This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.


1gxu

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
[[Image:1gxu.gif|left|200px]]
+
{{Seed}}
 +
[[Image:1gxu.png|left|200px]]
<!--
<!--
Line 9: Line 10:
{{STRUCTURE_1gxu| PDB=1gxu | SCENE= }}
{{STRUCTURE_1gxu| PDB=1gxu | SCENE= }}
-
'''HYDROGENASE MATURATION PROTEIN HYPF "ACYLPHOSPHATASE-LIKE" N-TERMINAL DOMAIN (HYPF-ACP) IN COMPLEX WITH A SUBSTRATE. CRYSTAL GROWN IN THE PRESENCE OF CARBAMOYLPHOSPHATE'''
+
===HYDROGENASE MATURATION PROTEIN HYPF "ACYLPHOSPHATASE-LIKE" N-TERMINAL DOMAIN (HYPF-ACP) IN COMPLEX WITH A SUBSTRATE. CRYSTAL GROWN IN THE PRESENCE OF CARBAMOYLPHOSPHATE===
-
==Overview==
+
<!--
-
[NiFe]-hydrogenases require a set of complementary and regulatory proteins for correct folding and maturation processes. One of the essential regulatory proteins, HypF (82kDa) contains a N-terminal acylphosphatase (ACT)-like domain, a sequence motif shared with enzymes catalyzing O-carbamoylation, and two zinc finger motifs similar to those found in the DnaJ chaperone. The HypF acylphosphatase domain is thought to support the conversion of carbamoylphosphate into CO and CN(-), promoting coordination of these ligands to the hydrogenase metal cluster. It has been shown recently that the HypF N-terminal domain can aggregate in vitro to yield fibrils matching those formed by proteins linked to amyloid diseases. The 1.27A resolution HypF acylphosphatase domain crystal structure (residues 1-91; R-factor 13.1%) shows a domain fold of betaalphabetabetaalphabeta topology, as observed in mammalian acylphosphatases specifically catalyzing the hydrolysis of the carboxyl-phosphate bonds in acylphosphates. The HypF N-terminal domain can be assigned to the ferredoxin structural superfamily, to which RNA-binding domains of small nuclear ribonucleoproteins and some metallochaperone proteins belong. Additionally, the HypF N-terminal domain displays an intriguing structural relationship to the recently discovered ACT domains. The structures of different HypF acylphosphatase domain complexes show a phosphate binding cradle comparable to the P-loop observed in unrelated phosphatase families. On the basis of the catalytic mechanism proposed for acylphosphatases, whereby residues Arg23 and Asn41 would support substrate orientation and the nucleophilic attack of a water molecule on the phosphate group, fine structural features of the HypF N-terminal domain putative active site region may account for the lack of acylphosphatase activity observed for the expressed domain. The crystallographic analyses here reported were undertaken to shed light on the molecular bases of inactivity, folding, misfolding and aggregation of the HypF N-terminal acylphosphatase domain.
+
The line below this paragraph, {{ABSTRACT_PUBMED_12206761}}, adds the Publication Abstract to the page
 +
(as it appears on PubMed at http://www.pubmed.gov), where 12206761 is the PubMed ID number.
 +
-->
 +
{{ABSTRACT_PUBMED_12206761}}
==About this Structure==
==About this Structure==
Line 32: Line 36:
[[Category: Hydrogenase maturation]]
[[Category: Hydrogenase maturation]]
[[Category: Zinc-finger]]
[[Category: Zinc-finger]]
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 18:09:29 2008''
+
 
 +
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 06:17:27 2008''

Revision as of 03:17, 1 July 2008

Image:1gxu.png

Template:STRUCTURE 1gxu

HYDROGENASE MATURATION PROTEIN HYPF "ACYLPHOSPHATASE-LIKE" N-TERMINAL DOMAIN (HYPF-ACP) IN COMPLEX WITH A SUBSTRATE. CRYSTAL GROWN IN THE PRESENCE OF CARBAMOYLPHOSPHATE

Template:ABSTRACT PUBMED 12206761

About this Structure

1GXU is a Single protein structure. Full crystallographic information is available from OCA.

Reference

Crystal structure and anion binding in the prokaryotic hydrogenase maturation factor HypF acylphosphatase-like domain., Rosano C, Zuccotti S, Bucciantini M, Stefani M, Ramponi G, Bolognesi M, J Mol Biol. 2002 Aug 30;321(5):785-96. PMID:12206761

Page seeded by OCA on Tue Jul 1 06:17:27 2008

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1gxu"
Personal tools