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1.M.7.1.1
Phage Mu spanin, Span1, of 128 aas and 1 N-terminal TMS. See Chamblee et al. 2022 for its identification. It may function with Span1.1. See the family description for more details. It is an inner membrane subunit, and its gene and protein designations are Mup23 and gp23.

Accession Number:Q9T1X1
Protein Name:Probable spanin, inner membrane subunit
Length:128
Molecular Weight:14281.00
Species:Escherichia phage Mu (Bacteriophage Mu) [10677]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Host cell inner membrane1
Substrate protein

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MTFASKSLLL AAVFTAVLSG GLWHRLDSTR HDNQTLRREL QTEQQARHTA EWLLHGQEQT 
61:	MQVFSAIRAA NRAARLADET EHHDAKEKIT TAITGDNCST RPVPAVAADR LRELEKRTRA 
121:	IGGDPARN