PMID- 7823320
OWN - NLM
STAT- MEDLINE
DCOM- 19950213
LR  - 20131121
IS  - 0022-2836 (Print)
IS  - 0022-2836 (Linking)
VI  - 245
IP  - 1
DP  - 1995 Jan 6
TI  - The refined structures of goose lysozyme and its complex with a bound
      trisaccharide show that the "goose-type" lysozymes lack a catalytic aspartate
      residue.
PG  - 54-68
AB  - The structure of goose egg-white lysozyme (GEWL) has been refined to an R-value
      of 15.9% at 1.6 A resolution. Details of the structure determination, the
      refinement and the structure itself are presented. The structure of a complex of 
      the enzyme with the trisaccharide of N-acetyl glucosamine has also been
      determined and refined at 1.6 A resolution. The trisaccharide occupies sites
      analogous to the B, C and D subsites of chicken (HEWL) and phage T4 (T4L)
      lysozymes. All three lysozymes (GEWL, HEWL and T4L) display the same
      characteristic set of bridging hydrogen bonds between backbone atoms of the
      protein and the 2-acetamido group of the saccharide in subsite C. Glu73 of GEWL
      is seen to correspond closely to Glu35 of HEWL (and to Glu11 of T4L) and supports
      the established view that this group is critically involved in the catalytic
      mechanism. There is, however, no obvious residue in goose lysozyme that is a
      counterpart of Asp52 of chicken lysozyme (or of Asp20 in T4L), suggesting that a 
      second acidic residue is not essential for the catalytic activity of goose
      lysozyme, and may not be required for the activity of other lysozymes.
FAU - Weaver, L H
AU  - Weaver LH
AD  - Institute of Molecular Biology, Howard Hughes Medical Institute, Eugene, OR.
FAU - Grutter, M G
AU  - Grutter MG
FAU - Matthews, B W
AU  - Matthews BW
LA  - eng
GR  - GM20066/GM/NIGMS NIH HHS/United States
PT  - Journal Article
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - England
TA  - J Mol Biol
JT  - Journal of molecular biology
JID - 2985088R
RN  - 0 (Trisaccharides)
RN  - EC 3.2.1.17 (Muramidase)
RN  - V956696549 (Acetylglucosamine)
SB  - IM
MH  - Acetylglucosamine/*chemistry
MH  - Amino Acid Sequence
MH  - Animals
MH  - Bacteriophage T4/chemistry
MH  - Chickens
MH  - Crystallography
MH  - Enzyme Activation
MH  - Geese
MH  - Hydrogen Bonding
MH  - Models, Chemical
MH  - Molecular Sequence Data
MH  - Muramidase/*chemistry
MH  - Protein Conformation
MH  - Species Specificity
MH  - Trisaccharides/*chemistry
EDAT- 1995/01/06 00:00
MHDA- 1995/01/06 00:01
CRDT- 1995/01/06 00:00
PHST- 1995/01/06 00:00 [pubmed]
PHST- 1995/01/06 00:01 [medline]
PHST- 1995/01/06 00:00 [entrez]
PST - ppublish
SO  - J Mol Biol. 1995 Jan 6;245(1):54-68.