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2.A.4.7.3
Magnetosome membrane iron transporter, MamB.  Forms a heterodimeric stable complex with MamM which stabilizes MamB.  MamB also interacts with other proteins including the PDZ1 domain of MamE (Q6NE61).  Both MamB and MamM are essential for magnetite biomineralization and are involved in several steps in magnetosome formation. MamM was used to probe the role of the hydrophilic C-terminal domain (CTD) in metal recognition and selectivity. Different metals bind to MamM CTD, suggesting a varying level of functional discrimination between CDF domains. Thus, CDF CTDs play a role in metal selectivity. MamM's CTD discriminates against Mn2+, supporting a role in preventing magnetite formation poisoning in magnetotactic bacteria via Mn2+ incorporation (Barber-Zucker et al. 2020).

Accession Number:Q6NE50
Protein Name:Magnetosome protein MamB
Length:297
Molecular Weight:31942.00
Species:Magnetospirillum gryphiswaldense [55518]
Number of TMSs:4
Substrate Fe2+

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FASTA formatted sequence
1:	MKFENCRDCR EEVVWWAFTA DICMTLFKGI LGLMSGSVAL VADSLHSGAD VVASGVTQLS 
61:	LKISNKPADE RYPFGYGNIQ YISSAIVGSL LLIGASFLMY GSVVKLISGT YEAPSIFAAL 
121:	GASVTVIVNE LMYRYQICVG NENNSPAIIA NAWDNRSDAI SSAAVMVGVI ASVIGFPIAD 
181:	TIAAIGVSAL VGHIGLELIG KAVHGLMDSS VDTELLQTAW QIATDTPLVH SIYFLRGRHV 
241:	GEDVQFDIRL RVDPNLRIKD SSMVAEAVRQ RIQDEIPHAR DIRLFVSPAP AAVTVRV