ISDA

Deposition Date 2002-12-24

Release Date 2003-08-05

Last Version Date 2024-10-30

Entry Detail

PDB ID:

1NIO

Keywords:

HYDROLASE

Title:

Crystal structure of beta-luffin, a ribosome inactivating protein at 2.0A resolution

Biological Source:

Source Organism:

Luffa aegyptiaca (Taxon ID: 3670)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.00 Å

R-Value Free:

0.20

R-Value Work:

0.16

R-Value Observed:

0.16

Space Group:

C 1 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:b-luffin
Chain IDs:A
Chain Length:247
Number of Molecules:1
Biological Source:Luffa aegyptiaca

UniProt ID:P22851 Pfam ID:PF00161

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
ASN	A	ASN	GLYCOSYLATION SITE

Ligand Molecules

NAG

Primary Citation

Crystal structure of beta-luffin, a ribosome-inactivating protein, at 2.0 A resolution.

Ma, Q.J, Li, J.H, Li, H.G, Wu, S, Dong, Y.C.Show

Acta Crystallogr.,Sect.D 59 1366 1370 (2003)

PMID: 12876337 DOI: 10.1107/S0907444903011156

Abstact

The crystal structure of beta-luffin at 2.0 A resolution was solved by the molecular-replacement method using polyalanyl trichosanthin as the search model. The structure was refined with CNS1.1, giving R(work) = 0.162 and R(free) = 0.204. The r.m.s.d.s of the bond lengths and bond angles are 0.008 A and 1.3 degrees, respectively. The overall structure is similar to those of other type I RIPs. Three N-acetylglucosamine (Nag) molecules are linked to residues Asn2, Asn78 and Asn85 of the protein.

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Primary Citation of related structures