Inherited and acquired vitamin B12 deficiencies: Which administration route to choose for supplementation?

R Elangovan, J Baruteau - Frontiers in Pharmacology, 2022 - frontiersin.org
Vitamin B12 or cobalamin deficiency is a commonly encountered clinical scenario and most
clinicians will have familiarity prescribing Vitamin B12 to treat their patients. Despite the high …

Plastic structures for diverse substrates: A revisit of human ABC transporters

WT Hou, D Xu, L Wang, Y Chen… - Proteins: Structure …, 2022 - Wiley Online Library
ATP‐binding cassette (ABC) superfamily is one of the largest groups of primary active
transporters that could be found in all kingdoms of life from bacteria to humans. In humans …

Structural basis of substrate recognition and translocation by human very long-chain fatty acid transporter ABCD1

ZP Chen, D Xu, L Wang, YX Mao, Y Li… - Nature …, 2022 - nature.com
Human ABC transporter ABCD1 transports very long-chain fatty acids from cytosol to
peroxisome for β-oxidation, dysfunction of which usually causes the X-linked …

Clinical, phenotypic and genetic landscape of case reports with genetically proven inherited disorders of vitamin B12 metabolism: A meta-analysis

A Wiedemann, A Oussalah, N Lamireau, M Theron… - Cell Reports …, 2022 - cell.com
Inherited disorders of B 12 metabolism produce a broad spectrum of manifestations, with
limited knowledge of the influence of age and the function of related genes. We report a …

Intracellular processing of vitamin B12 by MMACHC (CblC)

L Hannibal, DW Jacobsen - Vitamins and hormones, 2022 - Elsevier
Abstract Vitamin B 12 (cobalamin, Cbl, B 12) is a water-soluble micronutrient synthesized
exclusively by a group of microorganisms. Human beings are unable to make B 12 and thus …

Membrane transport of cobalamin

M Nijland, JMM Felices, DJ Slotboom… - Vitamins and …, 2022 - Elsevier
A wide variety of organisms encode cobalamin-dependent enzymes catalyzing essential
metabolic reactions, but the cofactor cobalamin (vitamin B12) is only synthesized by a …

Structures of the human peroxisomal fatty acid transporter ABCD1 in a lipid environment

LTM Le, JR Thompson, PX Dang, J Bhandari… - Communications …, 2022 - nature.com
The peroxisomal very long chain fatty acid (VLCFA) transporter ABCD1 is central to fatty acid
catabolism and lipid biosynthesis. Its dysfunction underlies toxic cytosolic accumulation of …

Substrate Specificity and the Direction of Transport in the ABC Transporters ABCD1–3 and ABCD4

K Kawaguchi, T Imanaka - Chemical and Pharmaceutical Bulletin, 2022 - jstage.jst.go.jp
The ATP-binding cassette (ABC) transporters are one of the largest families of membrane-
bound proteins and exist in almost all living organisms from eubacteria to mammals. They …

Versatile enzymology and heterogeneous phenotypes in cobalamin complementation type C disease

AJ Esser, S Mukherjee, IA Dereven'kov, SV Makarov… - Iscience, 2022 - cell.com
Nutritional deficiency and genetic errors that impair the transport, absorption, and utilization
of vitamin B 12 (B 12) lead to hematological and neurological manifestations. The cblC …

Structural and functional insights of the human peroxisomal ABC transporter ALDP

Y Jia, Y Zhang, W Wang, J Lei, Z Ying, G Yang - Elife, 2022 - elifesciences.org
Adrenoleukodystrophy protein (ALDP) is responsible for the transport of very-long-chain fatty
acids (VLCFAs) and corresponding CoA-esters across the peroxisomal membrane …