7ZQB | pdb_00007zqb

Tail tip of siphophage T5 : full structure

External Resource: Annotation


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
F [auth a]EUF07531e7zqba1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07531ECOD (1.6)
F [auth a]EUF07532e7zqba2 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07532ECOD (1.6)
FA [auth V]EUF07531e7zqbV1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07531ECOD (1.6)
FA [auth V]EUF07532e7zqbV2 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07532ECOD (1.6)
GA [auth Z]EUF07531e7zqbZ2 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07531ECOD (1.6)
GA [auth Z]EUF07532e7zqbZ1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07532ECOD (1.6)
L [auth X]EUF07531e7zqbX1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07531ECOD (1.6)
L [auth X]EUF07532e7zqbX2 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07532ECOD (1.6)
M [auth Y]EUF07531e7zqbY1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07531ECOD (1.6)
M [auth Y]EUF07532e7zqbY2 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07532ECOD (1.6)
U [auth W]EUF07531e7zqbW1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07531ECOD (1.6)
U [auth W]EUF07532e7zqbW2 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Phage tail proteinsF: EUF07532ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF24169Straight fiber protein PB4 first Fn3-like domain (Fn3-I_PB4)Straight fiber protein PB4 first Fn3-like domainThis entry represents the N-terminal Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to ...This entry represents the N-terminal Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to the host receptor FhuA, the central fiber reorganises and undergoes structural rearrangements that lead to its bending, bringing PB3 close to the host membrane for anchoring [1]. The PB4-PB3 interactions are ensured by the proximal loops of the first of the three Fn3-like domains of PB4. These interactions are disrupted upon binding to the host receptor and the string of PB4 Fn3-like domains undergoes drastic conformational changes.
Domain
PF23926LtfC-like, beta-sandwich domain (LtfC)LtfC-like, beta-sandwich domainThis entry, previously known as DUF7264, represents a domain found in the Minor tail protein Gp6, Collar protein p132, Lateral tail fiber protein C (LtfC) and related phage proteins. This domain folds into a beta-sandwich fold with and extended beta- ...This entry, previously known as DUF7264, represents a domain found in the Minor tail protein Gp6, Collar protein p132, Lateral tail fiber protein C (LtfC) and related phage proteins. This domain folds into a beta-sandwich fold with and extended beta-hairpin that projects away from it. The minor tail proteins Gp6 are likely involved in the assembly or function of the tail structure in bacteriophages. The collar protein p132 forms the T5 phage collar structure, which serves as an anchoring point for the side tail fiber protein pb1, suggesting a role in stabilising the tail fibers and ensuring proper attachment to the host cell [1]. The lateral tail fiber protein C (LtfC) is a component of the DT57C bacteriophage tail tip complex where it forms a dodecameric ring [2]. LtfC adopts a compact, single-domain structure. The LtfC ring is complemented by another lateral tail fiber protein, LtfA. Each of the LtfA monomers is connected to the LtfC assembly in a unique way by augmenting the edges of LtfC beta-sheets with two short beta-strands and thus completing the LtfC beta-sandwich structure.
Domain
PF24170Straight fiber protein PB4 second Fn3-like domain (Fn3-II_PB4)Straight fiber protein PB4 second Fn3-like domainThis entry represents the second Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to the ...This entry represents the second Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to the host receptor FhuA, the central fiber reorganises and undergoes structural rearrangements that lead to its bending, bringing PB3 close to the host membrane for anchoring [1]. The PB4-PB3 interactions are ensured by the distal loops of the second of the three Fn3-like domains of PB4. These interactions are disrupted upon binding to the host receptor and the string of the three PB4 Fn3-like domains undergoes drastic conformational changes.
Domain
PF21430Distal tail protein pb9, B domain (DTP-pb9_B-dom)Distal tail protein pb9, B domainThis entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. This entry represents domain B which adopts an OB fold and is insert ...This entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. This entry represents domain B which adopts an OB fold and is inserted in domain A [1].
Domain
PF02368Bacterial Ig-like domain (group 2) (Big_2)Bacterial Ig-like domain (group 2)This family consists of bacterial domains with an Ig-like fold. Members of this family are found in bacterial and phage surface proteins such as intimins. Domain
PF21424Distal tail protein pb9, A domain C-terminal (DTP-pb9_A-dom_C)Distal tail protein pb9, A domain C-terminalThis entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. Domain A adopts a split barrel fold and includes residues 1 to 82-1 ...This entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. Domain A adopts a split barrel fold and includes residues 1 to 82-172 to 205. This entry covers the C-terminal region of the A domain [1].
Domain
PF21425Distal tail protein pb9, A domain, N-terminal (DTP-pb9_A-dom_N)Distal tail protein pb9, A domain, N-terminalThis entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. Domain A adopts a split barrel fold and includes residues 1 to 82-17 ...This entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. Domain A adopts a split barrel fold and includes residues 1 to 82-172 to 205. This entry covers the N-terminal region of the A domain [1]. The C-terminal segment of the A domain is represented in Pfam:PF21424.
Domain
PF21430Distal tail protein pb9, B domain (DTP-pb9_B-dom)Distal tail protein pb9, B domainThis entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. This entry represents domain B which adopts an OB fold and is insert ...This entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. This entry represents domain B which adopts an OB fold and is inserted in domain A [1].
Domain
PF21424Distal tail protein pb9, A domain C-terminal (DTP-pb9_A-dom_C)Distal tail protein pb9, A domain C-terminalThis entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. Domain A adopts a split barrel fold and includes residues 1 to 82-1 ...This entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. Domain A adopts a split barrel fold and includes residues 1 to 82-172 to 205. This entry covers the C-terminal region of the A domain [1].
Domain
PF21425Distal tail protein pb9, A domain, N-terminal (DTP-pb9_A-dom_N)Distal tail protein pb9, A domain, N-terminalThis entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. Domain A adopts a split barrel fold and includes residues 1 to 82-17 ...This entry includes phage distal tail proteins which form a hexameric ring located at the tail tube end, such as pb9 from bacteriophage T5 [1]. pb9 consists of two domains, A and B. Domain A adopts a split barrel fold and includes residues 1 to 82-172 to 205. This entry covers the N-terminal region of the A domain [1]. The C-terminal segment of the A domain is represented in Pfam:PF21424.
Domain
E [auth I],
K [auth H],
T [auth G]		PF24169Straight fiber protein PB4 first Fn3-like domain (Fn3-I_PB4)Straight fiber protein PB4 first Fn3-like domainThis entry represents the N-terminal Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to ...This entry represents the N-terminal Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to the host receptor FhuA, the central fiber reorganises and undergoes structural rearrangements that lead to its bending, bringing PB3 close to the host membrane for anchoring [1]. The PB4-PB3 interactions are ensured by the proximal loops of the first of the three Fn3-like domains of PB4. These interactions are disrupted upon binding to the host receptor and the string of PB4 Fn3-like domains undergoes drastic conformational changes.
Domain
E [auth I],
K [auth H],
T [auth G]		PF24170Straight fiber protein PB4 second Fn3-like domain (Fn3-II_PB4)Straight fiber protein PB4 second Fn3-like domainThis entry represents the second Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to the ...This entry represents the second Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to the host receptor FhuA, the central fiber reorganises and undergoes structural rearrangements that lead to its bending, bringing PB3 close to the host membrane for anchoring [1]. The PB4-PB3 interactions are ensured by the distal loops of the second of the three Fn3-like domains of PB4. These interactions are disrupted upon binding to the host receptor and the string of the three PB4 Fn3-like domains undergoes drastic conformational changes.
Domain
E [auth I],
K [auth H],
T [auth G]		PF23779Bacteriophage Baseplate Tube Protein Family (Baseplate_Tube_p140)Bacteriophage Baseplate Tube Protein Family- Family
E [auth I],
K [auth H],
T [auth G]		PF24171Straight fiber protein PB4 third Fn3-like domain (Fn3-III_PB4)Straight fiber protein PB4 third Fn3-like domainThis entry represents the third Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to the h ...This entry represents the third Fn3-like domain of the Straight fiber protein PB4 found in T5-like phages. PB4 along with PB3, forms the central straight fiber, bearing the receptor binding protein PB5 at its C terminus [1]. Upon PB5 binding to the host receptor FhuA, the central fiber reorganises and undergoes structural rearrangements that lead to its bending, bringing PB3 close to the host membrane for anchoring [1]. The PB4-PB3 interactions are ensured by the proximal loops of the first and the distal loops of the second of the three PB4 Fn3-like domains. These interactions are disrupted upon binding to the host receptor and the string of the three PB4 Fn3-like domains undergoes drastic conformational changes.
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth i],
B [auth h],
C [auth j]		Probable central straight fiber- -
L-shaped tail fiber protein p132- -
HA [auth b],
IA [auth d],
JA [auth c]		Probable baseplate hub protein- -
CA [auth f],
DA [auth g],
EA [auth e]		Pore-forming tail tip protein pb2
Tail tube protein-
Distal tail protein- -
E [auth I],
K [auth H],
T [auth G]		Minor tail protein- -

