This is a preview. Log in through your library . Abstract Two methods were used to attach heavy atoms to specific sites on the myoglobin molecule in type A crystals: (i) the use of specific reagents ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 76, No. 8 (Aug., 1979), pp. 4071-4074 (4 pages) An electron-density map of the mouse galactan-binding ...

IT has been customary to classify the groups of layer silicate minerals as trioctahedral or dioctahedral according as all the octahedral ion sites in the lattice are occupied, or only two sites out of ...

The phase angles of 8,000 reflexions were determined by the method of isomorphous replacement, using crystals of native haemoglobin and of three heavy atom derivatives. The electron density maps show ...