diff --git a/runtime/src/bank.rs b/runtime/src/bank.rs
index 736b907a4e..4d34df7827 100644
--- a/runtime/src/bank.rs
+++ b/runtime/src/bank.rs
@@ -224,8 +224,9 @@ impl ExecuteTimings {
 type BankStatusCache = StatusCache<Result<()>>;
 #[frozen_abi(digest = "5Br3PNyyX1L7XoS4jYLt5JTeMXowLSsu7v9LhokC8vnq")]
 pub type BankSlotDelta = SlotDelta<Result<()>>;
-type TransactionAccountRefCells = Vec<(Pubkey, Rc<RefCell<AccountSharedData>>)>;
-type TransactionLoaderRefCells = Vec<Vec<(Pubkey, Rc<RefCell<AccountSharedData>>)>>;
+pub(crate) type TransactionAccountRefCell = (Pubkey, Rc<RefCell<AccountSharedData>>);
+type TransactionAccountRefCells = Vec<TransactionAccountRefCell>;
+type TransactionLoaderRefCells = Vec<Vec<TransactionAccountRefCell>>;
 
 // Eager rent collection repeats in cyclic manner.
 // Each cycle is composed of <partition_count> number of tiny pubkey subranges
diff --git a/runtime/src/message_processor.rs b/runtime/src/message_processor.rs
index b594397c6d..9d8b124c82 100644
--- a/runtime/src/message_processor.rs
+++ b/runtime/src/message_processor.rs
@@ -1,7 +1,8 @@
 use {
     crate::{
-        accounts::Accounts, ancestors::Ancestors, instruction_recorder::InstructionRecorder,
-        log_collector::LogCollector, native_loader::NativeLoader, rent_collector::RentCollector,
+        accounts::Accounts, ancestors::Ancestors, bank::TransactionAccountRefCell,
+        instruction_recorder::InstructionRecorder, log_collector::LogCollector,
+        native_loader::NativeLoader, rent_collector::RentCollector,
     },
     log::*,
     serde::{Deserialize, Serialize},
@@ -281,7 +282,7 @@ pub struct ThisInvokeContext<'a> {
     invoke_stack: Vec<InvokeContextStackFrame<'a>>,
     rent: Rent,
     pre_accounts: Vec<PreAccount>,
-    accounts: &'a [(Pubkey, Rc<RefCell<AccountSharedData>>)],
+    accounts: &'a [TransactionAccountRefCell],
     programs: &'a [(Pubkey, ProcessInstructionWithContext)],
     logger: Rc<RefCell<dyn Logger>>,
     bpf_compute_budget: BpfComputeBudget,
@@ -304,8 +305,8 @@ impl<'a> ThisInvokeContext<'a> {
         rent: Rent,
         message: &'a Message,
         instruction: &'a CompiledInstruction,
-        executable_accounts: &'a [(Pubkey, Rc<RefCell<AccountSharedData>>)],
-        accounts: &'a [(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        executable_accounts: &'a [TransactionAccountRefCell],
+        accounts: &'a [TransactionAccountRefCell],
         programs: &'a [(Pubkey, ProcessInstructionWithContext)],
         log_collector: Option<Rc<LogCollector>>,
         bpf_compute_budget: BpfComputeBudget,
@@ -421,7 +422,7 @@ impl<'a> InvokeContext for ThisInvokeContext<'a> {
     fn verify_and_update(
         &mut self,
         instruction: &CompiledInstruction,
-        accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        accounts: &[TransactionAccountRefCell],
         write_privileges: &[bool],
     ) -> Result<(), InstructionError> {
         let stack_frame = self
@@ -644,8 +645,8 @@ impl MessageProcessor {
     fn create_keyed_accounts<'a>(
         message: &'a Message,
         instruction: &'a CompiledInstruction,
-        executable_accounts: &'a [(Pubkey, Rc<RefCell<AccountSharedData>>)],
-        accounts: &'a [(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        executable_accounts: &'a [TransactionAccountRefCell],
+        accounts: &'a [TransactionAccountRefCell],
         demote_program_write_locks: bool,
     ) -> Vec<(bool, bool, &'a Pubkey, &'a RefCell<AccountSharedData>)> {
         executable_accounts
@@ -972,8 +973,8 @@ impl MessageProcessor {
     /// This method calls the instruction's program entrypoint function
     pub fn process_cross_program_instruction(
         message: &Message,
-        executable_accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
-        accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        executable_accounts: &[TransactionAccountRefCell],
