2FL8 | pdb_00002fl8

Fitting of the gp10 trimer structure into the cryoEM map of the bacteriophage T4 baseplate in the hexagonal conformation.

External Resource: Annotation

Domain Annotation: ECOD Classification
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)
R	Kunitz_BPTI	e2fl8R2	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
Q	Kunitz_BPTI	e2fl8Q1	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
P	Kunitz_BPTI	e2fl8P2	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
O	Kunitz_BPTI	e2fl8O1	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
N	Kunitz_BPTI	e2fl8N2	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
M	Kunitz_BPTI	e2fl8M2	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
L	Kunitz_BPTI	e2fl8L2	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
K	Kunitz_BPTI	e2fl8K2	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
J	Kunitz_BPTI	e2fl8J2	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
I	Kunitz_BPTI	e2fl8I1	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
H	Kunitz_BPTI	e2fl8H1	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
G	Kunitz_BPTI	e2fl8G1	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
F	Kunitz_BPTI	e2fl8F1	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
E	Kunitz_BPTI	e2fl8E1	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
D	Kunitz_BPTI	e2fl8D1	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
C	Kunitz_BPTI	e2fl8C1	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
B	Kunitz_BPTI	e2fl8B2	A: a/b three-layered sandwiches	X: C-terminal domain in some PLP-dependent transferases	H: C-terminal domain in some PLP-dependent transferases	T: C-terminal domain in some PLP-dependent transferases	F: Kunitz_BPTI	ECOD (v294.1)
A	Gp10_C	e2fl8A2	A: a/b three-layered sandwiches	X: gp11/gp12 receptor-binding domain	H: gp11/gp12 receptor-binding domain	T: gp11/gp12 receptor-binding domain	F: Gp10_C	ECOD (v294.1)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	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
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	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
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	PF23618	Bacteriophage T4 gp9/10-like protein, C-terminal (T4_gp9_10_C)	Bacteriophage T4 gp9/10-like protein, C-terminal	This entry represents the C-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 C-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 C-terminal domain is thought to be essential for trimerisation and is organised into an eight- stranded antiparallel beta-barrel, which was found to resemble the 'jelly roll' fold found in many viral capsid proteins [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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	Baseplate structural 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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	IPR036240	Gp9-like superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	IPR008987	Baseplate structural protein Gp9/Gp10, N-terminal domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	IPR054430	Baseplate wedge protein gp10, domain 3	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	IPR056391	Baseplate protein gp9-like, C-terminal	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	IPR053827	Baseplate structural protein Gp10, C-terminal domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	IPR027411	Baseplate structural protein Gp9/Gp10 middle domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	IPR034695	Baseplate wedge protein gp10	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.