John Blackwell

The structure of α-chitin

Refinement of the structure of β‐chitin

Abstract The structure of β‐chitin has been refined by rigid‐body least‐squares methods, based on the intensity data for highly crystalline specimens from the pogonophore Oligob...

Structure of β‐chitin or parallel chain systems of poly‐β‐(1→4)‐<i>N</i>‐acetyl‐<scp>D</scp>‐glucosamine

Abstract The structure of β‐chitin has been reexamined in an X ‐ray diffraction study of the highly crystalline material available from pogonophore tubes. Oriented specimens wer...

Chitin in pogonophore tubes

The chitin from pogonophore tubes is shown to be essentially the same as that from the pen of the squid Loligo and is classified as β-chitin (as are the known chitins in annelid...