ISDA

Entry Detail

PDB ID:

3HD6

Keywords:

MEMBRANE PROTEIN, TRANSPORT PROTEIN

Title:

Crystal Structure of the Human Rhesus Glycoprotein RhCG

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Homo sapiens

PDB Version:

Deposition Date:

2009-05-06

Release Date:

2009-09-01

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.10 Å

R-Value Free:

0.19

R-Value Work:

0.16

R-Value Observed:

0.16

Space Group:

P 63

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Ammonium transporter Rh type C
Chain IDs:A
Chain Length:490
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q9UBD6 Pfam ID:PF00909

Ligand Molecules

BOG

Primary Citation

Function of human Rh based on structure of RhCG at 2.1 A.

Gruswitz, F, Chaudhary, S, Ho, J.D, Schlessinger, A, Pezeshki, B, Ho, C.M, Sali, A, Westhoff, C.M, Stroud, R.M.Show

Proc.Natl.Acad.Sci.USA 107 9638 9643 (2010)

PMID: 20457942 DOI: 10.1073/pnas.1003587107

Abstact

In humans, NH(3) transport across cell membranes is facilitated by the Rh (rhesus) family of proteins. Human Rh C glycoprotein (RhCG) forms a trimeric complex that plays an essential role in ammonia excretion and renal pH regulation. The X-ray crystallographic structure of human RhCG, determined at 2.1 A resolution, reveals the mechanism of ammonia transport. Each monomer contains 12 transmembrane helices, one more than in the bacterial homologs. Reconstituted into proteoliposomes, RhCG conducts NH(3) to raise internal pH. Models of the erythrocyte Rh complex based on our RhCG structure suggest that the erythrocytic Rh complex is composed of stochastically assembled heterotrimers of RhAG, RhD, and RhCE.

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Primary Citation of related structures