CASP2 Target T0027

1. Protein Name

Pectin lyase A

2. Organism Name

Aspergillus niger

3. Number of amino acids (approx)

359

4. Accession number

Q01172; EMBL; X60724; PIR; S17979; S17979The structures are distantly related to that of the extracellular family of pectate lyases, PelC and PelE from Erwinia chrysanthemi and BsPel from Bacillussubtilis. Thus the overall fold is obvious and there alread

5. Sequence Database

Swiss-prot

6. Amino acid sequence

1 MKYSTIFSAA AAVFAGSAAA VGVSGSAEGF AEGVTGGGDA TPVYPDTIDE

51 LVSYLGDDEA RVIVLTKTFD FTDSEGTTTG TGCAPWGTAS ACQVAIDQDD

101 WCENYEPDAP SVSVEYYNAG VLGITVTSNK SLIGEGSSGA IKGKGLRIVS

151 GAENIIIQNI AVTDINPKYV WGGDAITLDD CDLVWIDHVT TARIGRQHYV

201 LGTSADNRVS LTNNYIDGVS DYSATCDGYH YWGIYLDGDA DLVTMKGNYI

251 YHTSGRSPKV QDNTLLHCVN NYFYDISGHA FEIGEGGYVL AEGNVFQNVD

301 TVLETYEGAA FTVPSTTAGE VCSTYLGRDC VINGFGCSGT FSEDSTSFLS

351 DFEGKNIASA SAYTSVASRV VANAGQGNL

7. Homologous Sequence of known structure

yes

8. Current state of the experimental work

Refinement and manuscript preparation to 1.9A (strain 4M-147), and 2.4A
resolution (N-400).

The two structures are sufficiently similar for inter-crystal averaging to have
been useful despite the sequence differences.

9. Interpretable map?

yes

10. Estimated date of chain tracing completion

done

11. Estimated date of public release of structure

1.10.96

13. Name

John Jenkins

14. Mailing address

Food Macromolecular Science, Institute of Food Research,Earley Gate,
Whiteknights Road, Reading RG6 6BZ, UK

15. Telephone

+ 44 (0)1189 357143

16. Fax

+ 44 (0)1189 267917

17. Email

john.jenkins@bbsrc.ac.uk

18. Source of information about experiment

Email

12. Additional Information

Note that the signal peptide, 1-20 above, is removed and thus not part of the
structure determined

The sequence from strain 4M-147 (Danisco Ingrediants) is slightly different

MKYSTIFSAA AAVFAGSAAA VGVSGSAEGF AKGVTGGGSA TPVYPDTIDE
LVSYLGDDEA RVIVLTKTFD FTDSEGTTTG TGCAPWGTAS ACQVAIDQDD
WCENYEPDAP SVSVEYYNAG TLGITVTSNK SLIGEGSSGA IKGKGLRIVS
GAENIIIQNI AVTDINPKYV WGGDAITLDD CDLVWIDHVT TARIGRQHYV
LGTSADNRVS LTNNYIDGVS DYSATCDGYH YWAIYLDGDA DLVTMKGNYI
YHTSGRSPEV QDNTLLHAVN NYWYDISGHA FEIGEGGYVL AEGNVFQNVD
TVLETYEGEA FTVPSSTAGE VCSTYLGRDC VINGFGSSGT FSEDSTSFLS
DFEGKNIASA SAYTSVASRV VANAGQGYL

The N-terminus of the mature enzyme is the same as for strain N-400. Thus
again residues 1-20 have been removed.

The structures are distantly related to that of the extracellular family of
pectate lyases, PelC and PelE from Erwinia chrysanthemi and BsPel from Bacillus
subtilis. Thus the overall fold is obvious and there already exists an alignment
from Henrissat et al. Plant Physiol. 107, 963-976 (1995) which shows most of the
members of this family.

Related Files

Template PDB file