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.

1m9c

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 05:58, 28 April 2021

X-ray crystal structure of Cyclophilin A/HIV-1 CA N-terminal domain (1-146) M-type Complex.

Structural highlights

1m9c is a 4 chain structure with sequence from 9hiv1 and Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1ak4, 1m96, 1m9d, 1m9e, 1m9f, 1m9x, 1m9y
Activity:	Peptidylprolyl isomerase, with EC number 5.2.1.8
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PPIA_HUMAN] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides. [Q72497_9HIV1] Capsid protein p24 forms the conical core of the virus that encapsulates the genomic RNA-nucleocapsid complex (By similarity). Nucleocapsid protein p7 encapsulates and protects viral dimeric unspliced (genomic) RNA. Binds these RNAs through its zinc fingers (By similarity).[SAAS:SAAS012344_004_011858]

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

Cyclophilins constitute a ubiquitous protein family whose functions include protein folding, transport and signaling. They possess both sequence-specific binding and proline cis-trans isomerase activities, as exemplified by the interaction between cyclophilin A (CypA) and the HIV-1 CA protein. Here, we report crystal structures of CypA in complex with HIV-1 CA protein variants that bind preferentially with the substrate proline residue in either the cis or the trans conformation. Cis- and trans-Pro substrates are accommodated within the enzyme active site by rearrangement of their N-terminal residues and with minimal distortions in the path of the main chain. CypA Arg55 guanidinium group probably facilitates catalysis by anchoring the substrate proline oxygen and stabilizing sp3 hybridization of the proline nitrogen in the transition state.

Structural insights into the catalytic mechanism of cyclophilin A.,Howard BR, Vajdos FF, Li S, Sundquist WI, Hill CP Nat Struct Biol. 2003 Jun;10(6):475-81. PMID:12730686^[1]

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

References

↑ Howard BR, Vajdos FF, Li S, Sundquist WI, Hill CP. Structural insights into the catalytic mechanism of cyclophilin A. Nat Struct Biol. 2003 Jun;10(6):475-81. PMID:12730686 doi:http://dx.doi.org/10.1038/nsb927

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/1m9c"

@@ Line 3: / Line 3: @@
 <StructureSection load='1m9c' size='340' side='right'caption='[[1m9c]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1m9c]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/9hiv1 9hiv1] and [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M9C OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1M9C FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1m9c]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/9hiv1 9hiv1] and [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M9C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1M9C FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ak4|1ak4]], [[1m96|1m96]], [[1m9d|1m9d]], [[1m9e|1m9e]], [[1m9f|1m9f]], [[1m9x|1m9x]], [[1m9y|1m9y]]</td></tr>
+</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1ak4|1ak4]], [[1m96|1m96]], [[1m9d|1m9d]], [[1m9e|1m9e]], [[1m9f|1m9f]], [[1m9x|1m9x]], [[1m9y|1m9y]]</div></td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Peptidylprolyl_isomerase Peptidylprolyl isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.2.1.8 5.2.1.8] </span></td></tr>
+<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Peptidylprolyl_isomerase Peptidylprolyl isomerase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.2.1.8 5.2.1.8] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1m9c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m9c OCA], [http://pdbe.org/1m9c PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1m9c RCSB], [http://www.ebi.ac.uk/pdbsum/1m9c PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1m9c ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1m9c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m9c OCA], [https://pdbe.org/1m9c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1m9c RCSB], [https://www.ebi.ac.uk/pdbsum/1m9c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1m9c ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/PPIA_HUMAN PPIA_HUMAN]] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides. [[http://www.uniprot.org/uniprot/Q72497_9HIV1 Q72497_9HIV1]] Capsid protein p24 forms the conical core of the virus that encapsulates the genomic RNA-nucleocapsid complex (By similarity).  Nucleocapsid protein p7 encapsulates and protects viral dimeric unspliced (genomic) RNA. Binds these RNAs through its zinc fingers (By similarity).[SAAS:SAAS012344_004_011858]
+[[https://www.uniprot.org/uniprot/PPIA_HUMAN PPIA_HUMAN]] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides. [[https://www.uniprot.org/uniprot/Q72497_9HIV1 Q72497_9HIV1]] Capsid protein p24 forms the conical core of the virus that encapsulates the genomic RNA-nucleocapsid complex (By similarity).  Nucleocapsid protein p7 encapsulates and protects viral dimeric unspliced (genomic) RNA. Binds these RNAs through its zinc fingers (By similarity).[SAAS:SAAS012344_004_011858]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 32: / Line 32: @@
 ==See Also==
 *[[Cyclophilin 3D structures|Cyclophilin 3D structures]]
-*[[Virus coat protein|Virus coat protein]]
+*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]]
 == References ==
 <references/>

1m9c

From Proteopedia

Revision as of 05:58, 28 April 2021

X-ray crystal structure of Cyclophilin A/HIV-1 CA N-terminal domain (1-146) M-type Complex.

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