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A [auth i],
B [auth h],
C [auth j]		IPR057549Straight fiber protein PB4, spike domainDomain
A [auth i],
B [auth h],
C [auth j]		IPR057550Straight fiber protein PB4, first Fn3-like domainDomain
A [auth i],
B [auth h],
C [auth j]		IPR057552Straight fiber protein PB4, third Fn3-like domainDomain
A [auth i],
B [auth h],
C [auth j]		IPR057551Straight fiber protein PB4, second Fn3-like domainDomain
IPR055688LtfC/p132/Gp6, beta-sandwich domainDomain
HA [auth b],
IA [auth d],
JA [auth c]		IPR032876Tip attachment protein JDomain
CA [auth f],
DA [auth g],
EA [auth e]		IPR056207Tape measure protein PB2, N-terminalDomain
CA [auth f],
DA [auth g],
EA [auth e]		IPR056208Tape measure protein PB2, C-terminalDomain
IPR003343Bacterial Ig-like domain, group 2Domain
IPR008964Invasin/intimin cell-adhesion fragmentsHomologous Superfamily
IPR048416Distal tail protein pb9, A domain, C-terminalDomain
IPR048415Distal tail protein pb9, B domainDomain
IPR048417Distal tail protein pb9, A domain, N-terminalDomain
E [auth I],
K [auth H],
T [auth G]		IPR056389Baseplate tube protein p140Family