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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:P11112
Protein Name:Tail connector protein Gp15
Length:272
Molecular Weight:31557.00
Species:Enterobacteria phage T4 [10665]
Location1 / Topology2 / Orientation3: Virion1
Substrate deoxyribonucleic acid

Cross database links:

Structure:
3J2M   3J2N   4HUD   4HUH     

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MFGYFYNSSF RRYATLMGDL FSNIQIKRQL ESGDKFIRVP ITYASKEHFM MKLNKWTSIN 
61:	SQEDVAKVET ILPRINLHLV DFSYNAPFKT NILNQNLLQK GATSVVSQYN PSPIKMIYEL 
121:	SIFTRYEDDM FQIVEQILPY FQPHFNTTMY EQFGNDIPFK RDIKIVLMSA AIDEAIDGDN 
181:	LSRRRIEWSL TFEVNGWMYP PVDDAEGLIR TTYTDFHANT RDLPDGEGVF ESVDSEVVPR 
241:	DIDPEDWDGT VKQTFTSNVN RPTPPEPPGP RT