+        accounts: &[TransactionAccountRefCell],
         caller_write_privileges: &[bool],
         invoke_context: &mut dyn InvokeContext,
     ) -> Result<(), InstructionError> {
@@ -1032,7 +1033,7 @@ impl MessageProcessor {
     pub fn create_pre_accounts(
         message: &Message,
         instruction: &CompiledInstruction,
-        accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        accounts: &[TransactionAccountRefCell],
     ) -> Vec<PreAccount> {
         let mut pre_accounts = Vec::with_capacity(instruction.accounts.len());
         {
@@ -1051,7 +1052,7 @@ impl MessageProcessor {
 
     /// Verify there are no outstanding borrows
     pub fn verify_account_references(
-        accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        accounts: &[TransactionAccountRefCell],
     ) -> Result<(), InstructionError> {
         for (_, account) in accounts.iter() {
             account
@@ -1067,8 +1068,8 @@ impl MessageProcessor {
         message: &Message,
         instruction: &CompiledInstruction,
         pre_accounts: &[PreAccount],
-        executable_accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
-        accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        executable_accounts: &[TransactionAccountRefCell],
+        accounts: &[TransactionAccountRefCell],
         rent: &Rent,
         timings: &mut ExecuteDetailsTimings,
         logger: Rc<RefCell<dyn Logger>>,
@@ -1129,7 +1130,7 @@ impl MessageProcessor {
     fn verify_and_update(
         instruction: &CompiledInstruction,
         pre_accounts: &mut [PreAccount],
-        accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        accounts: &[TransactionAccountRefCell],
         program_id: &Pubkey,
         rent: &Rent,
         write_privileges: &[bool],
@@ -1197,8 +1198,8 @@ impl MessageProcessor {
         &self,
         message: &Message,
         instruction: &CompiledInstruction,
-        executable_accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
-        accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        executable_accounts: &[TransactionAccountRefCell],
+        accounts: &[TransactionAccountRefCell],
         rent_collector: &RentCollector,
         log_collector: Option<Rc<LogCollector>>,
         executors: Rc<RefCell<Executors>>,
@@ -1214,9 +1215,9 @@ impl MessageProcessor {
         // Fixup the special instructions key if present
         // before the account pre-values are taken care of
         if feature_set.is_active(&instructions_sysvar_enabled::id()) {
-            for (pubkey, accont) in accounts.iter().take(message.account_keys.len()) {
+            for (pubkey, account) in accounts.iter().take(message.account_keys.len()) {
                 if instructions::check_id(pubkey) {
-                    let mut mut_account_ref = accont.borrow_mut();
+                    let mut mut_account_ref = account.borrow_mut();
                     instructions::store_current_index(
                         mut_account_ref.data_as_mut_slice(),
                         instruction_index as u16,
@@ -1298,8 +1299,8 @@ impl MessageProcessor {
     pub fn process_message(
         &self,
         message: &Message,
-        loaders: &[Vec<(Pubkey, Rc<RefCell<AccountSharedData>>)>],
-        accounts: &[(Pubkey, Rc<RefCell<AccountSharedData>>)],
+        loaders: &[Vec<TransactionAccountRefCell>],
+        accounts: &[TransactionAccountRefCell],
         rent_collector: &RentCollector,
         log_collector: Option<Rc<LogCollector>>,
         executors: Rc<RefCell<Executors>>,
@@ -1347,6 +1348,7 @@ mod tests {
         super::*,
         solana_sdk::{
             account::Account,
+            account::{AccountSharedData, ReadableAccount},
             instruction::{AccountMeta, Instruction, InstructionError},
             message::Message,
             native_loader::create_loadable_account_for_test,