+b duplicates or obligate multimers	X: gp11/gp12 receptor-binding domain (From Topology)	H: gp11/gp12 receptor-binding domain (From Topology)	T: gp11/gp12 receptor-binding domain	F: 10_2nd	ECOD (1.6)
G	T4_gp9_10_N	e5hx2G1	A: beta sandwiches	X: gp9 N-terminal domain-like	H: gp9 N-terminal domain-related (From Topology)	T: gp9 N-terminal domain-related	F: T4_gp9_10_N	ECOD (1.6)
G	10_2nd	e5hx2G2	A: a+b duplicates or obligate multimers	X: gp11/gp12 receptor-binding domain (From Topology)	H: gp11/gp12 receptor-binding domain (From Topology)	T: gp11/gp12 receptor-binding domain	F: 10_2nd	ECOD (1.6)
F	Phage_gp53	e5hx2F1	A: alpha arrays	X: HTH	H: LysM domain (From Topology)	T: LysM domain	F: Phage_gp53	ECOD (1.6)
E	6_2nd	e5hx2E4	A: beta barrels	X: cradle loop barrel	H: Baseplate wedge protein gp6 domain I (From Topology)	T: Baseplate wedge protein gp6 domain I	F: 6_2nd	ECOD (1.6)
E	6_3rd	e5hx2E2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Baseplate wedge protein gp6 Ig-like domain (From Topology)	T: Baseplate wedge protein gp6 Ig-like domain	F: 6_3rd	ECOD (1.6)
E	6_6th	e5hx2E5	A: beta sandwiches	X: Baseplate structural protein gp6 C-terminal domain II (From Topology)	H: Baseplate structural protein gp6 C-terminal domain II (From Topology)	T: Baseplate structural protein gp6 C-terminal domain II	F: 6_6th	ECOD (1.6)
E	6_1st	e5hx2E1	A: alpha duplicates or obligate multimers	X: Baseplate wedge protein gp7 helical domain-like	H: Baseplate wedge protein gp6 helical domain (From Topology)	T: Baseplate wedge protein gp6 helical domain	F: 6_1st	ECOD (1.6)
E	6_4th	e5hx2E6	A: a+b two layers	X: Alpha-lytic protease prodomain-like	H: Baseplate structural protein gp6 C-terminal domain I (From Topology)	T: Baseplate structural protein gp6 C-terminal domain I	F: 6_4th	ECOD (1.6)
E	6_5th	e5hx2E3	A: a+b two layers	X: Baseplate structural protein gp6 C-terminal domain III (From Topology)	H: Baseplate structural protein gp6 C-terminal domain III (From Topology)	T: Baseplate structural protein gp6 C-terminal domain III	F: 6_5th	ECOD (1.6)
D	6_2nd	e5hx2D1	A: beta barrels	X: cradle loop barrel	H: Baseplate wedge protein gp6 domain I (From Topology)	T: Baseplate wedge protein gp6 domain I	F: 6_2nd	ECOD (1.6)
D	6_3rd	e5hx2D2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Baseplate wedge protein gp6 Ig-like domain (From Topology)	T: Baseplate wedge protein gp6 Ig-like domain	F: 6_3rd	ECOD (1.6)
D	6_6th	e5hx2D6	A: beta sandwiches	X: Baseplate structural protein gp6 C-terminal domain II (From Topology)	H: Baseplate structural protein gp6 C-terminal domain II (From Topology)	T: Baseplate structural protein gp6 C-terminal domain II	F: 6_6th	ECOD (1.6)
D	6_1st	e5hx2D4	A: alpha duplicates or obligate multimers	X: Baseplate wedge protein gp7 helical domain-like	H: Baseplate wedge protein gp6 helical domain (From Topology)	T: Baseplate wedge protein gp6 helical domain	F: 6_1st	ECOD (1.6)
D	6_4th	e5hx2D5	A: a+b two layers	X: Alpha-lytic protease prodomain-like	H: Baseplate structural protein gp6 C-terminal domain I (From Topology)	T: Baseplate structural protein gp6 C-terminal domain I	F: 6_4th	ECOD (1.6)
D	6_5th	e5hx2D3	A: a+b two layers	X: Baseplate structural protein gp6 C-terminal domain III (From Topology)	H: Baseplate structural protein gp6 C-terminal domain III (From Topology)	T: Baseplate structural protein gp6 C-terminal domain III	F: 6_5th	ECOD (1.6)
C	Phage-Gp8	e5hx2C2	A: beta barrels	X: SH3	H: Insertion domain of baseplate gp8 (From Topology)	T: Insertion domain of baseplate gp8	F: Phage-Gp8	ECOD (1.6)
C	Phage-Gp8	e5hx2C1	A: beta complex topology	X: Baseplate structural protein gp8 (From Topology)	H: Baseplate structural protein gp8 (From Topology)	T: Baseplate structural protein gp8	F: Phage-Gp8	ECOD (1.6)
B	Phage-Gp8	e5hx2B1	A: beta barrels	X: SH3	H: Insertion domain of baseplate gp8 (From Topology)	T: Insertion domain of baseplate gp8	F: Phage-Gp8	ECOD (1.6)
B	Phage-Gp8	e5hx2B2	A: beta complex topology	X: Baseplate structural protein gp8 (From Topology)	H: Baseplate structural protein gp8 (From Topology)	T: Baseplate structural protein gp8	F: Phage-Gp8	ECOD (1.6)
A	7_5th	e5hx2A5	A: beta barrels	X: cradle loop barrel	H: Baseplate wedge protein gp7 domain V (From Topology)	T: Baseplate wedge protein gp7 domain V	F: 7_5th	ECOD (1.6)
