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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:P10927
Protein Name:Baseplate structural protein Gp9
Length:288
Molecular Weight:30997.00
Species:Enterobacteria phage T4 [10665]
Location1 / Topology2 / Orientation3: Virion1
Substrate deoxyribonucleic acid

Cross database links:

Structure:
1PDP   1QEX   1S2E   1TJA   1ZKU   5IV5   5IV7     

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MFIQEPKKLI DTGEIGNAST GDILFDGGNK INSDFNAIYN AFGDQRKMAV ANGTGADGQI 
61:	IHATGYYQKH SITEYATPVK VGTRHDIDTS TVGVKVIIER GELGDCVEFI NSNGSISVTN 
121:	PLTIQAIDSI KGVSGNLVVT SPYSKVTLRC ISSDNSTSVW NYSIESMFGQ KESPAEGTWN 
181:	ISTSGSVDIP LFHRTEYNMA KLLVTCQSVD GRKIKTAEIN ILVDTVNSEV ISSEYAVMRV 
241:	GNETEEDEIA NIAFSIKENY VTATISSSTV GMRAAVKVIA TQKIGVAQ