ISDA

Deposition Date 1991-12-11

Release Date 1993-01-15

Last Version Date 2024-11-13

Entry Detail

PDB ID:

1BPT

Keywords:

PROTEINASE INHIBITOR (TRYPSIN)

Title:

CREVICE-FORMING MUTANTS OF BPTI: CRYSTAL STRUCTURES OF F22A, Y23A, N43G, AND F45A

Biological Source:

Source Organism:

Bos taurus (Taxon ID: 9913)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.00 Å

R-Value Work:

0.16

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:BOVINE PANCREATIC TRYPSIN INHIBITOR
Chain IDs:A
Chain Length:58
Number of Molecules:1
Biological Source:Bos taurus

UniProt ID:P00974 Pfam ID:PF00014

Ligand Molecules

PO4

Primary Citation

Crevice-forming mutants in the rigid core of bovine pancreatic trypsin inhibitor: crystal structures of F22A, Y23A, N43G, and F45A.

Danishefsky, A.T, Housset, D, Kim, K.S, Tao, F, Fuchs, J, Woodward, C, Wlodawer, A, Kim, K.S, Tao, F, Fuchs, J, Danishefsky, A.T, Housset, D, Wlodawer, A, Woodward, C, Housset, D, Kim, K.-S, Fuchs, J, Woodward, C, Wlodawer, A, Eigenbrot, C, Randal, M, Kossiakoff, A.A, Hynes, T.R, Randal, M, Kennedy, L.A, Eigenbrot, C, Kossiakoff, A.A, Wlodawer, A, Nachman, J, Gilliland, G.L, Woodward, W.Gallagher C, Wlodawer, A, Walter, J, Huber, R, Sjolin, L, Wlodawer, A, Deisenhofer, J, Huber, R, Walter, J, Huber, R.Show

Protein Sci. 2 577 587 (1993)

PMID: 8518731

Abstact

Crystal structures of four mutants of bovine pancreatic trypsin inhibitor (F22A, Y23A, N43G, and F45A), engineered to alter their stability properties, have been determined. The mutated residues, which are highly conserved among Kunitz-type inhibitors, are located in the rigid core of the molecule. Replacement of the partially buried bulky residues of the wild-type protein with smaller residues resulted in crevices open to the exterior of the molecule. The overall three-dimensional structure of these mutants is very similar to that of the wild-type protein and only small rearrangements are observed among the atoms lining the crevices.

Legend

Protein

Chemical

Disease

Primary Citation of related structures