Orthogonal beta beta motifs in proteins.
A super-secondary structural motif comprising two orthogonally oriented beta-strands connected by short linking segments of less than or equal to 5 residues has been identified from a data set of 65 independent protein crystal structures. Of the 42 examples from 14 proteins, a vast majority have only a single residue as the linking element. Analysis of the conformational angles at the junction reveals that the recently described type VIII beta-turn occurs frequently at the connecting hinge, while the type II beta-turn is also fairly common.
Sowdhamini
R
R
Molecular Biophysics Unit, Indian Institute of Science, Bangalore.
Srinivasan
N
N
Ramakrishnan
C
C
Balaram
P
P
D000818:Animals; D003461:Crystallography; D015394:Molecular Structure; D011487:Protein Conformation; D011506:Proteins / Q000737:chemistry / Q000648:ultrastructure*
D011506:Proteins