A	fn3_6	e5hx2A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: fn3_6	ECOD (1.6)
A	7_1st	e5hx2A3	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 6-bladed	F: 7_1st	ECOD (1.6)
A	7_4th	e5hx2A4	A: alpha arrays	X: HhH/H2TH	H: Baseplate wedge protein gp7 domain IV (From Topology)	T: Baseplate wedge protein gp7 domain IV	F: 7_4th	ECOD (1.6)
A	7_3rd	e5hx2A7	A: alpha duplicates or obligate multimers	X: Baseplate wedge protein gp7 helical domain-like	H: Baseplate wedge protein gp7 helical domain (From Topology)	T: Baseplate wedge protein gp7 helical domain	F: 7_3rd	ECOD (1.6)
A	7_2nd	e5hx2A2	A: a+b complex topology	X: Baseplate wedge protein gp7 domain II (From Topology)	H: Baseplate wedge protein gp7 domain II (From Topology)	T: Baseplate wedge protein gp7 domain II	F: 7_2nd	ECOD (1.6)
A	7_6th	e5hx2A6	A: extended segments	X: Baseplate wedge protein gp7 domain VI (From Topology)	H: Baseplate wedge protein gp7 domain VI (From Topology)	T: Baseplate wedge protein gp7 domain VI	F: 7_6th	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
E	3.30.300.200	Alpha Beta	2-Layer Sandwich	GMP Synthetase	Chain A, domain 3	CATH (4.3.0)
D	3.30.300.200	Alpha Beta	2-Layer Sandwich	GMP Synthetase	Chain A, domain 3	CATH (utative)
C	2.60.340.10	Mainly Beta	Sandwich	baseplate structural protein gp8, domain 1	baseplate structural protein gp8, domain 1	CATH (4.3.0)
C	2.170.290.10	Mainly Beta	Beta Complex	baseplate structural protein gp8, domain 2	baseplate structural protein gp8, domain 2	CATH (4.3.0)
B	2.60.340.10	Mainly Beta	Sandwich	baseplate structural protein gp8, domain 1	baseplate structural protein gp8, domain 1	CATH (4.3.0)
B	2.170.290.10	Mainly Beta	Beta Complex	baseplate structural protein gp8, domain 2	baseplate structural protein gp8, domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
G, H, I	PF07880	Bacteriophage T4 gp9/10-like protein, N-terminal (T4_gp9_10_N)	Bacteriophage T4 gp9/10-like protein, N-terminal	This entry represents the N-terminal domain of Baseplate protein gp9 from Bacteriophage T4, a component of the viral baseplate [1]. Gp9 connects the long tail fibres of the virus to the baseplate and triggers tail contraction after viral attachment t ...	This entry represents the N-terminal domain of Baseplate protein gp9 from Bacteriophage T4, a component of the viral baseplate [1]. Gp9 connects the long tail fibres of the virus to the baseplate and triggers tail contraction after viral attachment to a host cell. The protein is active as a trimer, with each monomer being composed of three domains. The N-terminal domain consists of an extended polypeptide chain and two alpha helices. The alpha1 helix from each of the three monomers in the trimer interacts with its counterparts to form a coiled-coil structure. The middle domain is a seven-stranded beta-sandwich. This entry represents the region including these two domains. Noticeably, the long flexible region between N-terminal and middle domains may be required for the function of gp9 to transmit signals from the long tail fibres [2]. Together with gp11, gp10 initiates the assembly of wedges that then go on to associate with a hub to form the viral baseplate [1].	Domain
G, H, I	PF21939	Baseplate structural protein Gp10, C-terminal domain (Gp10_C)	Baseplate structural protein Gp10, C-terminal domain	This entry represents the C-terminal domain (CTD) of baseplate structural protein Gp10 that assembles into trimeric structures. The core structure and assembly of Gp10 has structural similarity to that of the head domain of Gp11 and the receptor bind ...	This entry represents the C-terminal domain (CTD) of baseplate structural protein Gp10 that assembles into trimeric structures. The core structure and assembly of Gp10 has structural similarity to that of the head domain of Gp11 and the receptor binding domain of Gp12 [1]. The monomeric CTD of Gp10 consists of an alpha-helix followed by a three-stranded, antiparallel beta-sheet, which is almost perpendicular to the helix. The three symmetry related beta-sheets interact with their first beta-strands in the trimer, thus creating a flower-like arrangement with the alpha-helices being the flower stem and the three beta-sheets being the petals.	Domain
