Hi Suhail:
Please take a look at p. 808 of International Tables For Crystallography
Vol. A (Space group Symmetry), c. 1989.
Back in 1935 it appears that H32 and its variants were used.
Current symbols:
H32 or H321 = P312
H312 or H3121 = P3112
They correspond to the HEXAGONAL setting.
R3 and variants corespond to the rhombohedral setting which is a special
case of hexagonal.
Best regards
-raman
{*} Could someone please help me clarify a space group
{*} which I cannot identify within the International
{*} Tables. A number of PDB files (e.g. 1xda) give the space group
{*} as being H3. The symmetry operators and cell parameters
{*} resemble R3. Is H3 a variant ?
{*}
{*} Thanks
{*} ____________________________________________
{*} Suhail A Islam
{*} Biomolecular Modelling Laboratory
{*} Imperial Cancer Research Fund, P.O. Box 123
{*} 44 Lincoln's Inn Fields, London WC2A 3PX
{*} Tel: (0171) 269 3380
{*} Fax: (0171) 269 3258
{*} email: islam at icrf.icnet.uk
{*} http://www.icnet.uk/bmm/
{*} ____________________________________________
{*}
___________________________________________________________________
C.S.Raman Tel: (714) 824-4322
University of California Fax: (714) 824-3280
Dept. MB & B, SH530 email: craman at uci.edu
3205 Bio Sci II
Irvine, CA 92697-3900
-------------------------------------------------------------------
In a time of drastic change it is the learners who inherit the
future. The learned usually find themselves equipped to live
in a world that no longer exists. --Eric Hoffer
___________________________________________________________________
