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ATP-binding cassette domain-containing protein
ABC transporters for a large family of proteins responsible for translocation of a variety of compounds across biological membranes. ABC transporters are the largest family of proteins in many completely sequenced bacteria. ABC transporters are composed of two copies of this domain and two copies of a transmembrane domain Pfam:PF00664. These four domains may belong to a single polypeptide as in Swiss:P13569, or belong in different polypeptide chains. [1]. 1864505. Homology between proteins controlling Streptomyces fradiae tylosin resistance and ATP-binding transport. Rosteck PR Jr, Reynolds PA, Hershberger CL;. Gene 1991;102:27-32. [2]. 1977073. Structure and function of haemolysin B,P-glycoprotein and other members of a novel family of membrane translocators. Blight MA, Holland IB;. Mol Microbiol 1990;4:873-880. [3]. 2229036. Binding protein-dependent transport systems. Higgins CF, Hyde SC, Mimmack MM, Gileadi U, Gill DR, Gallagher MP;. J Bioenerg Biomembr 1990;22:571-592. [4]. 9872322. Crystal structure of the ATP-binding subunit of an ABC transporter. Hung LW, Wang IX, Nikaido K, Liu PQ, Ames GF, Kim SH;. Nature 1998;396:703-707. (from Pfam)
Fe-S cluster assembly ATPase SufC
SufC is part of the SUF system, shown in E. coli to consist of six proteins and believed to act in Fe-S cluster formation during oxidative stress. SufC forms a complex with SufB and SufD. SufC belongs to the ATP-binding cassette transporter family (PF00005) but is no longer thought to be part of a transporter. The complex is reported as cytosolic (PMID:12554644) or associated with the membrane (PMID:11943156). The SUF system also includes a cysteine desulfurase (SufS, enhanced by SufE) and a probable iron-sulfur cluster assembly scaffold protein, SufA.
ABC transporter ATP-binding protein
ATP-binding cassette ATPase similar to SufC, one of the six protein products of the sufABCDSE operon, which is an atypical cytoplasmic ABC-ATPase involved in Fe-S cluster assembly under oxidative stress conditions and forms a complex with SufB and SufD
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