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.

1mty

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 18:34, 20 November 2019

METHANE MONOOXYGENASE HYDROXYLASE FROM METHYLOCOCCUS CAPSULATUS (BATH)

Structural highlights

1mty is a 6 chain structure with sequence from Methylococcus capsulatus str. bath. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Activity:	Methane monooxygenase (soluble), with EC number 1.14.13.25
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[MEMA_METCA] Responsible for the initial oxygenation of methane to methanol in methanotrophs. It also catalyzes the monohydroxylation of a variety of unactivated alkenes, alicyclic, aromatic and heterocyclic compounds. [MEMG_METCA] Responsible for the initial oxygenation of methane to methanol in methanotrophs. It also catalyzes the monohydroxylation of a variety of unactivated alkenes, alicyclic, aromatic and heterocyclic compounds. [MEMB_METCA] Responsible for the initial oxygenation of methane to methanol in methanotrophs. It also catalyzes the monohydroxylation of a variety of unactivated alkenes, alicyclic, aromatic and heterocyclic compounds.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The crystal structure of the nonheme iron-containing hydroxylase component of methane monooxygenase hydroxylase (MMOH) from Methylococcus capsulatus (Bath) has been solved in two crystal forms, one of which was refined to 1.7 A resolution. The enzyme is composed of two copies each of three subunits (alpha 2 beta 2 gamma 2), and all three subunits are almost completely alpha-helical, with the exception of two beta hairpin structures in the alpha subunit. The active site of each alpha subunit contains one dinuclear iron center, housed in a four-helix bundle. The two iron atoms are octahedrally coordinated by 2 histidine and 4 glutamic acid residues as well as by a bridging hydroxide ion, a terminal water molecule, and at 4 degrees C, a bridging acetate ion, which is replaced at -160 degrees C with a bridging water molecule. Comparison of the results for two crystal forms demonstrates overall conservation and relative orientation of the domain structures. The most prominent structural differences identified between the two crystal forms is in an altered side chain conformation for Leu 110 at the active site cavity. We suggest that this residue serves as one component of a hydrophobic gate controlling access of substrates to and products from the active site. The leucine gate may be responsible for the effect of the B protein component on the reactivity of the reduced hydroxylase with dioxygen. A potential reductase binding site has been assigned based on an analysis of crystal packing in the two forms and corroborated by inhibition studies with a synthetic peptide corresponding to the proposed docking position.

Crystal structures of the methane monooxygenase hydroxylase from Methylococcus capsulatus (Bath): implications for substrate gating and component interactions.,Rosenzweig AC, Brandstetter H, Whittington DA, Nordlund P, Lippard SJ, Frederick CA Proteins. 1997 Oct;29(2):141-52. PMID:9329079^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Rosenzweig AC, Brandstetter H, Whittington DA, Nordlund P, Lippard SJ, Frederick CA. Crystal structures of the methane monooxygenase hydroxylase from Methylococcus capsulatus (Bath): implications for substrate gating and component interactions. Proteins. 1997 Oct;29(2):141-52. PMID:9329079

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1mty"

@@ Line 1: / Line 1: @@
 ==METHANE MONOOXYGENASE HYDROXYLASE FROM METHYLOCOCCUS CAPSULATUS (BATH)==
-<StructureSection load='1mty' size='340' side='right' caption='[[1mty]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
+<StructureSection load='1mty' size='340' side='right'caption='[[1mty]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1mty]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Methylococcus_capsulatus_str._bath Methylococcus capsulatus str. bath]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MTY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1MTY FirstGlance]. <br>
@@ Line 29: / Line 29: @@
 </div>
 <div class="pdbe-citations 1mty" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Methane monooxygenase|Methane monooxygenase]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Methylococcus capsulatus str. bath]]
 [[Category: Frederick, C A]]

1mty

From Proteopedia

Revision as of 18:34, 20 November 2019

METHANE MONOOXYGENASE HYDROXYLASE FROM METHYLOCOCCUS CAPSULATUS (BATH)

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox