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Erratum to: Evolution of prokaryotic SPFH proteins
BMC Evolutionary Biologyvolume 9, Article number: 22 (2009)
The original article was published in BMC Evolutionary Biology 2009 9:10
After publication of this manuscript , we became aware that two citations that cover the prokaryotic SPFH1 proteins (here called paraslipins (SPFH1a) and eoslipins (SPFH1b))  and the association of these SPFH1 proteins with NfeD proteins  which had been included in earlier versions of the manuscript had erroneously gotten lost during the corrections performed in the reviewing process.
We regret any inconvenience that these omissions might have caused and thank Prof. J.P.W. Young for bringing this matter to our attention.
Hinderhofer M, Walker CA, Friemel A, Stuermer CAO, Moeller HM, Reuter A: Evolution of prokaryotic SPFH proteins. BMC Evolutionary Biology. 2009, 9: 10-10.1186/1471-2148-9-10.
Green JB, Young JPW: Slipins: ancient origin, duplication and diversification of the stomatin protein family. BMC Evolutionary Biology. 2008, 8: 44-10.1186/1471-2148-8-44.
Green JB, Fricke B, Chetty MC, von During M, Preston GF, Steward GW: Eucaryotic and prokaryotic stomatins: the proteolytic link. Blood Cells Molecules and Diseases. 2004, 32: 411-422. 10.1016/j.bcmd.2004.01.016.
The online version of the original article can be found at 10.1186/1471-2148-9-10