F	PF11246	Base plate wedge protein 53 (Phage_gp53)	Base plate wedge protein 53	-	Family
D, E	PF21871	Baseplate structural protein gp6, C-terminal domain III (Gp6_C-III)	Baseplate structural protein gp6, C-terminal domain III	Baseplate structural protein gp6 is located next to the tail tube and is an intermediate (or inner) baseplate protein involved in tail assembly. Two molecules of gp6 form a complex with gp25 and gp7 which is involved sheath contraction [1-3]. This do ...	Baseplate structural protein gp6 is located next to the tail tube and is an intermediate (or inner) baseplate protein involved in tail assembly. Two molecules of gp6 form a complex with gp25 and gp7 which is involved sheath contraction [1-3]. This domain has been described as C-terminal domain III.	Domain
D, E	PF21387	Baseplate structural protein gp6, C-terminal domain I (Gp6_C-I)	Baseplate structural protein gp6, C-terminal domain I	Baseplate structural protein gp6 is located next to the tail tube and is an intermediate (or inner) baseplate protein involved in tail assembly. Two molecules of gp6 form a complex with gp25 and gp7 which is involved sheath contraction [1-3]. This do ...	Baseplate structural protein gp6 is located next to the tail tube and is an intermediate (or inner) baseplate protein involved in tail assembly. Two molecules of gp6 form a complex with gp25 and gp7 which is involved sheath contraction [1-3]. This domain has been described as C-terminal domain I, and adopts a 2-layer beta-sandwich fold.	Domain
D, E	PF21472	Baseplate structural protein gp6, C-terminal domain II (gp6_C-domII)	Baseplate structural protein gp6, C-terminal domain II	This entry represents domain II found in the C-terminal of gp6 from bacteriophage T4, which adopts a beta-barrel fold. This protein is involved in tail assembly. It forms the gp25-(gp6)2-gp7 module, involved in sheath contraction [1,2].	Domain
D, E	PF21515	Baseplate wedge protein gp6, domain II (Gp6_2nd)	Baseplate wedge protein gp6, domain II	This domain is found in Baseplate wedge protein gp6 from Enterobacteria phage T4 and similar sequences predominantly from tailed bacteriophages. Gp6 is a protein involved in tail assembly. This entry represents the first part of Domain II [1].	Domain
D, E	PF21379	Baseplate wedge protein gp6-like, helical domain (Gp6-like_1st)	Baseplate wedge protein gp6-like, helical domain	This domain is found in Baseplate wedge protein gp6 from Enterobacteria phage T4 and similar sequences predominantly from tailed bacteriophages. Gp6 is a protein involved in tail assembly. This entry represents its N-terminal helical domain [1].	Domain
B, C	PF09215	Bacteriophage T4, Gp8 (Phage-Gp8)	Bacteriophage T4, Gp8	Members of this family of viral baseplate structural proteins adopt a structure consisting of a three-layer beta-sandwich with two finger-like loops containing an alpha-helix at the opposite sides of the sandwich. The two peripheral, five-stranded, a ...	Members of this family of viral baseplate structural proteins adopt a structure consisting of a three-layer beta-sandwich with two finger-like loops containing an alpha-helix at the opposite sides of the sandwich. The two peripheral, five-stranded, antiparallel beta-sheets are stacked against the middle, four-stranded, antiparallel beta-sheet. Attachment of this family of proteins to the baseplate during assembly creates a binding site for subsequent attachment of Gp6 [1].	Domain
A	PF21428	Baseplate wedge protein gp7, helical domain (Gp7_helical)	Baseplate wedge protein gp7, helical domain	This domain is found in Baseplate wedge protein gp7 from Bacteriophage T4 and similar proteins predominantly found in tailed bacteriophages. Gp7 provides the primary control of the conformational changes of the viral baseplate during assembly and inf ...	This domain is found in Baseplate wedge protein gp7 from Bacteriophage T4 and similar proteins predominantly found in tailed bacteriophages. Gp7 provides the primary control of the conformational changes of the viral baseplate during assembly and infection. This protein is organised into six domains connected by flexible linkers. This entry represents helix-turn-helix motif that is part of the long linker connecting the second and fourth domains [1].	Domain
