1v9m is a 1 chain structure with sequence from Thermus thermophilus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The V-type H(+)-ATPases are similar to the F-type ATP synthases in their structure and functional mechanism. They hydrolyze ATP coupled with proton translocation across a membrane, but in some archaea and eubacteria they also synthesize ATP in the reverse reaction. The C subunit is one of the components of the membrane-bound V(0) moiety of V-type ATPases. The C subunit of V-type H(+)-ATPase from Thermus thermophilus was crystallized in a monoclinic form and its crystal structure was determined at 1.85 A resolution by the MAD method using selenomethionyl protein. The structure has a cone (tapered cylinder) shape consisting of only two types of helix (long and short) as secondary-structure elements. The molecule is divided into three similar domains, each of which has essentially the same topology. On the basis of the structural features and molecular-surface charge distribution, it is suggested that the bottom side of the C subunit is a possible binding site for the V(0) proteolipid L-subunit ring and that the C subunit might function as a spacer unit between the proteolipid L-subunit ring and the rotating V(1) central shaft.
Structure of the C subunit of V-type ATPase from Thermus thermophilus at 1.85 A resolution.,Numoto N, Kita A, Miki K Acta Crystallogr D Biol Crystallogr. 2004 May;60(Pt 5):810-5. Epub 2004, Apr 21. PMID:15103125[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
↑ Numoto N, Kita A, Miki K. Structure of the C subunit of V-type ATPase from Thermus thermophilus at 1.85 A resolution. Acta Crystallogr D Biol Crystallogr. 2004 May;60(Pt 5):810-5. Epub 2004, Apr 21. PMID:15103125 doi:10.1107/S0907444904003257
