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1.K.1.1.1
Baseplate structural protein complex (GP5 is a lysozyme showing limited similarity to ComA of Neisseria species (3.A.11.2.1)) plus Gp18 tail sheath protein of phage T4. Gp5 (575 aas), the baseplate hub subunit, contains (1) an N-terminal GP5_OB domain, (2) a central lysozyme domain, and (3) a C-terminal domain of ~200 aas with repeat units that resemble BigA (1.B.12.5.5; residues 400-600) and ComA (3.A.11.2.1; residues 400-600). Twenty proteins comprise the entire tail complex of T4. See Rossmann et al. 2004 and Leiman et al. 2010) for tabulation of the properties and evidence concerning the functions of these constituents. gp27 and gp29 may comprise the transmembrane channel (Hu et al. 2015). The tail complex of T4 resembles the type VI protein secretion systems (TC# 3.A.23) of enteric bacteria (Shneider et al. 2013).

Accession Number:P13339
Protein Name:Tail-tube assembly protein Gp48
Length:364
Molecular Weight:39734.00
Species:Enterobacteria phage T4 [10665]
Location1 / Topology2 / Orientation3: Virion1
Substrate deoxyribonucleic acid

Cross database links:

Structure:
5IV5     

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MAIVKEITAD LIKKSGEKIS AGQSTKSEVG TKTYTAQFPT GRASGNDTTE DFQVTDLYKN 
61:	GLLFTAYNMS SRDSGSLRSM RSNYSSSSSS ILRTARNTIS STVSKLSNGL ISNNNSGTIS 
121:	KSPIANILLP RSKSDVDTSS HRFNDVQESL ISRGGGTATG VLSNIASTAV FGALESITQG 
181:	IMADNNEQIY TTARSMYGGA ENRTKVFTWD LTPRSTEDLM AIINIYQYFN YFSYGETGKS 
241:	QYAAEIKGYL DDWYRSTLIE PLSPEDAAKN KTLFEKMTSS LTNVLVVSNP TVWMVKNFGA 
301:	TSKFDGKTEI FGPCQIQSIR FDKTPNGNFN GLAIAPNLPS TFTLEITMRE IITLNRASLY 
361:	AGTF