A	PF21427	Baseplate wedge protein gp7, domain V (Gp7_5th)	Baseplate wedge protein gp7, domain V	This domain is found in Baseplate wedge protein gp7 from Bacteriophage T4 and similar proteins predominantly found in tailed bacteriophages. Gp7 provides the primary control of the conformational changes of the viral baseplate during assembly and inf ...	This domain is found in Baseplate wedge protein gp7 from Bacteriophage T4 and similar proteins predominantly found in tailed bacteriophages. Gp7 provides the primary control of the conformational changes of the viral baseplate during assembly and infection. This protein is organised into six domains connected by flexible linkers. This entry represents Domain V, which is an insertion into domain IV and consists of an eight-stranded beta- barrel followed by two short alpha-helices [1].	Domain
A	PF21456	Baseplate wedge protein gp7, domain VI (Gp7_6th)	Baseplate wedge protein gp7, domain VI	This domain is found in Baseplate wedge protein gp7 from Bacteriophage T4 and similar proteins predominantly found in tailed bacteriophages. Gp7 provides the primary control of the conformational changes of the viral baseplate during assembly and inf ...	This domain is found in Baseplate wedge protein gp7 from Bacteriophage T4 and similar proteins predominantly found in tailed bacteriophages. Gp7 provides the primary control of the conformational changes of the viral baseplate during assembly and infection. This protein is organised into six domains connected by flexible linkers. This entry represents Domain VI, which forms a ribbon-like structure that interacts with N-terminal region of the protein Gp10 [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
G, H, I	Baseplate wedge protein gp10	-	exit from host cell biological process involved in interspecies interaction between organisms viral process viral release from host cell viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion assembly viral tail assembly	virus tail virion component virus tail, baseplate
F	Baseplate wedge protein gp53	-	virion assembly viral tail assembly viral process viral life cycle	virus tail virion component virus tail, baseplate
D, E	Baseplate wedge protein gp6	identical protein binding protein binding binding	virion assembly viral tail assembly viral process viral life cycle	virus tail virion component virus tail, baseplate
B, C	Baseplate wedge protein gp8	-	virion assembly viral tail assembly viral process viral life cycle	virus tail virion component virus tail, baseplate
A	Baseplate wedge protein gp7	-	virion assembly viral tail assembly viral process viral life cycle	virus tail virion component virus tail, baseplate

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
G, H, I	IPR036240	Gp9-like superfamily	Homologous Superfamily
G, H, I	IPR008987	Baseplate structural protein Gp9/Gp10, N-terminal domain	Domain
G, H, I	IPR054430	Baseplate wedge protein gp10, domain 3	Domain
G, H, I	IPR056391	Baseplate protein gp9-like, C-terminal	Domain
G, H, I	IPR053827	Baseplate structural protein Gp10, C-terminal domain	Domain
G, H, I	IPR027411	Baseplate structural protein Gp9/Gp10 middle domain superfamily	Homologous Superfamily
G, H, I	IPR034695	Baseplate wedge protein gp10	Family
F	IPR022607	Baseplate wedge protein gp53, bacteriophage T4	Family
D, E	IPR054065	Baseplate wedge protein gp6, C-terminal domain III	Domain
D, E	IPR034698	Baseplate wedge protein gp6	Family
D, E	IPR049027	Baseplate structural protein gp6, C-terminal domain I	Domain
D, E	IPR049026	Baseplate wedge protein gp6-like, N-terminal helical domain	Domain
D, E	IPR049028	Baseplate structural protein gp6, C-terminal domain II	Domain
D, E	IPR049029	Baseplate wedge protein gp6, domain II, first	Domain
B, C	IPR036327	Bacteriophage T4, Gp8 superfamily	Homologous Superfamily
B, C	IPR015298	Bacteriophage T4, Gp8	Domain
A	IPR034697	Baseplate wedge protein gp7	Family
A	IPR048812	Baseplate wedge protein gp7, domain VI	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR048810	Baseplate wedge protein gp7, helical domain	Domain
A	IPR003961	Fibronectin type III	Domain
A	IPR048811	Baseplate wedge protein gp7, domain V	Domain
A	IPR036116	Fibronectin type III superfamily	Homologous Superfamily